LM433

Dual Op Amp with On-Chip Fixed 2.5V Reference

General Description

The LM433 integrates two operational amplifiers and one

2.5V reference. The reference is based on the LMV431

adjustable shunt regulator with the output voltage adjusted

to a fixed 2.5V. The Op Amps are similar to the LM358 with

a common-mode input range that includes ground. Integrat-

ing the reference and Op Amps creates a solution for low

cost charging applications.

Applications

n

Low cost charging circuitry

n

Power supplies and adapters

Features

Dual Op Amp Circuitry

(Typical for V

n

Input offset voltage

0.6mV

n

Input offset current

1nA

n

Input bias current

3nA

n

Common-mode input voltage range

0V to V

n

Power supply current

150µA

Reference Circuitry

n

Reference voltage

2.5V

n

Reference voltage deviation (−40˚C to 85˚C)

4mV

n

Sink Current Capability

0.2mA to 10mA

Connection Diagram

8-Pin SOIC

20003901

Top View

Application Circuit

20003902

Optocoupler Driver Circuit for Power Supply Isolation

Ordering Information

Package

Part Number

Package Marking

Transport Media

NSC

Drawing

8-Pin SOIC

LM433MA

LM433MA

Rails

M08A

LM433MAX

LM433MA

2.5k Unit Tape and Reel

July 2001

© 2004 National Semiconductor Corporation

DS200039

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