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. 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. 179-1782
FabrikantnummerTPS3707-33DR
€ 2,457
Each (In a Tube of 75)
Aantal stuks
- 2 - Yes - Yes - Active High, Active Low 280ms Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 2.98V
RS-stocknr. 662-3347
FabrikantnummerTPS3707-33DR
€ 1,892
Each (In a Pack of 5)
Aantal stuks
- 2 - Yes - Yes - Active High, Active Low 280ms Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 2.98V
RS-stocknr. 620-1142
FabrikantnummerTPS3808G01DBVT
€ 1,38
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 -
RS-stocknr. 165-3587
FabrikantnummerTC54VN3002ECB713
FabrikantMicrochip
€ 0,305
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 3.06V
RS-stocknr. 922-4750
FabrikantnummerTPS3838K33DBVT
€ 1,265
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. 781-4402
FabrikantnummerNCP803SN293D3T1G
FabrikantON Semiconductor
€ 0,354
Each (On a Tape of 20)
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. 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. 877-9101
FabrikantnummerADM9690ARNZ
FabrikantAnalog Devices
€ 2,15
Each (In a Pack of 2)
Aantal stuks
- 1 Yes - - Yes - Active Low 75ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.42V
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. 662-4104
FabrikantnummerTL7705ACDR
€ 0,403
Each (In a Pack of 10)
Aantal stuks
Supply 1 - - 4.6V - 4.5V - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 10V
RS-stocknr. 379-2140
FabrikantnummerMCP101T-475I/TT
FabrikantMicrochip
€ 0,328
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. 144-5817
FabrikantnummerMCP112T-475E/TT
FabrikantMicrochip
€ 0,287
Each (On a Reel of 3000)
Aantal stuks
Microcontroller & Microprocessor Power Monitor 1 - - - - - - - Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 4.746V
RS-stocknr. 912-2988
FabrikantnummerMCP809T-475I/TT
FabrikantMicrochip
€ 0,304
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull - Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 4.75V
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. 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. 178-5443
FabrikantnummerLTC4365HTS8#TRMPBF
FabrikantAnalog Devices
€ 2,375
Each (On a Reel of 500)
Aantal stuks
Overvoltage Monitor, Undervoltage Monitor - - - - - - - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm -
RS-stocknr. 761-9689
FabrikantnummerLTC695CSW#PBF
FabrikantAnalog Devices
€ 4,87
Each
Aantal stuks
- 1 Yes Yes - Yes - Active Low, CMOS 280ms Surface Mount SOIC 16 10.49 x 7.595 x 2.337mm 4.75V
RS-stocknr. 738-6550
FabrikantnummerMCP112T-450E/TT
FabrikantMicrochip
€ 0,381
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. 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