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LT3003 - 3-Channel LED Ballaster with PWM

The LT3003 operates in boost mode, “buck mode” and “buck-boost mode”. A True Color PWM Dimming ratio of up to 3000:1 is achievable using a logic-level signal at the PWM pin for all modes without the need for external level-shifting circuitry. For applications with input supply above and below the output voltage of the LED strings, the LT3003 allows the LEDs to be returned to the input supply (“buck-boost mode”) instead of being limited to only SEPIC solutions.

The LT3003 is ideal for high power LED driver applications such as TFT LCD backlighting and heads-up displays. Additional overtemperature outputs allow appropriate system management for increased reliability.

The LT3003 is available in a small 10-pin MSE package.

特点 3% LED Current Matching Up to 350mA Continuous Current per LED String Up to 3000:1 True Color PWMTM Dimming Range PWM Input Disconnects LED Strings Can Operate in Buck, Boost and Buck-Boost Modes Wide Input Range: 3V to 40V Overtemperature Outputs Works with LT1618, LT3477, LT3474, LT3475, LT3476, LTC3783 Thermally Enhanced 10-Pin MSOP Package 典型应用

应用 High Power LED Ballaster Automotive Lighting Video Cameras TFT LCD Backlighting 封装信息

演示电路板