August 2007

Rev 6

1/12

12

TS431

Low voltage adjustable shunt reference

Features

30mA

Ω

– Human body model: 2kV

– Machine model: 200V

Description

The TS431 is a low-voltage, three-terminal,

programmable shunt voltage reference.

The output voltage can be set to any value

resistors.

The TS431 is able to operate at a lower voltage

(1.24V) and lower cathode current than the widely

used TL431 and TL1431 shunt voltage reference.

When driving an optocoupler, the TS431 is

particularly useful for regulating 3.3V switching

power supplies.

L

SOT23-5

(Plastic micropackage)

Z

TO92

(Plastic package)

www.st.com