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. 165-4887
FabrikantnummerMCP130T-270I/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 2.7V
RS-stocknr. 767-3488
FabrikantnummerMCP120T-485I/TT
FabrikantMicrochip
€ 0,165
Each (On a Tape of 10)
Aantal stuks
- 1 - - - Yes - Open Drain 10µs Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 4.85V
RS-stocknr. 165-3516
FabrikantnummerMCP120T-485I/TT
FabrikantMicrochip
€ 0,156
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - Yes - Open Drain 10µs Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 4.85V
RS-stocknr. 667-4219
FabrikantnummerMCP130T-270I/TT
FabrikantMicrochip
€ 0,40
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 2.7V
RS-stocknr. 122-0668
FabrikantnummerAPX809-31SAG-7
FabrikantDiodesZetex
€ 0,063
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 3.15V
RS-stocknr. 121-6506
FabrikantnummerNCP300LSN20T1G
FabrikantON Semiconductor
€ 0,176
Each (On a Reel of 3000)
Aantal stuks
Voltage Detector 1 - - 2.06V - 1.94V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
RS-stocknr. 160-2621
FabrikantnummerADM6713RAKSZ-REEL7
FabrikantAnalog Devices
€ 0,353
Each (On a Reel of 3000)
Aantal stuks
Microprocessor Supervisory Circuit 1 - Yes 2.63V - 2.55V - - Surface Mount SC-70 4 2.2 x 1.35 x 1mm 5.5V
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. 162-7153
FabrikantnummerTPS3307-18D
€ 2,394
Each (In a Tube of 75)
Aantal stuks
- 3 - Yes - - - Active High, Active Low 280ms Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 1.72 V, 3V
RS-stocknr. 165-3308
FabrikantnummerMCP130T-300I/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 3V
RS-stocknr. 662-3463
FabrikantnummerTPS3836J25DBVT
€ 2,154
Each (In a Pack of 5)
Aantal stuks
- 1 - Yes - - - Active Low, Push-Pull 300ms Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 2.29V
RS-stocknr. 162-7155
FabrikantnummerTPS3307-33DGN
€ 2,548
Each (In a Tube of 80)
Aantal stuks
- 3 - Yes - - - Active High, Active Low 280ms Surface Mount MSOP 8 3 x 3 x 1.02mm 4.64V
RS-stocknr. 145-3228
FabrikantnummerMAX803SQ308D2T1G
FabrikantON Semiconductor
€ 0,155
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active Low, Open Drain 66ms Surface Mount SC-70 3 2.2 x 1.35 x 0.9mm 3.15V
RS-stocknr. 578-893
FabrikantnummerSTM809LWX6F
€ 0,238
Each (In a Pack of 5)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 4.75V
RS-stocknr. 168-5840
FabrikantnummerSTM809LWX6F
€ 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 4.75V
RS-stocknr. 162-7180
FabrikantnummerTPS3836J25DBVT
€ 1,25
Each (On a Reel of 250)
Aantal stuks
- 1 - Yes - - - Active Low, Push-Pull 300ms Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 2.29V
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. 823-1123
FabrikantnummerMCP809T-315I/TT
FabrikantMicrochip
€ 0,313
Each (In a Pack of 25)
Aantal stuks
- 1 - - - - - Active Low - Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 3.15V
RS-stocknr. 810-0016
FabrikantnummerADM6713RAKSZ-REEL7
FabrikantAnalog Devices
€ 0,618
Each (On a Tape of 10)
Aantal stuks
Microprocessor Supervisory Circuit 1 - Yes 2.63V - 2.55V - - Surface Mount SC-70 4 2.2 x 1.35 x 1mm 5.5V
RS-stocknr. 121-8661
FabrikantnummerTPS3825-33DBVT
€ 1,061
Each (On a Reel of 250)
Aantal stuks
- 1 - Yes - - - Active High, Active Low - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 3V