MIC4690 Datasheet, PDF (2/12 Pages) Micrel Semiconductor – 500kHz 1A SuperSwitcher Buck Regulator

MIC4690
Ordering Information
Part Number
MIC4690BM
Voltage Junction Temp. Range
Adjustable
–40°C to +125°C
Package
8-lead SOP
Micrel
Pin Configuration
SHDN 1
VIN 2
SW 3
FB 4
8 GND
7 GND
6 GND
5 GND
SOP-8 (M)
Pin Description
Pin Number
1
2
3
4
5-8
Pin Name
SHDN
VIN
SW
FB
GND
Pin Function
Shutdown (Input): Logic low enables regulator. Logic high (>1.5V) shuts
down regulator.
Supply Voltage (Input): Unregulated +4V to +30V continuous supply
voltage, with a maximum +34V transient voltage.
Switch (Output): Emitter of NPN output switch. Connect to external storage
inductor and Schottky diode.
Feedback (Input): Connect to output on fixed output voltage versions, or to
1.23V-tap of voltage-divider network for adjustable version.
Ground
MIC4690
2
June 2001