Freescale RS08KA高亮LED解决方案

Freescale公司的MC9RS08KA2系列微控制器是超低成本低引脚数器件，特别适合家用电器，玩具和小型设备的应用。创新的高亮LED解决方案在低成本应用中迅速增长，但是低端高亮LED解决方案需要高级的系统控制和大恒流电流来维持色彩完整性和高的亮度输出。本文介绍采用MC9RS08KA2的主要性能，以及用MC9RS08KA2控制的高亮LED解决方案的电路图。

Innovative HBLED solutions are rapidly gaining popularity in low-cost applications
that require an extremely cost-effective bill-of-materials. However, low-end HBLED
applications still require a high level of system control as well as high constant-current to
maintain color integrity and high light output.
Freescale’s general-purpose ultra-low-end KA2 8-bit MCU offers an economical solution for this application. The on-chip analog comparator is designed to provide an accurate current measurement, which allows feedback control to maintain a constant level in the LED forward current.


MC9RS08KA2 Controlled High-Brightness LED


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