TSM101/A

VOLTAGE AND CURRENT CONTROLLER

June 1999

1

2

3

4

8

5

6

7

Vref

PIN CONNECTIONS

®

.

1.24V SERIES VOLTAGE REFERENCE WITH

10mA OUTPUT CURRENT AND 1% PRECI-

SION (TSM101A)

.

TWO

OPERATIONAL AMPLIFIERS WITH

ORED OUTPUT AND 1MHZ GAIN BAND-

WIDTH PRODUCT

.

BUILT-IN CURRENT GENERATOR WITH EN-

ABLE/DISABLE FUNCTION

.

4.5 TO 32V SUPPLY VOLTAGE RANGE

.

SO8, DIP8 AND TSSOP8 PACKAGES

DESCRIPTION

The TSM101/TSM101Aintegrated circuit incorpo-

rates a high stability series band gap voltage refer-

ence, two ORed operational amplifiers and a

current source.

This IC compares the DC voltage and the current

level at the output of a switching power supply to

an internal reference. It provides a feedback

through an optocoupler to the PWM controller IC in

the primary side.

The controlled current generator can be used to

modify the level of current limitation by offsetting

the information coming from the current sensing

resistor.

APPLICATIONS

This circuit is designed to be used in battery charg-

ers with a constant voltage and a limited output

current.

It can be used in every types of applicationrequiring

a precision voltage regulation and current limita-

tion.

Other applications include voltage supervisors,

over voltage protection...

ORDER CODES

Part Number

Temperature

Range

Package

NDP

TSM101C/AC

-20, +80

•••

TSM101I/AI

-40, +105

•••

N

DIP8

(Plastic Package)

D

SO8

(Plastic Micropackage)

P

TSSOP8

(Thin Shrink Small Outline Package)

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