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. 822-5976
FabrikantnummerLTC2950ITS8-2#TRMPBF
FabrikantAnalog Devices
€ 4,745
Each (In a Pack of 2)
Aantal stuks
- - - - 1V - 0.6V - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm -
RS-stocknr. 412-866
FabrikantnummerADM1232ARNZ
FabrikantAnalog Devices
€ 2,098
Each (In a Pack of 5)
Aantal stuks
Microprocessor Voltage Monitor 2 Yes Yes - - - Active High, Active Low, Open Drain, Push-Pull 1000ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.74V
RS-stocknr. 738-6301
FabrikantnummerMCP1318T-29LE/OT
FabrikantMicrochip
€ 0,532
Each (In a Pack of 5)
Aantal stuks
- 1 Yes Yes - - - Active High, Active Low, Push-Pull 2240ms Surface Mount SOT-23 5 3.1 x 1.8 x 1.3mm 2.97V
RS-stocknr. 155-7520
FabrikantnummerLTC2950ITS8-2#TRMPBF
FabrikantAnalog Devices
€ 2,886
Each (On a Reel of 500)
Aantal stuks
- - - - 1V - 0.6V - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm -
RS-stocknr. 688-8809
FabrikantnummerMAX809STRG
FabrikantON Semiconductor
€ 0,39
Each (In a Pack of 2)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull 460ms Surface Mount SOT-23 3 2.9 x 1.3 x 0.94mm 3V
RS-stocknr. 912-2834
FabrikantnummerTC54VN2102ECB713
FabrikantMicrochip
€ 0,178
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active Low, Open Drain - Surface Mount SOT-23A 3 3.1 x 1.8 x 1.3mm 2.14V
RS-stocknr. 922-4750
FabrikantnummerTPS3838K33DBVT
€ 1,25
Each (On a Reel of 250)
Aantal stuks
- 1 - Yes - - - Active Low, Open Drain 300ms Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 2.99V
RS-stocknr. 768-1514
FabrikantnummerTC54VN2102ECB713
FabrikantMicrochip
€ 0,179
Each (In a Pack of 15)
Aantal stuks
- 1 - - - - - Active Low, Open Drain - Surface Mount SOT-23A 3 3.1 x 1.8 x 1.3mm 2.14V
RS-stocknr. 412-406
FabrikantnummerADM706TARZ
FabrikantAnalog Devices
€ 2,184
Each (In a Pack of 5)
Aantal stuks
- 1 Yes Yes - Yes - Active Low, Push-Pull 280ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.5V
RS-stocknr. 712-2778
FabrikantnummerAPX809-29SAG-7
FabrikantDiodesZetex
€ 0,218
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 3V
RS-stocknr. 738-6550
FabrikantnummerMCP112T-450E/TT
FabrikantMicrochip
€ 0,304
Each (On a Tape of 10)
Aantal stuks
- 1 - - - - - - - Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 4.49V
RS-stocknr. 165-4861
FabrikantnummerTCM809SENB713
FabrikantMicrochip
€ 0,129
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull 560ms Surface Mount SOT-23B 3 3.05 x 1.4 x 1.02mm 3V
RS-stocknr. 122-0667
FabrikantnummerAPX809-29SAG-7
FabrikantDiodesZetex
€ 0,073
Each (On a Reel of 3000)
Aantal stuks
Microprocessor Reset Monitor 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3 x 1.4 x 1mm 3V
RS-stocknr. 667-4272
FabrikantnummerTCM809SENB713
FabrikantMicrochip
€ 0,132
Each (In a Pack of 20)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull 560ms Surface Mount SOT-23B 3 3.05 x 1.4 x 1.02mm 3V
RS-stocknr. 165-3314
FabrikantnummerMCP112T-450E/TT
FabrikantMicrochip
€ 0,287
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - - - Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 4.49V
RS-stocknr. 163-2442
FabrikantnummerMAX809STRG
FabrikantON Semiconductor
€ 0,095
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull 460ms Surface Mount SOT-23 3 2.9 x 1.3 x 0.94mm 3V
RS-stocknr. 145-3361
FabrikantnummerNCP803SN293D3T1G
FabrikantON Semiconductor
€ 0,127
Each (On a Reel of 3000)
Aantal stuks
Microprocessor Reset Monitor 1 No - 3.08V - 2.78V - - Surface Mount SOT-23 3 2.2 x 1.35 x 0.9mm 4.9V
RS-stocknr. 162-7170
FabrikantnummerTPS3809J25DBVT
€ 0,403
Each (On a Reel of 250)
Aantal stuks
Supply 1 - - 2.3V - 2.2V - - Surface Mount SOT-23 3 2.9 x 1.6 x 1.15mm -
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. 163-0563
FabrikantnummerMC34064SN-5T1G
FabrikantON Semiconductor
€ 0,193
Each (On a Reel of 3000)
Aantal stuks
Undervoltage Detector 1 - - 4.7V - 4.5V - - Surface Mount TSOP 5 3 x 1.5 x 1mm 5V