cui.com

date 08/31/2021

│ page 4 of 6

CUI Inc

│ SERIES: VCD40 │ DESCRIPTION: DC-DC CONVERTER

MECHANICAL DRAWING

MECHANICAL

parameter

conditions/description

min

typ

max

units

dimensions

2 x 2 x 0.4 (50.8 x 50.8 x 10.2 mm)

inch

case material

black coated copper with non-conductive base

weight

65

g

PIN CONNECTIONS

SINGLE OUTPUT DUAL OUTPUT DUALPOSITIVE TRIPLEOUTPUT

PIN

FUNCTION

FUNCTION

FUNCTION

FUNCTION

1

+Vin

+Vin

+Vin

+Vin

2

-Vin

-Vin

-Vin

-Vin

3

on/off

on/off

on/off

on/off

4

NC

no pin

+3.3Vo

+Aux. out

5

-sense

+Vo

com(5V RTN)

common

6

+sense

common

trim

-Aux. out

7

+Vo

common

NC

+Vo

8

-Vo

-Vo

+5 Vo

-Vo (common)

9

trim

trim

com(5V RTN)

NC

units: inches (mm)

tolerance: x.xx = ±0.02, x.xxx = ±0.010

(x.x = ±0.5, x.xx = ±0.25)

pin tolerance ±0.05mm

PIN

VOLTAGE

AMPERES

typ

7

+5

0.50

3.5

8,5

±12

0.10

0.31

8,5

±15

0.10

0.25

Notes:

1. Maximum total power from all outputs is

limited to 25 watts but no output should

exceed its maximum current.

2. Minimum current on each output is

required to maintain specified regulation.

REMOTE ON/OFF CONTROL

logic compatibility

CMOS or Open Collector TTL

EC-on

>+5.5 Vdc or Open Circuit

EC-off

<1.8 Vdc

shutdown idle current

10 mA

control common

referenced to input minus

EXTERNAL OUTPUT TRIMMING

Output may optionally be externally trimmed (±10%) with a

fixed resistor or an external trimpot as shown.

Additional Resources: Product Page | 3D Model | PCB Footprint