MIC2205 Datasheet, PDF (9/16 Pages) Micrel Semiconductor – 2MHz PWM Synchronous Buck Regulator with LDO Standby Mode

Micrel, Inc.
Functional Diagram
VIN
AVIN
6
BIAS
EN
LOWQ
Enable and
Control Logic
SGND
P-Channel
Current Limit
PWM
Control
HSD
Anti-Shoot
Through
LSD
N-Channel
Current Limit
Bias,
UVLO,
Thermal
Shutdown
LDO Block
LDO
Current
Limit
Soft
Start
EA
1.0V
EA
1.0V
SW
R1
FB
R2
LDO
PGND
MIC2205 Block Diagram
MIC2205
V_OUT
C_OUT
April 2005
9
M9999-041105
www.micrel.com