TPS859 TOSHIBA Photo IC Silicon Epitaxial Planar TPS859 ○ Flat Panel Displays ○ Mobile Phones ○ Notebook PCs, PDAs ○ Video cameras, Digital Still Cameras ○ Other Equipment Requiring Luminosity Adjustment The TPS859 is an ultra-compact surface-mount photo-IC for illuminance sensors which incorporates a photodiode and current amp circuit in a single chip.The sensitivity is superior to that of a phototransistor, and exhibits little variation. It has spectral sensitivity closer to luminous efficien.