A PMIC Supervisors is designed to monitor and/or control voltage rails within a circuit with the ability to interface with a microcontroller to maintain certain power limits. The types of Supervisors are Battery Back-up Circuit, Monitor, Multi-Voltage Supervisor, Power Supply Monitor, Regulator/Supervisor, Reset Timer, Sequencer, Simple Reset/Power-On Reset, Smart On/Off Controller, System Manager, Voltage Detector, and Watchdog Circuit.