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 Prix 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
N° de stock RS 145-6389
Référence fabricantTPS3813K33DBVT
1,314 €
Each (On a Reel of 250)
Unité
- 1 Yes - - - - Open Drain - Surface Mount SOT-23 6 2.9 x 1.6 x 1.15mm 3V
N° de stock RS 906-3316
Référence fabricantLTC4365ITS8#TRMPBF
3,745 €
Each (In a Pack of 4)
Unité
Overvoltage Monitor, Undervoltage Monitor 3 - - - - - - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm -
N° de stock RS 578-916
Référence fabricantSTM6822TWY6F
0,762 €
Each (In a Pack of 5)
Unité
- 1 Yes Yes - - - Active Low, Open Drain 280ms Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 3.15V
N° de stock RS 178-8940
Référence fabricantLTC4365ITS8#TRMPBF
2,171 €
Each (On a Reel of 2500)
Unité
Overvoltage Monitor, Undervoltage Monitor 3 - - - - - - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm -
N° de stock RS 709-8114
Référence fabricantADM708RARZ
0,892 €
Each (In a Pack of 5)
Unité
- 1 - Yes - Yes - Active High, Active Low, Push-Pull 280ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.5V
N° de stock RS 168-6338
Référence fabricantSTM6322SWY6F
0,24 €
Each (On a Reel of 3000)
Unité
- 1 - Yes - - - Active High, Active Low, Open Drain, Push-Pull 280ms Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 3V
N° de stock RS 165-3366
Référence fabricantMCP1320T-29LE/OT
MarqueMicrochip
0,453 €
Each (On a Reel of 3000)
Unité
- 1 Yes Yes - - - Active Low, Open Drain 2240ms Surface Mount SOT-23 5 3.1 x 1.8 x 1.3mm 2.97V
N° de stock RS 806-0779
Référence fabricantNCP302HSN40T1G
0,121 €
Each (On a Tape of 25)
Unité
Voltage Detector 1 - - 4.08V - 3.92V - - Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V
N° de stock RS 165-4053
Référence fabricantMIC6315-29D4UY-TR
MarqueMicrochip
0,254 €
Each (On a Reel of 3000)
Unité
- 1 - Yes - - - Active Low, Open Drain 2500ms Surface Mount SOT-143 4 2.92 x 1.3 x 0.9mm -
N° de stock RS 686-4784
Référence fabricantSTM1061N34WX6F
0,399 €
Each (In a Pack of 25)
Unité
Low Power Voltage Detector 1 - - 3.468V - 3.332V - - Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm -
N° de stock RS 379-2140
Référence fabricantMCP101T-475I/TT
MarqueMicrochip
0,328 €
Each (In a Pack of 5)
Unité
- 1 - - - - - Active High, Push-Pull - Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 4.75V
N° de stock RS 823-0173
Référence fabricantLTC1696ES6#TRMPBF
3,625 €
Each (In a Pack of 2)
Unité
Overvoltage Protection 1 - - 0.95V - 0.78V - - Surface Mount TSOT-23 6 3.1 x 1.75 x 0.9mm 24V
N° de stock RS 808-0158
Référence fabricantNCP303LSN30T1G
0,285 €
Each (On a Tape of 100)
Unité
Voltage Monitor 1 - - 4.4V - 2.59V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
N° de stock RS 412-412
Référence fabricantADM690AARNZ
3,77 €
Each
Unité
- 1 Yes - - Yes - Active Low, Push-Pull 280ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.75V
N° de stock RS 922-2713
Référence fabricantTPS3805H33DCKR
0,424 €
Each (On a Reel of 3000)
Unité
Voltage Detector 2 - - 3.096V - 3.004V - - Surface Mount SC-70 5 2 x 1.25 x 0.9mm 6.3V
N° de stock RS 662-4205
Référence fabricantTPS3805H33DCKR
0,984 €
Each (In a Pack of 5)
Unité
Voltage Detector 2 - - 3.096V - 3.004V - - Surface Mount SC-70 5 2 x 1.25 x 0.9mm 6.3V
N° de stock RS 121-9204
Référence fabricantTPS3809K33DBVT
0,412 €
Each (On a Reel of 250)
Unité
Supply 1 - - 2.99V - 2.87V - - Surface Mount SOT-23 3 2.9 x 1.6 x 1.15mm -
N° de stock RS 162-9514
Référence fabricantNCP301LSN27T1G
0,142 €
Each (On a Reel of 3000)
Unité
Voltage Detector 1 No - 2.754V - 2.646V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
N° de stock RS 163-0682
Référence fabricantNCP303LSN30T1G
0,152 €
Each (On a Reel of 3000)
Unité
Voltage Monitor 1 - - 4.4V - 2.59V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
N° de stock RS 168-6323
Référence fabricantSTM809SWX6F
0,11 €
Each (On a Reel of 3000)
Unité
- 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 3V