LP5907: Enable Pin minimum threshold for logic high

Manikandan Janakiraman26

Part Number: LP5907

Hello

I am using LP5907SNX-2.7/NOPB regulator in my design. the Input to the regulator is 3.3V, output is 2.7V and enable pin connected to 1.1V. Enable pin minimum threshold high voltage mentioned in datasheet is 1.2V nad also in the datasheet Figure 2. VEN Thresholds vs VIN showing that with 0.8V also the regulator will turn on. I need to connect ENABLE pin to 1.1V because of the power sequence requirement.

Can you please confirm 1.1V to the enable pin will work or not?

Thanks

Mani

over 8 years ago

0 Mark Sellers over 8 years ago

TI__Expert 7015 points

Hi Mani,

Setting the EN voltage to 1.1 V will not work. The output of the part will turn on somewhere between 0.4 V and 1.2 V, but to ensure that every part is on the EN voltage must be greater than 1.2 V.

Best Regards,
Mark

Power management

Power management forum

LP5907: Enable Pin minimum threshold for logic high