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Power Management

System Supervisors and Voltage Detectors

System Supervisor and Voltage Detectors products monitor system voltages to eliminate problems during operation. On power-down, the supervisor monitors the power supply voltage and resets the system if the voltage falls below a predetermined level. On power-up, the supervisor holds the system in reset until the voltage has stabilized.

  • Monitors systems without a MCU. Ex. FPGA, PLDs, power supplies, etc.
  • Can reset all or part of a system
  • Localized shutdown making it faster and less susceptible to noise
  • Meets system safety regulations requiring external fail safe
  • More customizable and accurate voltage trip points and reset output delay
  • Supervisor options with Manual Resets & Watchdog Timers simplify firmware, add reliability and are very easy to implement

Key Features

  • Watchdog Timer
    • Signal required from within MCU (WDI) tWD or RST driven low
    • Designed to Detect faulty program execution
  • Voltage trip point
    • Standard trip voltages available on all parts
    • Custom trip voltages available on some parts
  • Reset Delay
    • Different available options for a reset delay
    • Some parts have custom options available
  • WDT Period
    • Parts with watchdog timers have different tWD (period)
  • Low power (Typ < 1uA)
    • Typically battery applications
    • Power sensitive with same reliability of a supervisor
  • Output type
    • Push-Pull or Open-Drain
    • Active Low or High
    • Internal or external pull-up resistor (Open-Drain only)
  • Fast and accurate analog circuit simulations to help accelerate your hardware designs.
  • Choose from SPICE or piecewise linear SIMPLIS models, for accurate results in fast simulations
  • Downloadable simulation tool runs locally on your own PC without requiring an internet connection