Push button dimmer M2005A

The M2005A integrated circuit combines all required functions for a single chip PIR controller circuit for use in security lights and similar applications. The device contains an on-chip rectifier and regulator to allow direct connection to the AC mains supply, via a current limiting resistor. Sensitivity, on-time, light brightness and the fade time are digitally adjustable by means of push buttons. The PIRIN input signal is directly converted to a digital signal. All further signal processing and functions are performed digitally, thereby eliminating drift, associated with most analog PIR controllers.