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A4491 - Triple Output Step-Down Switching Regulator

Description

Designed to provide the power supply requirements of printers, office automation, industrial, and portable equipment, the A4491 provides three high current, high performance, switching regulator outputs in a single package, saving space, cost and component count.

Features

  • Three buck converters in a single package.
  • 4.5 to 23 V input voltage range.
  • 550 kHz fixed frequency.
  • Multiphase switching for smaller components and lower EMI.
  • Independent control of each converter for sequencing and shutdown control.
  • Power-on-reset flag with adjustable delay.
  • Internal compensation to minimize components and simply design.
  • 4 × 4 mm QFN Package, small PCB footprint.

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Datasheet preview – A4491

Datasheet Details

Part number A4491
Manufacturer Allegro
File Size 1.08 MB
Description Triple Output Step-Down Switching Regulator
Datasheet download datasheet A4491 Datasheet
Additional preview pages of the A4491 datasheet.

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Full PDF Text Transcription

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A4491 Triple Output Step-Down Switching Regulator FEATURES AND BENEFITS ▪ Three buck converters in a single package ▪ 4.5 to 23 V input voltage range ▪ 550 kHz fixed frequency ▪ Multiphase switching for smaller components and lower EMI ▪ Independent control of each converter for sequencing and shutdown control ▪ Power-on-reset flag with adjustable delay ▪ Internal compensation to minimize components and simply design ▪ 4 × 4 mm QFN Package, small PCB footprint PACKAGE: 20-contact QFN (suffix ES) Approximate footprint DESCRIPTION Designed to provide the power supply requirements of printers, office automation, industrial, and portable equipment, the A4491 provides three high current, high performance, switching regulator outputs in a single package, saving space, cost and component count.
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