ACT4072
Rev 1, 12/2006
Wide Input 2A Step Down Converter
FEATURES
2A Output Current
Up to 95% Efficiency
Up to 30V Input Range
6µA Shutdown Supply Current
400kHz Switching Frequency
Adjustable Output Voltage
Cycle-by-Cycle Current Limit Protection
Thermal Shutdown Protection
Frequency FoldBack at Short Circuit
Stability with Wide Range of Capacitors,
Including Low ESR Ceramic Capacitors
GENERAL DESCRIPTION
The ACT4072 is a current-mode step-down
DC/DC converter that generates up to 2A output
current at 400kHz switching frequency. The
device utilizes Active-Semi’s proprietary
ISOBCD30 process for operation with input
voltage up to 30V.
Consuming only 6µA in shutdown mode, the
ACT4072 is highly efficient with peak efficiency at
95% when in operation. Protection features
include cycle-by-cycle current limit, thermal
shutdown, and frequency foldback at short circuit.
The ACT4072 is available in SOP-8 package and
requires very few external devices for operation.
SOP-8 Package
APPLICATIONS
TFT LCD Monitors or Televisions and HDTV
Portable DVD Players
Car-Powered or Battery-Powered Equipment
Set-Top Boxes
Telecom Power Supplies
DSL and Cable Modems and Routers
TYPICAL APPLICATION CIRCUIT
Innovative Products.
Active Solutions.
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Copyright © 2006 Active-Semi, Inc.
ACTIVE-SEMI [ ACTIVE-SEMI, INC ]
