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Supervisory Circuits are in stock with same-day shipping at Mouser from leading manufacturers. Mouser is an authorized distributor for many supervisory circuit manufacturers including Microchip, STMicroelectronics, Texas Instruments & more.

Supervisory circuits are integrated circuits designed to monitor power supply conditions and ensure electronic systems operate reliably during startup, shutdown, and fault events. They continuously oversee voltage levels and timing conditions, generating control signals such as reset outputs when supply voltages fall outside acceptable limits. These devices help improve system stability, prevent data corruption, and protect processors, memory devices, and other critical components from improper operation.

Types: The most common supervisory circuit types include voltage supervisors, reset ICs, watchdog timer supervisors, power-on reset devices, multi-voltage supervisors, battery monitoring supervisors, window supervisors, and programmable supervisory circuits, each optimized for specific monitoring, timing, and protection requirements.

Applications: Supervisory circuits are widely used in microcontroller-based systems, industrial automation equipment, communication devices, medical electronics, automotive systems, embedded computing platforms, networking equipment, and power management applications to monitor supply conditions and maintain reliable system operation.

Selection requirements: To choose supervisory circuits, evaluate monitored voltage thresholds, reset timeout period, watchdog timer functionality, supply voltage range, power consumption, output configuration, monitoring accuracy, package type, and suitability for the intended electrical and environmental conditions.

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Please view our large selection of supervisory circuits below.