LT3003

• Product Introduction

LT3003 three-channel LED Ballaster and PWM

peculiarity

• 3% LED Current Matching
• Up to 350mA Continuous Current per LED String
• Up to 3000:1 True Color PWMTM Dimming Range Up to 3000:1 True Color PWMTM Dimming Range
• PWM Input Disconnects LED Strings PWM Input Disconnects LED Strings
• Can Operate in Buck, Boost and Buck-Boost Modes can work in buck, boost and buck-boost modes
• Wide Input Range: 3V to 40V Wide Input Voltage Range: 3V to 40V
• Overtemperature Outputs
• Works with LT1618, LT3477, LT3474, LT3475, LT3476, LTC3783 LT1618, LT3477, LT3474, LT3475, LT3476, LTC3783
• Thermally Enhanced 10-Pin MSOP Package
• Description The LT3003 drives three separate strings of LEDs up to 350mA/channel with 3% accurate current matching, resulting in uniform LED brightness and intensity. The LT3003 drives 3 independent LED strings with 350mA/channel current matching for accurate and consistent LED brightness and intensity. This approach is superior to conventional methods of running three separate channels with external ballast resistors requiring expensive factory This method is superior to traditional methods and requires expensive factory calibration with an external ballast resistor to run three independent channels. The LT3003 operates in boost mode, “buck mode” and “buck-boost mode”. 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. Logic level signals for PWM pins in all modes without the need for external level conversion circuitry can achieve a true color PWM dimming ratio of up to 3000:1. 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 For applications where the output voltage is above and below the LED string output voltage and the input supply, the LT3003 allows the LEDs to return to the input power supply (buck-boost mode) rather than being limited to SEPIC solutions only. The LT3003 is ideal for high power LED driver applications such as TFT LCD backlighting and heads-up displays. The LT3003 is ideal for high-power LED driver applications such as TFT LCD backlighting and head-up displays. Additional overtemperature outputs allow appropriate system management for increased reliability. The LT3003 is available in a small 10-pin MSE package. The LT3003 is a small 10-pin MSE package. apply High Power LED Ballaster High Power Indicator Ballaster Automotive Lighting Video Cameras TFT LCD Backlighting TFT LCD Display Backlight