MIC4681 Micrel Semiconductor, MIC4681 Datasheet - Page 2

• Manufacturer Part Number: MIC4681
• Description: 2A-Peak SuperSwitcher SOP-8 Buck Regulator
• Manufacturer: Micrel Semiconductor

Ordering Information
Pin Configuration
Pin Description
MIC4681
MIC4681
Pin Number
5–8
1
2
3
4
Part Number
MIC4681BM
Pin Name
SHDN
GND
VIN
SW
FB
SHDN
Adjustable
VIN
SW
Voltage
FB
Shutdown (Input): Logic low enables regulator. Logic high (>2V) shuts down
Ground
Pin Function
regulator.
Supply Voltage (Input): Unregulated +4V to +30V supply voltage.
Switch (Output): Emitter of NPN output switch. Connect to external storage
inductor and Shottky diode.
Feedback (Input): Connect to 1.23V-tap of voltage-divider network
1
2
3
4
SOP-8 (M)
Junction Temp. Range
2
–40 C to +125 C
8 GND
7
6
5
GND
GND
GND
8-lead SOP
Package
February 2001
Micrel