Revision A

1/11

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Over voltage protection for 3.3V 5V and

12V without external components

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Under voltage protection for 3.3V 5V and

12V without external components

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Over voltage protection for -12V or -5V with

external components

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Externally adjustable under voltage

blanking during power up

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Power good input/output

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Externally adjustable pg delay

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Fault output

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Remote output

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Externally adjustable remote delay

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Precision voltage reference

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2kV ESD protection

DESCRIPTION

The TSM1121 integrated circuit incorporates all

sensing circuitry to regulate and protect from over

voltage and under voltage a multiple output power

supply (3.3V, 5V and 12V).

TSM1121 incorporates all the necessary functions

for Housekeeping features which allow safe

operation in all conditions, and very high system

integration.

TSM1121 integrates a precise voltage reference.

APPLICATION

s

PC SMPS triple power line housekeeping ic

(3.3V 5V 12V)

ORDER CODE

Note: N = Dual in Line Package (DIP)

D = Small Outline Package (SO) - also available in Tape &

Reel (DT)

PIN CONNECTIONS (top view)

Part

Number

Temperatur

e Range

Package

Marking

ND

TSM1121CN

0 to 85°C

•

TSM1121C

TSM1121CD

0 to 85°C

•

M1121

N

DIP14

(Plastic Package)

D

SO14

(Plastic Micropackage)

VCC

REM

TREM

TPG

PG

VS33

VS5

VS12

PI

TUV

EP

GND

VREF

10

9

8

7

6

5

4

3

2

1

11

12

13

14

FAULT

TSM1121

3.3V 5V 12V HOUSEKEEPING IC

May 2003