REF3112: Minimu input voltage of REF3112

takahiko yokota

Part Number: REF3112

My customer use REF3112 at Vin=1.8V of ±3%.
So there is a possible Vin_min of REF31112 to be 1.746V.
Are there this using method the problem?

Best regards,

Yokota

over 5 years ago

0 Trailokya Rai over 5 years ago

TI__Genius 10951 points

Hi Yokota

Output voltage for REF3112 is 1.25V. Min Vin is specified as Vout + 0.05V . So customer can go to 1.3V typical without any issue.
Vin = 1.746V won't give any issue in the circuit.

Regards
Trailokya

0 takahiko yokota over 5 years ago in reply to Trailokya Rai

Mastermind 7135 points

Hi Trailokya-san

Thank you for your information.

There are written Vin_min=1.8V in comment (1) of 7.3 Recommended Operating Conditions.

What does mean this comment?

Best regards,

Yokota

0 Trailokya Rai over 5 years ago in reply to takahiko yokota

TI__Genius 10951 points

Hi Yokota-san

The buffer and Bandgap is designed for 1.8V. Hence if you are operating bellow 1.8V , acuuracy and load regulation spec will be degraded.
It is better if customer operates >= 1.8V.
1.764 may give bad accuracy and load reg. Sorry for previous confusion.

Regards
Trailokya

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REF3112: Minimu input voltage of REF3112