Description
The TSL2671 family of devices provides a complete proximity detection system and digital interface logic in a single 6-pin package. The device includes a digital proximity sensor with integrated LED driver for the required external IR LED. The proximity function offers a wide range of performance, with four programmable LED drive currents and a pulse repetition range of 1 to 32 pulses. The proximity detection circuitry compensates for ambient light, allowing it to operate in environments ranging from bright sunlight to dark rooms. This wide dynamic range also allows operation in short-distance detection applications behind dark glass, such as cell phones. An internal state machine provides the ability to put the device into a low-power mode for very low average power consumption.

Features
● Proximity Detection with an Integrated LED Driver in a Single Device
● Proximity Detection
   − Programmable Number of IR Pulses
   − Programmable Current Sink for the IR
      LED — No Limiting Resistor Needed
   − Programmable Interrupt Function with
      Upper and Lower Threshold
   − Covers a 2000:1 Dynamic Range
● Programmable Wait Timer
   − Programmable from 2.72 ms
      to > 8 Seconds
   − Wait State — 65 A Typical Current
● I2C Interface Compatible
   − Up to 400 kHz (I2C Fast Mode)
   − Dedicated Interrupt Pin
● Small 2 mm  2 mm ODFN Package
● Sleep Mode — 2.5 A Typical Current

Applications
● Cell Phone Touch Screen Disable
● Notebook/Monitor Security
● Automatic Speakerphone Enable
● Automatic Menu Popup