【IC】具备倒灌电流抑制功能的APL0501X负载开关，输入电压1.2V到5.5V兼备超小封装和超低导通电阻

时间： 2024-05-21 来源：应能微官网

技术问答

在快速发展的智能穿戴、智能手写笔等市场，受限于产品的体积，及锂电池的容量通常都比较小（40mAh到500mAh）。为了更好的延长使用时间，需要利用电源分配开关，关闭一些待机时不用的功能，降低待机电流，从而实现延长电池使用时间的目的。

应能微电子（APM）推出的APL0501系列是一款超小封装，低输入电源电压，低导通电阻负载功率开关，采用先进的BCD工艺设计的超低功耗产品，满足智能消费产品中锂电管理的苛刻要求。

APL0501X由外部使能管脚（ON）控制低导通电阻MOSFET开关，可优化电池寿命和便携式设备自主功能。内部结构为Control Logic +P-MOSFET，工作电压在1.2V到5.5V。ON/OFF输入(ON)控制开关，可以与各种低控制电压信号接口相连。

其中，第一款APL0501A：芯片内集成典型值130欧姆输出下拉电阻，当芯片被关断时，下拉开关闭合实现输出快速放电，起到抑制倒灌电流IREV的功能。第二款APL0501B：相比APL0501A，APL0501B拥有更短的Tr，并取消了快速放电功能，满足客户不同需求。

产品特性

低输入电源电压: 1.2V to 5.5V
低导通电阻

RON=48mΩ at VIN=5.0V

RON=53mΩ at VIN=4.2V

RON=56mΩ at VIN=3.6V

RON=67mΩ at VIN=2.5V

RON=87mΩ at VIN=1.8V

RON=160mΩ at VIN=1.2V

最大1.5A 直流输出电流能力
超低待机功耗: 80nA at 1.8V
超低待机功耗: 5n-7.5A at 1.8V
低使能开关阈值电压，适用于1.2V/1.8V/3.6V/4.2V/5.0V各类逻辑
受控制的开关上升沿速率，避免启动浪涌电流
反向电流保护
封装：WLCSP-4 (0.4mm Pitch)
工作温度：-40°C 到 85°C

应用市场

智能手机
智能穿戴产品（TWS耳机，手表）
智能家居（智能语音，蓝牙音箱等）
平板/笔记本电脑
数码相机
电子笔

典型应用电路

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