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. 662-3426
FabrikantnummerTPS3824-33DBVT
€ 1,154
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. 162-7177
FabrikantnummerTPS3824-33DBVT
€ 1,175
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. 471-386
FabrikantnummerLTC2924CGN#PBF
FabrikantAnalog Devices
€ 5,24
Each
Aantal stuks
Quad Power Supply Sequencer 4 - - - - - - - Surface Mount SSOP 16 4.98 x 3.99 x 1.5mm 6V
RS-stocknr. 145-0783
FabrikantnummerTLV803SDBZT
€ 0,271
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
€ 0,482
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. 624-8365
FabrikantnummerSTM809SWX6F
€ 0,326
Each (In a Pack of 10)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 3V
RS-stocknr. 168-6323
FabrikantnummerSTM809SWX6F
€ 0,11
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 3V
RS-stocknr. 178-8940
FabrikantnummerLTC4365ITS8#TRMPBF
FabrikantAnalog Devices
€ 2,171
Each (On a Reel of 2500)
Aantal stuks
Overvoltage Monitor, Undervoltage Monitor 3 - - - - - - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm -
RS-stocknr. 686-1687
FabrikantnummerSTM809MWX6F
€ 0,088
Each (In a Pack of 25)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 4.5V
RS-stocknr. 667-4199
FabrikantnummerMCP120T-300I/TT
FabrikantMicrochip
€ 0,40
Each (In a Pack of 10)
Aantal stuks
- 1 - - - - - Active Low, Open Drain 700ms Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 3V
RS-stocknr. 789-3935
FabrikantnummerCAT823ZTDI-GT3
FabrikantON Semiconductor
€ 0,576
Each (On a Tape of 10)
Aantal stuks
Voltage Monitor & Reset 1 Yes Yes 2.38V - 2.25V - - Surface Mount TSOT-23 5 2.9 x 1.6 x 0.9mm 5V
RS-stocknr. 889-5581
FabrikantnummerMCP120T-300I/TT
FabrikantMicrochip
€ 0,287
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active Low, Open Drain 700ms Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 3V
RS-stocknr. 906-3316
FabrikantnummerLTC4365ITS8#TRMPBF
FabrikantAnalog Devices
€ 3,635
Each (In a Pack of 4)
Aantal stuks
Overvoltage Monitor, Undervoltage Monitor 3 - - - - - - - Surface Mount TSOT-23 8 2.9 x 1.75 x 0.9mm -
RS-stocknr. 168-6362
FabrikantnummerSTM809MWX6F
€ 0,082
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 4.5V
RS-stocknr. 145-4078
FabrikantnummerCAT823ZTDI-GT3
FabrikantON Semiconductor
€ 0,261
Each (On a Reel of 3000)
Aantal stuks
Voltage Monitor & Reset 1 Yes Yes 2.38V - 2.25V - - Surface Mount TSOT-23 5 2.9 x 1.6 x 0.9mm 5V
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. 122-0668
FabrikantnummerAPX809-31SAG-7
FabrikantDiodesZetex
€ 0,063
Each (On a Reel of 3000)
Aantal stuks
Microprocessor Reset Monitor 1 - - - - - Active Low, Push-Pull 280ms Surface Mount SOT-23 3 3 x 1.4 x 1mm 3.15V
RS-stocknr. 667-4219
FabrikantnummerMCP130T-270I/TT
FabrikantMicrochip
€ 0,40
Each (In a Pack of 10)
Aantal stuks
- 1 - - - - - Active Low, Open Drain 700ms Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 2.7V
RS-stocknr. 165-4887
FabrikantnummerMCP130T-270I/TT
FabrikantMicrochip
€ 0,287
Each (On a Reel of 3000)
Aantal stuks
- 1 - - - - - Active Low, Open Drain 700ms Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 2.7V
RS-stocknr. 162-9884
FabrikantnummerTPS3701DDCT
€ 1,332
Each (On a Reel of 250)
Aantal stuks
- - - - - - - - - Surface Mount SOT-23 6 3.05 x 1.75 x 1mm -