Questions tagged [supervisor]

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1 answer
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Is there a simpler way to latch a supervisor?

I’m currently designing a Li-Ion powered ESP32 circuit. The ESP32 has a minimum operating voltage of 3 V. So, my instinct is to use a 3.1 V supervisor to keep the ESP32 within an acceptable range. ...
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  • 165
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2 answers
88 views

What is the supply current in LM339N

I am repairing a voltage protector that contains a LM339N, that working like comparator, in the datasheet say that the current consumption is the 0.8 mA (max 2 mA). I measured with a tester the ...
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TPS3619-33 (Backup-Battery Supervisor) overdrawing current at the VBAT path after a few runs

I've been having a few problems in integrating the TPS3619-33 (Backup-Battery Supervisor) into a product that I've been working on for quite a while. After installing a new TPS3619 into the board ...
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0 votes
1 answer
64 views

Monitoring circuit for the switching voltage

I would like to monitor the switching voltage which is switching between 24V and ground at a frequency of 100kHz. If the voltage is below 21V, then generate a reset signal. The lines are the ...
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  • 1,755
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2 answers
43 views

SOLVED: TLV809E Push-Pull Supply Voltage Supervisor Reset PIN Voltage

I'm attempting to use the RESET pin of a TLV809EA26DBZR Push-Pull Active Low Voltage Supervisor IC to assert a high signal when my VDD input voltage exceeds the low voltage threshold of the Supervisor ...
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  • 37
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65 views

Simple through-hole voltage supervisor

I'm trying to power a microcontroller (ESP8266) from a solar cell and a supercapacitor. It might or might not make sense, but it's a hobby project. The thing is - ESP8266 doesn't boot if the voltage ...
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2 answers
101 views

Adding Hysteresis to Supply Voltage Supervisor

I am going through this TI-APP note - Voltage Supervisor,with hysteresis. I am not able to understand WHY they have derived the below equation 1 & equation 2 in the App note (page 2 & page 3)...
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