1A开关型锂电池充电自带1A升压放电CXLB74157针对4.2V电池，可支持同口进出的，1A充放电的移动电源芯片，可用于蓝牙充电仓，口红移动电源，雾化器，补水仪。其内置了一个慢闪烁的充电指示灯和一个高亮的放电指示灯。CXLB74157是目前业界尺寸最小，采用SOT23-5，并实现1A充电，1A升压的锂电池PMU芯片

   产品概述 返回TOPlBu嘉泰姆

      CXLB74157 is a switching Li-Ion battery charger capable of delivering up to 1.2A of charging current to the battery and also capable of delivering up to 5V/1.2A in boost operation, with high efficiency in both charging mode and boost mode. For charging, it uses a proprietary control scheme that eliminates the current sense resistor for conventional constant current control, maximizing efficiency, reducing charging time and reducing costs. It can also output a 5V voltage in the reversed direction by boosting from the battery. It only needs a single inductor to provide power bi-directionally with a proprietary automatic mode detect and switch scheme. CXLB74157 is an ideal all-in-one solution for battery charging and discharge applications, such as power banks, smart phones, and tablets with only one USB port that can be used for charging battery function. CXLB74157 is suitable for charging a 4.2V Li-ion battery. And CXLB74157is in SOT23-5 package.针对4.2V电池，可支持同口进出的，1A充放电的移动电源芯片，可用于蓝牙充电仓，口红移动电源，雾化器，补水仪。其内置了一个慢闪烁的充电指示灯和一个高亮的放电指示灯。CXLB74157是目前业界尺寸最小，采用SOT23-5，并实现1A充电，1A升压的锂电池PMU芯片。

   产品特点 返回TOPlBu嘉泰姆

 Bi-Directional Power conversion with Single Inductor lBu嘉泰姆

 Automatic Mode Switching lBu嘉泰姆

 Switching Charger lBu嘉泰姆

 5V Synchronous Boost lBu嘉泰姆

 Up to 95% Efficiency lBu嘉泰姆

 Up to 1.2A Max charging current and 1.2A discharging lBu嘉泰姆

 No-Battery detection lBu嘉泰姆

 No External Sense resistorlBu嘉泰姆

   应用范围 返回TOPlBu嘉泰姆

 Tablet, MID lBu嘉泰姆

 Smart Phone lBu嘉泰姆

 Power BanklBu嘉泰姆

   技术规格书（产品PDF) 返回TOP lBu嘉泰姆

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