GS-R51212

20W TRIPLE OUTPUT STEP-DOWN

SWITCHING REGULATOR

June 1994

1/5

FEATURES

MTBF in excess of 200,000 hours

4V max drop-out voltage

Soft start

Reset output

Non-latching short circuit protection

Crow-bar output overvoltage protection

DESCRIPTION

The GS-R51212 is a versatile triple output, high

current, high voltage step-down switching regulator

module that provides a +5V and two isolated 12V

outputs. It is ideal for microprocessor based boards

because it powers the logic and the communication

ports and it has a Reset output for the correct

system start-up.

The integral heatsink allows a large power handling

capability and it provides also an effective shielding

to minimize EMI.

MAIN CHARACTERISTICS

Vi

Input Voltage

9 to 40V

Vo1

Io1

Output Voltage

Output Current

5.1V

3.5A

Vo2

Io2

Output Voltage

Output Current

12V

0.1A

Vo3

Io3

Output Voltage

Output Current

12V

0.1A

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

Vi

DC Input Voltage

42

V

Irt

Reset Output Sink Current

20

mA

Tstg

Storage Temperature Range

– 40 to +105

°C

Tcop

Operating Case Temperature Range

– 20 to +85

°C