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ACT4050 Datasheet Wide Input 3.5a Step Down Converter

Manufacturer: Active-Semi

Overview: Active-Semi ACT4050 Rev 2, 01-Jul-11 Wide Input 3.5A Step Down.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The ACT4050 is a current-mode step-down DC/DC converter that provides up to 3.5A of output current at 400kHz switching frequency.

The device utilizes Active-Semi’s proprietary high voltage process for operation with input voltages up to 15V.

The ACT4050 provides fast transient response and eases loop stabilizati

Key Features

  • 3.5A Output Current.
  • Up to 96% Efficiency.
  • 4.5V to 15V Input Range.
  • 12µA Shutdown Supply Current.
  • 400kHz Switching Frequency.
  • Adjustable Output Voltage From 0.817V.
  • Cycle-by-Cycle Current Limit Protection.
  • Thermal Shutdown Protection.
  • Frequency Fold-Back at Short Circuit.
  • Stability with Wide Range of Capacitors, Including Low ESR Ceramic Capacitors.
  • SOP-8/EP (Exposed Pad) Package.

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