• [ CXLE88128 ]"

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1.产品概述       2.产品特点     u88嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）u88嘉泰姆

5.产品封装       6.电路原理图  u88嘉泰姆

7.相关产品u88嘉泰姆

   产品概述 返回TOPu88嘉泰姆

    CXLE88128是一颗大电流输出的电荷泵LED驱动器，用以驱动照相手机或者其他便携式设备的Flash LED。通过外接的两个PIN，可选择其工作模式：Flash模式或Torch模式。在Flash模式下，CXLE88128可输出至少500mA，持续至少500毫秒；或者输出高至700mA，但持续时间需相应减少，比如350毫秒。在Torch模式下，CXLE88128可持续输出Flash模式下设定的40％的电流。在Flash模式下,CXLE88128始终以2X Charge Pump模式工作；而在Torch模式下，它会自动根据负载电流、LED正向导通电压和输入电压的大小，来优化工作模式，提高效率。The CXLE88128 is a large-current charge pump designed specifically for white LEDs used in camera flash applications. Only one small bucket capacitor is required to develop the output drive, providing a low EMI solution compared with inductive boost regulator. The CXLE88128 has two operation modes: Flash mode and Movie mode. In Flash mode, the CXLE88128 is capable of delivering up to 700mA. A safety timer is also included to ensure the LED can not be on indefinitely and overheat. The CXLE88128 is available in a 10-pin TDFN package.

   产品特点 返回TOPu88嘉泰姆

• 高达3A的输出电流u88嘉泰姆

• 轻负载时自动跳跃周期以提高效率u88嘉泰姆

• 230ns最小导通时间u88嘉泰姆

• 35V输入浪涌电压保护u88嘉泰姆

• 内部集成160/110mΩ的DMOS开关管u88嘉泰姆

• 输入电压范围：4.5V至30Vu88嘉泰姆

• 输出电压可调：0.925V至20Vu88嘉泰姆

• 效率高达95%u88嘉泰姆

• 关断电流<1μAu88嘉泰姆

• 340KHz固定开关频率u88嘉泰姆

• 可编程的软启动u88嘉泰姆

• 过温保护和过流保护u88嘉泰姆

• 输入过压/欠压保护u88嘉泰姆

• SOP-8（EP）封装u88嘉泰姆

• 符合RoHS规范及Pb-Freeu88嘉泰姆

Input Voltage Range — 2.7V to 5.5Vu88嘉泰姆

Flash and Movie — Two Selectable Modesu88嘉泰姆

Up to 700mA Output Current — Flash Modeu88嘉泰姆

Flash Mode Safety Timer Shut-Offu88嘉泰姆

1X and 2X Automatic Mode for High Efficiencyu88嘉泰姆

External Flash Control Pin for Synchronizationu88嘉泰姆

to a Camera Module or Graphics Controlleru88嘉泰姆

Short-Circuit, Over-Voltage, Over-Current andu88嘉泰姆

Over-Temperature Protectionu88嘉泰姆

Soft-Start Functionalityu88嘉泰姆

3mm′3mm TDFN-10 Packageu88嘉泰姆

RoHS Compliant and 100% Lead (Pb)-Freeu88嘉泰姆

Halogen-Freeu88嘉泰姆

   应用范围 返回TOPu88嘉泰姆

• 分布式电源u88嘉泰姆

• 网络系统u88嘉泰姆

• PC设备u88嘉泰姆

• 便携产品u88嘉泰姆

Mobile Camera Phonesu88嘉泰姆

Digital Camerasu88嘉泰姆

PDAs with Built-In Camerasu88嘉泰姆

   技术规格书（产品PDF) 返回TOP u88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！u88嘉泰姆

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产品封装图 返回TOPu88嘉泰姆

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电路原理图 返回TOPu88嘉泰姆

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◀ Previous:he CXLE88127 is a 2MHz or 4MHz fixed frequency current mode synchronous boost converter with two current sources The device is designed to operate 1.5A constant current driver

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Next▶:The CXLE88129 is a large-current charge pump designed specifically for white LEDs used in camera flash applications. Only one small bucket capacitor is required to develop the output drive