800mA Buck/Boost Charge Pump Flash LED Driver CXLE8750 is a current-regulated charge pump ideal for powering high brightness LEDs for camera flash applications.

   产品概述 返回TOPLuj嘉泰姆

The CXLE8750 is a current-regulated charge pump ideal for powering high brightness LEDs for camera flash applications. The charge pump can be set to regulate two current levels for FLASH and TORCH modes. 

The CXLE8750 automatically switches modes between step-up and step-down ensuring that LED current does not depend on the forward voltage. It switches at 2.4MHz, allowing the use of tiny components. The supply voltage ranges from 2.7V to 5.5V and is ideally suited for all applications powered by a single LI-Ion battery cell or three to four NiCd, NiMH, or Alkaline battery cells. 

The CXLE8750 also features a very low shutdown current, an automatic soft-start mode to limit inrush current, as well as over current, over voltage and over-Thermal shutdown control. 

A low current sense reference voltage (50mV) allows the use of small 0603 current sensing resistors. 

The CXLE8750 is available in Green DFN3×3-10L package and is specified over an ambient temperature range of -40℃ to +85℃.

   产品特点 返回TOPLuj嘉泰姆

● Output Current up to 800mA Luj嘉泰姆

● Up to 95% Efficiency in Torch Mode Luj嘉泰姆

● Adjustable FLASH Mode Current Luj嘉泰姆

● Automatic Buck/Boost Mode Switchover Luj嘉泰姆

● Wide Input Voltage Range: 2.7V to 5.5V Luj嘉泰姆

● Minimum External Components: No Inductors Luj嘉泰姆

● High Frequency Operation: 2.4MHz Luj嘉泰姆

● Low 50mV Reference for Low Loss Sensing Luj嘉泰姆

● PWM Dimming Control Luj嘉泰姆

● Automatic Soft Start Limits Inrush Current Luj嘉泰姆

● Low Ripple and EMILuj嘉泰姆

   应用范围 返回TOPLuj嘉泰姆

 Cellphones Luj嘉泰姆

 PADsLuj嘉泰姆

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