器件名称: ACT4012A
功能描述: Wide Input 1.5A Step Down Converter
文件大小: 345.52KB 共10页
简 介:Rev PrA, 21-Nov-07 Preliminary Information - All Information Subject to Change
ACT4012A
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 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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www.active-semi.com Copyright 2006 Active-Semi, Inc.
ACT4012A
Rev PrA, 21-Nov-07
ORDERING INFORMATION
PART NUMBER
ACT4012ASH ACT4012ASH-T
TEMPERATURE RANGE
-40°C to 85°……
