1.9A Fixed Frequency White LED Driver CXAC85182 is a step-up converter designed for driving up to 8 series white LEDs for backlighting application

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The CXAC85182 is a step-up converter designed for driving up to 8 series white LEDs for backlighting application. The CXAC85182 uses current mode, 1.2MHZ fixed frequency architecture to regulate the LED current, which is set through an external current sense resistor. Its low 300mV feedback voltage reduces power loss and improves efficiency. The OV pin monitors the output voltage and turns off the converter if an over-voltage condition is present due to an open circuit condition. The CXAC85182 includes under-voltage lockout, current limiting and thermal shutdown protection preventing damage in the event of an output overload. The driver is available in small 6-pin SOT-23 package.

   产品特点 返回TOPlDu嘉泰姆

 2.5V to 5.5V operating input voltage range lDu嘉泰姆

 Drives up to 8 series White LEDs lDu嘉泰姆

 1.2MHz Fixed Switching Frequency lDu嘉泰姆

 Wide range for PWM dimming (200Hz to 200KHz) lDu嘉泰姆

 Internal 1.9A switching current limit lDu嘉泰姆

 Over Voltage Protection (OVP) lDu嘉泰姆

 Internal Soft-start Function lDu嘉泰姆

 Current limit and Thermal shutdown protection lDu嘉泰姆

 Under voltage Lockout lDu嘉泰姆

 Available in the 6-pin SOT-23 PackagelDu嘉泰姆

   应用范围 返回TOPlDu嘉泰姆

 Camera Flash White LED lDu嘉泰姆

 Mobile Phone, Smart Phone LED Backlight lDu嘉泰姆

 PDA LED Backlight lDu嘉泰姆

 Digital Still Cameras lDu嘉泰姆

 CamcorderlDu嘉泰姆

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