700毫安驱动电流CXUS65171照相机闪光灯大电流白光LED驱动的电荷泵电感式DC调节器降低输出纹波低EMI解决方案火炬模式连续输出20%的闪光模式电流

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1.产品概述       2.产品特点     wzV嘉泰姆

3.应用范围       4.技术规格书下载（PDF文档）wzV嘉泰姆

5.产品封装       6.电路原理图  wzV嘉泰姆

7.相关产品wzV嘉泰姆

   产品概述 返回TOPwzV嘉泰姆

The CXUS65171 is a charge pump for high-current white LED driving used in camera flash applications. The architecture of two bucket capacitors is used to decrease the output ripple and provides low EMI solution compared to inductive DC-DC regulators. The CXUS65171 has independent flash/torch/shutdown modes. The CXUS65171 is capable to output 500mA of regulated current in flash mode for the duration greater than 500ms. While driving 700mA output current, the reduced duration is limit by CXUS65171’s over-temperature protection. There is a one second safety timer in this mode to avoid LED damage caused by overheat. The CXUS65171 can outputs 20% of flash mode current continuously in torch mode. The flash mode has priority over the torch mode. A resistor connected to ISET pin, which is in series with the LED, is to set the current. The ISET voltage is 250mV and 50mV in flash and torch mode respectively. The GCXUS65171is available in tiny 10-pin 3x3mm TDFN package.

   产品特点 返回TOPwzV嘉泰姆

„ Independent flash/torch/shutdown modes wzV嘉泰姆

„ Up to 700mA drive current wzV嘉泰姆

„ Flash timeout protection wzV嘉泰姆

„ Torch mode set to 20% of flash current wzV嘉泰姆

„ 1X/2X mode for torch mode to maximize efficiency wzV嘉泰姆

 „ Wide input voltage range from 3V to 5.5V wzV嘉泰姆

„<1μA shutdown current wzV嘉泰姆

„ Input/Output over-voltage protection wzV嘉泰姆

„ Short-circuit protection wzV嘉泰姆

„ Over-temperature protection wzV嘉泰姆

„ Tiny TDFN3X3-10 packagewzV嘉泰姆

   应用范围 返回TOPwzV嘉泰姆

„ Cellular camera phone wzV嘉泰姆

„ Digital still camera wzV嘉泰姆

„ PDA camera wzV嘉泰姆

„ Camcorder torch lampwzV嘉泰姆

   技术规格书（产品PDF) 返回TOP wzV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！wzV嘉泰姆

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