XRP6840 Datasheet PDF - Exar Corporation

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.

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 Current and Output
   Short Protection
• LED Short Detection
• RoHS Compliant “Green”/Halogen Free
   20-pin 4mmx4mm TQFN package

APPLICATIONS
• High Power Torch/Strobe/Flash LED
• High Resolution Cameras
• Generic High Power Lighting
• High Power White LED Backlighting