The CN809M with PMIC - Supervisors SOT23-3 RoHS is a product from Consonance, a leading semiconductor manufacturer based out of China. The component is a 3-pin, low-cost supervisor designed to monitor the power supplies of TTL and CMOS microcontroller systems. It contains an acceptance window for power-on reset (POR), and a brown-out reset (BOR) detection circuit. The chip is packaged in SOT-23 for board space saving. It is an RoHS compliant product, meaning it does not contain hazardous chemicals or materials such as lead.