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AX3803 - 500KHz Synchronous Rectified Step-Down Converter

Description

The AX3803 is a monolithic synchronous buck regulator.

The device integrates two 110mΩ MOSFETs, and provides 3A of continuous load current over a wide input voltage of 4.75V to 23V.

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

Features

  • 3A Output Current Wide 4.75V to 23V Operating Input Range Integrated 110mΩ Power MOSFET Switches Output adjust from VFB to 20V Internal compensation Up to 94% Efficiency Stable with Low ESR Ceramic Output Capacitors Fixed 500KHz Frequency Cycle-by-Cycle Over Current Protection Thermal shutdown and short circuit protections  BLOCK.

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Datasheet preview – AX3803

Datasheet Details

Part number AX3803
Manufacturer AXElite
File Size 442.98 KB
Description 500KHz Synchronous Rectified Step-Down Converter
Datasheet download datasheet AX3803 Datasheet
Additional preview pages of the AX3803 datasheet.

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Full PDF Text Transcription

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AX3803 3A, 23V, 500KHz Synchronous Rectified Step-Down Converter  GENERAL DESCRIPTION The AX3803 is a monolithic synchronous buck regulator. The device integrates two 110mΩ MOSFETs, and provides 3A of continuous load current over a wide input voltage of 4.75V to 23V. 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 5μA. This device, available in SOP-8L-EP package, provides a very compact solution with minimal external components.  FEATURES 3A Output Current Wide 4.
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