Datasheet > LM4431

LM4431

更新时间： 2024-11-22 22:51:51

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
8页	133K
描述
Micropower Shunt Voltage Reference

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数据手册

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LM4431 数据手册

July 1998

LM4431

Micropower Shunt Voltage Reference

n Tolerates capacitive loads

n Fixed reverse breakdown voltage of 2.50V

General Description

Ideal for space critical applications, the LM4431 voltage ref-

erence is available in the sub-miniature (3 mm x 1.3 mm)

SOT-23 surface-mount package. The LM4431’s advanced

design eliminates the need for an external stabilizing capaci-

tor while ensuring stability with any capacitive load, thus

making the LM4431 easy to use. The operating current

range is 100 µA to 15 mA.

Key Specifications

n Output voltage tolerance 25˚C: 2.0% (max)

n Low output noise (10 Hz to 10 kHz): 35 µV_rms(typ)

n Wide operating current range: 100 µA to 15 mA

n Commercial temperature range: 0˚C to +70˚C

n Low temperature coefficient: 30 ppm/˚C (typ)

The LM4431 utilizes fuse and zener-zap reverse breakdown

voltage trim during wafer sort to ensure that the parts have

an accuracy of better than 2.0% at 25˚C. Bandgap refer-

Applications

n Portable, Battery-Powered Equipment

n Data Acquisition Systems

n Instrumentation

ence temperature drift curvature correction and low dynamic

impedance ensure stable reverse breakdown voltage accu-

racy over a wide range of operating temperatures and cur-

rents.

n Process Control

n Energy Management

n Product Testing

n Power Supplies

Features

n Small package: SOT-23

n No output capacitor required

Connection Diagram

SOT-23

DS011374-1

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

Top View

Order Number LM4431M3-2.5

See NS Package Number M03B

(JEDEC Registration TO-236AB)

SOT-23 Package Marking Information

Only three fields of marking are possible on the SOT-23’s small surface. The following table gives the meaning of the three

fields.

Part Marking

Field Definition

S2E

First Field:

Reference

Second Field:

2.500V Voltage Option

Third Field:

Initial Reverse Breakdown Voltage Tolerance of 2.0%

DS011374

www.national.com

12 3 4 5 6 7 8

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