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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Omschrijving Prijs 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-stocknr. 168-5841
FabrikantnummerSTM811TW16F
0,169 €
Each (On a Reel of 3000)
Aantal stuks
- 1 - Yes - - - Active Low, Push-Pull 280ms Surface Mount SOT-143 4 3.04 x 1.4 x 1.02mm 3.15V
RS-stocknr. 145-6910
FabrikantnummerTPS3305-33D
1,319 €
Each (In a Tube of 75)
Aantal stuks
Microprocessor Power Supply Supervisor 2 Yes Yes - - - - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm -
RS-stocknr. 155-9282
FabrikantnummerLTC1696ES6#TRMPBF
FabrikantAnalog Devices
2,328 €
Each (On a Reel of 500)
Aantal stuks
Overvoltage Protection 1 - - 0.95V - 0.78V - - Surface Mount TSOT-23 6 3.1 x 1.75 x 0.9mm 24V
RS-stocknr. 922-2713
FabrikantnummerTPS3805H33DCKR
0,452 €
Each (On a Reel of 3000)
Aantal stuks
Voltage Detector 2 - - 3.096V - 3.004V - - Surface Mount SC-70 5 2 x 1.25 x 0.9mm 6.3V
RS-stocknr. 517-2194
FabrikantnummerTPS3305-33D
1,344 €
Each (In a Pack of 5)
Aantal stuks
Microprocessor Power Supply Supervisor 2 Yes Yes - - - - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm -
RS-stocknr. 124-5353
FabrikantnummerNCP302LSN40T1G
FabrikantON Semiconductor
0,11 €
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - - - Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V
RS-stocknr. 379-2140
FabrikantnummerMCP101T-475I/TT
FabrikantMicrochip
0,306 €
Each (In a Pack of 5)
Aantal stuks
- 1 - - - - - Active High, Push-Pull - Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 4.75V
RS-stocknr. 822-6843
FabrikantnummerLTC2917IMS-A1#PBF
FabrikantAnalog Devices
3,012 €
Each (In a Pack of 5)
Aantal stuks
Voltage Monitor 1 Yes - 11.4V - 11.04V - - Surface Mount MSOP 10 3 x 3 x 0.86mm 12V
RS-stocknr. 791-6258
FabrikantnummerNCP301LSN27T1G
FabrikantON Semiconductor
0,355 €
Each (On a Tape of 25)
Aantal stuks
Voltage Detector 1 No - 2.754V - 2.646V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
RS-stocknr. 686-4784
FabrikantnummerSTM1061N34WX6F
0,356 €
Each (In a Pack of 25)
Aantal stuks
Low Power Voltage Detector 1 - - 3.468V - 3.332V - - Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm -
RS-stocknr. 712-2781
FabrikantnummerAPX809-31SAG-7
FabrikantDiodesZetex
0,06 €
Each (In a Pack of 25)
Aantal stuks
Microprocessor Reset Monitor 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3 x 1.4 x 1mm 3.15V
RS-stocknr. 168-6323
FabrikantnummerSTM809SWX6F
0,074 €
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 3V
RS-stocknr. 163-0682
FabrikantnummerNCP303LSN30T1G
FabrikantON Semiconductor
0,154 €
Each (On a Reel of 3000)
Aantal stuks
Voltage Monitor 1 - - 4.4V - 2.59V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
RS-stocknr. 667-4199
FabrikantnummerMCP120T-300I/TT
FabrikantMicrochip
0,381 €
Each (In a Pack of 10)
Aantal stuks
- 1 - - - - - Active Low, Open Drain 700ms Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 3V
RS-stocknr. 660-5673
FabrikantnummerTPS3600D33PW
5,06 €
Each
Aantal stuks
- 1 Yes Yes - Yes - Active Low 140ms Surface Mount TSSOP 14 5 x 4.4 x 1.15mm 3.24V
RS-stocknr. 160-2617
FabrikantnummerADM6713TAKSZ-REEL7
FabrikantAnalog Devices
0,35 €
Each (On a Reel of 3000)
Aantal stuks
Microprocessor Supervisory Circuit 1 - Yes 3.08V - 3V - - Surface Mount SC-70 4 2.2 x 1.35 x 1mm 5.5V
RS-stocknr. 806-2481
FabrikantnummerMAX809SN160T1G
FabrikantON Semiconductor
0,316 €
Each (In a Pack of 25)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull 460ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.01mm 1.64V
RS-stocknr. 156-5701
FabrikantnummerLTC2912ITS8-2#TRMPBF
FabrikantAnalog Devices
2,339 €
Each (On a Reel of 500)
Aantal stuks
Overvoltage Monitor, Undervoltage Monitor 1 - - - - - - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm 3.3V
RS-stocknr. 167-7678
FabrikantnummerBD5225FVE-TR
FabrikantROHM
0,156 €
Each (In a Pack of 25)
Aantal stuks
Open Drain Voltage Detector 1 - - - - - - - Surface Mount VSOF 5 1.6 x 1.2 x 0.6mm 2.59V
RS-stocknr. 167-7589
FabrikantnummerBD45451G-TR
FabrikantROHM
0,471 €
Each (In a Pack of 20)
Aantal stuks
Open Drain Voltage Detector 1 - Yes - - - - - Surface Mount SSOP 5 2.9 x 1.6 x 1.1mm 4.5V
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