Atmel MSL2166 16路白光和RGB LED驱动解决方案
Atmel公司的MSL2164/MSL2166是小型大功率LED串驱动器,每串电流为350mA,电流匹配优于±0.8%,具有12位PWM串调光,正向,中心,反向和逆向PWM模式,快速20MHz SPI支持多达8个器件/总线,8位自适应功率修正最大化效率,主要用在电视和台式监视器,医疗和工业设备,汽车音/视频显示,建筑物照明等.本文介绍了MSL2164/MSL2166主要特性,方框图和典型应用电路图.
16-string, White and RGB LED Drivers with Adaptive Configuration, EEPROM, and SPI/I2C/SMBus Serial Interface
The MSL2164/MSL2166 compact, high-power LED string drivers use external current control MOSFETs to sink up to 350mA per string, with matching better than ±0.8%. The MSL2164/MSL2166 drive 16 parallel strings of LEDs and offer fault detection and management of open-circuit and short-circuit LEDs.
The MSL2164/MSL2166 feature a 20MHz SPI serial interface. Both devices support video frame-by-frame LED string intensity control for up to eight interconnected devices, allowing active area dimming and phase-shifted PWM outputs. They also include an advanced PWM engine that synchronizes PWM dimming to the video signal supporting forward, center, reverse and inverse PWM modes for reduced motion blur and waterfall noise.
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