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. 190-4878
FabrikantnummerMAX9940AXK+T
FabrikantMaxim Integrated
€ 0,518
Each (On a Reel of 2500)
Aantal stuks
Overvoltage Protection 1 - - 0.3V - 0.19V - - Surface Mount SC-70 5 2.2 x 1.35 x 1mm -
RS-stocknr. 667-4133
FabrikantnummerMCP100T-315I/TT
FabrikantMicrochip
€ 0,327
Each (In a Pack of 20)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull - Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 3.15V
RS-stocknr. 190-1644
FabrikantnummerMAX706ESA+
FabrikantMaxim Integrated
€ 3,21
Each (In a Pack of 2)
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. 462-6511
FabrikantnummerTPS3820-33DBVT
€ 1,154
Each (In a Pack of 5)
Aantal stuks
- 1 Yes Yes - - - Active Low - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 3V
RS-stocknr. 168-1067
FabrikantnummerBU4210F-TR
FabrikantROHM
€ 0,433
Each (In a Pack of 25)
Aantal stuks
Open Drain Voltage Detector 1 - - - - - - - Surface Mount SOP 4 2 x 1.25 x 0.9mm 1V
RS-stocknr. 171-7369
FabrikantnummerBU4236G-TR
FabrikantROHM
€ 0,352
Each (In a Pack of 25)
Aantal stuks
Open Drain Voltage Detector 1 - - - - - - - Surface Mount SSOP 5 2.9 x 1.6 x 1.1mm 3.6V
RS-stocknr. 923-5738
FabrikantnummerMAX825TEUK+T
FabrikantMaxim Integrated
€ 1,606
Each (On a Reel of 2500)
Aantal stuks
- 1 - Yes - - - Active High, Active Low, Push-Pull 280ms Surface Mount SOT-23 5 2.9 x 1.63 x 1.1mm 3.15V
RS-stocknr. 165-8315
FabrikantnummerAPX810-44SAG-7
FabrikantDiodesZetex
€ 0,073
Each (On a Reel of 3000)
Aantal stuks
Microprocessor Reset Monitor 1 - Yes - - - Active High 280ms Surface Mount SOT-23 3 3 x 1.4 x 1mm 4.47V
RS-stocknr. 153-3182
FabrikantnummerADM6320CZ27ARJZ-R7
FabrikantAnalog Devices
€ 1,44
Each (In a Pack of 5)
Aantal stuks
Supervisory Circuits with Watchdog - Yes Yes 2.7V - - - - Surface Mount SOT-23 5 3 x 1.7 x 1.3mm -
RS-stocknr. 190-1596
FabrikantnummerMAX705ESA+
FabrikantMaxim Integrated
€ 6,30
Each
Aantal stuks
- 1 Yes Yes - Yes - Active Low, Push-Pull 280ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.75V
RS-stocknr. 624-8309
FabrikantnummerSTM6822SWY6F
€ 0,642
Each (In a Pack of 10)
Aantal stuks
Microprocessor Voltage Monitor 1 Yes Yes 2.96V - 2.89V - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm -
RS-stocknr. 190-1715
FabrikantnummerMAX6303CSA+
FabrikantMaxim Integrated
€ 4,69
Each (In a Pack of 2)
Aantal stuks
- 1 Yes Yes - - - Active Low, Push-Pull 5.2ms Surface Mount SOIC 8 5 x 4 x 1.5mm -
RS-stocknr. 165-4590
FabrikantnummerMCP130T-475I/TT
FabrikantMicrochip
€ 0,287
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active Low, Open Drain 700ms Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 4.75V
RS-stocknr. 185-0921
FabrikantnummerBU45K332G-TL
FabrikantROHM
€ 0,406
Each (In a Pack of 25)
Aantal stuks
Open Drain Voltage Detector 1 - - - - - - - Surface Mount SSOP 3 2.9 x 1.6 x 1.1mm 3.3V
RS-stocknr. 190-5826
FabrikantnummerMAX16052AUT+T
FabrikantMaxim Integrated
€ 2,154
Each (In a Pack of 5)
Aantal stuks
- 1 - - - - - Open Drain, Push-Pull - Surface Mount SOT-23 6 3 x 1.75 x 1.3mm -
RS-stocknr. 162-4894
FabrikantnummerTPS3838E18DBVT
€ 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 1.74V
RS-stocknr. 190-4841
FabrikantnummerMAX6315US31D3+T
FabrikantMaxim Integrated
€ 1,251
Each (On a Reel of 2500)
Aantal stuks
- 1 - Yes - - - Open Drain 336ms Surface Mount SOT-23 4 3.04 x 1.4 x 1.07mm -
RS-stocknr. 191-3276
FabrikantnummerMAX6320PUK29CY+T
FabrikantMaxim Integrated
€ 1,653
Each (On a Reel of 2500)
Aantal stuks
Microprocessor Voltage Monitor 1 Yes Yes - - - - - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm -
RS-stocknr. 189-7806
FabrikantnummerICL7665ACSA+
FabrikantMaxim Integrated
€ 2,928
Each (In a Tube of 100)
Aantal stuks
Microprocessor Voltage Monitor 2 - - 1.375V - 1.225V - - Surface Mount SOIC 8 5 x 4 x 1.5mm -
RS-stocknr. 191-3706
FabrikantnummerMAX809SEUR+T
FabrikantMaxim Integrated
€ 2,514
Each (In a Pack of 5)
Aantal stuks
Microprocessor Voltage Monitor 1 - - 2.96V - 2.89V - - Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm -