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A8513：宽输入电压范围高效率容错 LED 驱动器
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A8513 是一款用于 LCD 背光的单输出白光 LED (WLED) 驱动器。它整合了电流模式升压转换器与内部电源开关和一个电流汲入装置。A8513 可采用 4.5 至 40 伏特的单电源进行操作，以满足启动/关闭、冷车启动和负载突降要求。2 MHz 升压转换器开关频率可使 A8513 在 AM 无线电波段以上运行。
如有需要，可将故障标记用作电路的一部分，以在故障时驱动外部 P-FET 断开系统的输入供电。A8513 提供各种保护，包括输出短路和过电压、开路或短路二极管、开路或短路 LED 引脚、短路升压开关或电感器、短路 ISET 电阻器和 IC 过温保护。两级逐波限流功能可提供软启动和防止内部电流开关出现高电流过载。
