Intersil ISL97694A单个锂电池六路LED驱动方案

Intersil公司的ISL97692/3/4A是单个锂电池驱动的4四/六路LED驱动器,静态电流仅为1mA,输入电压可低至2.4V.ISL97692是四路,提供8位PWM调光,可调频率高达30kHz, ISL97693是六路,Direct PWM调光控制,ISL97694A是六路,提供8/10/12位PWM调光,可调频率分别是30kHz,7.5kHz或1.875kHz.主要用于平板电脑,笔记本电脑和智能手机显示器LED背光.本文介绍了ISL97692/3/4A主要特性,方框图,应用电路图和PCB布局图.

The ISL97692, ISL97693, ISL97694A are Intersil’s highly integrated 4- and 6-channel LED drivers for display backlighting . These parts maximize battery life by featuring only 1mA quiescent current, and by operating down to 2.4V input voltage, with no need for higher voltage supplies.

The ISL97692 has 4 channels and provides 8-bit PWM dimming with adjustable dimming frequency up to 30kHz. The ISL97693 has 6 channels with Direct PWM dimming control.
The ISL97694A has 6 channels and provides 8-, 10-, or 12-bit PWM dimming with adjustable dimming frequency up to 30kHz, 7.5kHz, or 1.875kHz, respectively, controlled with I2C or PWM input.
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