PT8A2645WE

Description：PIR CONTROLLER SO-16
Series：-

SKU:78260db97936 Category: Sensor and Detector Interfaces Brand: Diodes Incorporated

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Product introduction

PT8A2645WE is listed in the Sensor And Detector Interfaces range at ChipApex. The manufacturer field lists Diodes Incorporated. Its product description is PIR CONTROLLER SO-16. Review the specifications below when checking this part for your BOM.

Sensor And Detector Interfaces specifications for PT8A2645WE

Description：PIR CONTROLLER SO-16
Series：-
Mfr：Diodes Incorporated
Package：Tube
Type：Infrared (IR)
Input Type：-
Output Type：-
Current - Supply：120 µA
Operating Temperature：-20°C ~ 70°C
Mounting Type：Surface Mount
Package / Case：16-SOIC (0.154", 3.90mm Width)
Supplier Device Package：16-SOIC
Grade：-
Qualification：-

Sensor And Detector Interfaces datasheet and documents for PT8A2645WE

PT8A2645WE

Sensor And Detector Interfaces Overview

The PT8A2645WE is a CMOS LSI chip designed for automatic PIR lamp control, operating at a typical voltage of 5V with an average supply current of 120µA. It features a two-stage operational amplifier for filtering and a built-in noise rejection circuit. The device supports AC 220V/50Hz and 110V/60Hz applications, providing pulse outputs to drive TRIACs. Key electrical parameters include a system oscillator frequency of 16KHz (typical), a regulator output voltage of 3.6V, and a power supply current range of 120µA to 200µA. It includes adjustable output duration via external RC components and operates within a temperature range of -20°C to 70°C.

Sensor And Detector Interfaces Feature Summary

Supports ON, AUTO, and OFF operating modes selectable via the MODE pin
Includes override function allowing manual switching between modes
Features auto-reset capability if zero-crossing signal disappears for over 3 seconds
Provides quick check mode for installation verification

Sensor And Detector Interfaces Applications

Automatic PIR lamp control systems
Two-wire configuration for TRIAC applications
Three-wire configuration for relay applications

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering suffix 'W' corresponds to the 16-Pin SOIC package as documented in the official datasheet. Confirm that the component is lead-free and green compliant based on the 'E' designation. Ensure compatibility with the intended AC line voltage and frequency requirements before procurement.

Sensor And Detector Interfaces Selection Notes

Select this model when a pulse output suitable for driving TRIACs is required, distinguishing it from variants offering level outputs for relays. Consider the need for external RC components to set the system oscillator frequency and output timing duration. Verify that the operating environment falls within the specified temperature range and voltage limits.

Sensor And Detector Interfaces Part Context

The PT8A2645WE belongs to the PT8A264X series of mixed-signal CMOS LSI chips manufactured by Diodes Incorporated (formerly Pericom). This family is specifically engineered for motion-sensing lighting applications, integrating analog front-end processing with digital control logic to manage load switching based on infrared detection.