Log in or register
to manage email notifications about changes to datasheets or PCNs for this part.
The PT8A264X is a CMOS LSI chip designed for use in automatic PIR lamp control. It can operate with a 2-wire configuration for triac applications or with a 3-wire configuration for relay applications. The chip is equipped with operational amplifiers, a comparator, timer, a zero crossing detector, control circuit, a voltage regulator, a system oscillator, and an output timing oscillator.
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 is turned on with an adjustable duration. The PT8A264X offers three operating modes (ON, AUTO, OFF) which can be set through the MODE pin. While the chip is working in the AUTO mode the user can override it and switch to the quickly install mode, or manual ON mode, or return to the AUTO mode by switching the power switch.
Operating voltage: 5V (Typ.)
Average supply current: 120μA (Typ.)
2 stage op-amp for filter.
Build-in noise rejection circuit.
Adjustable output duration
ON/AUTO/OFF selectable by MODE pin
Apply to AC 220V/50Hz and 110V/60Hz.
Auto-reset if the ZC signal disappears over 3 seconds
Output pulse (PT8A2641/5/7) to drive triac or output level (PT8A2642/6/8) to drive relay.
Environmental Compliance Legend: LFF: Pb-Free Finish and RoHS 5/6 TLFP: Totally Pb-Free Product and RoHS 6/6 LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free GREEN: Halogen-free and RoHS compliant RoHS: RoHS compliant but NOT halogen-free