Simple Ambient Light Sensor Controls White LED Driver

Focus:

Ambient light sensor based on photodiode and pseudo logarithmic amplifier provides brightness control for white LED backlights.

What you’ll learn:

• How to control brightness of LEDs as a function of ambient light
• How to control LED drive current using an ambient light sensor

Notes:

ED's Ideas For Design

View the Source

Author & Publication:

Sundar Sundararaj, applications engineer, Integration Associates Inc., Mountain View, Calif., Electronic Design, Sep 25 2008

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