Collection: Supervisors - PMIC Voltage Monitoring & Watchdog ICs for Embedded Systems

High-Reliability PMIC Supervisors for Voltage Monitoring & System Control

PMIC Supervisors (voltage supervisors, reset ICs, watchdog timers) are critical power management integrated circuits that monitor voltage rails, detect power failures, generate system resets, and ensure reliable startup/shutdown sequencing in embedded systems. These precision monitoring ICs protect microcontrollers, FPGAs, DSPs, and SoCs from brownout conditions, power supply glitches, and system lockups across automotive, industrial, medical, and aerospace applications.

Key Supervisor IC Functions & Features

• Voltage Monitoring: Single-rail, dual-rail, quad-rail, and multi-voltage supervision with programmable thresholds
• Reset Generation: Power-on reset (POR), manual reset, watchdog reset with adjustable timeout periods
• Watchdog Timer: Independent watchdog circuits to detect and recover from software failures
• Battery Backup Management: Automatic switchover between primary and backup power sources
• Power Sequencing: Controlled power-up/power-down timing for multi-rail systems
• Low Power Operation: Ultra-low quiescent current (nA to μA range) for battery-powered devices
• Precision Thresholds: ±1% to ±3% accuracy across temperature and voltage ranges

Supervisor IC Types & Architectures

Our supervisor portfolio includes simple voltage detectors (single threshold), microprocessor supervisors (reset + watchdog), multi-voltage supervisors (2-8 rail monitoring), battery backup controllers, and power sequencers with programmable timing. Available in SOT-23, SC-70, TSSOP, DFN, and WLCSP packages for space-constrained designs.

Critical Applications Requiring Supervisors

• Automotive Electronics: ECU reset management, ADAS safety monitoring, battery management systems (BMS)
• Industrial Automation: PLC power supervision, motor drive protection, fieldbus node monitoring
• Medical Devices: Patient monitor reliability, infusion pump safety, diagnostic equipment uptime
• Aerospace & Defense: Avionics reset circuits, satellite power management, ruggedized system control
• IoT & Wireless: Battery-powered sensor nodes, edge computing devices, smart meter reliability
• Telecommunications: Base station power monitoring, network equipment protection, server watchdog

Selection Criteria for Supervisor ICs

When selecting voltage supervisors, evaluate monitored voltage range (0.4V to 36V+), reset threshold accuracy (±1% to ±5%), reset timeout period (100ms to 1600ms), watchdog timeout options (1.6ms to 102s), number of monitored rails (1 to 8+), output type (open-drain, push-pull, active-high/low), operating temperature range (commercial, industrial, automotive, military grades), and package footprint constraints.

Why Choose HQICKEY for Supervisor Components

Our supervisor IC inventory spans industry-leading manufacturers including Texas Instruments, Analog Devices (ADI/Maxim), STMicroelectronics, ON Semiconductor, Microchip, Renesas, and Diodes Incorporated. We stock automotive-qualified (AEC-Q100) supervisors, extended-temperature (-40°C to +125°C) variants, and high-reliability grades with full traceability, quality certifications, and technical design support.

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