MIC2171 Datasheet, PDF (2/10 Pages) Micrel Semiconductor – 100kHz 2.5A Switching Regulator Preliminary Information

MIC2171
Ordering Information
Part Number
MIC2171BT
MIC2171BU
Temperature Range
–40°C to +85°C
–40°C to +85°C
Package
5-lead TO-220
5-lead TO-263
Micrel
Pin Configuration
Tab GND
5 IN
4 SW
3 GND
2 FB
1 COMP
5-lead TO-220 (BT)
Tab GND
5 IN
4 SW
3 GND
2 FB
1 COMP
5-lead TO-263 (BU)
Pin Description
Pin Number
1
2
3
4
5
Pin Name
COMP
FB
GND
SW
IN
Pin Function
Frequency Compensation: Output of transconductance-type error amplifier.
Primary function is for loop stabilization. Can also be used for output voltage
soft-start and current limit tailoring.
Feedback: Inverting input of error amplifier. Connect to external resistive
divider to set power supply output voltage.
Ground: Connect directly to the input filter capacitor for proper operation
(see applications info).
Power Switch Collector: Collector of NPN switch. Connect to external
inductor or input voltage depending on circuit topology.
Supply Voltage: 3.0V to 40V
4-4
1997