MCP1603-120I/OS MICROCHIP [Microchip Technology], MCP1603-120I/OS Datasheet - Page 3

• Manufacturer Part Number: MCP1603-120I/OS
• Description: 2.0 MHz, 500 mA Synchronous Buck Regulator
• Manufacturer: MICROCHIP [Microchip Technology]

Functional Block Diagram
© 2007 Microchip Technology Inc.
V
V
FB
IN
Comp
Slope
/ V
OUT
V
REF
UVLO
UVLO
PFM Error Amp
PWM Error Amp
OSC
EA
OV Threshold
UV Threshold
Shutdown
Thermal
TSD
S
R
Q
Q
IPEAK
IPEAK
Band
Gap
PWM
PFM
IPEAK
POFF
Logic and timing
SHDN
Switch Drive
PWM/PFM
PWM/PFM
Logic
PWM
IPEAK
Disable
Switcher
-ILPK
Soft Start
NOFF
I
-ILPK
PK
PFM
Limit
-I
ILIM
PK
Limit
PWM
V
REF
ILIM
MCP1603
PFM
V
REF
DS22042A-page 3
GND
L
UVLO
TSD
X