The A8435 high efficiency charge pump IC offer a simple, low-cost white LED driver solution for portable electronics display applications. Using a proprietary control scheme (1, 1.5), the A8435 can output well-matched currents for up to 4 LEDs, while maintaining the highest efficiency over most of the Li-ion battery lifetime.


The A8435 accepts an input range of 2.7 to 5.5 V and delivers up to 30 mA for each of the four regulated current sources. The A8435 can deliver a total output current of 120 mA, meeting the requirements of most Li-ion battery-powered white LED backlight applications. Outputs can also be tied together for WLED flash/torch applications.


The A8435 offers flexible options for LED current driving. The LED current can be set by any of the following methods: (a) choosing an appropriate value for RSET, (b) 2-bit parallel control with 3 levels, (c) PWM control, or (d) serial programming.

The A8435 is available in a very thin profile 0.75 mm (nominal height) 3 3 mm MLP-16 package (ES), fitting the needs of space-conscious applications.

类别 PMIC - LED 驱动器
描述 IC LED DRVR WHITE BCKLGHT 16-MLP
系列 -
制造商 Allegro Microsystems Inc
恒流 -
类型
恒压 -
拓扑 PWM，切换式电容器（充电泵）
输出数 4
内部驱动器 是
效率
电流_输出/通道
类型_初级 背光，闪灯/白光
类型_次级 白色 LED
频率 1MHz
内部开关
电压_电源 2.7 V ~ 5.5 V
电压_输出 -
安装类型 表面贴装
封装/外壳 16-WFQFN 裸露焊盘
供应商器件封装 16-QFN/MLP 裸露焊盘（3x3）
包装 剪切带 (CT)
工作温度 -40°C ~ 85°C

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