Semtech's SX9510 touch sensor controller includes 8-channels of LED drivers, a buzzer, IR detector and analog outputs designed ideally for TV applications. The SX9510 also offers proximity sensing.

The SX9510 operates autonomously using a set of programmable button sensitivities and thresholds, plus LED intensities and breathing functions with no external I²C communication required.

All devices feature three individual LED driver engines for advanced LED lighting control. On the SX9510, a proximity detection illuminates all LEDs to a pre-programmed intensity. Touching a button will enable the corresponding LED to a preprogrammed mode such as intensity, blinking or breathing.

Whenever the capacitive value changes from either a proximity detection or finger touch/release, the controller informs the host processor through the analog output(s) or an open drain interrupt and an I²C register read.

The SX9510 does not require additional external dynamic programming support or setting of parameters and will adapt to humidity and temperature changes to guarantee correct touch/no touch information.

Applications

• LCD TVs, monitors
• White gods
• Consumer products, instrumentation, automotive
• Mechanical button replacement