INA300 UVLO

Keiichi Kajino

Expert 2365 points

Other Parts Discussed in Thread: INA300

Hi, folks

Does the INA300 have a UVLO circuitry?

We are planning to diable Vs when INA300 detects ALART if LATCH mode for its recovery.

Could you tell me know UVLO thershold and its time enough to initalize INA300?

over 8 years ago

0 Rabab Itarsiwala over 8 years ago

TI__Expert 4595 points

Hi Keiichi,
When an over-current conditon is detected, you are planning to disable INA300 supply? when you say disable you mean you will float Vs?

0 Keiichi Kajino over 8 years ago in reply to Rabab Itarsiwala

Expert 2365 points

> you are planning to disable INA300 supply?
Yes.

> you mean you will float Vs?
No, if it requires dV/dt for its discharging, could you let me the value also?

0 Rabab Itarsiwala over 8 years ago in reply to Keiichi Kajino

TI__Expert 4595 points

Hi Keiichi,
There is no UVLO feature on INA300. It does have a disable feature where the power consumption reduces.

0 Keiichi Kajino over 8 years ago in reply to Rabab Itarsiwala

Expert 2365 points

Rabab,
My original question is how we can latch-off ALART signal. Is it a only way to EN=L to realize this?
On the other hand, I suspect the default state of LATCH signal may collapse without UVLO.
Could you let me know the how you gurantee default state of LATCH signal when power ramp-up?
Is the EN=L while power ramp-up is mandatory?

0 Keiichi Kajino over 8 years ago in reply to Keiichi Kajino

Expert 2365 points

Is the EN=L or LATCH=L while power ramp-up to initalize ALART signal is mandatory?

0 Rabab Itarsiwala over 8 years ago in reply to Keiichi Kajino

TI__Expert 4595 points

Hi Keiichi, Sorry if I misunderstood your question.
Enable = low will be the reliable way to turn-off Alert functionality (Alert will be pulled up to the supply). During power-up keeping Enable = low will prevent any false alerts until the supply reaches the minimum required power supply voltage.

0 Keiichi Kajino over 8 years ago in reply to Rabab Itarsiwala

Expert 2365 points

Hi Rabab,
I got it. Thank you.

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INA300 UVLO