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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Beskrivning Pris Voltage Supervisor Type Number of Supervisors Watchdog Timer Manual Reset Maximum Reset Threshold Voltage Minimum Reset Threshold Voltage Mounting Type Package Type Pin Count Dimensions Maximum Monitored Voltage Maximum Operating Supply Voltage Automotive Standard Maximum Operating Temperature
RS-artikelnummer 802-4013
Tillv. art.nrNCP303LSN27T1G
VarumärkeON Semiconductor
1,353 kr
Each (On a Tape of 25)
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Undervoltage Detector 1 - - 2.754V 2.646V Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V 10 V - +125 °C
RS-artikelnummer 170-3553
Tillv. art.nrNCP303LSN27T1G
VarumärkeON Semiconductor
1,314 kr
Each (On a Reel of 3000)
Enheter
Undervoltage Detector 1 - - 2.754V 2.646V Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V 10 V - +125 °C
RS-artikelnummer 163-0563
Tillv. art.nrMC34064SN-5T1G
VarumärkeON Semiconductor
2,221 kr
Each (On a Reel of 3000)
Enheter
Undervoltage Sensing Circuit 1 - - 4.7V 4.5V Surface Mount TSOP 5 3 x 1.5 x 1mm 5V 6.5 V - +70 °C
RS-artikelnummer 806-2097
Tillv. art.nrMC34064SN-5T1G
VarumärkeON Semiconductor
4,927 kr
Each (On a Tape of 20)
Enheter
Undervoltage Sensing Circuit 1 - - 4.7V 4.5V Surface Mount TSOP 5 3 x 1.5 x 1mm 5V 6.5 V - +70 °C
RS-artikelnummer 802-4026
Tillv. art.nrNCP303LSN29T1G
VarumärkeON Semiconductor
2,812 kr
Each (In a Pack of 25)
Enheter
Undervoltage Detector 1 - - 2.958V 2.842V Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V 10 V - +125 °C
RS-artikelnummer 163-0701
Tillv. art.nrNCP305LSQ31T1G
VarumärkeON Semiconductor
1,407 kr
Each (On a Reel of 3000)
Enheter
Voltage Detector 1 - - 3.162V 3.038V Surface Mount SC-82AB 4 2.2 x 1.35 x 1mm 4.9V 10 V - +125 °C
RS-artikelnummer 145-0823
Tillv. art.nrTL7705AIP
VarumärkeTexas Instruments
5,737 kr
Each (In a Tube of 50)
Enheter
Supply 1 - - 4.6V 4.5V Through Hole PDIP 8 9.81 x 6.35 x 4.57mm 10V 18 V - +85 °C
RS-artikelnummer 121-9204
Tillv. art.nrTPS3809K33DBVT
VarumärkeTexas Instruments
4,459 kr
Each (On a Reel of 250)
Enheter
Supply 1 - - 2.99V 2.87V Surface Mount SOT-23 3 2.9 x 1.6 x 1.15mm - 6 V - +85 °C
RS-artikelnummer 806-0722
Tillv. art.nrNCP305LSQ31T1G
VarumärkeON Semiconductor
3,512 kr
Each (In a Pack of 25)
Enheter
Voltage Detector 1 - - 3.162V 3.038V Surface Mount SC-82AB 4 2.2 x 1.35 x 1mm 4.9V 10 V - +125 °C
RS-artikelnummer 162-9039
Tillv. art.nrNCP303LSN29T1G
VarumärkeON Semiconductor
1,121 kr
Each (On a Reel of 3000)
Enheter
Undervoltage Detector 1 - - 2.958V 2.842V Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V 10 V - +125 °C
RS-artikelnummer 662-4227
Tillv. art.nrTPS3809K33DBVT
VarumärkeTexas Instruments
6,328 kr
Each (In a Pack of 10)
Enheter
Supply 1 - - 2.99V 2.87V Surface Mount SOT-23 3 2.9 x 1.6 x 1.15mm - 6 V - +85 °C
RS-artikelnummer 428-486
Tillv. art.nrTL7705AIP
VarumärkeTexas Instruments
6,31 kr
Each
Enheter
Supply 1 - - 4.6V 4.5V Through Hole PDIP 8 9.81 x 6.35 x 4.57mm 10V 18 V - +85 °C
RS-artikelnummer 163-0558
Tillv. art.nrMC33164P-3RAG
VarumärkeON Semiconductor
2,274 kr
Each (On a Reel of 2000)
Enheter
Micropower Undervoltage Sensing Circuit 1 - - 2.8V 2.55V Through Hole TO-92 3 5.2 x 4.19 x 5.33mm 3V 10 V - +125 °C
RS-artikelnummer 686-4790
Tillv. art.nrSTM1061N30WX6F
VarumärkeSTMicroelectronics
3,606 kr
Each (In a Pack of 25)
Enheter
Low Power Voltage Detector 1 - - 3.06V 2.94V Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm - 6 V - +85 °C
RS-artikelnummer 806-2043
Tillv. art.nrMC33164P-3RAG
VarumärkeON Semiconductor
5,553 kr
Each (In a Pack of 20)
Enheter
Micropower Undervoltage Sensing Circuit 1 - - 2.8V 2.55V Through Hole TO-92 3 5.2 x 4.19 x 5.33mm 3V 10 V - +125 °C
RS-artikelnummer 165-7704
Tillv. art.nrSTM1061N30WX6F
VarumärkeSTMicroelectronics
1,386 kr
Each (On a Reel of 3000)
Enheter
Low Power Voltage Detector 1 - - 3.06V 2.94V Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm - 6 V - +85 °C
RS-artikelnummer 781-4411
Tillv. art.nrNCP803SN463T1G
VarumärkeON Semiconductor
3,702 kr
Each (In a Pack of 20)
Enheter
Microprocessor Reset Monitor - - - 4.88V 4.4V Surface Mount SOT-23 3 2.2 x 1.35 x 0.9mm 4.9V 5.5 V - +105 °C
RS-artikelnummer 709-9048
Tillv. art.nrTPD12S520DBTR
VarumärkeTexas Instruments
10,67 kr
Each (In a Pack of 5)
Enheter
- - - - - - Surface Mount TSSOP 38 9.7 x 4.4 x 1.15mm - - - +85 °C
RS-artikelnummer 145-7393
Tillv. art.nrTPD12S520DBTR
VarumärkeTexas Instruments
5,369 kr
Each (On a Reel of 2000)
Enheter
- - - - - - Surface Mount TSSOP 38 9.7 x 4.4 x 1.15mm - - - +85 °C
RS-artikelnummer 163-1050
Tillv. art.nrNCP803SN463T1G
VarumärkeON Semiconductor
1,481 kr
Each (On a Reel of 3000)
Enheter
Microprocessor Reset Monitor - - - 4.88V 4.4V Surface Mount SOT-23 3 2.2 x 1.35 x 0.9mm 4.9V 5.5 V - +105 °C
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