CM2500
W
IDE
I
NPUT
2A S
TEP
D
OWN
C
ONVERTER
GENERAL DESCRIPTION
The CM2500 is a current-mode step-down DC-DC converter
that generates up to 2A output current at 380kHz switching
frequency. The device utilizes advanced BCD process for
operation with input voltage up to 20V consuming only 20μA
in shutdown mode, the CM2500 is highly efficient with peak
efficiency at 95% when in operation.
Protection features include cycle-by-cycle current limit,
thermal shutdown, and frequency fold back at short circuit.
The CM2500 is available in SOP-8 package and requires
very few external devices for operation.
FEATURES
2A Output Current
Up to 95% Efficiency
4.75V to 20V Input Range
20μA Shutdown Supply Current
380kHz Switching Frequency
Adjustable Output Voltage from 1.28V to 0.85·VIN
Cycle-by-Cycle Current Limit Protection
Thermal Shutdown Protection
Frequency Fold Back at Short Circuit
Stability with Wide Range of Capacitors,
SOP-8 Package
APPLICATIONS
TFT LCD Monitors
Portable DVDs
Car-Powered or Battery-Powered Equipments
Set-Top Boxes
Telecom Power Supplies
DSL and Cable Modems and Routers
Termination Supplies
TYPICAL APPLICATIONS
2008/04/15 Rev1.0
Champion Microelectronic Corporation
Page 1
CHAMP [ CHAMPION MICROELECTRONIC CORP. ]
