ACT4060
Rev8, 24-Jul-07
Wide Input 2A Step Down Converter
FEATURES
2A Output Current
Up to 95% Efficiency
4.75V to 20V Input Range
8µA Shutdown Supply Current
420kHz 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 ACT4060 is a current-mode step-down DC/DC
converter that generates up to 2A of output current
at 420kHz switching frequency. The device utilizes
Active-Semi’s proprietary ISOBCD20 process for
operation with input voltages up to 20V.
Consuming only 8μA in shutdown mode, the
ACT4060 is highly efficient with peak operating effi-
ciency at 95%. Protection features include cycle-by-
cycle current limit, thermal shutdown, and frequency
foldback at short circuit.
The ACT4060 is available in a SOP-8 package and
requires very few external devices for operation.
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 APPLICATION CIRCUIT
Innovative Products.
Active Solutions.
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Copyright © 2006 Active-Semi, Inc.
ACTIVE-SEMI [ ACTIVE-SEMI, INC ]
