Suntsu’s voltage supervisor IC catalog covers a broad selection of PMIC supervisor chips for monitoring supply rails, generating system resets, and protecting against brownout and undervoltage faults. These devices are essential in embedded systems, industrial controllers, automotive electronics, and battery-powered applications. Browse our in-stock catalog or contact our team to find the right part.
Voltage Supervisor ICs
Total Products: 2
| Image | Data Sheet | Part Number | Manufacturer | Description | Category | Device Package | Voltage | Operating Temp | Additional Specifications | Qty | Get A Quote |
|---|---|---|---|---|---|---|---|---|---|---|---|
 | DS1232D | TAEJIN Technology | SUPERVISOR 1 CHANNEL | Supervisors | SOP-8 | N/A | -10°C ~ 70°C (TA) | Operating Temperature: -10°C ~ 70°C (TA) Supplier Device Package: SOP-8 Packaging: Tape & Reel | 179 | ||
 | DS1232N | TAEJIN Technology | SUPERVISOR 1 CHANNEL | Supervisors | DIP-8 | N/A | -10°C ~ 70°C (TA) | Operating Temperature: -10°C ~ 70°C (TA) Supplier Device Package: DIP-8 Packaging: Tube | 215 |
About Voltage Supervisor ICs
A voltage supervisor IC, also referred to as a voltage detector or reset IC, is a power management device that continuously monitors one or more supply rails and asserts a reset or interrupt signal when the voltage falls outside a defined threshold. By ensuring that processors and digital logic operate only under stable supply conditions, these ICs prevent erratic behavior during power-up sequencing, brownout events, and uncontrolled shutdowns.
Standard supervisor features include programmable reset thresholds, watchdog timers, manual reset inputs, and configurable reset timeout delays. More advanced devices support multi-rail monitoring, selectable output polarity, and adjustable hysteresis for noise-sensitive environments.
Voltage supervisor ICs are specified across a wide range of industries, including industrial automation, automotive electronics, medical devices, telecommunications equipment, and consumer embedded systems. They are a core component of any well-designed power management architecture, working alongside LDO regulators, DC-DC controllers, and specialized power management ICs to form a complete power subsystem.
Types of Supervisors We Offer
Single-Rail Voltage Supervisors
Single-rail supervisor chips monitor one supply voltage and assert a reset signal when the monitored rail drops below a fixed or adjustable threshold. These are the most common supervisor configurations and are widely used in microcontroller-based designs, embedded systems, and portable electronics, where one primary supply requires oversight. Their simplicity and effectiveness make them a popular choice for ensuring system reliability.
Multi-Rail Voltage Supervisors
Multi-rail supervisors monitor two or more supply voltages simultaneously, asserting a unified or per-rail fault signal when any monitored rail goes out of range. These devices simplify board-level power sequencing in complex systems with multiple supply domains, reducing the need for discrete supervisor chains. They are frequently paired with voltage reference ICs for precision threshold calibration.
Supervisors with Watchdog Timers
These PMIC supervisor chips integrate a watchdog timer that requires periodic toggling by the host processor. If the processor fails to service the watchdog within the defined window, the supervisor asserts a reset, providing an additional layer of fault protection in safety-critical and unattended systems.
Adjustable Threshold Supervisors
Adjustable supervisor ICs allow engineers to set custom undervoltage thresholds via external resistor dividers, offering flexibility across different supply voltages and application requirements. These are well-suited for designs using non-standard supply rails or requiring tight reset window control alongside specialized regulators.
How to Choose the Right Supervisor
Selecting the correct voltage supervisor IC depends on your system’s power architecture and fault tolerance requirements:
Number of rails to monitor: Determine how many supply voltages require supervision. Single-rail devices are simpler and lower cost; multi-rail supervisors reduce component count when multiple supplies must be tracked simultaneously.
Reset threshold and accuracy: Identify the required undervoltage threshold for each monitored rail and confirm the supervisor’s threshold accuracy and hysteresis meet your design’s tolerance budget. Adjustable devices offer greater flexibility across supply voltages.
Output configuration: Supervisor outputs are available in active-high, active-low, push-pull, and open-drain configurations. Match the output type to your processor’s reset input polarity and drive requirements.
Watchdog timer requirement: If your application requires processor fault detection in addition to supply monitoring, select a supervisor with an integrated watchdog timer. Confirm the watchdog timeout window is compatible with your firmware’s service interval.
Operating temperature and qualification grade: Industrial and automotive applications require supervisor ICs rated for extended temperature ranges. Verify the device’s qualification level and temperature grade against your deployment environment before finalizing selection.
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