PT8A2612

Data Sheet PT8A2612 PIR Sensor Light Switch Controller ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Features General Description The PT8A2612 is a CMOS LSI chip based on 260 base designed for use in automatic PIR lamp control. It can operate with a 2-wire configuration for triac applications with dimmer function or 3-wire configuration for RELAY application. Its PIR sensor detects infrared power variations induced by the motion of a human body and transforms it to a voltage variation. If the PIR output voltage variation conforms to the criteria (refer to the functional description), the lamp can softly turn on as the below order, 25% lighteness, 50%, 75% 100% as well as turn off as reverse order with an adjustable duration. The PT8A2612 offers three operating modes (TEST, AUTO, disable dimmer) which can be set through the MODE pin. While the chip is working in the AUTO mode the user can override it and switches to the quickly check mode, or manual ON mode, or return to the AUTO mode by switching the power switch. 2-stage operational amplifier as filter Built-in noise rejection circuit On-chip regulator Override function by twice turn-off and -on of AC power 4s soft start and 1 minutes soft stop by three steps with 5 minutes hold time at fOSCD = 1Hz 4...