Si1145 - Silicon Laboratories

Si1145 PROXIMITY/UV/AMBIENT LIGHT SENSOR

 Valve controls  Smoke detectors  Touchless switches  Touchless sliders  Occupancy sensors  Consumer electronics  Industrial automation  Display backlighting control  Photo-interrupters The Si1145/46/47 is a low-power, reflectance-based, infrared proximity, ultraviolet (UV) index, and ambient light sensor with I2C digital interface and programmabl.

Features

 Integrated infrared proximity detector
 Integrated UV index sensor
Proximity detection adjustable from
 Industry's lowest power consumption under 1 cm to over 50 cm
1.71 to 3.6 V supply voltage
Three independent LED drivers
9 µA average current (LED pulsed
15 current settings from 5.6 mA to 25.6 µs every 800 ms at 180 mA 360 mA for each LED driver plus 3 µA Si114x supply)
25.6 µs LED driver pulse width
< 500 nA standby current
50 cm proximity range with single
Internal and external wake support pulse (<3 klx)
Built-in voltage supply monitor and
15 cm .