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. 662-4236
FabrikantnummerTPS3809L30DBVT
0,638 €
Each (In a Pack of 10)
Aantal stuks
Supply 1 - - 2.7V - 2.58V - - Surface Mount SOT-23 3 2.9 x 1.6 x 1.15mm -
RS-stocknr. 168-5842
FabrikantnummerSTM6822TWY6F
0,305 €
Each (On a Reel of 3000)
Aantal stuks
- 1 Yes Yes - - - Active Low, Open Drain 280ms Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 3.15V
RS-stocknr. 178-8940
FabrikantnummerLTC4365ITS8#TRMPBF
FabrikantAnalog Devices
2,171 €
Each (On a Reel of 2500)
Aantal stuks
Overvoltage Monitor, Undervoltage Monitor 3 - - - - - - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm -
RS-stocknr. 662-3390
FabrikantnummerTPS3813K33DBVT
1,576 €
Each (In a Pack of 5)
Aantal stuks
- 1 Yes - - - - Open Drain - Surface Mount SOT-23 6 2.9 x 1.6 x 1.15mm 3V
RS-stocknr. 578-916
FabrikantnummerSTM6822TWY6F
0,762 €
Each (In a Pack of 5)
Aantal stuks
- 1 Yes Yes - - - Active Low, Open Drain 280ms Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 3.15V
RS-stocknr. 738-6323
FabrikantnummerMCP1320T-29LE/OT
FabrikantMicrochip
0,568 €
Each (In a Pack of 5)
Aantal stuks
- 1 Yes Yes - - - Active Low, Open Drain 2240ms Surface Mount SOT-23 5 3.1 x 1.8 x 1.3mm 2.97V
RS-stocknr. 709-8114
FabrikantnummerADM708RARZ
FabrikantAnalog Devices
0,892 €
Each (In a Pack of 5)
Aantal stuks
- 1 - Yes - Yes - Active High, Active Low, Push-Pull 280ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.5V
RS-stocknr. 162-7171
FabrikantnummerTPS3809L30DBVT
0,403 €
Each (On a Reel of 250)
Aantal stuks
Supply 1 - - 2.7V - 2.58V - - Surface Mount SOT-23 3 2.9 x 1.6 x 1.15mm -
RS-stocknr. 732-7270
FabrikantnummerDS1232LPS-2+
FabrikantMaxim Integrated
3,19 €
Each
Aantal stuks
Microprocessor Power Supply Supervisor 1 Yes Yes - Yes - Active High, Active Low, Open Drain 1000ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.74V
RS-stocknr. 761-6075
FabrikantnummerLM809M3-2.63/NOPB
0,564 €
Each (In a Pack of 10)
Aantal stuks
- 1 - - - - - Active High, Active Low 840ms Surface Mount SOT-23 3 3.048 x 1.194 x 0.94mm 2.7V
RS-stocknr. 124-5353
FabrikantnummerNCP302LSN40T1G
FabrikantON Semiconductor
0,123 €
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - - - Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V
RS-stocknr. 738-6382
FabrikantnummerMCP100T-300I/TT
FabrikantMicrochip
0,327 €
Each (In a Pack of 10)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull - Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 3V
RS-stocknr. 922-2713
FabrikantnummerTPS3805H33DCKR
0,424 €
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. 662-4227
FabrikantnummerTPS3809K33DBVT
0,638 €
Each (In a Pack of 10)
Aantal stuks
Supply 1 - - 2.99V - 2.87V - - Surface Mount SOT-23 3 2.9 x 1.6 x 1.15mm -
RS-stocknr. 121-8855
FabrikantnummerLM809M3-4.63/NOPB
0,254 €
Each (On a Reel of 1000)
Aantal stuks
- 1 - - - - - Active Low 840ms Surface Mount SOT-23 3 2.92 x 1.3 x 0.93mm 4.75V
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
0,399 €
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. 168-6323
FabrikantnummerSTM809SWX6F
0,11 €
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. 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. 162-4891
FabrikantnummerTPS3828-50DBVT
1,164 €
Each (On a Reel of 250)
Aantal stuks
- 1 Yes Yes - - - Open Drain - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 4.64V