MIC4721 Datasheet, PDF (7/19 Pages) Micrel Semiconductor – 1.5A 2MHz Integrated Switch Buck Regulator

Micrel, Inc.
Functional Diagram
VIN
VIN
BIAS
MIC4721
P-Channel
Current Limit
HSD
SW
PWM
Control
SW
EN
Enable and
Control Logic
Bias,
UVLO,
Thermal
Shutdown
Soft
Start
EA
FB
1.0V
SGND
MIC4721 Block Diagram
1.0V
PGOOD
PGND
May 2007
7
M9999-052907-A