Datasheet > AN431

AN431

更新时间： 2024-09-24 14:54:35

品牌	Logo	应用领域
美台 - DIODES		/
页数	文件大小	规格书
13页	355K
描述
2.5 ADJUSTABLE SHUNT REGULATOR in SOT23

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中文翻译

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数据手册

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AN431 数据手册

A Product Line of

Diodes Incorporated

AN431

ADJUSTABLE PRECISION SHUNT REGULATORS

Description

Pin Assignments

The AN431 series ICs are three-terminal adjustable shunt regulators

with guaranteed thermal stability over a full operation range. These

ICs feature sharp turn-on characteristics, low temperature coefficient

and low output impedance, which make them ideal substitutes for

Zener diodes in applications such as switching power supply, charger

and other adjustable regulators.

(Top View)

ANODE

The output voltage of these ICs can be set to any value between V_REF

(2.5V) and the maximum cathode voltage (36V).

The AN431 precision reference is offered in two voltage tolerance:

0.5% and 1.0%.

These ICs are available in SOT-23 package.

CATHODE

REF

Features

SOT-23



Programmable Precise Output Voltage from 2.5V to 36V

High Stability under Capacitive Load

Low Temperature Deviation: 4.5mV Typical

Low Equivalent Full-range Temperature Coefficient with

20PPM/^oC Typical

Applications



Charger

Voltage Adapter

Switching Power Supply

Graphic Card

Precision Voltage Reference



Low Dynamic Output Resistance: 0.15Ω Typical

Sink Current Capacity from 1mA to 100mA

Low Output Noise

Wide Operating Range of -40 to +125^oC

Lead-Free Packages: SOT-23

Totally Lead-Free; RoHS Compliant (Notes 1 & 2)



Lead-Free Packages, Available in “Green” Molding Compound:

SOT-23

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

Typical Applications Circuit

V_OUT

V_IN

V_OUT=(1+R1/R2)*V_REF

V_REF

AN431

Shunt Regulator

1 of 13

www.diodes.com

April 2015

AN431

Document number: DS37414 Rev. 3 - 2

12 3 4 5 6 7...13

中文翻译

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