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 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 823-0173
Référence fabricantLTC1696ES6#TRMPBF
3,625 €
Each (In a Pack of 2)
Unité
Overvoltage Protection 1 - - 0.95V - 0.78V - - Surface Mount TSOT-23 6 3.1 x 1.75 x 0.9mm 24V
N° de stock RS 667-4199
Référence fabricantMCP120T-300I/TT
MarqueMicrochip
0,40 €
Each (In a Pack of 10)
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 155-9282
Référence fabricantLTC1696ES6#TRMPBF
2,328 €
Each (On a Reel of 500)
Unité
Overvoltage Protection 1 - - 0.95V - 0.78V - - Surface Mount TSOT-23 6 3.1 x 1.75 x 0.9mm 24V
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 624-8365
Référence fabricantSTM809SWX6F
0,326 €
Each (In a Pack of 10)
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 379-2140
Référence fabricantMCP101T-475I/TT
MarqueMicrochip
0,328 €
Each (In a Pack of 5)
Unité
- 1 - - - - - Active High, Push-Pull - Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 4.75V
N° de stock RS 162-6280
Référence fabricantLM809M3-2.63/NOPB
0,248 €
Each (On a Reel of 1000)
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 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 193-1531
Référence fabricantISL88011IH529Z-T7A
1,354 €
Each (On a Reel of 250)
Unité
- 1 - Yes - - - Active High - Surface Mount SOT-23 5 3 x 1.7 x 1.3mm 2.96V
N° de stock RS 145-2966
Référence fabricantMC34064D-5G
0,499 €
Each (In a Tube of 98)
Unité
Undervoltage Detector 1 - - 4.7V - 4.5V - - Surface Mount SOIC 8 5 x 4 x 1.5mm 5V
N° de stock RS 165-3312
Référence fabricantMCP111T-450E/LB
MarqueMicrochip
0,156 €
Each (On a Reel of 3000)
Unité
- 1 - - - - - Active Low, Open Drain 0.13ms Surface Mount SC-70 3 2.25 x 1.35 x 1mm 4.49V
N° de stock RS 191-3777
Référence fabricantMAX6320PUK29CY+T
2,884 €
Each (In a Pack of 5)
Unité
Microprocessor Voltage Monitor 1 Yes Yes - - - - - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm -
N° de stock RS 660-5673
Référence fabricantTPS3600D33PW
4,95 €
Each
Unité
- 1 Yes Yes - Yes - Active Low 140ms Surface Mount TSSOP 14 5 x 4.4 x 1.15mm 3.24V
N° de stock RS 171-7435
Référence fabricantBD4828FVE-TR
MarqueROHM
0,339 €
Each (In a Pack of 20)
Unité
Open Drain Voltage Detector 1 - - - - - - - Surface Mount VSOF 5 1.6 x 1.2 x 0.6mm 2.8V
N° de stock RS 146-1131
Référence fabricantMAX6304CSA+
2,839 €
Each (In a Tube of 100)
Unité
- 1 Yes Yes - - - Active High, Push-Pull 5.2ms Surface Mount SOIC 8 5 x 4 x 1.5mm -
N° de stock RS 160-2620
Référence fabricantADM6713SAKSZ-REEL7
0,344 €
Each (On a Reel of 3000)
Unité
Microprocessor Supervisory Circuit 1 - Yes 2.93V - 3.05V - - Surface Mount SC-70 4 2.2 x 1.35 x 1mm 5.5V
N° de stock RS 171-7459
Référence fabricantBU4221G-TR
MarqueROHM
0,355 €
Each (In a Pack of 25)
Unité
Open Drain Voltage Detector 1 - - - - - - - Surface Mount SSOP 5 2.9 x 1.6 x 1.1mm 2.1V
N° de stock RS 786-9900
Référence fabricantLTC2900-1IMS#PBF
4,505 €
Each (In a Pack of 2)
Unité
Programmable Quad Supply Monitor 4 - Yes 0.508V - 0.492V - - Surface Mount MSOP 10 3 x 3 x 0.86mm 1.8 V, 2.5 V, 3.3 V, 5V
N° de stock RS 781-4418
Référence fabricantNCP803SN463D1T1G
0,374 €
Each (In a Pack of 20)
Unité
Microprocessor Reset Monitor - - - 4.88V - 4.4V - - Surface Mount SOT-23 3 2.2 x 1.35 x 0.9mm 4.9V