MIC4576_98 查看數據表（PDF） - Micrel

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MIC4576_98

200kHz Simple 3A Buck Voltage Regulator

Micrel 

MIC4576

Block Diagrams

Micrel

+36V max.

VIN

CIN

Shutdown

Enable

SHDN

Internal

Regulator

200kHz

Oscillator

Thermal

Shutdown

Current

Limit

Com-

parator

Error

Amp.

MIC4576-x.x

Driver

3A

Switch

SW

L1

D1

1.23V

Bandgap

R1

FB

R2

GND

Block Diagram with External Components

Fixed Step-Down Regulator

VOUT

COUT

+36V max.

VIN

Shutdown

Enable

SHDN

Internal

Regulator

200kHz

Oscillator

Thermal

Shutdown

Current

Limit

Com-

parator

Error

Amp.

MIC4576 [Adjustable]

Driver

1.23V

Bandgap

3A

Switch

GND

CIN

VOUT

R1

VREF R2 + 1

R1 R2 VOUT 1

VREF

SW

L1

D1

VOUT

COUT

R1

FB

R2

Block Diagram with External Components

Adjustable Step-Down Regulator

MIC4576

4-132

April 1998•

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