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ACT4533 Datasheet Wide-Input Sensorless CC/CV Step-Down DC/DC Converter

Manufacturer: Active-Semi

Download the ACT4533 datasheet PDF. This datasheet also includes the ACT4533-Active variant, as both parts are published together in a single manufacturer document.

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Note: The manufacturer provides a single datasheet file (ACT4533-Active-Semi.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number ACT4533
Manufacturer Active-Semi
File Size 594.47 KB
Description Wide-Input Sensorless CC/CV Step-Down DC/DC Converter
Download ACT4533 Download (PDF)

General Description

ACT4533 is a wide input voltage, high efficiency Active CC step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode.

ACT4533 provides up to 3A output current at 125kHz switching frequency.

Active CC is a patent-pending control scheme to achieve highest accuracy sensorless constant current control.

Overview

ACT4533 Rev 1, 25-Feb-13 Wide-Input Sensorless CC/CV Step-Down DC/DC.

Key Features

  • 40V Input Voltage Surge.
  • 32V Steady State Operation.
  • Up to 3A Output Current.
  • Constant Current Output with Input up to 32V.
  • Output Voltage up to 12V.
  • 125kHz Switching Frequency Eases EMI Design.
  • Good EMI Performance to Pass EN55022 Radiation Regulation without adding EMI Components.
  • Patent Pending Active CC Sensorless Constant Current Control.
  • Integrated Current Control Improves Efficiency, Lowers Cost, and Reduces.

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