Voltage Supervisors

Voltage supervisors are integrated circuits (ICs) that monitor or supervise a voltage within an electronic circuit. They are sometimes referred to as voltage monitors or detectors. Voltage supervisors are found in most electronic applications and are used to prevent system failure and ensure correct system power up.


Voltage supervisors have an output signal which is given if the voltage falls outside of the chose parameters. This signal can be used to enable, disable or reset another device. Supervisors are commonly paired with a microprocessor (MPU) or microcontroller (MCU) device, as they often require a specific voltage range. Voltage supervisors can also be used as a fault detector for a sensor.


Types of Voltage Supervisors:


  • CMOS voltage detector

  • Open drain voltage detector

  • Watchdog timer

  • Window detector

  • Back-up battery supervisor

  • Battery monitoring

Things to consider when choosing a voltage supervisor?


  • Reset voltage

  • Supply voltage

  • Number of channels

  • Package type

What are processor supervisors?


Processor Supervisors monitor voltage for microprocessors and microcontrollers (MCUs). It is essential that processor parameters are monitored by supervisors to ensure that these parameter boundaries are not exceeded. Exceeding some parameters can result in failure or even a dangerous result.


One of the primary things that a processor supervisor will monitor is voltage. For example, a supervisory circuit monitor may monitor voltages with a threshold of 1.6V to 5V. If the CPU’s circuit voltage falls outside of these limits, the supervisor would create an output signal, for example, a reset output.


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Description Price Voltage Supervisor Type Number of Supervisors Watchdog Timer Manual Reset Maximum Reset Threshold Voltage Power Fail Detection Minimum Reset Threshold Voltage Output Driver Maximum Reset Active Time Mounting Type Package Type Pin Count Dimensions Maximum Monitored Voltage
RS Stock No. 624-8264
Mfr. Part No.STM1816SWX7F
SGD0.746
Each (In a Pack of 10)
units
- 1 - - - - - Active Low, Open Drain - Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 2.97V
RS Stock No. 168-6360
Mfr. Part No.STM1001LWX6F
SGD0.262
Each (On a Reel of 3000)
units
- 1 - - - - - Active Low, Open Drain 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 4.75V
RS Stock No. 686-1662
Mfr. Part No.STM1001MWX6F
SGD0.779
Each (In a Pack of 25)
units
- 1 - - - - - Active Low, Open Drain 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 4.5V
RS Stock No. 168-6320
Mfr. Part No.STM1816SWX7F
SGD0.295
Each (On a Reel of 3000)
units
- 1 - - - - - Active Low, Open Drain - Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 2.97V
RS Stock No. 686-1671
Mfr. Part No.STM1001LWX6F
SGD0.779
Each (In a Pack of 25)
units
- 1 - - - - - Active Low, Open Drain 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 4.75V
RS Stock No. 168-6359
Mfr. Part No.STM1001MWX6F
SGD0.262
Each (On a Reel of 3000)
units
- 1 - - - - - Active Low, Open Drain 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 4.5V
RS Stock No. 624-8236
Mfr. Part No.STM1001SWX6F
SGD0.779
Each (In a Pack of 10)
units
- 1 - - - - - Active Low, Open Drain 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 3V
RS Stock No. 686-1615
Mfr. Part No.STM811LW16F
SGD0.846
Each (In a Pack of 10)
units
- 1 - Yes - - - Active Low, Push-Pull 280ms Surface Mount SOT-143 4 3.04 x 1.4 x 1.02mm 4.75V
RS Stock No. 624-8365
Mfr. Part No.STM809SWX6F
SGD0.587
Each (In a Pack of 10)
units
- 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 3V
RS Stock No. 578-847
Mfr. Part No.STM1001RWX6F
SGD0.962
Each (In a Pack of 5)
units
- 1 - - - - - Active Low, Open Drain 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 2.7V
RS Stock No. 686-4778
Mfr. Part No.STM1061N25WX6F
SGD0.671
Each (In a Pack of 25)
units
Low Power Voltage Detector 1 - - 2.55V - 2.45V - - Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm -
RS Stock No. 189-2010
Mfr. Part No.STM6321SWY6F
SGD1.234
Each (In a Pack of 10)
units
- 1 Yes - - - - Active High, Active Low, Open Drain, Push-Pull 280ms Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 2.5 V, 3 V, 3.3 V, 5V
RS Stock No. 877-2918
Mfr. Part No.STM6503SEAADG6F
SGD1.11
Each (In a Pack of 10)
units
Voltage Monitor 1 - - 2.998V - 2.85V - - Surface Mount TDFN 8 2.1 x 2.1 x 0.75mm 4.63V
RS Stock No. 189-1875
Mfr. Part No.STM6601CM2DDM6F
SGD1.032
Each (On a Reel of 3000)
units
- 1 - Yes 3.1V - - - - Surface Mount TDFN 12 3 x 2 x 0.75mm -
RS Stock No. 686-1564
Mfr. Part No.STM6823SWY6F
SGD2.00
Each (In a Pack of 5)
units
- 1 Yes Yes - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 3V
RS Stock No. 920-9017
Mfr. Part No.STM811LW16F
SGD0.369
Each (On a Reel of 3000)
units
- 1 - Yes - - - Active Low, Push-Pull 280ms Surface Mount SOT-143 4 3.04 x 1.4 x 1.02mm 4.75V
RS Stock No. 189-1872
Mfr. Part No.STM6321SWY6F
SGD0.647
Each (On a Reel of 3000)
units
- 1 Yes - - - - Active High, Active Low, Open Drain, Push-Pull 280ms Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 2.5 V, 3 V, 3.3 V, 5V
RS Stock No. 168-6355
Mfr. Part No.STM811RW16F
SGD0.369
Each (On a Reel of 3000)
units
- 1 - Yes - - - Active Low, Push-Pull 280ms Surface Mount SOT-143 4 3.04 x 1.4 x 1.02mm 2.7V
RS Stock No. 189-1876
Mfr. Part No.STM6822LWY6FST
SGD1.118
Each (On a Reel of 3000)
units
- 1 Yes Yes 4.746V - 4.514V - - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 2.5 V, 3 V, 3.3 V, 5V
RS Stock No. 168-6353
Mfr. Part No.STM812SW16F
SGD0.369
Each (On a Reel of 3000)
units
- 1 - Yes - - - Active High, Push-Pull 280ms Surface Mount SOT-143 4 3.04 x 1.4 x 1.02mm 3V