Micrel, Inc.

MIC4575

July 2009

2

M9999-072909

Ordering Information

Part Number

Standard

RoHS Compliant*

Voltage

Temperature Range

Package

MIC4575-3.3BT

MIC4575-3.3WT

3.3V

–40° to +85°C

5-Pin TO-220

MIC4575-5.0BT

MIC4575-5.0WT

5.0V

–40° to +85°C

5-Pin TO-220

MIC4575BT

MIC4575WT

Adj.

–40° to +85°C

5-Pin TO-220

MIC4575-3.3BU

MIC4575-3.3WU

3.3V

–40° to +85°C

5-Pin TO-263

MIC4575-5.0BU

MIC4575-5.0WU

5.0V

–40° to +85°C

5-Pin TO-263

MIC4575BU

MIC4575WU

Adj.

–40° to +85°C

5-Pin TO-263

* RoHS compliant with ‘high-melting solder’ exemption.

Pin Configuration

5 SHDN

4FB

3 GND

2SW

1 VIN

5-Pin TO-220 (T)

5-Pin TO-263 (U)

Pin Description

Pin Number

Pin Name

Pin Function

1

IN

Supply Voltage (Input): Unregulated +4V to +40V supply voltage.

2

SW

Switch (Output): Emitter of NPN output switch. Connect to external storage

inductor and Shottky diode.

3, TAB

GND

Ground.

4

FB

Feedback (Input): Output voltage feedback to regulator. Connect to output of

supply for fixed versions. Connect to 1.23V tap of resistive divider for adjustable

versions.

5

SHDN

Shutdown (Input): Logic low enables regulator. Logic high (> 2.4V) shuts down

regulator.