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DS-RS431-03 October, 2007

www.Orister.com

RS431 Series

Adjustable Precision Shunt Regulator

Description

The RS431 series are three-terminal adjustable regulators with

guaranteed thermal stability over applicable temperature ranges. The

volts) and 36 volts with two external resistors. These devices have a

typical dynamic output impedance of 0.2

Ω. Active output circuitry provides

a very sharp turn-on characteristic, making these devices excellent

replacement for zener diodes in many applications.

Features

• Programmable Precise Output Voltage from 2.5V to 36V

• High Stability under Capacitive Load

• Low Temperature Deviation: 4.5mV Typical

• Low Dynamic Output Resistance: 0.2Ω Typical

• Sink Current Capacity from 1mA to 100 mA

• Low Output Noise

Absolute Maximum Ratings

(Operating temperature range applies unless otherwise specified)

Characteristics

Symbol

Value

Unit

Cathode Voltage

40

V

Cathode Current Range (Continuous)

-100~+150

mA

Reference Input Current Range

0.05~+10

mA

SOT-23

370

TO-92

770

--

--

Power Dissipation

--

--

mW

Operating Temperature Range (Max.)

Storage Temperature Range

-65~+150

Operating Conditions

Characteristics

Symbol

Min.

Max.

Unit

Cathode Voltage

36

V

Cathode Current Range (Continuous)

1

100

mA

Operating Ambient Temperature Range

-40

125

RS431 Series Pin Assignment

3-Lead Plastic SOT-23

Package Code: N

Pin 1: Reference

Pin 2: Cathode

Pin 3: Anode

1 2

3

3-Lead Plastic TO-92

Package Code: A

Pin 1: Reference

Pin 2: Anode

Pin 3: Cathode

1 2

3