General Description
The PT8A2611 and PT8A2621 are low power mixed signal CMOS LSI designed for the automatic lamp control using PIR sensor as motion detector.

FEATUREs
• 2-stage operational amplifier as filter
• Built-in noise rejection circuit
• On-chip regulator
• Override function
• Synchronous with AC 220V/50Hz and 110V/60Hz
• Pulse output (PT8A2611) for TRIAC drive or level output (PT8A2621) for relay drive
• CDS to enable/disable output
• Adjustable output on time duration
• ON/AUTO/OFF selectable by MODE pin
• Auto-reset if the ZC signal disappears over 3 seconds
• 40 seconds warm-up
• Quick check mode for initial installation
• Operating voltage: 5V
• Stand-by current: 80µA
• Package: 16-pin DIP and 16-pin SOP

APPLICATIONs
• Energy saving auto-switch in Garden, kitchen, bathroom, corridor, storage or yard
• Auto light in meeting room