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
典型应用
描述
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.