Datasheet > MIC4043

MIC4043

更新时间： 2024-10-01 14:55:19

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
22页	2062K
描述
The MIC4043 is a shunt regulator optimized for secondary-side regulation in low-voltage power supp

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MIC4043 数据手册

MIC4043

Low-Voltage, Secondary-Side Shunt Regulator

Features

General Description

• Ideal for 1.8V Switching Converters

• Low-Voltage Operation:

The MIC4043 is a shunt regulator optimized for

secondary-side regulation in low-voltage power

supplies. Featuring an output stage guaranteed to

swing within 400 mV of ground, the MIC4043 can be

used in power supplies operating down to 1.8V, even

with opto-isolators requiring greater than 1.2V of

headroom.

- 400 mV Maximum Saturation Over Operating

Temperature Range

• Easy to Use

- Voltage In, Current Out

• 2% Voltage Tolerance Over Operating

Temperature Range

In power supply applications, the MIC4043 normally

drives the LED of an optically isolated feedback circuit.

The MIC4043 monitors a resistively divided output

voltage and sinks error current through the

Applications

• Optically Isolated, Low-Voltage Power Supplies

opto-isolator’s

LED

(secondary

side);

the

• Low-Voltage Discrete Regulator Control

opto-isolator’s transistor (primary side) provides this

signal to the controller’s feedback input. The MIC4043

is also practical for other voltage-monitoring

applications requiring an open-collector output.

Package Type

The MIC4043 replaces conventional ‘431-type shunt

regulators to allow low-voltage applications where

there is inadequate headroom for a 2.5V regulator in

series with an opto-isolator. Replacing ‘431-type

devices requires only a minor change to the way that

the resistive-divider values are calculated.

MIC4043

4-Pin SOT-143 (M4)

GND

RB1D

SNK

 2020 Microchip Technology Inc.

DS20006299A-page 1

12 3 4 5 6 7...22

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与MIC4043相关器件

型号	品牌	获取价格	描述	数据表
MIC4043_02	MIC	获取价格	Low-Voltage Secondary-Side Shunt Regulator
MIC4043_11	MIC	获取价格	Low-Voltage Secondary-Side Shunt Regulator Final Information
MIC4043BM4	MIC	获取价格	Low-Voltage Secondary-Side Shunt Regulator Final Information
MIC4043BM4	MICREL	获取价格	Low-Voltage Secondary-Side Shunt Regulator
MIC4043BM4	MICROCHIP	获取价格	Three Terminal Voltage Reference, 1 Output, 1.245V, PDSO4, SOT-143, 4 PIN
MIC4043BM4TR	MICROCHIP	获取价格	Three Terminal Voltage Reference, 1 Output, 1.245V, PDSO4, SOT-143, 4 PIN
MIC4043YM4	MIC	获取价格	Low-Voltage Secondary-Side Shunt Regulator Final Information
MIC4043YM4TR	MICROCHIP	获取价格	1-OUTPUT THREE TERM VOLTAGE REFERENCE, 1.245V, PDSO4, LEAD FREE, SOT-143, 4 PIN
MIC4043YM4-TR	MICROCHIP	获取价格	1-OUTPUT THREE TERM VOLTAGE REFERENCE, 1.245V, PDSO4
MIC4100	MIC	获取价格	100V Half Bridge MOSFET Drivers