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AX3821 - 600KHz Synchronous Rectified Step-Down Converter

General Description

The AX3821 is a monolithic synchronous buck regulator.

The device integrates two 100mΩ MOSFETs, and provides 1.6A of continuous load current over a wide input voltage of 4.5V to 13V.

Current mode control provides fast transient response and cycle-by-Cycle current limit.

Key Features

  • 1.6A Output Current Wide 4.5V to 13V Operating Input Range Integrated 100mΩ Power MOSFET Switches Output adjust from VFB to 11V Internal compensation Up to 94% Efficiency Stable with Low ESR Ceramic Output Capacitors Fixed 600KHz Frequency Cycle-by-Cycle Over Current Protection Thermal shutdown and short circuit protections  BLOCK.

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Datasheet Details

Part number AX3821
Manufacturer AXElite
File Size 1.19 MB
Description 600KHz Synchronous Rectified Step-Down Converter
Datasheet download datasheet AX3821 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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AX3821 1.6A, 13V, 600KHz Synchronous Rectified Step-Down Converter  GENERAL DESCRIPTION The AX3821 is a monolithic synchronous buck regulator. The device integrates two 100mΩ MOSFETs, and provides 1.6A of continuous load current over a wide input voltage of 4.5V to 13V. Current mode control provides fast transient response and cycle-by-Cycle current limit. Internal soft-start prevents inrush current at turn-on, and in shutdown mode the supply current drops to 1μA. This device, available in SOT-23-6L package, provides a very compact solution with minimal external components.  FEATURES 1.6A Output Current Wide 4.