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XRP6840 - 4.3A Supercapacitor Flash LED Driver

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.

Key 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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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.

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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.