Fixed Frequency White LED Step-Up Converter CXSU63227 CXSU63228 is a step-up DC/DC converter specifically designed to drive up to 6 series white LEDs with constant current. Series connection of the LE

   产品概述 返回TOP4wM嘉泰姆

The CXSU63227 CXSU63228 is a step-up DC/DC converter specifically designed to drive up to 6 series white LEDs with constant current. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminates the need for ballast resistors. The CXSU63227 CXSU63228 switches at 1.4MHz, allowing the use of tiny external components. A low 0.25V feedback voltage minimizes power loss in the current setting resistor for high efficiency. The OVP pin monitors the output voltage and turns off the converter whenever the LEDs are open. The CXSU63227 CXSU63228 is available in low profile SOT-23-6 package.

   产品特点 返回TOP4wM嘉泰姆

 Inherently Matched LED Current 4wM嘉泰姆

 High Efficiency:82% 4wM嘉泰姆

 Drives Up to Six LEDs from 2.2V Supply 4wM嘉泰姆

 20V Over Voltage Protection 4wM嘉泰姆

 Fast 1.4MHz Switching Frequency 4wM嘉泰姆

 Requires Only 1μF Output Capacitors 4wM嘉泰姆

 SOT-23-6 Package4wM嘉泰姆

   应用范围 返回TOP4wM嘉泰姆

 Communication equipment 4wM嘉泰姆

 White LED Backlight Display for PDA 4wM嘉泰姆

 Pocket PC 4wM嘉泰姆

 Handheld Devices 4wM嘉泰姆

 Cellular Phones 4wM嘉泰姆

 White LED display backlighting4wM嘉泰姆

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