PT8A2647PE

Sensor And Detector Interfaces Overview

The PT8A2647PE is a CMOS LSI chip designed for automatic PIR lamp control, specifically configured to drive TRIAC loads. It operates at a typical supply voltage of 5V with an average current consumption of 120µA. The device integrates a two-stage operational amplifier, a comparator, timer, zero-crossing detector, and internal voltage regulator. It supports AC 220V/50Hz and 110V/60Hz systems, featuring adjustable output duration via external RC components and selectable operating modes (ON/AUTO/OFF) through the MODE pin.

Sensor And Detector Interfaces Feature Summary

• Integrated two-stage op-amp and noise rejection circuit for reliable PIR signal processing
• Selectable operating modes including ON, AUTO, and OFF states controlled by the MODE pin
• Built-in zero-crossing detection for synchronized TRIAC triggering
• Automatic warm-up period and override functionality for installation testing

Sensor And Detector Interfaces Applications

• Automatic PIR lamp control systems
• Two-wire configuration TRIAC applications
• Lighting control for AC 220V/50Hz and 110V/60Hz power lines

Sensor And Detector Interfaces Procurement Notes

Verify component authenticity against Diodes Incorporated or Pericom Semiconductor specifications. Confirm package type matches the required 16-pin DIP form factor. Ensure ordering suffixes align with lead-free requirements. Cross-reference datasheet revision dates to validate feature compatibility before integration into production designs.

Sensor And Detector Interfaces Selection Notes

Select this model when a TRIAC output interface is required for lighting control applications. The PT8A2647 variant provides pulse outputs suitable for TRIAC driving, distinguishing it from relay-output versions. Consider the 16-pin DIP package for through-hole mounting needs. Evaluate system frequency requirements against the external OSCS oscillator settings for proper timing operation.

Sensor And Detector Interfaces Part Context

The PT8A2647PE belongs to the PT8A264X series of PIR sensor light switch controllers manufactured by Pericom Semiconductor Corporation, now part of Diodes Incorporated. This family includes variants with different output configurations, such as TRIAC drivers (PT8A2641/5/7) and relay drivers (PT8A2642/6/8). The PT8A2647PE specifically targets applications requiring direct TRIAC control in automatic lighting scenarios.

Sensor And Detector Interfaces Replacement Considerations

Direct substitutes within the same series include PT8A2641PE and PT8A2645PE, which share identical TRIAC output characteristics and pinouts. Verify that any replacement maintains the specific output pulse configuration required for the target TRIAC driver circuit.