MIC4720 Datasheet, PDF (8/21 Pages) Micrel Semiconductor – 3mm x 3mm 2.0MHz 2A Integrated Switch Buck Regulator

Micrel, Inc.
Functional Diagram
VIN
VIN
BIAS
MIC4720
P-Channel
Current Limit
HSD
SW
PWM
Control
SW
EN
Enable and
Control Logic
Bias,
UVLO,
Thermal
Shutdown
Soft
FB
Start
EA
1.0V
SGND
MIC4720 Block Diagram
1.0V
PGOOD
PGND
May 2007
8
M9999-051707