V-Infinity, LLC, 20050 SW 112th Ave., Tualatin, OR 97062

www.v-infinity.com

1-866-372-1258

Rev. 12-2006

3/ 3

VRB3-DIP Series Dc-Dc Converter

Typical Characteristics

Operating Temp.(

)

C

Temperature Derating Graph

23

9 1011

2322

16 1514

2,3

9,10,11,15

14

16

22

23

GND

NC

+Vo

0V

Vin

Vin

Pin

Bottom View

23

9 10 11

23 22

1615 14

2 x 2.54

31.80

15.24

2.54

22.86

(Bottom View)

(Side View)

20.30

9.45

0.50

4.00

MP:10.5

Note: All Pins on a 2.54mm pitch; All Pin diameters are 0.50 mm(Tolerance:±0.10);

All dimensions in mm.

DC

DC

Vin

GND

Vout

0V

Cin

Input Voltage (V)

Input Voltage

Range

Ip

Outline Dimensions &

Recommended Footprint Details

Application Note

Recommended circuit

All the VRB3-DIP Series have been tested according to the following rec-

ommended testing circuit before leaving factory. This series should be

tested under load. Never be tested under no load (See Figure 1 & 2). If

you want to further decrease the input/output ripple, you can increase

capacitance properly or choose capacitors with low ESR. However, the

capacitance should not be too high.(See table 1).If you want to use the

products in high EMI, please choose our metal packaged products.

Input Current

When it is used in unregulated power supply., be sure that the fluctuating

range of the power supply and the rippled voltage do not exceed

the module standard. Input current of power supply should afford the start-

up current of this kind of DC/DC module. (See figure 2)

Pin Connections

External Capacitor

Although this series of DC/DC converter can

work without external capacitor, in order to

keep an optimum performance, however, it

needs external capacitor. (See Table 1)

Requirement on Output Load

To ensure this module operate efficiently and

reliably, a minimum load is specified for this

kind of DC/DC converter in addition to a

maximum load (namely full load). During

operation, make sure the specified range of

input voltage is not exceeded, the minimum

out put load is not less than 10% Of the full

load, and that this product should never

be operated under no load!!! If the actual

load is less below the specified minimum load.

the output ripple of this type of DC/DC con-

verter will increase drastically and at the same

time efficiency & reliability of the circuit will

decrease deeply .If the actual output power

from the load in your circuit is very small.

please connect a resistor with proper

resistance at the output end to in parallel to

increase the load, or use our company’s other

products with a lower rated output power.

The products cannot be used in parallel.

Table 1

Vin

(0+70°C)

(-40+85°C)

5V

&

12V

100uF

24V

&

48V

10uF

100uF

(electrolytic

capacitor)

47uF

(tantalum

capacitor)