The RE46C194 is a low power, low voltage CMOS photoelectric type smoke detector ASIC. With minimal external components, this circuit will provide all the required functions and features for a photoelectric smoke detector.? Programmable setup, calibration and feature selection are the key to reduced component count and reduced manufacturing costs.? The low average operating current of the RE46C194 allows smoke detectors to achieve 10-year operation with lithium ion batteries.? The boost regulator ins