March 2006

Revision 1

1/8

8

TS4436

Adjustable 0.6V Open Collector Shunt Voltage Reference

75mV max. between SINK and GND

µA

Description

The TS4436 is a four-terminal device dedicated to

low voltage Switch Mode Power Supplies

(SMPS).

It integrates a 0.6V voltage reference, an

amplifier, and an open collector output transistor

in a single package. The TS4436’s operating

mode is similar to the well-known standard

voltage reference, the TL431. It maintains the

desired feedback voltage at the REF pin in a

closed loop configuration by sinking a current

proportional to the error voltage at the REF pin.

TS4436 features an open collector transistor with

an ultra-low saturation voltage. This feature allows

it to be used in series with the optocoupler in an

SMPS for regulation up to a 1.8V output voltage.

Applications

Order Codes

SC70

(Plastic Micropackage)

Pin connections (top view)

1

2

34

5

PGND

GND

REF

V

SINK

CC

1

2

34

5

PGND

GND

REF

V

SINK

CC

Part Number

Accuracy

Temperature Range

Package

Packing

Marking

TS4436AICT

0.5%

-40, +85°C

SC70

Tape & Reel

L22

TS4436ICT

1%

L21

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