TL284xB, TL384xB Datasheet by Texas Instruments

View All Related Products | Download PDF Datasheet
4“ TEXAS INSTRUMENTS www.|i.com [ U ] [ ] [ ] RT’CTE4 5] [ U ] [ ] [ ] NC[4 m] ‘SENSEES ‘0] NCEe 9] RT/CTE7 B] NC 7 Nu Interna‘ connection
www.ti.com
FEATURES
1
2
3
4
8
7
6
5
COMP
VFB
ISENSE
RT/CT
VREF
VCC
OUTPUT
GND
D (SOIC) OR P (PDIP) PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
14
13
12
11
10
9
8
COMP
NC
VFB
NC
ISENSE
NC
RT/CT
VREF
NC
VCC
VC
OUTPUT
GND
POWER GROUND
D (SOIC) PACKAGE
(TOP VIEW)
NC − No internal connection
DESCRIPTION/ORDERING INFORMATION
TL284xB , TL384xBHIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
Low Start-Up Current (<0.5 mA)Trimmed Oscillator Discharge CurrentCurrent Mode Operation to 500 kHzAutomatic Feed-Forward CompensationLatching PWM for Cycle-by-Cycle CurrentLimiting
Internally Trimmed Reference WithUndervoltage LockoutHigh-Current Totem-Pole Output UndervoltageLockout With HysteresisDouble-Pulse Suppression
The TL284xB and TL384xB series of control integrated circuits provide the features that are necessary toimplement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number ofexternal components. Internally implemented circuits include an undervoltage lockout (UVLO) and a precisionreference that is trimmed for accuracy at the error amplifier input. Other internal circuits include logic to ensurelatched operation, a pulse-width modulation (PWM) comparator that also provides current-limit control, and atotem-pole output stage designed to source or sink high-peak current. The output stage, suitable for drivingN-channel MOSFETs, is low when it is in the off state.
The TL284xB and TL384xB series are pin compatible with the standard TL284x and TL384x with the followingimprovements. The start-up current is specified to be 0.5 mA (max), while the oscillator discharge current istrimmed to 8.3 mA (typ). In addition, during undervoltage lockout conditions, the output has a maximumsaturation voltage of 1.2 V while sinking 10 mA (V
CC
= 5 V).
Major differences between members of these series are the UVLO thresholds and maximum duty-cycle ranges.Typical UVLO thresholds of 16 V (on) and 10 V (off) on the TLx842B and TLx844B devices make them ideallysuited to off-line applications. The corresponding typical thresholds for the TLx843B and TLx845B devices are8.4 V (on) and 7.6 V (off). The TLx842B and TLx843B devices can operate to duty cycles approaching 100%. Aduty-cycle range of 0% to 50% is obtained by the TLx844B and TLx845B by the addition of an internal toggleflip-flop, which blanks the output off every other clock cycle.The TL284xB-series devices are characterized foroperation from –40 °C to 85 °C. The TL384xB-series devices are characterized for operation from 0 °C to 70 °C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2006–2007, Texas Instruments IncorporatedProducts conform to specifications per the terms of the TexasInstruments standard warranty. Production processing does notnecessarily include testing of all parameters.
J9 TEXAS INSTRUMENTS www.mmm
www.ti.com
TL284xB , TL384xBHIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
ORDERING INFORMATION
T
A
PACKAGE
(1)
ORDERABLE PART NUMBER TOP-SIDE MARKING
TL2842BP TL2842BP
TL2843BP TL2843BPPDIP – P Tube of 50
TL2844BP TL2844BP
TL2845BP TL2845BP
Tube of 75 TL2842BD-8
2842BReel of 2500 TL2842BDR-8
Tube of 75 TL2843BD-8
2843BReel of 2500 TL2843BDR-8SOIC – D (8 pin)
Tube of 75 TL2844BD-8
2844BReel of 2500 TL2844BDR-8–40 °C to 85 °C
Tube of 75 TL2845BD-8
2845BReel of 2500 TL2845BDR-8
Tube of 75 TL2842BD
TL2842BReel of 2500 TL2842BDR
Tube of 75 TL2843BD
TL2843BReel of 2500 TL2843BDRSOIC – D (14 pin)
Tube of 75 TL2844BD
TL2844BReel of 2500 TL2844BDR
Tube of 75 TL2845BD
TL2845BReel of 2500 TL2845BDR
TL3842BP TL3842BP
TL3843BP TL3843BPPDIP – P Tube of 50
TL3844BP TL3844BP
TL3845BP TL3845BP
Tube of 75 TL3842BD-8
3842BReel of 2500 TL3842BDR-8
Tube of 75 TL3843BD-8
3843BReel of 2500 TL3843BDR-8SOIC – D (8 pin)
Tube of 75 TL3844BD-8
3844BReel of 2500 TL3844BDR-80°C to 70 °C
Tube of 75 TL3845BD-8
3845BReel of 2500 TL3845BDR-8
Tube of 75 TL3842BD
TL3842BReel of 2500 TL3842BDR
Tube of 75 TL3843BD
TL3843BReel of 2500 TL3843BDRSOIC – D (14 pin)
Tube of 75 TL3844BD
TL3844BReel of 2500 TL3844BDR
Tube of 75 TL3845BD
TL3845BReel of 2500 TL3845BDR
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available atwww.ti.com/sc/package.
2
Submit Documentation Feedback
*9 TEXAS INSTRUMENTS www.ll.cnm Vcc 34 V NOM 5-V Vnzr G MD 5 . 4- EN ”7 Inler Bia VREF Good Logic 4 RT/Cr osc u ,i Error Amplifier s PWM VFB R Lalch 1 V COMP Current- Sense 3 T Comparator lszusa
www.ti.com
Internal
Bias
VREF
Good
Logic
OSC
Error
Amplifier
PWM
Latch
Current-
Sense
Comparator
34 V NOM
VCC
GND
RT/CT
VFB
COMP
ISENSE
7
5
4
2
1
3
8
6
VREF
OUTPUT
+
UVLO
EN
2R
R1 V
S
R
T
+
5-V VREF
2.5 V
TL284xB , TL384xBHIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
FUNCTIONAL BLOCK DIAGRAM
A. Pin numbers shown are for the 8-pin D package.
3Submit Documentation Feedback
J9 TEXAS INSTRUMENTS www.mmm
www.ti.com
Absolute Maximum Ratings
(1) (2)
Recommended Operating Conditions
TL284xB , TL384xBHIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
Low impedance source 30
V
CC
Supply voltage VSelfI
CC
< 30 mA
limiting
V
I
Analog input voltage range VFB and I
SENSE
–0.3 6.3 V
I
CC
Supply current 30 mA
I
O
Output current ±1 A
I
O(sink)
Error amplifier output sink current 10 mA
8 pin 97D packageθ
JA
Package thermal impedance
(3) (4)
14 pin 86 °C/W
P package 85
Output energy Capacitive load 5 μJ
T
J
Virtual junction temperature 150 °C
T
stg
Storage temperature range –65 150 °C
T
lead
Lead temperature Soldering, 10 s 300 °C
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratingsonly, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operatingconditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.(2) All voltages are with respect to the device GND terminal.(3) Maximum power dissipation is a function of T
J
(max), θ
JA
, and T
A
. The maximum allowable power dissipation at any allowable ambienttemperature is P
D
= (T
J
(max) – T
A
)/ θ
JA
. Operating at the absolute maximum T
J
of 150 °C can impact reliability.(4) The package thermal impedance is calculated in accordance with JESD 51-7.
MIN NOM MAX UNIT
V
CC
30V
CC
Supply voltage VVC
(1)
30
R
T
/C
T
0 5.5V
I
Input voltage VVFB and I
SENSE
0 5.5
OUTPUT 0 30V
O
Output voltage VPOWER GROUND
(1)
–0.1 1
I
CC
Supply current, externally limited 25 mA
I
O
Average output current 200 mA
I
O(ref)
Reference output current –20 mA
f
osc
Oscillator frequency 100 500 kHz
TL284xB –40 85T
J
Operating free-air temperature °CTL384xB 0 70
(1) The recommended voltages for VC and POWER GROUND apply only to the 14-pin D package.
4
Submit Documentation Feedback
J9 TEXAS INSTRUMENTS www.mmm
www.ti.com
Reference Section Electrical Characteristics
Oscillator Section
(1)
Electrical Characteristics
TL284xB , TL384xBHIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
V
CC
= 15 V
(1)
, R
T
= 10 k , C
T
= 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB TL384xBPARAMETER TEST CONDITIONS UNITMIN TYP
(2)
MAX MIN TYP
(2)
MAX
Output voltage I
O
= 1 mA, T
J
= 25 °C 4.95 5 5.05 4.9 5 5.1 V
Line regulation V
CC
= 12 V to 25 V 6 20 6 20 mV
Load regulation I
O
= 1 mA to 20 mA 6 25 6 25 mV
Average temperature
0.2 0.4 0.2 0.4 mV/ °Ccoefficient of output voltage
Output voltage, worst-case V
CC
= 12 V to 25 V,
4.9 5.1 4.82 5.18 Vvariation I
O
= 1 mA to 20 mA
Output noise voltage f = 10 Hz to 10 kHz, T
J
= 25 °C 50 50 μV
Output-voltage long-term drift After 1000 h at T
J
= 25 °C 5 25 5 25 mV
Short-circuit output current –30 –100 –180 –30 –100 –180 mA
(1) Adjust V
CC
above the start threshold before setting it to 15 V.(2) All typical values are at T
J
= 25 °C.
V
CC
= 15 V
(2)
, R
T
= 10 k , C
T
= 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB TL384xBPARAMETER TEST CONDITIONS UNITMIN TYP
(3)
MAX MIN TYP
(3)
MAX
T
J
= 25 °C 49 52 55 49 52 55
T
A
= T
low
to T
high
48 56 48 56Initial accuracy kHzT
J
= 25 °C, R
T
= 6.2 k ,
225 250 275 225 250 275C
T
= 1 nF
Voltage stability V
CC
= 12 V to 25 V 0.2 1 0.2 1 %
Temperature stability 5 5 %
Amplitude Peak to peak 1.7 1.7 V
T
J
= 25 °C, R
T
/C
T
= 2 V 7.8 8.3 8.8 7.8 8.3 8.8Discharge current mAR
T
/C
T
= 2 V 7.5 8.8 7.6 8.8
(1) Output frequency equals oscillator frequency for the TL3842B and TL3843B. Output frequency is one-half the oscillator frequency for theTL3844B and TL3845B.(2) Adjust V
CC
above the start threshold before setting it to 15 V.(3) All typical values are at T
J
= 25 °C.
5Submit Documentation Feedback
J9 TEXAS INSTRUMENTS www.mmm
www.ti.com
Error-Amplifier Section Electrical Characteristics
Current-Sense Section Electrical Characteristics
TL284xB , TL384xBHIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
V
CC
= 15 V
(1)
, R
T
= 10 k , C
T
= 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB TL384xBPARAMETER TEST CONDITIONS UNITMIN TYP
(2)
MAX MIN TYP
(2)
MAX
Feedback input voltage COMP = 2.5 V 2.45 2.5 2.55 2.42 2.5 2.58 V
Input bias current –0.3 –1 –0.3 –2 μA
Open-loop voltage
V
O
= 2 V to 4 V 65 90 65 90 dBamplification
Gain-bandwidth product 0.7 1 0.7 1 MHz
Supply-voltage rejection ratio V
CC
= 12 V to 25 V 60 70 60 70 dB
Output sink current VFB = 2.7 V, COMP = 1.1 V 2 6 2 6 mA
Output source current VFB = 2.3 V, COMP = 5 V –0.5 –0.8 –0.5 –0.8 mA
VFB = 2.3 V,High-level output voltage 5 6 5 6 VR
L
= 15 k to GND
VFB = 2.7 V,Low-level output voltage 0.7 1.1 0.7 1.1 VR
L
= 15 k to GND
(1) Adjust V
CC
above the start threshold before setting it to 15 V.(2) All typical values are at T
J
= 25 °C.
V
CC
= 15 V
(1)
, R
T
= 10 k , C
T
= 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB TL384xBPARAMETER TEST CONDITIONS UNITMIN TYP
(2)
MAX MIN TYP
(2)
MAX
Voltage amplification
(3) (4)
2.85 3 3.15 2.85 3 3.15 V/V
Current-sense comparator
COMP = 5 V 0.9 1 1.1 0.9 1 1.1 Vthreshold
(3)
Supply-voltage rejection
V
CC
= 12 V to 25 V 70 70 dBratio
(3)
Input bias current –2 –10 –2 –10 μA
Delay time to output VFB = 0 V to 2 V 150 300 150 300 ns
(1) Adjust V
CC
above the start threshold before setting it to 15 V.(2) All typical values are at T
J
= 25 °C.(3) Measured at the trip point of the latch, with VFB at 0 V.(4) Measured between I
SENSE
and COMP, with the input changing from 0 V to 0.8 V.
6
Submit Documentation Feedback
J9 TEXAS INSTRUMENTS www.mmm
www.ti.com
Output Section Electrical Characteristics
Undervoltage-Lockout Section Electrical Characteristics
Pulse-Width Modulator Section Electrical Characteristics
Supply Voltage Electrical Characteristics
TL284xB , TL384xBHIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
V
CC
= 15 V
(1)
, R
T
= 10 k , C
T
= 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB TL384xBPARAMETER TEST CONDITIONS UNITMIN TYP
(2)
MAX MIN TYP
(2)
MAX
I
OH
= –20 mA 13 13.5 13 13.5High-level output voltage VI
OH
= –200 mA 12 13.5 12 13.5
I
OL
= 20 mA 0.1 0.4 0.1 0.4Low-level output voltage VI
OL
= 200 mA 1.5 2.2 1.5 2.2
Rise time C
L
= 1 nF, T
J
= 25 °C 50 150 50 150 ns
Fall time C
L
= 1 nF, T
J
= 25 °C 50 150 50 150 ns
UVLO saturation V
CC
= 5 V, I
OL
= 1 mA 0.7 1.2 0.7 1.2 V
(1) Adjust V
CC
above the start threshold before setting it to 15 V.(2) All typical values are at T
J
= 25 °C.
V
CC
= 15 V
(1)
, R
T
= 10 k , C
T
= 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB TL384xBPARAMETER TEST CONDITIONS UNITMIN TYP
(2)
MAX MIN TYP
(2)
MAX
TLx842B, TLx844B 15 16 17 14.5 16 17.5Start threshold voltage VTLx843B, TLx845B 7.8 8.4 9 7.8 8.4 9
TLx842B, TLx844B 9 10 11 8.5 10 11.5Minimum operating voltage
Vafter start-up
TLx843B, TLx845B 7 7.6 8.2 7 7.6 8.2
(1) Adjust V
CC
above the start threshold before setting it to 15 V.(2) All typical values are at T
J
= 25 °C.
V
CC
= 15 V
(1)
, R
T
= 10 k , C
T
= 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB TL384xBPARAMETER TEST CONDITIONS UNITMIN TYP
(2)
MAX MIN TYP
(2)
MAX
TL3842B, TL3843B 94 96 100 94 96 100Maximum duty cycle %TL3844B, TL3845B 47 48 50 47 48 50
Minimum duty cycle 0 0 %
(1) Adjust V
CC
above the start threshold before setting it to 15 V.(2) All typical values are at T
J
= 25 °C.
V
CC
= 15 V
(1)
, R
T
= 10 k , C
T
= 3.3 nF, over recommended operating free-air temperature range (unless otherwise specified)
TL284xB TL384xBPARAMETER TEST CONDITIONS UNITMIN TYP
(2)
MAX MIN TYP
(2)
MAX
Start-up current 0.3 0.5 0.3 0.5 mA
Operating supply current VFB and I
SENSE
at 0 V 11 17 11 17 mA
Limiting voltage I
CC
= 25 mA 30 34 30 34 V
(1) Adjust V
CC
above the start threshold before setting it to 15 V.(2) All typical values are at T
J
= 25 °C.
7Submit Documentation Feedback
M TEXAS INSTRUMENTS www.|l.cnm
www.ti.com
TYPICAL CHARACTERISTICS
-20
0
20
40
60
80
100
1 . E +0 1 1 . E +0 2 1 . E +0 3 1 . E +0 4 1 . E +0 5 1 . E +0 6 1 . E +0 7
f – Frequency – Hz
AVOL – Open-Loop Voltage Gain – dB
-100
-50
0
50
100
150
200
Phase Margin – deg
VCC = 15 V
RL= 100 kX
TA= 25°C
Phase
Gain
k
10 100 1k 10k 100k 1M 10M
TL2845
VIN = 15 V
VIN = 15 V
VOSC = 2 V
TL284xB , TL384xBHIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
ERROR AMPLIFIER OPEN-LOOPSUPPLY CURRENT GAIN AND PHASEvs vsSUPPLY VOLTAGE FREQUENCY
CURRENT-SENSE INPUT THRESHOLD OSCILLATOR DISCHARGE CURRENTvs vsERROR AMPLIFIER OUTPUT VOLTAGE TEMPERATURE
8
Submit Documentation Feedback
M TEXAS INSTRUMENTS www.|l.cnm
www.ti.com
-60
-50
-40
-30
-20
-10
0
0 20 40 60 80 100 120 140 160
Isrc – Source Current – mA
Reference Voltage Delta – mV
TA= -40°C
TA= 25°C
TA= 125°C
VIN = 15 V
Source Saturation
TL284xB , TL384xBHIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
TYPICAL CHARACTERISTICS (continued)
REFERENCE VOLTAGE REFERENCE VOLTAGEvs vsSOURCE CURRENT TEMPERATURE
REFERENCE SHORT-CIRCUIT CURRENT OUTPUT SATURATION VOLTAGEvs vsTEMPERATURE LOAD CURRENT
9Submit Documentation Feedback
M TEXAS INSTRUMENTS www.ll.com Tek Run Q [+] Trig‘d -[ 1o.ovv ‘M‘1.00us A‘ CH2 \ 2.00v
www.ti.com
VCC = 15 V
CT= 3.3 nF
TA= 25°C
k
TL284xB , TL384xBHIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
TYPICAL CHARACTERISTICS (continued)
MAXIMUM OUTPUT DUTY CYCLEvsTIMING RESISTOR
OUTPUT WAVEFORM
10
Submit Documentation Feedback
J9 TEXAS INSTRUMENTS www.|l.cnm Error Amplifier VFB i 2' COMP Cc da
www.ti.com
APPLICATION INFORMATION
Zi
Zf
VFB
COMP
2.5 V 0.5 mA
Error
Amplifier
+
RSCf
Rf
Error
Amplifier
2R
R1 V Current-Sense
Comparator
IS
(see Note A) +
ISENSE
COMP
GND
CT
RT
VREF
RT/CT
GND
TL284xB , TL384xBHIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
The error-amplifier configuation circuit is shown in Figure 1 .
A. Error amplifier can source or sink up to 0.5 mA.
Figure 1. Error-Amplifier Configuration
The current-sense circuit is shown in Figure 2 .
A. Peak current (I
S
) is determined by the formula: I
S(max)
= 1 V/R
S
B. A small RC filter formed by resistor R
f
and capacitor C
f
may be required to suppress switch transients.
Figure 2. Current-Sense Circuit
The oscillator frequency is set using the circuit shown in Figure 3 . The frequency is calculated as:f = 1 / R
T
C
T
For R
T
> 5 k :f1.72 / R
T
C
T
Figure 3. Oscillator Section
11Submit Documentation Feedback
J9 TEXAS INSTRUMENTS www.|l.cnm
www.ti.com
TIMING RESISTANCE
vs
FREQUENCY
100 1k 10k 100k 1M
f − Frequency − Hz
RT− Timing Resistance − k
100
40
10
4
1
VCC = 15 V
TA = 25°C
CT = 22 nF
CT = 47 nF
CT = 100 nF
CT = 10 nF
CT = 4.7 nF
CT = 2.2 nF
CT = 1 nF
DEAD TIME
vs
TIMING CAPACITANCE
sµ
100401041
CT − Timing Capacitance − nF
100
40
10
4
1
0.4
0.1
Dead Time −
VCC = 15 V
RT 5 k
TA = 25°C
Open-Loop Laboratory Test Fixture
2N2222
4.7 k
1-k
Error Amplifier Adjust
4.7 k5 k
ISENSE
Adjust
RT
100 k
VCC
0.1 µF
0.1 µF
REF
VCC
OUTPUT
GND
1 k, 1 W
A
CT
TL284xB
TL384xB
ISENSE
VREF
RT/CT
VFB
COMP
OUTPUT
GND
TL284xB , TL384xBHIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
APPLICATION INFORMATION (continued)
In the open-loop laboratory test fixture (see Figure 4 ), high peak currents associated with loads necessitatecareful grounding techniques. Timing and bypass capacitors should be connected close to the GND terminal in asingle-point ground. The transistor and 5-k potentiometer sample the oscillator waveform and apply anadjustable ramp to the I
SENSE
terminal.
Figure 4. Open-Loop Laboratory Test Fixture
12
Submit Documentation Feedback
J9 TEXAS INSTRUMENTS www.|l.cnm
www.ti.com
Shutdown Technique
330
1 k
500
To Current-Sense
Resistor
Shutdown
Shutdown
COMP
VREF
ISENSE
RT
0.1 µF
CT
R1
R2
ISENSE
RSENSE
C
VREF
RT/CT
ISENSE
TL284xB , TL384xBHIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
SLVS610B – AUGUST 2006 – REVISED JULY 2007
APPLICATION INFORMATION (continued)
The PWM controller (see Figure 5 ) can be shut down by two methods: either raise the voltage at I
SENSE
above1 V or pull the COMP terminal below a voltage two diode drops above ground. Either method causes the outputof the PWM comparator to be high (refer to block diagram). The PWM latch is reset dominant so that the outputremains low until the next clock cycle after the shutdown condition at the COMP or I
SENSE
terminal is removed.In one example, an externally latched shutdown can be accomplished by adding an SCR that resets by cyclingV
CC
below the lower UVLO threshold. At this point, the reference turns off, allowing the SCR to reset.
Figure 5. Shutdown Techniques
A fraction of the oscillator ramp can be summed resistively with the current-sense signal to provide slopecompensation for converters requiring duty cycles over 50% (see Figure 6 ). Note that capacitor C forms a filterwith R2 to suppress the leading-edge switch spikes.
Figure 6. Slope Compensation
13Submit Documentation Feedback
I TEXAS INSTRUMENTS Samples Samples Samples Samples Samples Samples Samples Samples Samples Sample: Sample: Samples Samples Samples Samples Samples Samples Samples Samples Samples
PACKAGE OPTION ADDENDUM
www.ti.com 10-Dec-2020
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status
(1)
Package Type Package
Drawing Pins Package
Qty Eco Plan
(2)
Lead finish/
Ball material
(6)
MSL Peak Temp
(3)
Op Temp (°C) Device Marking
(4/5)
Samples
TL2842BD ACTIVE SOIC D 14 50 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 TL2842B
TL2842BD-8 ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 2842B
TL2842BDR ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 TL2842B
TL2842BDR-8 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 2842B
TL2842BP ACTIVE PDIP P 8 50 RoHS & Green NIPDAU N / A for Pkg Type -40 to 85 TL2842BP
TL2843BD ACTIVE SOIC D 14 50 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 TL2843B
TL2843BD-8 ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 2843B
TL2843BDR ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 TL2843B
TL2843BDR-8 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 2843B
TL2843BDRG4-8 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 2843B
TL2843BP ACTIVE PDIP P 8 50 RoHS & Green NIPDAU N / A for Pkg Type -40 to 85 TL2843BP
TL2844BD-8 ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 2844B
TL2844BDR ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 TL2844B
TL2844BDR-8 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 2844B
TL2844BDRG4-8 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 2844B
TL2845BD ACTIVE SOIC D 14 50 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 TL2845B
TL2845BD-8 ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 2845B
TL2845BDR ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 TL2845B
TL2845BDR-8 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 2845B
TL2845BDRG4-8 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 2845B
I TEXAS INSTRUMENTS Samples Samples Samples Samples Samples Samples Samples Samples Samples Sample: Sample: Samples Samples Samples Samples Samples Samples Samples Samples Samples
PACKAGE OPTION ADDENDUM
www.ti.com 10-Dec-2020
Addendum-Page 2
Orderable Device Status
(1)
Package Type Package
Drawing Pins Package
Qty Eco Plan
(2)
Lead finish/
Ball material
(6)
MSL Peak Temp
(3)
Op Temp (°C) Device Marking
(4/5)
Samples
TL3842BD ACTIVE SOIC D 14 50 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 TL3842B
TL3842BD-8 ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 3842B
TL3842BDR ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 TL3842B
TL3842BDR-8 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 3842B
TL3842BP ACTIVE PDIP P 8 50 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 TL3842BP
TL3843BD ACTIVE SOIC D 14 50 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 TL3843B
TL3843BD-8 ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 3843B
TL3843BDR ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 TL3843B
TL3843BDR-8 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 3843B
TL3843BDRG4 ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 TL3843B
TL3843BP ACTIVE PDIP P 8 50 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 TL3843BP
TL3844BD-8 ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 3844B
TL3844BDR ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 TL3844B
TL3844BDR-8 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 3844B
TL3844BP ACTIVE PDIP P 8 50 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 TL3844BP
TL3845BD ACTIVE SOIC D 14 50 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 TL3845B
TL3845BD-8 ACTIVE SOIC D 8 75 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 3845B
TL3845BDR ACTIVE SOIC D 14 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 TL3845B
TL3845BDR-8 ACTIVE SOIC D 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM 0 to 70 3845B
TL3845BP ACTIVE PDIP P 8 50 RoHS & Green NIPDAU N / A for Pkg Type 0 to 70 TL3845BP
(1) The marketing status values are defined as follows:
I TEXAS INSTRUMENTS
PACKAGE OPTION ADDENDUM
www.ti.com 10-Dec-2020
Addendum-Page 3
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may
reference these types of products as "Pb-Free".
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based
flame retardants must also meet the <=1000ppm threshold requirement.
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6) Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two
lines if the finish value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
OTHER QUALIFIED VERSIONS OF TL2843B :
Automotive: TL2843B-Q1
NOTE: Qualified Version Definitions:
Automotive - Q100 devices qualified for high-reliability automotive applications targeting zero defects
I TEXAS INSTRUMENTS REEL DIMENSIONS TAPE DIMENSIONS ’ I+K0 '«Pt» Reel Dlameter AD Dimension destgned to accommodate the component wmth at) Dimension destgned to accommodate the component Iength K0 Dtmenston destgned to accommodate the component thickness 7 w Ovevau with at the earner tape i Pt PIlCh between successtve cavtty centers f T Reel Width (wt) QUADRANT ASSIGNMENTS FOR PIN 1 ORIENTATION IN TAPE C) O O D C) O D O iSDrockeIHuIes —> User DtreCIIDn OI Feed \I/ Pockel Quadrams
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
TL2842BDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1
TL2842BDR-8 SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
TL2843BDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1
TL2843BDR-8 SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
TL2844BDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1
TL2844BDR-8 SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
TL2845BDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1
TL2845BDR-8 SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
TL3842BDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1
TL3842BDR-8 SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
TL3843BDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1
TL3843BDR-8 SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
TL3844BDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1
TL3844BDR-8 SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
TL3845BDR SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1
TL3845BDR-8 SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 30-Dec-2020
Pack Materials-Page 1
I TEXAS INSTRUMENTS TAPE AND REEL BOX DIMENSIONS
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
TL2842BDR SOIC D 14 2500 853.0 449.0 35.0
TL2842BDR-8 SOIC D 8 2500 340.5 338.1 20.6
TL2843BDR SOIC D 14 2500 853.0 449.0 35.0
TL2843BDR-8 SOIC D 8 2500 340.5 338.1 20.6
TL2844BDR SOIC D 14 2500 853.0 449.0 35.0
TL2844BDR-8 SOIC D 8 2500 340.5 338.1 20.6
TL2845BDR SOIC D 14 2500 853.0 449.0 35.0
TL2845BDR-8 SOIC D 8 2500 340.5 338.1 20.6
TL3842BDR SOIC D 14 2500 853.0 449.0 35.0
TL3842BDR-8 SOIC D 8 2500 340.5 338.1 20.6
TL3843BDR SOIC D 14 2500 853.0 449.0 35.0
TL3843BDR-8 SOIC D 8 2500 340.5 338.1 20.6
TL3844BDR SOIC D 14 2500 853.0 449.0 35.0
TL3844BDR-8 SOIC D 8 2500 340.5 338.1 20.6
TL3845BDR SOIC D 14 2500 853.0 449.0 35.0
TL3845BDR-8 SOIC D 8 2500 340.5 338.1 20.6
PACKAGE MATERIALS INFORMATION
www.ti.com 30-Dec-2020
Pack Materials-Page 2
MECHANICAL DATA D U1 4)} 0 (3'4) DLASHC SMALL 0U ¥N¥ 4040047 5/M 06/1‘ NO'ES, A AH Hnec' dimensmrs c'e m 'mc'ves ['nflhmeter5> B Th5 drawer ‘5 subje», ,0 change mm: Home, A Body \cngth docs rm mac mod Hoar, p'omswons, (xv gmc bms Mom mm warmers, or gm buns sha‘ nm exceed 3005 (015) eam swce @ Body mm does 101 meme 11mm fish. E Rdererce JEDEC MS 012 mam AB, nter‘ec: flash sfu‘ not exceed 0017 (043) each swde {If TEXAS INSTRUMENTS www.1i.com
LAND PATTERN DATA D (R7PDSOmGl4) PLASTlC SMALL OUTLINE Example Board Layout Sterlazlogpeulyngs (Mole c) —— <—14x0,55 -hhheb&&t="" tmedddifi§n%="" 5.40="" 5,40="" @eeeeeej="" rfihfl§eflhj="" —=""> ——l 2x1,27 Example Non Soldermask Delined Pad Example Pad Geometry (See Note c) F Example l / Solder Mask Opening 7 0 07 f (See Note E) All Armlnd ,/ tzllmss/E oa/lz NOTES: A. All linear dimensions are in millimeters. a, Tnis drawan is subject to cnonae wl'lhuul notice. c. Publlcutl’on chs7351 is recommended tor alternate desl’gns. D. Laser ctming apertures w‘lth trapezoidal walls and also roundlng comers wlll otter better paste release. Customers should contact their board assembly site for stencil design recommendations, Reter tc ch—7525 lor otner stencil recommendations. E. Customers snoola contact their ooard looricotion site lor solder musk tolerances between ond oroond signol oods. {I} Tums INSTRUMENTS www.li.com
‘J
www.ti.com
PACKAGE OUTLINE
C
.228-.244 TYP
[5.80-6.19]
.069 MAX
[1.75]
6X .050
[1.27]
8X .012-.020
[0.31-0.51]
2X
.150
[3.81]
.005-.010 TYP
[0.13-0.25]
0 - 8 .004-.010
[0.11-0.25]
.010
[0.25]
.016-.050
[0.41-1.27]
4X (0 -15 )
A
.189-.197
[4.81-5.00]
NOTE 3
B .150-.157
[3.81-3.98]
NOTE 4
4X (0 -15 )
(.041)
[1.04]
SOIC - 1.75 mm max heightD0008A
SMALL OUTLINE INTEGRATED CIRCUIT
4214825/C 02/2019
NOTES:
1. Linear dimensions are in inches [millimeters]. Dimensions in parenthesis are for reference only. Controlling dimensions are in inches.
Dimensioning and tolerancing per ASME Y14.5M.
2. This drawing is subject to change without notice.
3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not
exceed .006 [0.15] per side.
4. This dimension does not include interlead flash.
5. Reference JEDEC registration MS-012, variation AA.
18
.010 [0.25] C A B
5
4
PIN 1 ID AREA
SEATING PLANE
.004 [0.1] C
SEE DETAIL A
DETAIL A
TYPICAL
SCALE 2.800
Yl“‘+
www.ti.com
EXAMPLE BOARD LAYOUT
.0028 MAX
[0.07]
ALL AROUND
.0028 MIN
[0.07]
ALL AROUND
(.213)
[5.4]
6X (.050 )
[1.27]
8X (.061 )
[1.55]
8X (.024)
[0.6]
(R.002 ) TYP
[0.05]
SOIC - 1.75 mm max heightD0008A
SMALL OUTLINE INTEGRATED CIRCUIT
4214825/C 02/2019
NOTES: (continued)
6. Publication IPC-7351 may have alternate designs.
7. Solder mask tolerances between and around signal pads can vary based on board fabrication site.
METAL SOLDER MASK
OPENING
NON SOLDER MASK
DEFINED
SOLDER MASK DETAILS
EXPOSED
METAL
OPENING
SOLDER MASK METAL UNDER
SOLDER MASK
SOLDER MASK
DEFINED
EXPOSED
METAL
LAND PATTERN EXAMPLE
EXPOSED METAL SHOWN
SCALE:8X
SYMM
1
45
8
SEE
DETAILS
SYMM
www.ti.com
EXAMPLE STENCIL DESIGN
8X (.061 )
[1.55]
8X (.024)
[0.6]
6X (.050 )
[1.27] (.213)
[5.4]
(R.002 ) TYP
[0.05]
SOIC - 1.75 mm max heightD0008A
SMALL OUTLINE INTEGRATED CIRCUIT
4214825/C 02/2019
NOTES: (continued)
8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate
design recommendations.
9. Board assembly site may have different recommendations for stencil design.
SOLDER PASTE EXAMPLE
BASED ON .005 INCH [0.125 MM] THICK STENCIL
SCALE:8X
SYMM
SYMM
1
45
8
MECHANICAL DATA P (RiPMPi’E) "LAST‘C >4 >4 7 A V A A M Hnear dw‘ensmns are m inches (miH'nem's) B TH: druwmq is s bje“ :0 change thruut nonce C mus wmhm Juli"; Msiom vanmm BA NUTS DKMLiwi, N¥ PAL’KAC: 4 r ( “ V ‘ 7 v m 31H A H ‘ ‘ M H ‘—’ H w: H J; W“ D u‘ L , ,_ , 40mm: 04/2010 INSI'RUMENTS www.mzam
IMPORTANT NOTICE AND DISCLAIMER
TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE
DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS”
AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY
IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD
PARTY INTELLECTUAL PROPERTY RIGHTS.
These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate
TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable
standards, and any other safety, security, or other requirements. These resources are subject to change without notice. TI grants you
permission to use these resources only for development of an application that uses the TI products described in the resource. Other
reproduction and display of these resources is prohibited. No license is granted to any other TI intellectual property right or to any third
party intellectual property right. TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims,
damages, costs, losses, and liabilities arising out of your use of these resources.
TI’s products are provided subject to TI’s Terms of Sale (www.ti.com/legal/termsofsale.html) or other applicable terms available either on
ti.com or provided in conjunction with such TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable
warranties or warranty disclaimers for TI products.
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265
Copyright © 2020, Texas Instruments Incorporated

Products related to this Datasheet

IC REG CTRLR MULT TOPOLOGY 8SOIC
Available Quantity: 2,500
Unit Price: 0.28
IC REG CTRLR BST FLYBK PWM 8-DIP
Available Quantity: 2,055
Unit Price: 0.95
IC REG CTRLR BST FLYBK PWM 8-DIP
Available Quantity: 884
Unit Price: 0.95
IC REG CTRLR MULT TOPOLOGY 8DIP
Available Quantity: 766
Unit Price: 0.95
IC REG CTRLR BST FLYBK PWM 8SOIC
Available Quantity: 745
Unit Price: 1.26
IC REG CTRLR BST FLYBK PWM 8SOIC
Available Quantity: 696
Unit Price: 1.26
IC REG CTRLR BST FLYBK PWM 8SOIC
Available Quantity: 646
Unit Price: 1.34
IC REG CTRLR BST FLYBK CM 14SOIC
Available Quantity: 635
Unit Price: 1.34
IC REG CTRLR MULT TOPOLOGY 8SOIC
Available Quantity: 90
Unit Price: 1.26
IC REG CTRLR BST FLYBK CM 14SOIC
Available Quantity: 0
Unit Price: 0.83
IC REG CTRLR BST FLYBK PWM 8SOIC
Available Quantity: 0
Unit Price: 0
IC REG CTRLR MULT TOP 14SOIC
Available Quantity: 0
Unit Price: 0
IC REG CTRLR MULT TOPOLOGY 8SOIC
Available Quantity: 0
Unit Price: 0.64
IC REG CTRLR BST FLYBK CM 14SOIC
Available Quantity: 0
Unit Price: 0
IC REG CTRLR BST FLYBK PWM 8SOIC
Available Quantity: 0
Unit Price: 0
IC REG CTRLR MULT TOP 14SOIC
Available Quantity: 0
Unit Price: 0
IC REG CTRLR MULT TOPOLOGY 8SOIC
Available Quantity: 0
Unit Price: 0.64
IC REG CTRLR BST FLYBK CM 14SOIC
Available Quantity: 0
Unit Price: 0.72504
IC REG CTRLR BST FLYBK CM 14SOIC
Available Quantity: 0
Unit Price: 0.36575
IC REG CTRLR BST FLYBK PWM 8SOIC
Available Quantity: 0
Unit Price: 0.28
IC REG CTRLR MULT TOP 14SOIC
Available Quantity: 0
Unit Price: 0.36575
IC REG CTRLR MULT TOP 14SOIC
Available Quantity: 0
Unit Price: 0.36575
IC REG CTRLR BST FLYBK CM 14SOIC
Available Quantity: 0
Unit Price: 0
IC REG CTRLR BST FLYBK CM 14SOIC
Available Quantity: 0
Unit Price: 0
IC REG CTRLR BST FLYBK CM 14SOIC
Available Quantity: 0
Unit Price: 0.36575
IC REG CTRLR BST FLYBK PWM 8SOIC
Available Quantity: 0
Unit Price: 0.28
IC REG CTRLR MULT TOP 14SOIC
Available Quantity: 0
Unit Price: 0
IC REG CTRLR MULT TOP 14SOIC
Available Quantity: 0
Unit Price: 0
IC REG CTRLR BST FLYBK CM 14SOIC
Available Quantity: 0
Unit Price: 0
IC REG CTRLR BST FLYBK CM 14SOIC
Available Quantity: 0
Unit Price: 0