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产品LM36922HTI
描述

LM36922H 是一款专为 LCD 显示屏背光照明而设计的超紧凑型、高效双串白色 LED 驱动器。该器件最多可为 12 个串联 LED 供电,每条灯串的电流高达 25mA。该器件采用自适应电流调节方法,可在保持电流稳定的同时为每个灯串提供不同的 LED 电压。LED 电流通过 I2C 接口或逻辑电平 PWM 输入进行调节。PWM 占空比在内部进行感测并映射到一个 11 位电流,从而提供宽 PWM 频率范围并在 50µA 至 25mA 范围内实现无噪声运行。

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