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. 162-7177
FabrikantnummerTPS3824-33DBVT
€ 1,239
Each (On a Reel of 250)
Aantal stuks
- 1 Yes - - - - Active High, Active Low - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 3V
RS-stocknr. 662-3426
FabrikantnummerTPS3824-33DBVT
€ 1,27
Each (In a Pack of 5)
Aantal stuks
- 1 Yes - - - - Active High, Active Low - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 3V
RS-stocknr. 145-0783
FabrikantnummerTLV803SDBZT
€ 0,298
Each (On a Reel of 250)
Aantal stuks
Open Drain Voltage Detector 1 - - 2.99V - 2.87V - - Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 2.5 V, 3 V, 3.3 V, 5V
RS-stocknr. 812-4198
FabrikantnummerTLV803SDBZT
€ 0,53
Each (On a Tape of 25)
Aantal stuks
Open Drain Voltage Detector 1 - - 2.99V - 2.87V - - Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 2.5 V, 3 V, 3.3 V, 5V
RS-stocknr. 900-9813
FabrikantnummerTPS3701DDCT
€ 2,478
Each (In a Pack of 5)
Aantal stuks
- - - - - - - - - Surface Mount SOT-23 6 3.05 x 1.75 x 1mm -
RS-stocknr. 620-0723
FabrikantnummerTPS3823-33DBVT
€ 1,072
Each (In a Pack of 10)
Aantal stuks
Supervisory Circuits with Watchdog 1 Yes Yes 3V - 2.86V - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 5.8V
RS-stocknr. 162-9884
FabrikantnummerTPS3701DDCT
€ 1,465
Each (On a Reel of 250)
Aantal stuks
- - - - - - - - - Surface Mount SOT-23 6 3.05 x 1.75 x 1mm -
RS-stocknr. 526-779
FabrikantnummerTPS3823-33DBVR
€ 0,628
Each (In a Pack of 5)
Aantal stuks
Supervisory Circuits with Watchdog 1 Yes Yes 3V - 2.86V - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 5.8V
RS-stocknr. 162-7180
FabrikantnummerTPS3836J25DBVT
€ 1,25
Each (On a Reel of 250)
Aantal stuks
- 1 - Yes - - - Active Low, Push-Pull 300ms Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 2.29V
RS-stocknr. 121-8855
FabrikantnummerLM809M3-4.63/NOPB
€ 0,28
Each (On a Reel of 1000)
Aantal stuks
- 1 - - - - - Active Low 840ms Surface Mount SOT-23 3 2.92 x 1.3 x 0.93mm 4.75V
RS-stocknr. 162-7155
FabrikantnummerTPS3307-33DGN
€ 2,548
Each (In a Tube of 80)
Aantal stuks
- 3 - Yes - - - Active High, Active Low 280ms Surface Mount MSOP 8 3 x 3 x 1.02mm 4.64V
RS-stocknr. 162-7153
FabrikantnummerTPS3307-18D
€ 2,394
Each (In a Tube of 75)
Aantal stuks
- 3 - Yes - - - Active High, Active Low 280ms Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 1.72 V, 3V
RS-stocknr. 536-0060
FabrikantnummerLM809M3-4.63/NOPB
€ 0,722
Each (In a Pack of 5)
Aantal stuks
- 1 - - - - - Active Low 840ms Surface Mount SOT-23 3 2.92 x 1.3 x 0.93mm 4.75V
RS-stocknr. 662-3463
FabrikantnummerTPS3836J25DBVT
€ 2,368
Each (In a Pack of 5)
Aantal stuks
- 1 - Yes - - - Active Low, Push-Pull 300ms Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 2.29V
RS-stocknr. 121-8661
FabrikantnummerTPS3825-33DBVT
€ 1,061
Each (On a Reel of 250)
Aantal stuks
- 1 - Yes - - - Active High, Active Low - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 3V
RS-stocknr. 662-4223
FabrikantnummerTPS3809J25DBVT
€ 0,702
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. 179-1782
FabrikantnummerTPS3707-33DR
€ 2,457
Each (In a Tube of 75)
Aantal stuks
- 2 - Yes - Yes - Active High, Active Low 280ms Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 2.98V
RS-stocknr. 162-6450
FabrikantnummerTPS3809K33QDBVRQ1
€ 0,33
Each (On a Reel of 3000)
Aantal stuks
Supply 1 - - 2.99V - 2.87V - - Surface Mount SOT-23 3 3 x 1.7 x 1.3mm -
RS-stocknr. 662-3347
FabrikantnummerTPS3707-33DR
€ 2,08
Each (In a Pack of 5)
Aantal stuks
- 2 - Yes - Yes - Active High, Active Low 280ms Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 2.98V
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 -