MIC4576

Micrel, Inc.

MIC4576

2

March 2006

Ordering Information

Standard

Part Number

RoHS Compliant

Part Number*

Voltage Temperature Range

Package

MIC4576-3.3BT

MIC4576-3.3WT

3.3V

–40ºC to +85ºC

TO-220-5

MIC4576-5.0BT

MIC4576-5.0WT

5.0V

–40ºC to +85ºC

TO-220-5

MIC4576BT

MIC4576WT

ADJ.

–40ºC to +85ºC

TO-220-5

MIC4576-3.3BU

MIC4576-3.3WU

3.3V

–40ºC to +85ºC

TO-263-5

MIC4576-5.0BU

MIC4576-5.0WU

5.0V

–40ºC to +85ºC

TO-263-5

MIC4576BU

MIC4576WU

ADJ.

–40ºC to +85ºC

TO-263-5

* RoHS compliant with "high-melting solder" exemption.

Pin Configuration

5 SHDN

4 FB

3 GND

2 SW

5-Pin TO-220 (T)

5 SHDN

4 FB

3 GND

2 SW

5-Pin TO-263 (U)

Pin Description

Pin Number

Pin Name

Pin Function

1

Supply Voltage (Input): Unregulated +4V to +36V supply voltage.

2

SW

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

inductor and Shottky diode.

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.