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2.25MHz的固定频率1A负载电流能力2.7V到5.5V的输入电压CXSD62268同步降压DC/DC适合一节锂电池或三节的镍氢电池/镍铬电池的便携式设备
发表时间：2020-05-12
浏览次数：89

目录

1.产品概述       2.产品特点     JPu嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）JPu嘉泰姆

5.产品封装       6.电路原理图  JPu嘉泰姆

7.相关产品JPu嘉泰姆

   产品概述 返回TOPJPu嘉泰姆

    CXSD62268是一款应用于电池供电的便携式设备的同步降压DC/DC。2.5V到5.5V的输入电压范围使CXSD62268适合工作在一节锂电池或三节的镍氢电池/镍铬电池的便携式设备。该芯片也可工作于标准的3.3V或5V电压。CXSD62268工作在2.25MHz的固定开关频率下，允许应用小的电感和电容以节省面积。内部同步开关管提升效率并无需外部肖特基二极管。CXSD62268内部集成了软启动功能，避免了电流启动过程中电流的过充。CXSD62268具有可供选择的force PWM和PFM/PWM模式。force PWM模式的纹波噪声小，而PFM模式具有轻载高效的优势。CXSD62268采用TDFN-6封装，并能提供高达1A的输出电流。The CXSD62268 is synchronous step-down DC-DC converters optimized for battery powered portable applications. The 2.7V to 5.5V input voltage range makes CXSD62268 ideal for powering portable equipment that runs from 1-cell Li-Ion or 3-cell NiMH/NiCD batteries. The device is also suitable to operate from a standard 3.3V or 5V voltage rail. The CXSD62268 operates at 2.25MHz fixed switching frequency allowing the use of small inductors and capacitors to achieve a small solution size. The internal synchronous switch increases efficiency and eliminates the need for an external schottky diode. The CXSD62268 has internal soft start and avoids inrush current during startup. The CXSD62268 has a user selectable mode of forced PWM and PFM/PWM mode. The forced PWM mode operation provides the lowest ripple noise and the PFM mode operation provides high efficiency at light loads. The CXSD62268is available in SOT23-5 and TDFN-6 package. For TDFN-6 package, it provides up to 1A output current.

   产品特点 返回TOPJPu嘉泰姆

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•高至95%的效率JPu嘉泰姆

•2.25MHz的固定频率JPu嘉泰姆

•1A负载电流能力JPu嘉泰姆

•典型30μA的静态电流JPu嘉泰姆

•2.7V到5.5V的输入电压范围JPu嘉泰姆

•低至0.6V的可调输出电压JPu嘉泰姆

•无需肖特基二极管JPu嘉泰姆

•短路保护和过温保护JPu嘉泰姆

•内部软启动功能JPu嘉泰姆

TDFN-6的封装JPu嘉泰姆

符合ROHS标准和100%无铅JPu嘉泰姆

 High Efficiency Up to 95%JPu嘉泰姆

 2.25MHz Constant Switching FrequencyJPu嘉泰姆

 1A Available Load CurrentJPu嘉泰姆

 30μATypical Quiescent CurrentJPu嘉泰姆

 2.7V to 5.5V Input Voltage RangeJPu嘉泰姆

 Adjustable Output Voltage as Low as 0.6VJPu嘉泰姆

 No Schottky Diode RequiredJPu嘉泰姆

 Short Circuit and Thermal ProtectionJPu嘉泰姆

 Internal Soft Start FunctionJPu嘉泰姆

 Available in TDFN-6 and SOT23-5 PackagesJPu嘉泰姆

 RoHS Compliant and 100% Lead(Pb)-FreeJPu嘉泰姆

Halogen-FreeJPu嘉泰姆

   应用范围 返回TOPJPu嘉泰姆

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•固态硬盘模块JPu嘉泰姆

•智能手机JPu嘉泰姆

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•μC/μP, FPGA和数字信号处理器电源JPu嘉泰姆

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 SSD ModuleJPu嘉泰姆

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 Plug-in DC/DC Modules for Routers andJPu嘉泰姆

SwitchersJPu嘉泰姆

   技术规格书（产品PDF) 返回TOP JPu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！JPu嘉泰姆

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产品封装图 返回TOPJPu嘉泰姆

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电路原理图 返回TOPJPu嘉泰姆

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