Diodes Menu Close
Back to Passive Infrared

PT8A2648

PIR Sensor IC - Relay Driver

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.

Product Description

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.

Features

  • Operating voltage: 5V (Typ.)
  • Average supply current: 120μA (Typ.)
  • 2 stage op-amp for filter.
  • Build-in noise rejection circuit.
  • On-chip regulator.
  • Adjustable output duration
  • Override function.
  • 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.
  • CDS to enable/disable output.
  • 40 second warm-up.
  • Quick check mode for installation.

Product Specifications

Product Parameters

Driver Type Relay

Related Content

Packages

Applications

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

Request Documents
Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
Contact Sales
Request Samples
Qty. Carrier
PT8A2648PE Active PDIP-16 ROHS 25 TUBE Contact Sales Request Sample
PT8A2648WE Active SO-16 GREEN 50 TUBE Contact Sales Request Sample
PT8A2648WEX Active SO-16 TPGP 2500 T&R

PT8A2648WEX

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Future Electronics - Asia 47500 12/5/2021 Singapore Contact Sales
Request Sample

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

FAQs

Related Application FAQs