A Simple Implementation of LCD Brightness Control Using the MAX44009 Ambient-Light Sensor

By: Ilya Veygman

Abstract: This application note describes an implementation using the MAX44009 ambient-light sensor for backlight control in portable applications such as smartphones and tablet computers. Two different control schemes are presented for adjusting backlight brightness. The application note provides additional tips for improving performance, as well as sample code to implement algorithms discussed in the article.