XCL208, XCL209 Series by Torex Semiconductor Ltd Datasheet

TOIREX XCL208IXCL209 Series /— / 400mA Inductor Built-in Step-Down “micro DC/DC" Converters

1/22

XCL208/XCL209

Series

400mA Inductor Built-in Step-Down “micro DC/DC” Converters

■GENERAL DESCRIPTION

The XCL208/XCL209 series is a synchronous step-down micro DC/DC converter which integrates an inductor and a control IC in

one tiny package (2.5mm×2.15mm, h=1.05mm). A stable power supply with an output current of 400mA is configured using only

two capacitors connected externally.

An internal coil simplifies the circuit and enables minimization of noise and other operational trouble due to the circuit wiring.

A wide operating voltage range of 1.8V (2.0V) to 6.0V enables support for applications that require an alkaline battery (2-cell) or

AC adapter (5V) power supply. An internally fixed output voltage (0.8V to 4.0V) or an externally set output voltage can be selected.

The XCL208/XCL209 series uses synchronous rectification at an operating frequency of 3.0MHz. PWM control (XCL208) or

automatic PWM/PFM switching control (XCL209) can be selected. The XCL208 series has a fixed frequency, enabling the

suppression of output ripple. The XCL209 series achieves high efficiency while holding down output ripple across the full range of

loads, from light to heavy, enabling the extension of battery operation time.

Soft start and on/off functions with C

L

discharge are provided, and the IC can be put in the standby state by inputting a Low level

signal into the CE pin.

■APPLICATIONS

●Mobile phones, Smart phones

●Bluetooth Headsets

●Tablet PCs

●PND

●PC peripheral devices

●DSC, Camcorders

■FEATURES

Input Voltage : 1.8V ~ 6.0V (Type F)

: 2.0V ~ 6.0V (Type A/B)

Fixed Output Voltage : 0.8V ~ 4.0V (±2.0%)

High Efficiency : 90% (V

IN

=4.2V, V

OUT

=3.3V)

Output Current : 400mA

Oscillation Frequency : 3.0MHz (

±

15%)

CE Function :

A

ctive High

Soft-start Circuit Built-in

C

L

High Speed Auto Discharge

Protection Circuits : Current Limiter Built-in

(Constant Current & Latching)

Control Methods : PWM (XCL208)

PWM/PFM (XCL209)

Operating Ambient Temperature

: -40℃ ~ +85℃

Package : USP-10B03

Environmentally Friendly : EU RoHS Compliant, Pb Free

■TYPICAL APPLICATION CIRCUIT

ETR28003-005

■ TYPICAL PERFORMANCE

CHARACTERISTICS

●Efficiency vs. Output Current

XCL208x333DR/XCL209x333D

☆Green Operation Compatible

0

20

40

60

80

100

0.01 0.1 1 10 100 1000

Output Current:I

OUT

(mA)

Efficiency:EFFI(%

)

V

IN

= 4.2V

VOUT =3.3V

XCL209

(

PW M/ PFM

)

XCL208(PWM)

5.0V

XCL208A / XCL208B / XCL209A / XCL209B Type

XCL208F / XCL209F Type

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2/22

XCL208/XCL209 Series

■BLOCK DIAGRAM

V

IN

AV

SS

V

OUT

L1

L

X

L2

CE

PV

SS

V

IN

AV

SS

V

OUT

L1

L

X

L2

CE

PV

SS

V

IN

AV

SS

FB

L1

L

X

L2

CE

PV

SS

1) XCL208A / XCL209A Type 2) XCL208B / XCL209B Type

3) XCL208F / XCL209F Type

NOTE:

The XCL208 offers a fixed PWM control, a signal from CE Control Logic to PWM/PFM Selector is fixed to "L" level inside. The XCL209 control

scheme is PWM/PFM automatic switching, a signal from CE Control Logic to PWM/PFM Selector is fixed to "H" level inside. The diodes placed

inside are ESD protection diodes and parasitic diodes.

W GEE E vow TOIREX

3/22

XCL208/XCL209

Series

■PRODUCT CLASSIFICATION

XCL208①②③④⑤⑥ Fixed PWM

XCL209①②③④⑤⑥ PWM/PFM Auto Switching

(*1)

When other output voltages (semi-custom) are needed, please contact your local Torex sales office for more information.

Output voltage range is 0.8~4.0V.

(*2)

Halogen free and EU RoHS compliant.

(*3)

The reels are shipped in a moisture-proof packing

■PIN CONFIGURATION

DESIGNATOR ITEM SYMBOL DESCRIPTION

① Type

A V

IN

≧2.0V Fixed Output Voltage

Standard soft-start , No C

L

auto discharge

B V

IN

≧2.0V Fixed Output Voltage

C

L

auto discharge, High speed soft-start

F V

IN

≧1.8V Output Voltage External Setting

C

L

auto discharge, High speed soft-start

②③ Output Voltage

(*1)

10 1.0V

12 1.2V

15 1.5V

18 1.8V

25 2.5V

28 2.8V

2L 2.85V

30 3.0V

33 3.3V

08 External Setting 0.8V (XCL208F/XCL209F)

④ Oscillation Frequency 3 3.0MHz

⑤⑥

(*2)

Package (Order Unit) DR USP-10B03 (3,000psc/Reel)

(*3)

（BOTTOM VIEW）

4/22

XCL208/XCL209 Series

■PIN ASSIGNMENT

■FUNCTION

PIN NAME SIGNAL CONDITIONS STATUS

CE

L AVSS≦VCE≦0.25V Stand-by

H 0.65V≦VCE≦6V Active

* When the CE pin is left open, the IC may operate unstable. Please do not leave the CE pin open.

■ABSOLUTE MAXIMUM RATINGS

PIN NUMBER PIN NAME FUNCTIONS

USP-10B03

1 PVSS (Power) Ground

2 LX Switching Output

3 NC No Connection

4 FB Output Voltage Sense Pin (Type F)

VOUT Fixed Output Voltage Pin (Type A/B)

5 AVSS (Analog) Ground

6 CE Active High Enable

7 NC No Connection

8 VIN Power Supply Input

9 L1 Inductor Electrodes

10 L2 Inductor Electrodes

Ta=25℃

PARAMETER SYMBOL RATINGS UNITS

Input Voltage VIN -0.3 ~ 6.5 V

Lx Pin Voltage VLx -0.3 ~ VIN+0.3≦6.5 V

Output Voltage VOUT -0.3 ~ 6.5 V

FB Pin Voltage VFB -0.3 ~ 6.5 V

CE Input Voltage VCE -0.3 ~ 6.5 V

Lx Pin Current ILX ±1500 mA

Power Dissipation Pd 500(40mm x 40mm Standard board) (*1) mW

Operating Ambient Temperature Topr -40 ~ +85 ℃

Storage Temperature Tst g -40 ~ +125 ℃

Each voltage rating uses the VSS pin as a reference.

(*1) The power dissipation figure shown is PCB mounted and is for reference only.

The mounting condition is please refer to PACKAGING INFORMATION.

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5/22

XCL208/XCL209

Series

■ELECTRICAL CHARACTERISTICS

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT

CIRCUIT

Output Voltage V

OUT

V

IN

=V

CE

=5.0V, I

OUT

=30mA <E-1> <E-2> <E-3> V ①

Operating Voltage Range V

IN

2.0 - 6.0 V ①

Maximum Output Current I

OUTMAX

V

IN

=V

OUT(T)

+2.0V, V

CE

=1.0V

(*8)

400 - - mA ①

UVLO Voltage V

UVLO

V

CE

=V

IN

, V

OUT

=0V,

Voltage which Lx pin holding

“L” level

(*1),(*10)

1.00 1.40 1.78 V ③

Supply Current (XCL208) I

DD

V

IN

=V

CE

=5.0V, V

OUT

=V

OUT(T)

×1.1V - 46 65 μA ②

Supply Current (XCL209) - 21 35

Stand-by Current I

STB

V

IN

=5.0V, V

CE

=0V, V

OUT

=V

OUT(T)

×1.1V - 0 1 μA ②

Oscillation Frequency f

OSC

V

IN

=V

OUT(T)

+2.0V, V

CE

=1.0V, I

OUT

=100mA 2.55 3.00 3.45 MHz ①

PFM Switching Current

(*11)

I

PFM

V

IN

=V

OUT(T)

+2.0V, V

CE

=V

IN

, I

OUT

=1mA <E-4> <E-5> <E-6> mA ⑩

PFM Duty Limit

(*11)

DTY

LIMIT_PFM

V

CE

=V

IN

=<C-1>, I

OUT

=1mA - 200 300 % ①

Maximum Duty Cycle D

MAX

V

IN

=V

CE

=5.0V, V

OUT

=V

OUT(T)

×0.9V 100 - - % ③

Minimum Duty Cycle D

MIN

V

IN

=V

CE

=5.0V, V

OUT

=V

OUT(T)

×1.1V - - 0 % ③

Efficiency

(*2)

EFFI When connected to external components,

V

CE

=V

IN

=V

OUT(T)

+1.2V, I

OUT

=100mA - <E-7> - % ①

L

X

SW "H" ON Resistance 1 R

LxH1

V

IN

=V

CE

=5.0V, V

OUT

=0V, I

LX

=100mA

(*3)

- 0.35 0.55 Ω ④

L

X

SW "H" ON Resistance 2 R

LxH2

V

IN

=V

CE

=3.6V, V

OUT

=0V, I

LX

=100mA

(*3)

- 0.42 0.67 Ω ④

L

X

SW "L" ON Resistance 1 R

LxL1

V

IN

=V

CE

=5.0V

(*4)

- 0.45 0.65 Ω -

L

X

SW "L" ON Resistance 2 R

LxL2

V

IN

=V

CE

=3.6V

(*4)

- 0.52 0.77 Ω -

L

X

SW "H" Leakage Current

(*5)

I

LeakH

V

IN

=V

OUT

=5.0V, V

CE

=0V, V

LX

=0V - 0.01 1.00 μA ⑤

L

X

SW "L" Leakage Current

(*5)

I

LeakL

V

IN

=V

OUT

=5.0V, V

CE

= 0V, V

LX

=5.0V - 0.01 1.00 μA ⑤

Current Limit

(*9)

I

LIM

V

IN

=V

CE

=5.0V, V

OUT

=V

OUT(T)

×0.9V

(*7)

600 800 1000 mA ⑥

Output Voltage Temperature

Characteristics

∆V

OUT

/

(V

OUT

･

∆Topr)

I

OUT

=30mA,

-40℃≦Topr≦85℃ - ±100 -

ppm/

℃

①

CE "H" Voltage V

CEH

V

OUT

=0V, Applied voltage to V

CE

,

Voltage changes Lx to “H” level

(*10)

0.65 - 6.00 V ③

CE "L" Voltage V

CEL

V

OUT

=0V, Applied voltage to V

CE,

Voltage changes Lx to “L” level

(*10)

AV

SS

- 0.25 V ③

CE "H" Current I

CEH

V

IN

=V

CE

= 5.0V, V

OUT

=0V -0.1 - 0.1 μA ⑤

CE "L" Current I

CEL

V

IN

=5.0V, V

CE

=0V, V

OUT

=0V -0.1 - 0.1 μA ⑤

Soft-start Time t

SS

V

CE

=0V→V

IN

, I

OUT

=1mA 0.5 0.90 2.50 ms ①

Latch Time t

LAT

V

IN

=V

CE

=5.0V, V

OUT

=0.8×V

OUT(T)

,

Short Lx at 1Ω resistance

(*6)

1 - 20 ms ⑦

Short Protection Threshold Voltage

V

SHORT

Sweeping V

OUT

, V

IN

=V

CE

=5.0V,

Short Lx at 1Ω resistance, V

OUT

voltage which

Lx becomes “L” level within 1ms

<E-8> <E-9> <E-10> V ⑦

Inductance Value L Test Frequency=1MHz - 1.5 - μH -

Allowed Inductor Current I

DC

∆T=40℃ - 700 - mA -

Ta=25℃

1) XCL208Axx3DR/XCL209Axx3DR

Test conditions: Unless otherwise stated, V

IN

=5.0V, V

OUT(T)

=Nominal Voltage

NOTE:

(*1)

Including hysteresis operating voltage range.

(*2)

EFFI={ (output voltage×output current) / (input voltage×input current) }×100

(*3)

ON resistance (Ω)=(V

IN

- Lx pin measurement voltage) / 100mA

(*4)

Design value

(*5)

When temperature is high, a current of approximately 10μA (maximum) may leak.

(*6)

Time until it short-circuits V

OUT

with GND via 1Ω of resistor from an operational state and is set to Lx=0V from current limit pulse generating.

(*7)

When V

IN

is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.

(*8)

When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.

If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.

(*9)

Current limit denotes the level of detection at peak of coil current.

(*10)

“H”=V

IN

~V

IN

-1.2V, “L”=+0.1V~-0.1V

(*11)

I

PFM

and DTY

LIMIT_PFM

are defined only for the XCL209 series.

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6/22

XCL208/XCL209 Series

■ELECTRICAL CHARACTERISTICS (Continued)

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT CIRCUIT

Output Voltage VOUT VIN=VCE=5.0V, IOUT=30mA <E-1> <E-2> <E-3> V ①

Operating Voltage Range VIN 2.0 - 6.0 V ①

Maximum Output Current IOUTMAX VIN=VOUT(T)+2.0V, VCE=1.0V (*8) 400 - - mA ①

UVLO Voltage VUVLO VCE=VIN, VOUT=0V,

Voltage which Lx pin holding “L” level (*1),(*10)

1.00 1.40 1.78 V ③

Supply Current (XCL208) IDD VIN=VCE=5.0V, VOUT=VOUT(T) ×1.1V - 46 65 μA ②

Supply Current (XCL209) - 21 35

Stand-by Current ISTB VIN=5.0V, VCE=0V, VOUT=VOUT

(

T

)

×1.1V - 0 1 μA ②

Oscillation Frequency fOSC VIN=VOUT(T)+2.0V, VCE=1.0V, IOUT=100mA 2.55 3.00 3.45 MHz ①

PFM Switching Current

(*11)

IPFM VIN=VOUT(T)+2.0V, VCE=VIN , IOUT=1mA <E-4> <E-5> <E-6> mA ⑩

PFM Duty Limit (*11) DTYLIMIT

_

PFM VCE=VIN=<C-1>, IOUT=1mA - 200 300 % ①

Maximum Duty Cycle DMAX VIN=VCE=5.0V, VOUT=VOUT

(

T

)

×0.9V 100 - - % ③

Minimum Duty Cycle DMIN VIN=VCE=5.0V, VOUT=VOUT

(

T

)

×1.1V - - 0 % ③

Efficiency (*2) EFFI VCE=VIN=VOUT(T)+1.2V, IOUT=100mA - <E-7> - % ①

L

X

SW "H" ON Resistance 1

RLxH1 VIN=VCE=5.0V, VOUT=0V, ILX=100mA (*3) - 0.35 0.55 Ω ④

L

X

SW "H" ON Resistance 2

RLxH2 VIN=VCE=3.6V, VOUT=0V, ILX=100mA (*3) - 0.42 0.67 Ω ④

L

X

SW "L" ON Resistance 1

RLxL1 VIN=VCE=5.0V (*4) - 0.45 0.65 Ω -

L

X

SW "L" ON Resistance 2

RLxL2 VIN=VCE=3.6V (*4) - 0.52 0.77 Ω -

L

X

SW "H" Leakage Current

(*5)

ILeakH VIN=VOUT=5.0V, VCE=0V, VLX=0V - 0.01 1.00 μA ⑨

Current Limit (*9) ILIM VIN=VCE=5.0V, VOUT=VOUT

(

T

)

×0.9V (*7) 600 800 1000 mA ⑥

Output Voltage Temperature

Characteristics

∆V

OUT

/

(V

OUT

･

∆Topr)

IOUT=30mA, -40℃≦Topr≦85℃, - ±100 -

ppm/

℃

①

CE "H" Voltage VCEH VOUT=0V, Applied voltage to VCE Voltage

changes Lx to “H” level （*10） 0.65 - 6.00 V ③

CE "L" Voltage VCEL VOUT=0V, Applied voltage to VCE Voltage

changes Lx to “L” level （*10） AVSS

- 0.25 V ③

CE "H" Current ICEH VIN=VCE=5.0V, VOUT=0V -0.1 - 0.1 μA ⑤

CE "L" Current ICEL VIN=5.0V, VCE=0V, VOUT=0V -0.1 - 0.1 μA ⑤

Soft-start Time tSS VCE=0V→VIN, IOUT=1mA - <E-11> <E-12> ms ①

Latch Time tLAT VIN=VCE=5.0V, VOUT=0.8×VOUT(T),

Short Lx at 1Ω resistance

(*6)

1 - 20 ms ⑦

Short Protection Threshold Voltage

VSHORT

Sweeping VOUT, VIN=VCE=5.0V,

Short Lx at 1Ω resistance, VOUT voltage which

Lx becomes “L” level within 1ms

<E-8> <E-9> <E-10> V ⑦

CL Discharge RDCHG VIN=5.0V, LX=5.0V, VCE=0V, VOUT=Open 200 300 450 Ω ⑧

Inductance Value L Test Frequency=1MHz - 1.5 - μH -

Allowed Inductor Current IDC ∆T=40℃ - 700 - mA -

Ta=25℃

2

)

XCL208Bxx3DR/XCL209Bxx3DR

Test conditions: Unless otherwise stated, VIN=5.0V, VOUT (T)=Nominal Voltage

NOTE:

(*1) Including hysteresis operating voltage range.

(*2) EFFI={ ( output voltage×output current ) / ( input voltage×input current) }×100

(*3) ON resistance (Ω)= (VIN - Lx pin measurement voltage) / 100mA

(*4) Design value

(*5) When temperature is high, a current of approximately 10μA (maximum) may leak.

(*6) Time until it short-circuits VOUT with GND via 1Ω of resistor from an operational state and is set to Lx=0V from current limit pulse generating.

(*7) When VIN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.

(*8) When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.

If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.

(*9) Current limit denotes the level of detection at peak of coil current.

(*10) “H”=VIN~VIN-1.2V, “L”=+0.1V~-0.1V

(*11) IPFM and DTYLIMIT_PFM are defined only for the XCL209 series.

When connected to externa‘ component; TOIi’EX

7/22

XCL208/XCL209

Series

■ELECTRICAL CHARACTERISTICS (Continued)

PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT

CIRCUIT

FB Voltage V

FB

V

IN

=V

CE

=5.0V, V

FB

voltage which Decrease

V

FB

from 0.9V, Lx becomes “H”

(*10)

level 0.784 0.800 0.816 V ③

Operating Voltage Range V

IN

1.8 - 6.0 V ①

Maximum Output Current I

OUTMAX

V

IN

=3.2V, V

CE

=1.0V

(*8)

400 - - mA ①

UVLO Voltage V

UVLO

V

CE

=V

IN

, V

FB

=0.4V,

Voltage which Lx pin holding “L” level

(*1), (*10)

1.00 1.40 1.78 V ③

Supply Current (XCL208) I

DD

V

IN

=V

CE

= 5.0V, V

FB

=0.88V - 46 65 μA ②

Supply Current (XCL209) - 21 35

Stand-by Current I

STB

V

IN

=5.0V, V

CE

=0V, V

FB

=0.88V - 0 1.0 μA ③

Oscillation Frequency f

OSC

V

IN

=3.2V, V

CE

=1.0V, I

OUT

=100mA 2.55 3.00 3.45 MHz ①

PFM Switching Current

(*11)

I

PFM

V

IN

=3.2V, V

CE

= V

IN

, I

OUT

=1mA <E-4> <E-5> <E-6> mA ⑩

PFM Duty Limit

(*11)

DTY

LIMIT_PFM

V

IN

=V

CE

=2.2V, I

OUT

=1mA - 200 300 % ①

Maximum Duty Cycle MAXDTY V

IN

=V

CE

=5.0V, V

FB

=0.72V 100 - - % ③

Minimum Duty Cycle MINDTY V

IN

=V

CE

=5.0V, V

FB

=0.88V - - 0 % ③

Efficiency

(*2)

EFFI V

CE

=V

IN

=2.4V, I

OUT

=100mA - <E-7> - % ①

L

X

SW "H" ON Resistance 1 R

LxH1

V

IN

=V

CE

=5.0V, V

FB

=0.72V, I

LX

=100mA

(*3)

- 0.35 0.55 Ω ④

L

X

SW "H" ON Resistance 2 R

LxH2

V

IN

=V

CE

=3.6V, V

FB

=0.72V, I

LX

=100mA

(*3)

- 0.42 0.67 Ω ④

L

X

SW "L" ON Resistance 1 R

LxL1

V

IN

=V

CE

=5.0V

(*4)

- 0.45 0.65 Ω -

L

X

SW "L" ON Resistance 2 R

LxL2

V

IN

=V

CE

=3.6V

(*4)

- 0.52 0.77 Ω -

LX SW "H" Leakage Current

(*5)

I

LeakH

V

IN

=V

FB

=5.0V, V

CE

=0V, L

X

=0V - 0.01 1.00 μA ⑨

Current Limit

(*9)

I

LIM

V

IN

=V

CE

=5.0V, V

FB

=0.72V

(*7)

600 800 1000 mA ⑥

Output Voltage Temperature

Characteristics

∆V

OUT

/

(V

OUT

･

∆Topr)

I

OUT

=30mA, -40℃≦Topr≦85℃, - ±100 -

ppm/

℃

①

CE "H" Voltage V

CEH

V

FB

=0.72V, Applied voltage to V

CE

,

Voltage changes L

X

to “H” level

(*10)

0.65 - 6.00 V ③

CE "L" Voltage V

CEL

V

FB

=0.72V, Applied voltage to V

CE

,

Voltage changes L

X

to “L” level

(*10)

AV

SS

- 0.25 V ③

CE "H" Current I

CEH

V

IN

=V

CE

=5.0V, V

FB

=0.72V -0.1 - 0.1 μA ⑤

CE "L" Current I

CEL

V

IN

=5.0V, V

CE

=0V, V

FB

=0.72V -0.1 - 0.1 μA ⑤

Soft-start Time t

SS

When connected to external components,

V

CE

=0V→V

IN

, I

OUT

=1mA - 0.25 0.40 ms ①

Latch Time t

LAT

V

IN

=V

CE

=5.0V, V

FB

=0.64V,

Short Lx at 1Ω resistance

(*6)

1 - 20 ms ⑦

Short Protection Threshold Voltage

V

SHORT

V

IN

=V

CE

=5.0V, V

FB

voltage which Decrease

V

FB

from 0.4V, Lx becomes “L”

(*10)

level 0.150 0.200 0.250 V ⑦

C

L

Discharge R

DCHG

V

IN

=5.0V, L

X

=5.0V, V

CE

=0V, V

FB

=Open 200 300 450 Ω ⑧

Inductance Value L Test Frequency=1MHz - 1.5 - μH -

Allowed Inductor Current I

DC

∆T=40℃ - 700 - mA -

Ta=25℃

3) XCL208F083DR/XCL209F083DR

V

OUT(T)

=Nominal Voltage

Test conditions: Unless otherwise stated, V

IN

=5.0V, V

OUT

=1.2V, and the order of voltage application is V

FB

→V

IN

→V

CE

NOTE:

(*1)

Including hysteresis operating voltage range.

(*2)

EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100

(*3)

ON resistance (Ω)= (V

IN

- Lx pin measurement voltage) / 100mA

(*4)

Design value

(*5)

When temperature is high, a current of approximately 10μA (maximum) may leak.

(*6)

Time until it short-circuits V

OUT

with GND via 1Ω of resistor from an operational state and is set to Lx=0V from current limit pulse generating.

(*7)

When V

IN

is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.

(*8)

When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.

If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.

(*9)

Current limit denotes the level of detection at peak of coil current.

(*10)

“H”=V

IN

~V

IN

-1.2V, “L”=+0.1V~-0.1V

(*11)

I

PFM

and DTY

LIMIT_PFM

are defined only for the XCL209 series.

400mA

8/22

XCL208/XCL209 Series

■ELECTRICAL CHARACTERISTICS (Continued)

VOUT

PFM

Duty

VIN (V)

VOUT (V) IPFM (mA)

EFFI (%)

VSHORT (ms) tss (ms)

MIN. TYP. MAX. MIN. TYP. MAX. TYP. MIN. TYP. MAX. TYP. MAX.

<C-1> <E-1> <E-2> <E-3> <E-4> <E-5> <E-6> <E-7> <E-8> <E-9> <E-10> <E-11> <E-12>

1.00 2.0V 0.980 1.000 1.020 190 260 350 79 0.375 0.500 0.625 0.25 0.40

1.20 2.20 1.176 1.200 1.224 190 260 350 82 0.450 0.600 0.750 0.25 0.40

1.50 2.50 1.470 1.500 1.530 180 240 300 84 0.563 0.750 0.938 0.25 0.40

1.80 2.80 1.764 1.800 1.836 170 220 270 85 0.675 0.900 1.125 0.32 0.50

2.50 3.50 2.450 2.500 2.550 170 220 270 86 0.938 1.250 1.563 0.32 0.50

2.80 3.80 2.744 2.800 2.856 170 220 270 86 1.050 1.400 1.750 0.32 0.50

2.85 3.85 2.793 2.850 2.907 170 220 270 86 1.069 1.425 1.781 0.32 0.50

3.00 4.00 2.940 3.000 3.060 170 220 270 86 1.125 1.500 1.875 0.32 0.50

3.30 4.30 3.234 3.300 3.366 170 220 270 86 1.238 1.650 2.063 0.32 0.50

e.g. Circuit (XCL208F/XCL209F Type)

VOUT (V) R1 (kΩ) R2 (kΩ) CFB (pF)

0.9 100 820 150

1.2 150 300 100

1.5 130 150 220

1.8 300 240 150

2.5 510 240 100

3.0 330 120 150

3.3 470 150 100

4.0 120 30 470

The output voltage can be set by adding external dividing resistors. The output voltage is determined by R1 and R2 in the

equation below. The sum of R1 and R2 is normally kept 1MΩ or less. The output voltage range can be set from 0.9V to 6.0V

based on the 0.8V ±2.0% reference voltage source.

Note that when the input voltage (VIN) is less than or equal to the set output voltage, an output voltage (VOUT) higher than the

input voltage (VIN) cannot be output.

V

OUT=0.8×(R1+R2)/R2

Adjust the value of the phase compensation speedup capacitor CFB so that fzfb=1/(2×π×CFB×R1) is 10kHz or less. It is

optimum to adjust to a value from 1kHz to 20kH based on the components used and the board layout.

[Calculation example]

When R1=470kΩ, R2=150kΩ, VOUT=0.8×(470k+150k)/150k=3.3V

< 0mm="" noﬂ)=""> XCLZUE/XCLZUB A/E Tyne WM Farm McucurzPoml E LI U L2 9 vw Vow RL CVN CE CL XE-urmcomcouems 77 cm ownmm) CL mmmm < circuit="" no®=""> LI U L2 VIN CE < circuit="" no®=""> v‘v mm 0N ”WW : Murvm mam < circuit="" nois)=""> Wm Form Mcasur: Fowl ’— LI U L2 vw C W > Y F GE Vow “ Vss ,. < emu="" n06)=""> IL. < circuit="" noied=""> XCLZUE/XCLZUB A/E Tyne Wave Form Mcasur: Fowl L 7* LI U L2* 9 VIN CL CE Vom Vss RL cm x Encrm‘comcoucms L v5quSdzclzdwudy cm lVHFlce-mmg) CL wwmmo < cure-m="" noﬁ?=""> XCLZDB/XCLZUB FTyDe WM Form mam Fowl x Emmmmm cm ownmm) m mm CL mummm R2 mm Cu: ‘zwr < clrcmt="" n06/=""> Wave Form M¢a§ure Fowl LI vw mum" 2am CE ‘ L r < cure-m="" n067=""> < cure-m="" no@=""> Wave Form Mum Fowl LI L2 ‘ um < (mm="" noc97=""> LI U L2 VoUY (FE) Vss < cure-m="" ~on=""> XCLZDB/XCLZUB FTyDe Wave Farm Meucur: Fowl LI vw CE m x Emmmaoum cw unmewm) m mm CL munmm R2 mm Cu: VZDaF TOIREX

9/22

XCL208/XCL209

Series

■TEST CIRCUITS

10/22

XCL208/XCL209 Series

■OPERATIONAL DESCRIPTION

The reference voltage source provides the reference voltage to ensure stable output voltage of the DC/DC converter.

The ramp wave circuit determines switching frequency. The frequency is fixed internally 3.0MHz. Clock pulses generated in

this circuit are used to produce ramp waveforms needed for PWM operation, and to synchronize all the internal circuits.

The error amplifier is designed to monitor output voltage. The amplifier compares the reference voltage with the feedback (Type

F: FB pin voltage) divided by the internal split resistors, R1 and R2. When a feed back voltage is lower than the reference voltage,

the output voltage of the error amplifier is increased. The gain and frequency characteristics of the error amplifier output are fixed

internally to deliver an optimized signal to the mixer.

The current limiter circuit of the XCL208/XCL209 series monitors the current flowing through the P-ch MOS driver transistor

connected to the Lx pin, and features a combination of the current limit mode and the operation suspension mode.

① When the driver current is greater than a current limit level, the current limit function operates to turn off the pulses from the

Lx pin at any given timing.

② When the driver transistor is turned off, the limiter circuit is then released from the current limit detection state.

③ At the next pulse, the driver transistor is turned on. However, the transistor is immediately turned off in the case of an over

current state.

④ When the over current state is eliminated, the IC resumes its normal operation.

The IC waits for the over current state to end by repeating the steps ① through ③. If an over current state continues for a latch

time and the above three steps are repeatedly performed, the IC performs the function of latching the OFF state of the driver

transistor, and goes into operation suspension state. Once the IC is in suspension state, operations can be resumed by either turning

the IC off via the CE pin, or by restoring power to the VIN pin. The suspension state does not mean a complete shutdown, but a state

in which pulse output is suspended; therefore, the internal circuitry remains in operation. The current limit of the XCL208/XCL209

series can be set at 800mA at typical. Depending on the state of the PC Board, latch time may become longer and latch operation

may not work. In order to avoid the effect of noise, an input capacitor is placed as close to the IC as possible.

The XCL208/XCL209 series consists of a reference voltage source, ramp wave circuit, error amplifier, PWM comparator,

phase compensation circuit, output voltage adjustment resistors, P-ch MOSFET driver transistor, N-ch MOSFET switching

transistor for the synchronous switch, current limiter circuit, UVLO circuit with control IC, and an inductor. (See the block

diagram below.) Using the error amplifier, the voltage of the internal voltage reference source is compared with the feedback

voltage from the VOUT pin through split resistors, R1 and R2. Phase compensation is performed on the resulting error amplifier

output, to input a signal to the PWM comparator to determine the turn-on time during PWM operation. The PWM comparator

compares, in terms of voltage level, the signal from the error amplifier with the ramp wave from the ramp wave circuit, and

delivers the resulting output to the buffer driver circuit to cause the Lx pin to output a switching duty cycle.

This process is continuously performed to ensure stable output voltage. The current feedback circuit monitors the P-ch MOS

driver transistor current for each switching operation, and modulates the error amplifier output signal to provide multiple

feedback signals. This enables a stable feedback loop even when a low ESR capacitor such as a ceramic capacitor is used

ensuring stable output voltage. Type A

Limit＜#ms Limit＞#ms

ILx

VOUT

Lx

VCE

VIN

Current Limit Level

0mA

VSS

Restart

V

IN

AV

SS

V

OUT

L1

L

X

L2

CE

PV

SS

5mm. Vnhl- mn omutvmun m ommvmm mmge Chavicunsacs Rmmg : cums? (WP) nmmmmw

11/22

XCL208/XCL209

Series

■OPERATIONAL DESCRIPTION(Continued)

<Short-Circuit Protection>

The short-circuit protection circuit monitors the internal R1 and R2 divider voltage (Type F: FB pin voltage). In case where

output is accidentally shorted to the Ground and when the FB point voltage decreases less than half of the reference voltage

(Vref) and a current more than the I

LIM

flows to the driver transistor, the short-circuit protection quickly operates to turn off

and to latch the driver transistor. In the latch state, the operation can be resumed by either turning the IC off and on via the

CE pin, or by restoring power supply to the V

IN

pin.

Also, when sharp load transient happens, a voltage drop at the V

OUT

is propagated through C

FB

, as a result, short circuit

protection may operate in the voltage higher than short-circuit protection voltage.

When the V

IN

pin voltage becomes 1.4V (TYP.) or lower, the P-channel output driver transistor is forced OFF to prevent false

pulse output caused by unstable operation of the internal circuitry. When the V

IN

pin voltage becomes 1.8V or higher, by releasing

the UVLO state then the soft-start function initiates output startup operation. The soft-start function operates even when the V

IN

pin voltage falls momentarily below the UVLO operating voltage same as releasing the UVLO function. The UVLO circuit does

not cause a complete shutdown of the IC, but causes pulse output to be suspended; therefore, the internal circuitry remains in

operation.

In PFM control operation, until coil current reaches to I

PFM

, the IC keeps the P-ch MOSFET on.

In this case, on-time (t

ON

) that the P-ch MOSFET is kept on can be given by the following formula.

t

ON

= L

×

I

PFM

/ (V

IN

－

V

OUT

) →I

PFM

①

In the PFM control operation, the maximum PFM Duty Limit is set to 200% (TYP.). Therefore, under the condition that the step-

down ratio is small, it’s possible for P-ch MOSFET to be turned off even when coil current doesn’t reach to I

PFM

. →I

PFM

②

<C

L

High Speed Discharge>

The XCL208B/XCL209B and the XCL208F/XCL209F can quickly discharge the electric charge at the output capacitor (C

L

)

when a low signal to the CE pin which enables a whole IC circuit put into OFF state, is inputted via the N-ch transistor

located between the L

X

pin and the V

SS

pin. When the IC is disabled, electric charge left at the output capacitor (C

L

) is quickly

discharged so that it may avoid application malfunction. Discharge time is set by the C

L

auto-discharge resistance (R

DCHG

)

and the output capacitance (C

L

). By setting time constant as τ(τ=C

L

x R

DCHG

), discharge time of the output voltage is

calculated by the following formula.

V = V

OUT(T)

x e

–t/

τ

or t=

τ

ln (V

OUT(T)

/ V)

V : Output voltage after discharge

V

OUT(T)

: Output voltage

t: Discharge time,

τ: C

L

x R

DCHG

C

L

: Output capacitance (C

L

)

R

DCHG

: C

L

auto-discharge resistance

I

PFM

① I

PFM

②

0

10

20

30

40

50

60

70

80

90

100

0 102030405060708090100

CL=10uF

CL=20uF

CL=50uF

12/22

XCL208/XCL209 Series

■OPERATIONAL DESCRIPTION(Continued)

(A)

SW_CE OPERATIONAL STATES

ON Stand-by

OFF Active

(B)

SW_CE OPERATIONAL STATES

ON Active

OFF Stand-by

The operation of the XCL208/XCL209 series will enter into the stand-by mode when a low level signal is input to the CE pin.

During the stand-by mode, the current consumption of the IC becomes 0μA (TYP.), with a state of high impedance at the Lx pin

and VOUT pin. The IC starts its operation by inputting a high level signal to the CE pin. The input to the CE pin is a CMOS input

and the sink current is 0μA (TYP.).

<Soft-Start>

Soft-start time is internally set. Soft-start time is defined as the time to reach 90% of the output nominal voltage when the CE

pin is turned on.

t

SS

V

CEH

V

OUT

0V

設定電圧の90%

90% of setting voltage

IC内部

R1

R2

SW_CE

V

IN

CE

V

IN

CE

V

DD

V

DD

使用例A 使用例B

(A) (B)

< IC inside > < IC inside >

DP 9

13/22

XCL208/XCL209

Series

■NOTE ON USE

1. For temporary, transitional voltage drop or voltage rising phenomenon, the IC is liable to malfunction should the ratings be

exceeded.

2. The XCL208/XCL209 series is designed for use with ceramic output capacitors. If, however, the potential difference is too

large between the input voltage and the output voltage, a ceramic capacitor may fail to absorb the resulting high switching

energy and oscillation could occur on the output. In this case, increase 10μF to the output capacitance for adding insufficient

capacitance. Also, if the output capacitance is too large, the output voltage is slowly rising and the IC may not operate.

Adjust the output capacitance so that the output voltage can go up within the soft-start time.

3. Spike noise and ripple voltage arise in a switching regulator as with a DC/DC converter. These are greatly influenced by

external component selection, such as the coil inductance, capacitance values, and board layout of external components.

Once the design has been completed, verification with actual components should be done.

4. Depending on the input-output voltage differential, or load current, some pulses may be skipped as 1/2, 1/3 and the ripple voltage

may increase.

5. When the difference between input and output is large in PWM control, very narrow pulses will be outputted, and there is the

possibility that 0% duty cycles may be continued during some cycles.

6. When the difference between input and output is small, and the load current is heavy, very wide pulses will be outputted and

there is the possibility that 100% duty cycles may be continued during some cycles.

7. With the IC, the peak current of the coil is controlled by the current limit circuit. Since the peak current of the coil increases

when dropout voltage or load current is high, current limit starts operation, and this can lead to instability. When peak current

becomes high, please adjust the coil inductance value and fully check the circuit operation. In addition, please calculate the

peak current according to the following formula:

Ipk = (V

IN

- V

OUT

) x OnDuty / (2 x L x f

OSC

) + I

OUT

L: Coil Inductance Value

f

OSC

: Oscillation Frequency

8. When the peak current which exceeds limit current flows within the specified time, the built-in P-ch driver transistor turns off.

During the time until it detects limit current and before the built-in transistor can be turned off, the current for limit current

flows; therefore, care must be taken when selecting the rating for the external components such as a coil.

9. When V

IN

is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.

10. Depending on the state of the PC Board, latch time may become longer and latch operation may not work. In order to avoid

the effect of noise, the board should be laid out so that input capacitors are placed as close to the IC as possible.

11. Use of the IC at voltages below the minimum operating voltage range may lead to instability.

12. This IC should be used within the stated absolute maximum ratings of external components in order to prevent damage to

the device.

13. When the IC is used in high temperature, output voltage may increase up to input voltage level at no load because of the

leak current of the driver transistor.

14. The current limit is set to 1000mA (MAX.)

at typical. However, the current of 1000mA or more may flow.

In case that the current limit functions while the V

OUT

pin is shorted to the GND pin, when P-ch MOSFET is ON, the

potential difference for input voltage will occur at both ends of a coil. For this, the time rate of coil current becomes large.

By contrast, when N-ch MOSFET is ON, there is almost no potential difference at both ends of the coil since the V

OUT

pin is

shorted to the GND pin. Consequently, the time rate of coil current becomes quite small. According to the repetition of this

operation, and the delay time of the circuit, coil current will be converged on a certain current value, exceeding the amount

of current, which is supposed to be limited originally. Even in this case, however, after the over current state continues for

several ms, the circuit will be latched. A coil should be used within the stated absolute maximum rating in order to prevent

damage to the device.

①

Current flows into P-ch MOSFET to reach the current limit (I

LIM

).

②

The current of I

LIM

or more flows since the delay time of the circuit occurs during from the detection of the current limit to OFF of P-ch MOSFET.

③

Because of no potential difference at both ends of the coil, the time rate of coil current becomes quite small.

④

Lx oscillates very narrow pulses by the current limit for several ms.

⑤

The circuit is latched, sto

pp

in

g

its o

p

eration.

Delay Limit

＞

#ms

②

① ③ ④ ⑤

Lx

ILIM

ILx

XCL208 209 XCL208 209 TOREX TOREX mum USP-“Em

14/22

XCL208/XCL209 Series

■NOTE ON USE (Continued)

15. In order to stabilize VIN voltage level and oscillation frequency, we recommend that a by-pass capacitor (CIN) be connected as

close as possible to the VIN & VSS pins.

16. High step-down ratio and very light load may lead an intermittent oscillation when PWM mode.

17. For the XCL209, when PWM/PFM automatic switching goes into continuous mode, the IC may be in unstable operation for

the range of MAXDUTY area with small input/output differential. Once the design has been completed, verification with actual

components should be done.

18. Torex places an importance on improving our products and their reliability.

We request that users incorporate fail-safe designs and post-aging protection treatment when using Torex products in their

systems.

19. Instructions of pattern layouts

(1) In order to stabilize VIN voltage level, we recommend that a by-pass capacitor (CIN) be connected as close as possible to

the VIN (No.8) and PVSS (No.1) pins.

(2) Please mount each external component as close to the IC as possible.

(3) Wire external components as close to the IC as possible and use thick, short connecting traces to reduce the circuit

impedance.

(4) Make sure that the PCB GND traces are as thick as possible, as variations in ground potential caused by high ground

currents at the time of switching may result in instability of the IC.

(5) Internal driver transistors bring on heat because of the output current and ON resistance of the driver transistors.

(6) Please connect Lx (No.2) pin and L1 (No.9) pin on the PCB layout.

(7) Please connect VOUT (No.4) pin and L2 (No.10) pin on the PCB layout. (Type A/B)

CL

VOUT

GND

CIN

VIN GND

CE

IC

XCL208/209

USP-10B03

TOREX

LX

RFB1

CFB

FB

CL

VOUT

GND

CIN

VIN GND

CE

IC

XCL208/209

USP-10B03

TOREX

LX

RFB1

CFB

FB

（TOP VIEW）（BOTTOM VIEW）（PCB mounted TOP VIEW）

: IC

: Ceramic Cap

: Chip Resistance

15/22

XCL208/XCL209

Series

■NOTE ON USE (Continued)

20. Typical application circuit

NOTE:

The integrated Inductor can be used only for this DC/DC converter. Please do not use this inductor for other reasons.

Please use B, X5R, and X7R grades in temperature characteristics for the C

IN

and C

L

capacitors.

These grade ceramic capacitors minimize capacitance-loss as a function of voltage stress.

If necessary, increase capacitance by adding or replacing.

Examples of external components

PART NUMBER MANUFACTURE RATED VOLTAGE / INDUCTANCE /

FEATURES Size (L×W)

C

IN

LMK107BJ475KA TAIYO YUDEN 10V/4.7μF/X5R 1.6mm×0.8mm

LMK212B7475KG TAIYO YUDEN 10V/4.7μF/X7R 2.0mm×1.25mm

C

L

LMK107BBJ106MA TAIYO YUDEN 10V/10μF/X5R 1.6mm×0.8mm

LMK212B7106MG TAIYO YUDEN 10V/4.7μF/X7R 2.0mm×1.25mm

Example of external components

C

IN

: 10V/4.7μF（LMK107BJ475KA TAIYO YUDEN）

C

L

: 10V/10μF（LMK107BBJ106MA TAIYO YUDEN）

Example of external components (V

OUT

=1.8V)

C

IN

: 10V/4.7μF（LMK107BJ475KA TAIYO YUDEN）

C

L

: 10V/10μF（LMK107BBJ106MA TAIYO YUDEN）

R

FB1

: 300kΩ

R

FB2

: 240kΩ

C

FB

: 150pF（C1005CH1H151J TDK）

L2

VIN VOUT

AVSS

L1 LX

PVSS

CE

CIN CL

VOUT

VIN

VCE

L2

VIN FB

AVSS

L1 LX

PVSS

CE

CL

CIN

CFB

RFB 1

RFB 2

VOUT

VIN

VCE

XCL209

16/22

XCL208/XCL209 Series

■TYPICAL PERFORMANCE CHARACTERISTICS

(1) Efficiency vs. Output Current (2) Output Voltage vs. Output Current

(3) Ripple Voltage vs. Output Current (4) Oscillation Frequency vs. Ambient Temperature

(5) Supply Current vs. Ambient Temperature (6) Output Voltage vs. Ambient Temperature

0

20

40

60

80

100

0.1 1 10 100 1000

Output Current:I

OUT

(mA)

Efficiency:EFFI(%

)

(

PWM

)

2.4V

　　　　3.6V

V

IN

= 4.2V

XCL209(PWM/PFM)

XCL208

1.5

1.6

1.7

1.8

1.9

2.0

2.1

0.1 1 10 100 1000

Output Current:I

OUT

(mA)

Output Voltage:V

OUT

(V)

V

IN

=4.2V,3.6V,2.4V

XCL208/XCL209

0

20

40

60

80

100

0.1 1 10 100 1000

Output Current:I

OUT

(mA)

Ripple Voltage:Vr(mV)

V

IN

=2.4

V

XCL208 XCL209

V

IN

=2.4V

3.6V,4.2

3.6V,4.2V

2.5

2.6

2.7

2.8

2.9

3.0

3.1

3.2

3.3

3.4

3.5

-50 -25 0 25 50 75 100

Ambient Temperature: Ta (℃)

V

IN

=3.6V

Oscillation Frequency : fosc(MHz)

0

5

10

15

20

25

30

35

40

-50 -25 0 25 50 75 100

Ambient Temperature: Ta (

℃

)

Supply Current : I

DD

(μA)

V

IN

=6.0V

4.0V

2.0V

1.5

1.6

1.7

1.8

1.9

2.0

2.1

-50 -25 0 25 50 75 100

Ambient Temperature: Ta (

℃

)

Output Voltage : V

OUT

(V)

V

IN

=3.6V

XCL208B183DR/XCL209B183DR XCL208B183DR/XCL209B183DR

XCL209B183DR XCL208B183DR/XCL209B183DR

17/22

XCL208/XCL209

Series

■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

(7) UVLO Voltage vs. Ambient Temperature (8) CE "H" Voltage vs. Ambient Temperature

(9) CE "L" Voltage vs. Ambient Temperature (10) Soft Start Time vs. Ambient Temperature

(11) "Pch / Nch" Driver on Resistance vs. Input Voltage (12) Rise Wave Form

0.0

0.3

0.6

0.9

1.2

1.5

1.8

-50-250 255075100

Ambient Temperature: Ta (

℃

)

UVLO Voltage : UVLO (V)

CE=V

IN

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

-50 -25 0 25 50 75 100

Ambient Temperature: Ta (

℃

)

CE "H" Voltage : V

CEH

(V)

V

IN

=5.0V

3.6V

2.4V

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

-50 -25 0 25 50 75 100

Ambient Temperature: Ta (

℃

)

CE "L" Voltage : V

CEL

(V)

V

IN

=5.0V

3.6V

2.4V

0.0

1.0

2.0

3.0

4.0

5.0

-50 -25 0 25 50 75 100

Ambient Temperature: Ta (

℃

)

Soft Start Time : tss (ms)

V

IN

=3.6V

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

0123456

Input Voltage : V

IN

(V)

Pch on Resistance

Nch on Resistance

Lx SW ON Resistance:RLxH,RLxL (Ω)

XCL208B333DR/XCL209B333DR

XCL208B183DR/XCL209B183DR

XCL208B183DR/XCL209B183DR XCL208B183DR/XCL209B183DR

XCL208B183DR/XCL209B183DR

CE:0.0V⇒1.0V

V

IN

= 5.0V

I

OUT

= 1.0mA

Time:100μs/div

V

OUT

1ch

2ch

1ch:1V/div 2ch:1V/div

vmza $1,le .sv Imam: mar-IA 1m >I—J Van mbW Iahtloﬂd/div mnsrm/uiv TIme:10(]usIdiv vfa Emma av Ia" :mnmA a um 1m >1— mm Vwr m. mar-Wm hum-Mm TIme:1 Oousldiv Vnzi svymF‘ av anaw 1m )— Imnomn/div mnsrm/uiv Timet100usldiv HFM=1M 1m > ‘m I \ 1m hm Vour 1m IDOmNdIV lch 50mV/m TIme:1 Oousldiv

18/22

XCL208/XCL209

Series

■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

(13) Soft-Start Time vs. Ambient Temperature (14) C

L

Discharge Resistance vs. Ambient Temperature

(15) Load Transient Response

MODE：PWM/PFM Automatic Switching Control

0

100

200

300

400

500

-50 -25 0 25 50 75 100

Ambient Temperature: Ta (

℃

)

V

IN

=5.0V

I

OUT

=1.0mA

Soft Start Time : tss (μs)

100

200

300

400

500

600

-50 -25 0 25 50 75 100

Ambient Temperature: Ta (

℃

)

CL Discharge Resistance: (Ω

)

V

IN

=6.0V

4.0V

2.0V

XCL208B333DR/XCL209B333DR XCL208B333DR/XCL209B333DR

XCL209B183DR XCL209B183DR

law/ma sv Iann=Im m. b—J Vour MW m- Ioonwm Zeh'SOMV/dw Time:100usldiv M~:36V,le;1 8V m- mom/aw zcn'somvraw TIme'100us/div 16V)!” 1.8V lmyﬁllnA= worm am >— m- Ioonwm Zeh'SOMV/dw Time:100usldiv vu:3 W,Vouv:1 av '0‘"va 2 1M 1m y r———————— mow—u.- Vow m- mom/aw zcn'somvraw TIme:100us/div

19/22

XCL208/XCL209

Series

■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)

(15) Load Transient Response (Continued)

MODE：PWM Control

XCL208B183DR XCL208B183DR

XCL208/XCL209 www.mrexsemi.com/‘echmca\-suggonlgackages ‘ USP-10303 PKG USP-10303 Power Dwsswgauon

20/22

XCL208/XCL209 Series

■PACKAGING INFORMATION

For the latest package information go to, www.torexsemi.com/technical-support/packages

PACKAGE OUTLINE / LAND PATTERN THERMAL CHARACTERISTICS

USP-10B03 USP-10B03 PKG Standard Board USP-10B03 Power Dissipation

TOIREX

21/22

XCL208/XCL209

Series

■MARKING RULE

①

represents products series

②

represents integer of output voltage and oscillation frequency

③

represents the decimal part of output voltage

Example

（

Mark

②

,

③）

④

,

⑤

represents production lot number

01～09, 0A～0Z, 11～9Z, A1～A9, AA～AZ, B1～ZZ in order.

(G, I, J, O, Q, W excluded)

*No character inversion used.

MARK PRODUCT SERIES

8 XCL208******

9 XCL209******

OUTPUT

VOLTAGE(V)

MARK

OSCILLATION FREQUENCY =3.0MHz

(XCL20*F**3**(FB) (XCL20*A**3**) (XCL20*B**3**)

0.x F 0 A

1.x

-

1 B

2.x 2 C

3.x 3 D

4.x 4 E

OUTPUT

VOLTAGE (V) MARK

PRODUCT SERIES

OUTPUT

VOLTAGE (V) MARK

PRODUCT SERIES

X.0 0 XCL20***0*** X.05 A XCL20***A***

X.1 1 XCL20***1*** X.15 B XCL20***B***

X.2 2 XCL20***2*** X.25 C XCL20***C***

X.3 3 XCL20***3*** X.35 D XCL20***D***

X.4 4 XCL20***4*** X.45 E XCL20***E***

X.5 5 XCL20***5*** X.55 F XCL20***F***

X.6 6 XCL20***6*** X.65 H XCL20***H***

X.7 7 XCL20***7*** X.75 K XCL20***K***

X.8 8 XCL20***8*** X.85 L XCL20***L***

X.9 9 XCL20***9*** X.95 M XCL20***M***

OSCILLATION

FREQUENCY

MARK

XCL20*F08*** XCL20*A18*** XCL20*B3D***

② ③ ② ③ ② ③

3.0MHz F 8 1 8 D D

⑤④

① ②

1

2

3

8

7

6

③

45

USP-10B03

22/22

XCL208/XCL209 Series

1. The product and product specifications contained herein are subject to change without notice to

improve performance characteristics. Consult us, or our representatives before use, to confirm that

the information in this datasheet is up to date.

2. The information in this datasheet is intended to illustrate the operation and characteristics of our

products. We neither make warranties or representations with respect to the accuracy or completeness

of the information contained in this datasheet nor grant any license to any intellectual property rights

of ours or any third party concerning with the information in this datasheet.

3. Applicable export control laws and regulations should be complied and the procedures required by

such laws and regulations should also be followed, when the product or any information contained in

this datasheet is exported.

4. The product is neither intended nor warranted for use in equipment of systems which require extremely

high levels of quality and/or reliability and/or a malfunction or failure which may cause loss of human

life, bodily injury, serious property damage including but not limited to devices or equipment used in 1)

nuclear facilities, 2) aerospace industry, 3) medical facilities, 4) automobile industry and other

transportation industry and 5) safety devices and safety equipment to control combustions and

explosions. Do not use the product for the above use unless agreed by us in writing in advance.

5. Although we make continuous efforts to improve the quality and reliability of our products; nevertheless

Semiconductors are likely to fail with a certain probability. So in order to prevent personal injury and/or

property damage resulting from such failure, customers are required to incorporate adequate safety

measures in their designs, such as system fail safes, redundancy and fire prevention features.

6. Our products are not designed to be Radiation-resistant.

7. Please use the product listed in this datasheet within the specified ranges.

8. We assume no responsibility for damage or loss due to abnormal use.

Semiconductor Ltd in writing in advance.

TOREX SEMICONDUCTOR LTD.

XCL208, XCL209 Series Datasheet by Torex Semiconductor Ltd

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