IRU431LCL3TR

更新时间： 2024-11-21 13:01:35

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英飞凌 - INFINEON		稳压器电源电路参考电压源光电二极管输出元件
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IRU431LCL3TR 数据手册

Data Sheet No. PD94118

IRU431L / IRU431AL

LOW -VOLTAGE ADJUSTABLE PRECISION

SHUNT REGULATOR

FEATURES

DESCRIPTION

The IRU431L family are three-terminal adjustable shunt

regulators that can also be used as precision voltage

SOT-23 Packages

Voltage Reference Initial Accuracy

(1% for IRU431L and 0.5% for IRU431AL)

Low Operating Cathode Current

(80µA max)

Unconditionally Stable with only 1µF

Adjustable Output from 1.24V to 15V

0.25Ω Typical Output Impedance

Pin to Pin Compatible with TLV431

references. Its output voltage may be set to any value

between VREF(1.24V) and 15V with two external resis-

tors as shown in the typical application circuit. Other

applications of this device include being used as a

merged amplifier and reference in applications such as

a linear regulator or as the secondary side controller in

low voltage power supply applications. The IRU431L only

requires 80µA maximum quiescent current before regu-

lating, making it ideal as a voltage reference for battery

type applications. The IRU431L has ±1% initial accu-

racy while IRU431AL provides ±0.5% initial accuracy.

APPLICATIONS

Precision Voltage Reference

Linear Regulator Controller

Secondary Side Controller for the low voltage

power supply applications

TYPICAL APPLICATION

VIN

VOUT

IRU431L

Vo = VREF ×o 1 +

Figure 1 - Typical application of the IRU431L as a shunt regulator / voltage reference.

PACKAGE ORDER INFORMATION

TA (°C)

0 To 70

5-PIN SOT-23 (L5)

IRU431LCL5

IRU431ALCL5

3-PIN SOT-23 (L3)

IRU431LCL3

IRU431ALCL3

Rev. 1.8

02/20/02

www.irf.com

12 3 4 5 6

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