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VA7920 - HIGH EFFICIENCY DC-DC STEP UP CONVERT

This page provides the datasheet information for the VA7920, a member of the VA7910 HIGH EFFICIENCY DC-DC STEP UP CONVERT family.

Datasheet Summary

Description

VA7910/VA7920 is a high efficiency DC-DC step up convert circuit widely used for the devices powered by one to three-cells Li-ion/ Li-polymer battery or hydro-nickel battery and need a steady high voltage.

The static operating current of VA7910/VA7920 is extra low.

Features

  • 0.9V start up voltage;.
  • 0.9V minimum operating voltage;.
  • Above 95% efficiency;.
  • Low battery voltage detector;.
  • Fixed 3.3V and 5V output or adjustable output from 2V to 5V;.
  • Internal synchronous rectifier;.
  • Zero shut down current;.
  • Little external elements.
  • Ultra small TSSOP8, MSOP8 package;.

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Datasheet preview – VA7920

Datasheet Details

Part number VA7920
Manufacturer Vimicro
File Size 126.24 KB
Description HIGH EFFICIENCY DC-DC STEP UP CONVERT
Datasheet download datasheet VA7920 Datasheet
Additional preview pages of the VA7920 datasheet.

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Full PDF Text Transcription

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VA7910/VA7920 REV 1.1/Feb 2006 HIGH EFFICIENCY DC-DC STEP UP CONVERT FEATURES „ 0.9V start up voltage; „ 0.9V minimum operating voltage; „ Above 95% efficiency; „ Low battery voltage detector; „ Fixed 3.3V and 5V output or adjustable output from 2V to 5V; „ Internal synchronous rectifier; „ Zero shut down current; „ Little external elements „ Ultra small TSSOP8, MSOP8 package; APPLICATION „ One to three-cell battery powered devices; „ PDA and handheld instruments; „ Cell phones; „ Pagers; „ GPS； „ Digital cameras; INTRODUCTION VA7910/VA7920 series circuits are high efficiency DC-DC step up converts, with a few external components to realize the conversion from the battery voltage to the expect output voltage. It can be widely used in PDA 、 cell phones、hand-held devices and so on.
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