资 源 简 介
ADP8866结合了可编程背光LED电荷泵驱动器和自动闪烁功能。9个LED驱动器可以独立编程，电流最高可达25 mA。电流水平、渐变时间和闪烁速率可以一次编程并在一个环路上自主执行。背光LED可以设置独立的渐亮和渐暗时间。
整个配置由一个双电容电荷泵驱动，其增益为1&TImes;、1.5&TImes;和2&TImes;。这种配置采用2.5 V至5.5 V电源供电，能够驱动最高240 mA的输出电流。该器件具备完整的安全特性，包括短路保护、过压保护和过温保护，因而很容易实现安全、稳定的设计。此外，输入浪涌电流会受到集成式软启动及其受控输入至输出隔离的限制。
The ADP8866 combines a programmable backlight LED charge pump driver with automaTIc blinking functions. Nine LED drivers can be independently programmed at currents up to 25 mA. The current level, fade time, and blinking rate can be programmed once and executed autonomously on a loop. Separate fade-in and fade-out times can be set for the backlight LEDs.
Driving all of this is a two-capacitor charge pump with gains of 1×, 1.5×, and 2×. This setup is capable of driving a maximum IOUT of 240 mA from a supply of 2.5 V to 5.5 V. A full suite of safety features including short-circuit, overvoltage, and over-temperature protection allows easy implementation of a safe and robust design. Additionally, input inrush currents are limited via an integrated soft start combined with controlled input to output isolation.
