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 Price 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庫存編號 356-9962
製造零件編號TLC7733ID
TWD96.00
單位
- 1 - - - - - - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 3V
RS庫存編號 812-4198
製造零件編號TLV803SDBZT
TWD20.40
Each (On a Tape of 25)
單位
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庫存編號 145-0783
製造零件編號TLV803SDBZT
TWD12.90
個 (在毎卷:250)
單位
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庫存編號 162-7164
製造零件編號TPS3808G30DBVT
TWD35.00
個 (在毎卷:250)
單位
- 1 - Yes - - - Open Drain - Surface Mount SOT-23 6 2.9 x 1.6 x 1.15mm 2.83V
RS庫存編號 662-3375
製造零件編號TPS3808G30DBVT
TWD57.40
/個 (每包:5個)
單位
- 1 - Yes - - - Open Drain - Surface Mount SOT-23 6 2.9 x 1.6 x 1.15mm 2.83V
RS庫存編號 732-7286
製造零件編號DS1233AZ-10+
TWD75.00
單位
Microprocessor Power Supply Supervisor 1 - Yes - Yes - Active Low, Open Drain 450ms Surface Mount SOT-223 3 + Tab 6.5 x 3.5 x 1.8mm 2.97V
RS庫存編號 791-6252
製造零件編號NCP303LSN45T1G
TWD14.90
Each (On a Tape of 25)
單位
Voltage Detector 1 - - 4.59V - 4.41V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
RS庫存編號 162-9516
製造零件編號NCP303LSN45T1G
TWD5.40
個 (在毎卷:3000)
單位
Voltage Detector 1 - - 4.59V - 4.41V - - Surface Mount TSOP 5 3 x 1.5 x 1mm -
RS庫存編號 923-5775
製造零件編號DS1233AZ-10+
TWD72.90
毎管:75 個
單位
Microprocessor Power Supply Supervisor 1 - Yes - Yes - Active Low, Open Drain 450ms Surface Mount SOT-223 3 + Tab 6.5 x 3.5 x 1.8mm 2.97V
RS庫存編號 189-1871
製造零件編號STM1818SWX7F
TWD8.30
個 (在毎卷:3000)
單位
- 1 - Yes - - - Active Low, Open Drain 200ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 3 V, 3.3V
RS庫存編號 121-8484
製造零件編號TL7705ACP
TWD23.70
毎管:50 個
單位
Supply 1 - - 4.6V - 4.5V - - Through Hole PDIP 8 9.81 x 6.35 x 4.57mm 10V
RS庫存編號 124-9970
製造零件編號CAT811TTBI-GT3
TWD5.30
個 (在毎卷:3000)
單位
Microprocessor Power Supply Supervisor 1 - Yes 3.15V - 3V - - Surface Mount SOT-143 4 3.04 x 1.4 x 1.07mm 5V
RS庫存編號 165-3308
製造零件編號MCP130T-300I/TT
BrandMicrochip
TWD12.20
個 (在毎卷:3000)
單位
- 1 - - - - - Active Low, Open Drain 700ms Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 3V
RS庫存編號 789-3929
製造零件編號CAT811TTBI-GT3
TWD12.70
/個 (每包:20個)
單位
Microprocessor Power Supply Supervisor 1 - Yes 3.15V - 3V - - Surface Mount SOT-143 4 3.04 x 1.4 x 1.07mm 5V
RS庫存編號 189-1932
製造零件編號STM1818SWX7F
TWD20.00
/個 (每包:25個)
單位
- 1 - Yes - - - Active Low, Open Drain 200ms Surface Mount SOT-23 3 3.04 x 1.4 x 1.02mm 3 V, 3.3V
RS庫存編號 738-6465
製造零件編號MCP130T-300I/TT
BrandMicrochip
TWD15.90
/個 (每包:10個)
單位
- 1 - - - - - Active Low, Open Drain 700ms Surface Mount SOT-23 3 2.9 x 1.3 x 0.95mm 3V
RS庫存編號 159-5032
製造零件編號TL7705ACP
TWD28.00
單位
Supply 1 - - 4.6V - 4.5V - - Through Hole PDIP 8 9.81 x 6.35 x 4.57mm 10V
RS庫存編號 412-412
製造零件編號ADM690AARNZ
TWD170.00
單位
- 1 Yes - - Yes - Active Low, Push-Pull 280ms Surface Mount SOIC 8 5 x 4 x 1.5mm 4.75V
RS庫存編號 822-8893
製造零件編號APX803-26SAG-7
TWD8.70
/個 (每包:30個)
單位
Microprocessor Reset Monitor 1 - - - - - Active Low 280ms Surface Mount SOT-23 3 3 x 1.4 x 1mm 2.66V
RS庫存編號 162-7165
製造零件編號TPS3808G09DBVT
TWD31.80
個 (在毎卷:250)
單位
- 1 - Yes - - - Open Drain - Surface Mount SOT-23 6 2.9 x 1.6 x 1.15mm 0.85V