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. 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. 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. 700-3113
FabrikantnummerBD4845G-TR
FabrikantROHM
€ 0,313
Each (In a Pack of 20)
Aantal stuks
Open Drain Voltage Detector 1 - - 4.568V - 4.433V - - Surface Mount SSOP 5 2.9 x 1.6 x 1.1mm 6V
RS-stocknr. 662-4223
FabrikantnummerTPS3809J25DBVT
€ 0,638
Each (In a Pack of 10)
Aantal stuks
Supply 1 - - 2.3V - 2.2V - - Surface Mount SOT-23 3 2.9 x 1.6 x 1.15mm -
RS-stocknr. 163-0563
FabrikantnummerMC34064SN-5T1G
FabrikantON Semiconductor
€ 0,211
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
RS-stocknr. 662-3472
FabrikantnummerTPS3838K33DBVT
€ 2,154
Each (In a Pack of 5)
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. 806-2097
FabrikantnummerMC34064SN-5T1G
FabrikantON Semiconductor
€ 0,216
Each (On a Tape of 20)
Aantal stuks
Undervoltage Detector 1 - - 4.7V - 4.5V - - Surface Mount TSOP 5 3 x 1.5 x 1mm 5V
RS-stocknr. 858-0901
FabrikantnummerLTC4365HTS8#TRMPBF
FabrikantAnalog Devices
€ 3,775
Each (In a Pack of 2)
Aantal stuks
Overvoltage Monitor, Undervoltage Monitor - - - - - - - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm -
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. 768-1514
FabrikantnummerTC54VN2102ECB713
FabrikantMicrochip
€ 0,406
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. 168-7322
FabrikantnummerSTM809RWX6F
€ 0,127
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 2.7V
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. 169-5631
FabrikantnummerTL7705ACDR
€ 0,186
Each (On a Reel of 2500)
Aantal stuks
Supply 1 - - 4.6V - 4.5V - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 10V
RS-stocknr. 714-7878
FabrikantnummerSTM809RWX6F
€ 0,329
Each (In a Pack of 20)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 2.7V
RS-stocknr. 124-5356
FabrikantnummerNCP361SNT1G
FabrikantON Semiconductor
€ 0,205
Each (On a Reel of 3000)
Aantal stuks
Overvoltage Protection 1 - - 3.15 V, 5.9V - 2.85V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
RS-stocknr. 178-5286
FabrikantnummerMCP101T-475I/TT
FabrikantMicrochip
€ 0,236
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active High, Push-Pull - Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 4.75V
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. 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. 709-8098
FabrikantnummerADM699ARZ
FabrikantAnalog Devices
€ 2,22
Each
Aantal stuks
- 1 Yes - - - - Active High, Active Low, Push-Pull 280ms Surface Mount SOIC 16 - 4.73V
RS-stocknr. 822-6815
FabrikantnummerLTC4365CTS8#TRMPBF
FabrikantAnalog Devices
€ 3,31
Each (In a Pack of 2)
Aantal stuks
Overvoltage Protection 1 - - - - - - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm -