Datasheet

© 2007 Microchip Technology Inc. DS22061A-page 3
MCP1602
Functional Block Diagram
ILIM
PWM
ILIM
PFM
IPEAK
PWM
IPEAK
PFM
V
IN
SHDN
V
FB
/V
OUT
P
GND
L
X
Band
Gap
UVLO
Switch Drive
UVLO
V
REF
Logic and Timing
S
RQ
Q
Soft Start
V
REF
PWM/PFM
Logic
V
REF
Slope
Comp
OSC
-I
PK
Limit
Thermal
Shutdown
TSD
EA
POFF NOFF
PWM/PFM
PFM Error Amp
PWM Error Amp
OV Threshold
UV Threshold
I
PK
Limit
-ILPK
IPEAK
PWM
IPEAK
PFM
Disable
Switcher
-ILPK
PG Generator
with Delay
V
REF
V
CC
V
OUT
A
GND
PG
V
CC