The Exar XRP6840 Supercapacitor Flash LED Driver is a controlled-current, dual-cell supercapacitor charger and high power LED driver that operates from a standard lithium-ion battery. The Exar 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. The Exar XRP6840 Supercapacitor Flash LED Driver with Tri-mode Charge Pump Architecture charges the stacked supercapacitor to the programmed output voltage with no more than 600mA drawn from the battery. A standard 2-line I²C serial interface allows the dynamic programming of LED currents in torch and flash modes. This supercapacitor Flash LED driver comes in a 2- and 3-channel version, supporting 440mA/2.15A per channel and 300mA/1.45A in torch/flash modes.