PT8A2611PE

Sensor And Detector Interfaces Overview

The PT8A2611PE is a low-power mixed-signal CMOS LSI designed for automatic lamp control using a PIR sensor. It operates at 5V with a standby current of 80µA and features an on-chip regulator. The device provides a pulse output for TRIAC drive, synchronous operation with AC 220V/50Hz or 110V/60Hz, and adjustable output duration via external RC components. It includes a 40-second warm-up period, CDS input for day/night detection, and selectable ON/AUTO/OFF modes.

Sensor And Detector Interfaces Feature Summary

• Built-in noise rejection circuit and two-stage operational amplifier filter
• Synchronous operation with standard AC power line frequencies
• Selectable operating modes including override functionality
• Internal voltage regulator for stable operation across temperature ranges

Sensor And Detector Interfaces Applications

• Energy-saving auto-switches in gardens, kitchens, bathrooms, corridors, storage areas, or yards
• Automatic lighting systems in meeting rooms

Sensor And Detector Interfaces Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and tape/reel configuration. Confirm RoHS compliance status and check for any recent product discontinuance notices from Diodes Incorporated before finalizing procurement plans.

Sensor And Detector Interfaces Selection Notes

Select this component for applications requiring direct TRIAC driving without additional level shifting. Ensure the design accommodates the 40-second initial warm-up period and utilizes the MODE pin for desired operational logic. Verify that the external RC network meets the required timing specifications for the target application.

Sensor And Detector Interfaces Part Context

This part belongs to the PT8A2611/2621 series of PIR sensor light switch controllers manufactured by Diodes Incorporated (formerly Pericom). It is specifically differentiated from the PT8A2621 by its pulse output capability for TRIACs rather than a level output for relays.

Sensor And Detector Interfaces Replacement Considerations

PT8A2621PE: Similar controller but outputs a level signal for relay drive instead of a pulse for TRIAC drive.