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XRP6840 - 4.3A Supercapacitor Flash LED Driver

Description

The XRP6840 is a controlled-current dual-cell supercapacitor charger and high power LED driver.

Operating from a standard lithium-ion battery, the XRP6840 provides up to 4.3A of programmable Flash LED current and up to 600mA and 5.6V of programmable supercapacitor charging current and voltage.

Features

  • Programmable 4.3A Flash LED Driver.
  • Torch and Flash Modes.
  • 2 and 3 Channels Versions.
  • Programmable Supercapacitor Charger.
  • 600mA Adjustable Charging Current.
  • Programmable Supercapacitor Voltage.
  • In-rush Current Control.
  • Active Voltage Balance Control.
  • Tri-mode Charge Pump Architecture.
  • 1x, 1.5x, 2x Operation Modes.
  • 2.4MHz Switching Frequency.
  • I2C Serial Interface.
  • Thermal, Over C.

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Datasheet preview – XRP6840

Datasheet Details

Part number XRP6840
Manufacturer Exar Corporation
File Size 654.31 KB
Description 4.3A Supercapacitor Flash LED Driver
Datasheet download datasheet XRP6840 Datasheet
Additional preview pages of the XRP6840 datasheet.

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Full PDF Text Transcription

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December 2009 XRP6840 4.3A Supercapacitor Flash LED Driver with I2C Rev. 1.0.0 GENERAL DESCRIPTION The XRP6840 is a controlled-current dual-cell supercapacitor charger and high power LED driver. Operating from a standard lithium-ion battery, the XRP6840 provides up to 4.3A of programmable Flash LED current and up to 600mA and 5.6V of programmable supercapacitor charging current and voltage. Architectured around a 2.4MHz tri-mode 1x, 1.5x and 2x charge pump, the XRP6840 charges the stacked supercapacitor to the programmed output voltage with no more than 600mA drawn from the battery. While charging, an internal active balance circuitry insures matching of the stacked capacitors’ voltages.
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