目录

1.产品概述       2.产品特点     ZEf嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）ZEf嘉泰姆

5.产品封装       6.电路原理图  ZEf嘉泰姆

7.相关产品ZEf嘉泰姆

   产品概述 返回TOPZEf嘉泰姆

     CXES4278系列是内置Pch MOS FET的带ON/OFF功能及保护输出电流功能的低导通阻抗负载开关IC。因为能用CE端子控制ON/OFF，如在降压DC/DC转换器等输出中使用本产品，能以最大限度的效率来分配必要的电源，实现延长电池的使用时间及使用寿命。给CE端子输入低电平能使IC处于待机状态。此外，由于内置了限定电流等保护功能，能省略既往需要由MOSFET等晶体管和阻抗元件等单功能形成的保护电路。在待机状态，由VOUT端子-VSS端子之间的内部开关能使输出电容的充电电荷放电。此放电功能能使VOUT端子高速地返回VSS电平。作为保护电路，内置了过电流保护电路和限流电路(foldback电路)，能工作于输出电路的过电流保护和保护输出端子短路。The CXES4278 series is a low ON resistance load switch IC with ON/OFF control and output current protection which integrates a P-channel MOSFET. By connecting the CXES4278 to the output pin of a step-down DC/DC converter, the CE pin controls ON/OFF for each distribution switch to deliver power per requirements and maximize total power efficiency. As a result, the CXES4278 helps to extend battery life and product operation time. The series contains a current limit and protection circuit so these are not required externally unlike discrete circuit solutions where MOSFETs and resistors are used. When a low signal is input to the CE pin, the series enters stand-by mode. Even where a load capacitor is connected to the output pin during stand-by, the electric charge stored at the load capacitor is discharged through the internal switch. As a result, the VOUT pin voltage falls quickly to the VSS level. The series contains over current protection with fold-back current circuitry which operates as over current protection and short circuit protection for the output pin.ZEf嘉泰姆

   产品特点 返回TOPZEf嘉泰姆

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   应用范围 返回TOPZEf嘉泰姆

● Smart phones / Mobile phones ZEf嘉泰姆

● Digital still cameras / Camcorders ZEf嘉泰姆

● Portable game consolesZEf嘉泰姆

   技术规格书（产品PDF) 返回TOP ZEf嘉泰姆

     需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！ZEf嘉泰姆

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产品封装图 返回TOPZEf嘉泰姆

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电路原理图 返回TOPZEf嘉泰姆

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