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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Description Prix 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
N° de stock RS 578-897
Référence fabricantSTM811TW16F
0,52 €
Each (In a Pack of 5)
Unité
- 1 - Yes - - - Active Low, Push-Pull 280ms Surface Mount SOT-143 4 3.04 x 1.4 x 1.02mm 3.15V
N° de stock RS 877-9101
Référence fabricantADM9690ARNZ
2,185 €
Each (In a Pack of 2)
Unité
- 1 Yes - - Yes - Active Low 75ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.42V
N° de stock RS 162-9514
Référence fabricantNCP301LSN27T1G
0,142 €
Each (On a Reel of 3000)
Unité
Voltage Detector 1 No - 2.754V - 2.646V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
N° de stock RS 163-0682
Référence fabricantNCP303LSN30T1G
0,152 €
Each (On a Reel of 3000)
Unité
Voltage Monitor 1 - - 4.4V - 2.59V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
N° de stock RS 178-5293
Référence fabricantMCP100T-300I/TT
MarqueMicrochip
0,236 €
Each (On a Reel of 3000)
Unité
- 1 - - - - - Active Low, Push-Pull - Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 3V
N° de stock RS 121-8855
Référence fabricantLM809M3-4.63/NOPB
0,254 €
Each (On a Reel of 1000)
Unité
- 1 - - - - - Active Low 840ms Surface Mount SOT-23 3 2.92 x 1.3 x 0.93mm 4.75V
N° de stock RS 889-5581
Référence fabricantMCP120T-300I/TT
MarqueMicrochip
0,287 €
Each (On a Reel of 3000)
Unité
- 1 - - - - - Active Low, Open Drain 700ms Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 3V
N° de stock RS 136-0681
Référence fabricantDS1232LPS-2+
2,012 €
Each (In a Tube of 100)
Unité
Microprocessor Power Supply Supervisor - - - - - - - - - - - - -
N° de stock RS 923-5763
Référence fabricantDS1232LPS-2+
2,114 €
Each (In a Tube of 400)
Unité
Microprocessor Power Supply Supervisor 1 Yes Yes - Yes - Active High, Active Low, Open Drain 1000ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.74V
N° de stock RS 761-6075
Référence fabricantLM809M3-2.63/NOPB
0,564 €
Each (In a Pack of 10)
Unité
- 1 - - - - - Active High, Active Low 840ms Surface Mount SOT-23 3 3.048 x 1.194 x 0.94mm 2.7V
N° de stock RS 168-5841
Référence fabricantSTM811TW16F
0,181 €
Each (On a Reel of 3000)
Unité
- 1 - Yes - - - Active Low, Push-Pull 280ms Surface Mount SOT-143 4 3.04 x 1.4 x 1.02mm 3.15V
N° de stock RS 808-0158
Référence fabricantNCP303LSN30T1G
0,285 €
Each (On a Tape of 100)
Unité
Voltage Monitor 1 - - 4.4V - 2.59V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
N° de stock RS 412-412
Référence fabricantADM690AARNZ
3,77 €
Each
Unité
- 1 Yes - - Yes - Active Low, Push-Pull 280ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.75V
N° de stock RS 124-5353
Référence fabricantNCP302LSN40T1G
0,123 €
Each (On a Reel of 3000)
Unité
- 1 - - - - - - - Surface Mount TSOP 5 3 x 1.5 x 1mm 4.9V
N° de stock RS 662-4205
Référence fabricantTPS3805H33DCKR
0,984 €
Each (In a Pack of 5)
Unité
Voltage Detector 2 - - 3.096V - 3.004V - - Surface Mount SC-70 5 2 x 1.25 x 0.9mm 6.3V
N° de stock RS 712-2781
Référence fabricantAPX809-31SAG-7
MarqueDiodesZetex
0,06 €
Each (In a Pack of 25)
Unité
Microprocessor Reset Monitor 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3 x 1.4 x 1mm 3.15V
N° de stock RS 168-6323
Référence fabricantSTM809SWX6F
0,11 €
Each (On a Reel of 3000)
Unité
- 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 3V
N° de stock RS 162-4891
Référence fabricantTPS3828-50DBVT
1,164 €
Each (On a Reel of 250)
Unité
- 1 Yes Yes - - - Open Drain - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 4.64V
N° de stock RS 122-0668
Référence fabricantAPX809-31SAG-7
MarqueDiodesZetex
0,063 €
Each (On a Reel of 3000)
Unité
Microprocessor Reset Monitor 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3 x 1.4 x 1mm 3.15V
N° de stock RS 165-7649
Référence fabricantSTM1061N34WX6F
0,154 €
Each (On a Reel of 3000)
Unité
Low Power Voltage Detector 1 - - 3.468V - 3.332V - - Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm -