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. 156-5701
FabrikantnummerLTC2912ITS8-2#TRMPBF
FabrikantAnalog Devices
2,339 €
Each (On a Reel of 500)
Aantal stuks
Overvoltage Monitor, Undervoltage Monitor 1 - - - - - - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm 3.3V
RS-stocknr. 167-7678
FabrikantnummerBD5225FVE-TR
FabrikantROHM
0,156 €
Each (In a Pack of 25)
Aantal stuks
Open Drain Voltage Detector 1 - - - - - - - Surface Mount VSOF 5 1.6 x 1.2 x 0.6mm 2.59V
RS-stocknr. 184-8185
FabrikantnummerBU4842FVE-TR
FabrikantROHM
0,381 €
Each (In a Pack of 50)
Aantal stuks
Open Drain Voltage Detector 1 - - - - - - - Surface Mount VSOF 5 1.6 x 1.2 x 0.6mm 4.2V
RS-stocknr. 688-8819
FabrikantnummerMC33161DG
FabrikantON Semiconductor
0,865 €
Each (In a Pack of 2)
Aantal stuks
Voltage Monitor 1 - - 1.295V - 1.245V - - Surface Mount SOIC 8 5 x 4 x 1.5mm -
RS-stocknr. 168-1159
FabrikantnummerBU4818FVE-TR
FabrikantROHM
0,19 €
Each (In a Pack of 25)
Aantal stuks
Open Drain Voltage Detector 1 - - - - - - - Surface Mount VSOF 5 1.6 x 1.2 x 0.6mm 1.88V
RS-stocknr. 165-7648
FabrikantnummerSTM1001TWX6F
0,165 €
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active Low, Open Drain 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 3.15V
RS-stocknr. 165-3562
FabrikantnummerMCP121T-240E/TT
FabrikantMicrochip
0,184 €
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - Yes - Active Low 130ms Surface Mount SOT-23B 3 3.04 x 1.4 x 1.02mm 2.37V
RS-stocknr. 167-7589
FabrikantnummerBD45451G-TR
FabrikantROHM
0,471 €
Each (In a Pack of 20)
Aantal stuks
Open Drain Voltage Detector 1 - Yes - - - - - Surface Mount SSOP 5 2.9 x 1.6 x 1.1mm 4.5V
RS-stocknr. 732-6832
FabrikantnummerMAX6749KA+T
FabrikantMaxim Integrated
3,45 €
Each
Aantal stuks
- 1 Yes - - - - Active Low, Open Drain 9.487ms Surface Mount SOT-23 8 3 x 1.75 x 1.3mm -
RS-stocknr. 686-1595
FabrikantnummerSTM1818TWX7F
0,132 €
Each (In a Pack of 10)
Aantal stuks
- 1 - Yes - - - Active Low, Open Drain - Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 3.15V
RS-stocknr. 193-1537
FabrikantnummerISL88011IH546Z-T7A
1,272 €
Each (On a Reel of 250)
Aantal stuks
- 1 - Yes - - - Active High - Surface Mount SOT-23 5 3 x 1.7 x 1.3mm 4.71V
RS-stocknr. 667-4256
FabrikantnummerMCP810T-315I/TT
FabrikantMicrochip
0,304 €
Each (In a Pack of 10)
Aantal stuks
- 1 - - - - - Active High, Push-Pull - Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 3.15V
RS-stocknr. 171-7452
FabrikantnummerBU4822FVE-TR
FabrikantROHM
0,418 €
Each (In a Pack of 20)
Aantal stuks
Open Drain Voltage Detector 1 - - - - - - - Surface Mount VSOF 5 1.6 x 1.2 x 0.6mm 2.2V
RS-stocknr. 171-7338
FabrikantnummerBU4842F-TR
FabrikantROHM
0,162 €
Each (On a Reel of 3000)
Aantal stuks
Open Drain Voltage Detector 1 - - - - - - - Surface Mount SOP 4 2 x 1.25 x 0.9mm 4.39V
RS-stocknr. 190-1620
FabrikantnummerMAX706CSA+
FabrikantMaxim Integrated
3,13 €
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. 190-1798
FabrikantnummerMAX8211CSA+
FabrikantMaxim Integrated
3,165 €
Each (In a Pack of 2)
Aantal stuks
- 1 - - - Yes - Active Low, Open Drain - Surface Mount SOIC 8 5 x 4 x 1.5mm -
RS-stocknr. 190-4821
FabrikantnummerDS1232LPS-2+T&R
FabrikantMaxim Integrated
1,566 €
Each (On a Reel of 2500)
Aantal stuks
Microprocessor Power Supply Supervisor 1 Yes - - Yes - Active High, Active Low, Open Drain 1000ms Surface Mount SOIC 8 5 x 4 x 1.5mm -
RS-stocknr. 783-3618
FabrikantnummerMAX6373KA+T
FabrikantMaxim Integrated
2,855 €
Each (In a Pack of 2)
Aantal stuks
Microprocessor Supervisory Circuit 1 Yes - - - - - - Surface Mount SOT-23 8 3 x 1.75 x 1.3mm -
Nieuw
RS-stocknr. 192-2272
FabrikantnummerMAX693ACSE+
FabrikantMaxim Integrated
5,591 €
Each (In a Tube of 50)
Aantal stuks
Voltage Monitor 1 Yes - 4.5V - 4.25V - - Surface Mount SOIC 16 10 x 4 x 1.5mm 5.5V
RS-stocknr. 167-7619
FabrikantnummerBD46455G-TR
FabrikantROHM
0,471 €
Each (In a Pack of 20)
Aantal stuks
CMOS Voltage Detector 1 - Yes - - - - - Surface Mount SSOP 5 2.9 x 1.6 x 1.1mm 4.5V
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