The XRP6840 is a controlled-current dual-cell supercapacitor charger and high power LED driver. Operating from a standard lithium-ion battery, it 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.
A standard 2-line I2C serial interface allows the dynamic programming of LED currents in torch and flash modes, flash timeout, channel enable, gain control, capacitor charge voltage, and enable. The XRP6840 comes in a 2 and 3 channel version supporting respectively 440mA/2.15A per channel and 300mA/1.45A in torch/flash modes.
技术特性
数据手册S说明书软件 | 产品应用
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| 器件型号 | 封装编码 | 最低温度 | 最高温度 | 状态 |
|---|---|---|---|---|
| XRP6840AILB-F | TQFN-20 | -40 | 125 | Active |
| XRP6840AILBTR-F | TQFN-20 | -40 | 125 | Active |
| XRP6840BILB-F | TQFN-20 | -40 | 125 | Active |
| XRP6840BILBTR-F | TQFN-20 | -40 | 125 | Active |
| XRP6840EVB | Board | Active |