V78W-500(R) Series Datasheet

CUI Inc.

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Datasheet

cui.com
date 04/21/2015
page 1 of 5
SERIES: V78W-500 DESCRIPTION: NON-ISOLATED SWITCHING REGULATOR
MODEL input
voltage
output
voltage
output
current
output
power
ripple and
noise1
efficiency
level2
range
(Vdc) (Vdc)
min
(mA)
max
(mA)
max
(W)
max
(mVp-p)
typ
(%)
V7803W-500 9 ~ 72 3.3 10 500 1.65 60 82
V7805W-500 9 ~ 72 5 10 500 2.5 60 87
V7806W-500 9 ~ 72 6.5 10 500 3.25 60 91
V7809W-500 14 ~ 72 9 10 500 4.5 60 92
V7812W-500 17 ~ 72 12 10 500 6 60 93
V7815W-500 20 ~ 72 15 10 500 7.5 60 94
V7824W-500336 ~ 72 24 6 300 7.2 60 95
Notes: 1. 20MHz bandwidth, from 10% to 100% load
2. Measured at Vin min and 100% load
3. V7824W-500 output current is 300 mA (max)
date 04/21/2015
page 1 of 5
FEATURES
• up to 500 mA current output
• extremly high efficiency up to 95%
• no heatsink required
• pin comparable to LM78 linear regulators
• available in straight and right angle SIP packages
• up to 8:1 ultra wide input
• low ripple and noise
• short circuit protections
• wide temperature (-40°C ~ 85°C)
RoHS
PART NUMBER KEY
V78 XX W - XXX X
Output VoltageBase Number Output Current blank = standard
R = Right Angle
For more information, please visit the product page.
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date 04/21/2015 page 2 of 5CUI Inc SERIES: V78W-500 DESCRIPTION: DC-DC CONVERTER
INPUT
parameter conditions/description min typ max units
operating input voltage
3, 5, 6.5 V models
9 V model
12 V model
15 V model
24 V model
9
14
17
20
36
48
48
48
48
48
72
72
72
72
72
Vdc
Vdc
Vdc
Vdc
Vdc
OUTPUT
parameter conditions/description min typ max units
line regulation measured from low line to high line ±0.4 ±1.0 %
load regulation measured from 10% to full load ±0.3 ±0.6 %
voltage accuracy at 100% load ±2 ±3 %
switching frequency 100% load 120 800 kHz
temperature coefficient -40°C ~ +85°C ambient ±0.015 %/°C
quiescent current Vin = nominal, min. load 1 5 mA
tendencies load at 10% to 100% load 1.0
±100
1.5
mV
ms
max capacitance load 100 µF
PROTECTIONS
parameter conditions/description min typ max units
short circuit protection continuous, automatic recovery
short circuit input power Vin = nominal 0.72 1.2 W
thermal shutdown 160 °C
current limit Vin = nominal 700 1200 mA
SAFETY AND COMPLIANCE
parameter conditions/description min typ max units
thermal resistance 60 °C/W
EMI/EMC EN55022, class B (refer to page 4), IEC/EN 61000-4-2 level 4
RoHS compliant yes
MTBF 25°C (MIL-HDBK-217K)
71°C (MIL-HDBK-217K)
3,500,000
1,500,000
hours
hours
ENVIRONMENTAL
parameter conditions/description min typ max units
case operating temperature 65 100 °C
operating temperature power derating above 71°C -40 85 °C
storage temperature -55 125 °C
storage humidity non-condensing 95 %
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date 04/21/2015 page 3 of 5CUI Inc SERIES: V78W-500 DESCRIPTION: DC-DC CONVERTER
2.15
0.085
2.15 0.085
5.08 0.200
5.08 0.200
20.0200.50
0.55 0.022
13
9.00 0.354 9.00 0.354
4.10 0.161
213
11.50 0.453
0.020
17.50 0.689
0.50
4.10 0.161
11.50 0.453
1.50 0.059
17.50 0.689
0.50 0.020
MECHANICAL DRAWING
MECHANICAL
parameter conditions/description min typ max units
dimensions 11.5 x 9.0 x 17.5 mm (0.45 x 0.35 x 0.69 inch)
case material Plastic (UL94-V0)
weight 4 g
Units: mm [in]
All pins on a 2.54mm pitch
pin tolerance: ±0.10mm[±0.004in]
general tolerance: ±0.25mm[±0.010in]
general tolerance (right angle): ±0.50mm[±0.020in]
V78W-500 V78W-500R
RECOMMENDED FOOTPRINT
1.10 0.043
(3 PLCS)
5.08 0.200
2.15 0.085 2.54 0.100
2.54 0.100
1.10 0.043
(3 PLCS)
1.35 0.053
5.08 0.200
2.54 0.100
2.54 0.100
1
213
23
PIN CONNECTIONS
1 +Vin
2 GND
3 +Vout
V78W-500 V78W-500R
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date 04/21/2015 page 4 of 5CUI Inc SERIES: V78W-500 DESCRIPTION: DC-DC CONVERTER
TYPICAL APPLICATION CIRCUIT
MODULES PROTECT RECOMMENDED CIRCUIT
APPLICATION EXAMPLE
DERATING CURVE
Operatin
g
Temp.
(
)
C
TemperatureDeratin
g
Graph
1
2
3
+Vin
GND
+Vout
GND
C1
V78W-500(R)
1
2
3
+Vin
GNDGND

F
+5V/850mA
C1
C2
+12V/100m
A
Reverseprotection
V7812W-500(R)
V7805W-500(R)
+Vin +Vout
GN
GND
13
2
+Vin +Vout-
GNDGN
13
2
Schottky Diode
Vout=
0.3V
V78W-500(R)
V78W-500(R)
EMC RECOMMENDED CIRCUIT
+Vin
ND
1.0FF-3.3
0.5mH-2mH
0.68 F-2.2F
Vin+Vout
GND
27
0F-470 F
R
L
0.5mH-2mH
1
2
3
1. The regulator proposed to establish the input voltage by
soft-start, no plug and play, if the input voltage changes from
low voltage to high voltage abruptly, the regulator might be
damaged.
2. If the applications is high-voltage input, the regulator
must add an external capacitor C1(≤47μF/100V) to prevent
voltage spikes caused by damage to the module.
3. No parallel connection.
1. The input current amount of the back-grade regulator and
the pre-class load should be less than or equal the max load
current of the pre-class regulator.
2. If further filtering is required, please add components
as per the above circuit (We recommend not to add
components), if request, please make sure the capacitors C1
≤47μF, C2≤10μF more close to the back-grade regulator.
High voltage input, multiple outputs, with greater load
For more information, please visit the product page.
date 04/21/2015 page 5 of 5CUI Inc SERIES: V78W-500 DESCRIPTION: DC-DC CONVERTER
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical
component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to
affect its safety or effectiveness.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
techsupport@cui.com
rev. description date
1.0 initial release 09/28/2011
1.01 V-Infinity branding removed 09/06/2012
1.02 updated datasheet 04/21/2015
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
For more information, please visit the product page.

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