ACT4070YH-T データシートの表示（PDF） - Active-Semi, Inc

部品番号

コンポーネント説明

一致するリスト

ACT4070YH-T

Wide Input 3A Step Down Converter

Active-Semi, Inc 

ACT4070

Rev 0, 12/2006

Wide Input 3A Step Down Converter

FEATURES

 3A Output Current

 Up to 95% Efficiency

 4.5V to 30V Input Range

 6µA Shutdown Supply Current

 400kHz Switching Frequency

 Adjustable Output Voltage

 Cycle-by-Cycle Current Limit Protection

 Thermal Shutdown Protection

 Internal Soft Start Function

 Frequency Fold Back at Short Circuit

 Stability with Wide Range of Capacitors,

Including Low ESR Ceramic Capacitors

 SOP-8/EP (Exposed Pad) 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

GENERAL DESCRIPTION

The ACT4070 is a current-mode step-down

DC/DC converter that generates up to 3A 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

ACT4070 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 device also includes an internal soft start

function to prevent overshoot.

The ACT4070 is available in SOP-8/EP exposed

pad package and requires very few external

devices for operation.

TYPICAL APPLICATION CIRCUIT

Innovative Products. Active Solutions.

-1-

Copyright © 2006 Active-Semi, Inc.

www.active-semi.com

Share Link: