Datasheet > XRP6840_10

XRP6840_10

更新时间： 2024-11-25 12:00:55

品牌	Logo	应用领域
艾科嘉 - EXAR		驱动器闪光灯
页数	文件大小	规格书
2页	116K
描述
4.3A Super Capacitor Flash LED Driver with 12C

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XRP6840_10 数据手册

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XRP6840 4.3A Super Capacitor Flash LED Driver with I2C

General Description:

XRP6840 controlled current dual cell super capacitor

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 super capacitor charging

current and voltage.

Architectured around a 2.4Mhz tri mode 1x,1.5x and 2x

pump charges the stacked super capacitor to programmed

output voltage with no more than 600mA drown from the

battery. While charging, an internal active balance circuitry insures matching of the stacked capacitor’s

voltages.

A Standard 2-line I2C serial interface allows the dynamic programming of LED currents in Flash and torch

modes, flash timeout and channel enable, gain control, capacitor charge voltage and enable. The

XRP6840 comes in a 2 and 3 channel

versions

supporting

per

respectively

channel and

440mA/2.15A

300mA/1.45A in torch/flash modes.

The flexibility designed into the XRP6840

can also allow it to reverse the power flow

back to the input to prevent unintended

system resets as the battery voltage drops.

The XRP6840 is available in

lead-free“green”/halogen

TQFN package.

free

20-pin

Key Features:



Programmable 4.3A flash led

driver

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