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. 806-0785
FabrikantnummerNCP302LSN40T1G
FabrikantON Semiconductor
0,121 €
Each (In a Pack of 25)
Aantal stuks
Voltage Detector 1 - - 4.08V - 3.92V - - Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V
RS-stocknr. 163-0676
FabrikantnummerNCP302LSN30T1G
FabrikantON Semiconductor
0,148 €
Each (On a Reel of 3000)
Aantal stuks
Voltage Detector 1 - - 3.06V - 2.94V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
RS-stocknr. 805-2043
FabrikantnummerNCP303LSN09T1G
FabrikantON Semiconductor
0,345 €
Each (On a Tape of 25)
Aantal stuks
Voltage Detector 1 - - 0.918V - 0.882V - - Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V
RS-stocknr. 162-9031
FabrikantnummerNCP303LSN09T1G
FabrikantON Semiconductor
0,138 €
Each (On a Reel of 3000)
Aantal stuks
Voltage Detector 1 - - 0.918V - 0.882V - - Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V
RS-stocknr. 808-3952
FabrikantnummerNCP302LSN30T1G
FabrikantON Semiconductor
0,409 €
Each (In a Pack of 50)
Aantal stuks
Voltage Detector 1 - - 3.06V - 2.94V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
RS-stocknr. 163-0672
FabrikantnummerNCP302HSN40T1G
FabrikantON Semiconductor
0,11 €
Each (On a Reel of 3000)
Aantal stuks
Voltage Detector 1 - - 4.08V - 3.92V - - Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V
RS-stocknr. 806-0779
FabrikantnummerNCP302HSN40T1G
FabrikantON Semiconductor
0,121 €
Each (On a Tape of 25)
Aantal stuks
Voltage Detector 1 - - 4.08V - 3.92V - - Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V
RS-stocknr. 791-6258
FabrikantnummerNCP301LSN27T1G
FabrikantON Semiconductor
0,391 €
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. 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. 162-9514
FabrikantnummerNCP301LSN27T1G
FabrikantON Semiconductor
0,156 €
Each (On a Reel of 3000)
Aantal stuks
Voltage Detector 1 No - 2.754V - 2.646V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
RS-stocknr. 163-0682
FabrikantnummerNCP303LSN30T1G
FabrikantON Semiconductor
0,167 €
Each (On a Reel of 3000)
Aantal stuks
Voltage Monitor 1 - - 4.4V - 2.59V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
RS-stocknr. 808-0158
FabrikantnummerNCP303LSN30T1G
FabrikantON Semiconductor
0,314 €
Each (On a Tape of 100)
Aantal stuks
Voltage Monitor 1 - - 4.4V - 2.59V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
RS-stocknr. 806-0716
FabrikantnummerNCP305LSQ20T1G
FabrikantON Semiconductor
0,108 €
Each (In a Pack of 25)
Aantal stuks
Voltage Detector 1 - - 2.04V - 1.96V - - Surface Mount SC-82AB 4 2.2 x 1.35 x 1mm 4.9V
RS-stocknr. 806-2526
FabrikantnummerMAX810TTRG
FabrikantON Semiconductor
0,132 €
Each (On a Tape of 20)
Aantal stuks
- 1 - - - - - Active High, Push-Pull 460ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.01mm 3.16V
RS-stocknr. 789-3929
FabrikantnummerCAT811TTBI-GT3
FabrikantON Semiconductor
0,313 €
Each (In a Pack of 20)
Aantal stuks
Microprocessor Power Supply Supervisor 1 - Yes 3.15V - 3V - - Surface Mount SOT-143 4 3.04 x 1.4 x 1.07mm 5V
RS-stocknr. 163-0448
FabrikantnummerMAX809JTRG
FabrikantON Semiconductor
0,138 €
Each (On a Reel of 3000)
Aantal stuks
- 1 No - - No - Active Low, Push-Pull 460ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.01mm 4.1V
RS-stocknr. 516-5067
FabrikantnummerMC34064P-5G
FabrikantON Semiconductor
0,61 €
Each
Aantal stuks
- 1 - - - - - - - Through Hole TO-92 3 5.2 x 4.19 x 5.33mm 4.7V
RS-stocknr. 186-9211
FabrikantnummerMC34164D-5G
FabrikantON Semiconductor
0,536 €
Each (In a Pack of 25)
Aantal stuks
- 1 - - 2.8V - 2.55V - - Surface Mount SOIC 8 5 x 4 x 1.5mm 5V
RS-stocknr. 163-0558
FabrikantnummerMC33164P-3RAG
FabrikantON Semiconductor
0,297 €
Each (On a Reel of 2000)
Aantal stuks
Undervoltage Detector 1 - - 2.8V - 2.55V - - Through Hole TO-92 3 5.2 x 4.19 x 5.33mm 3V
RS-stocknr. 163-0454
FabrikantnummerMAX809SQ463T1G
FabrikantON Semiconductor
0,126 €
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull 460ms Surface Mount SC-70 3 2.2 x 1.35 x 0.9mm 4.75V