LM4431

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SNVS103C – JUNE 2000 – REVISED APRIL 2013

LM4431 Micropower Shunt Voltage Reference

Check for Samples: LM4431

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FEATURES

DESCRIPTION

Ideal for space critical applications, the LM4431

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•

Small Package: SOT-23

voltage reference is available in the sub-miniature

•

No Output Capacitor Required

(3 mm x 1.3 mm) SOT-23 surface-mount package.

•

Tolerates Capacitive Loads

The LM4431's advanced design eliminates the need

for an external stabilizing capacitor while ensuring

•

Fixed Reverse Breakdown Voltage of 2.50V

stability with any capacitive load, thus making the

LM4431 easy to use. The operating current range is

APPLICATIONS

100

μA to 15 mA.

•

Portable, Battery-Powered Equipment

The LM4431 utilizes fuse and zener-zap reverse

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Data Acquisition Systems

breakdown voltage trim during wafer sort to ensure

•

Instrumentation

that the parts have an accuracy of better than ±2.0%

at

25°C.

Bandgap

reference

temperature

drift

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Process Control

curvature correction and low dynamic impedance

•

Energy Management

ensure stable reverse breakdown voltage accuracy

•

Product Testing

over a wide range of operating temperatures and

currents.

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Power Supplies

KEY SPECIFICATIONS

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Output Voltage Tolerance: 25°C: ±2.0% (Max)

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Low Output Noise (10 Hz to 10 kHz): 35

(Typ)

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Wide Operating Current Range: 100

μA to 15

mA

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Commercial Temperature Range: 0 to +70 °C

•

Low Temperature Coefficient: 30 ppm/°C (Typ)

Connection Diagram

Top View

* This pin must be left floating or connected to pin 2.

Figure 1. SOT-23 Package

See Package Number DBZ0003A

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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PRODUCTION DATA information is current as of publication date.

Copyright © 2000–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.