GENERAL DESCRIPTION
The MSL3050/MSL3060/MSL3080 multi-channel LED drivers with integrated boost regulator controller offer a complete solution to drive parallel LED strings at up to 40V. The LED current sinks control up to 60mA each for up to 19W of LED power. Parallel connect the current sinks for increased string current. A single resistor sets LED current, with string matching and accuracy within ±3%. The advanced integrated PWM circuitry allows up to 4095:1 dimming, and offers simple PWM dimming control. External PWM dimming is controlled by a signal at the PWM input, which sets both the PWM duty cycle and frequency of the dimming signals. The internal PWM dimming is controlled by registers accessible through the I2C serial interface. The MSL3050/60/80 feature integrated fault detection circuitry that detects and acts upon string open-circuit and LED short circuit faults, boost regulator over-voltage faults, and die overtemperature faults. A proprietary Efficiency Optimizer maintains FEATURES
: sufficient boost regulator output voltage to maintain LED current 2 regulation while minimizing power use.
Atmel
