MIC4682 Datasheet, PDF (2/15 Pages) Micrel Semiconductor – PRECISION CURRENT LIMIT SO-8 SUPERSWITCHER BUCK REGULATOR

MIC4682
Ordering Information
Part Number
MIC4682BM
Voltage Junction Temp. Range
Adjustable
–40°C to +125°C
Package
8-lead SOP
Pin Configuration
FB 1
GND 2
ISET 3
SHDN 4
8 SW
7 GND
6 GND
5 IN
Power SOP-8 (M)
Micrel
Pin Description
Pin Number
1
2, 6, 7
3
4
5
8
Pin Name
FB
GND
ISET
SHDN
IN
SW
Pin Function
Feedback (Input): Output voltage sense node. Connect to 1.23V-tap of the
output voltage-divider network.
Ground (Return): Ground
Current Limit Set (Input): Connect an external resistor to ground to set the
current limit. Do not ground or float this pin.
Shutdown (Input): Logic low (<0.8V) enables regulator. Logic high (>2V)
shuts down regulator.
Supply Voltage (Input): Unregulated +4V to +34V supply voltage.
Switch (Output): Internal power emitter of NPN output switch.
October 2003
2
M0334-102203