器件名称: ACT4012A_08
功能描述: Wide Input 1.5A Step Down Converter
文件大小: 299.12KB 共10页
简 介:ACT4012A
Rev0, 16-May-08
Wide Input 1.5A Step Down Converter FEATURES
1.5A Output Current Up to 94% Efficiency Up to 20V Input Range 10A 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 ACT4012A is a current-mode step-down DC/DC converter that generates up to 1.5A output 420kHz switching frequency. The device utilizes Active-Semi’s proprietary ISOBCD20 process for operation with input voltages up to 20V. Consuming only 10A in shutdown mode, the ACT4012A is highly efficient with peak efficiency at 94% when in operation. Protection features include cycle-by-cycle current limit, thermal shutdown, and frequency foldback at short circuit. The ACT4012A 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 S-Top Boxes Telecom Power Supplies DSL and Cable Modems and Routers Termination Supplies
TYPICAL APPLICATION CIRCUIT
VIN
12V
BS IN SW
5V/1.5A
ACT4012A
ENABLE EN G FB COMP
+
Innovative PowerTM
-1-
www.active-semi.com Copyright 2008 Active-Semi, Inc.
ACT4012A
Rev0, 16-May-08
ORDERING INFORMATION
PART NUMBER
ACT4012ASH ACT4012ASH-T
TEMPERATURE RANGE
-40°C to 85°C -40°C to 85°C
PACKAGE
SO……
