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VA7910 - HIGH EFFICIENCY DC-DC STEP UP CONVERT

General 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.

Key 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;.

📥 Download Datasheet

Datasheet Details

Part number VA7910
Manufacturer Vimicro
File Size 126.24 KB
Description HIGH EFFICIENCY DC-DC STEP UP CONVERT
Datasheet download datasheet VA7910 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.

View original datasheet text
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.