PT8A2647 Overview
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 parator, timer, a zero crossing detector, control circuit, a voltage regulator, a system oscillator, and an output timing oscillator.
PT8A2647 Key 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