TSM111CN datasheet(1/18 Pages) STMICROELECTRONICS

Part #	TSM111CN

Description	TRIPLE VOLTAGE AND CURRENT SUPERVISOR

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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TRIPLE VOLTAGE AND CURRENT SUPERVISOR

®

.

OVERVOLTAGE PROTECTION FOR 3.3V, 5V

AND

12V

WITHOUT

EXTERNAL

COMPONENTS

.

OVERCURRENT PROTECTION FOR 3.3V, 5V

AND 12V WITH INTERNAL THRESHOLD

VOLTAGE

.

POWER GOOD CIRCUITRY

.

GENERATES POWER GOOD SIGNAL

.

REMOTE ON/OFF FUNCTION

.

PROGRAMMABLE

TIMING

FOR

POWER

GOOD SIGNAL

.

14.5V TO 36V SUPPLY VOLTAGE RANGE

.

TWO 1.6% VOLTAGE REFERENCES FOR

MAIN

AND

AUXILIARY

CONVERTER

REGULATION LOOPS

DESCRIPTION

The TSM111 integrated circuit incorporates all

sensing circuit to control a triple output power sup-

ply. It includes voltage references , comparatorsand

matched resistors bridge for overcurrent and over-

voltage detection without the need of any external

components.Timing generatorwith external capaci-

tors, control turn On and Off delays. It provides an

integrated and cost effective solution for simultane-

ous multiple voltage control.

APPLICATIONS

This circuit is designedto be used in SMPS forDesk-

top PC, to supervise currents and voltages of all out-

puts and generate power good information to the

system while managing all timing during transitory

operation.

The IC also manages the standby mode of SMPS

while the PC is in sleep mode.

ORDER CODES

Part

Number

Temperature

Range

Package

ND

TSM111C

0, +70

oC

••

Example : TSM111CD

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Vs33

Vs5

Vs12

ADJ

Vcc

PWM

REM

Tre m

PG

Tpor

Is33

Is5

Is12

Ts ur

GND

FbMAIN

VrefMAIN

VrefAUX

FbAUX

UV

PIN CONNECTIONS (top view)

TSM111

May 1999

N

DIP20

(Plastic Package)

D

SO20

(Plastic Micropackage)

1/18

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