MIC4575_09 Datasheet, PDF (2/15 Pages) Micrel Semiconductor – 200kHz Simple 1A Buck Regulator

Micrel, Inc.
Ordering Information
Part Number
Standard
RoHS Compliant*
Voltage
MIC4575-3.3BT MIC4575-3.3WT
3.3V
MIC4575-5.0BT MIC4575-5.0WT
5.0V
MIC4575BT
MIC4575WT
Adj.
MIC4575-3.3BU MIC4575-3.3WU
3.3V
MIC4575-5.0BU MIC4575-5.0WU
5.0V
MIC4575BU
MIC4575WU
Adj.
* RoHS compliant with ‘high-melting solder’ exemption.
Temperature Range
–40° to +85°C
–40° to +85°C
–40° to +85°C
–40° to +85°C
–40° to +85°C
–40° to +85°C
MIC4575
Package
5-Pin TO-220
5-Pin TO-220
5-Pin TO-220
5-Pin TO-263
5-Pin TO-263
5-Pin TO-263
Pin Configuration
5-Pin TO-220 (T)
5 SHDN
4 FB
3 GND
2 SW
1 VIN
5-Pin TO-263 (U)
Pin Description
Pin Number
1
2
3, TAB
4
5
Pin Name
IN
SW
GND
FB
SHDN
Pin Function
Supply Voltage (Input): Unregulated +4V to +40V supply voltage.
Switch (Output): Emitter of NPN output switch. Connect to external storage
inductor and Shottky diode.
Ground.
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.
Shutdown (Input): Logic low enables regulator. Logic high (> 2.4V) shuts down
regulator.
July 2009
2
M9999-072909