TPS2069C: Enable Logic level

jvasanthan

Intellectual 425 points

Part Number: TPS2069C

Tool/software:

Hi Team,

In TPS2069CDBVR, The Vin is connected to a battery where voltage can go to 3.0V

When Vin=3.0V, can I use 3.3V (supplied by a separate boost converter) CMOS logic in the EN pin to turn on/off?

Regards,

James

over 1 year ago

+1 Abraham Mitchell over 1 year ago

TI__Prodigy 210 points

Hello James,

On table 7.3 of the TPS2069C data sheet you can see that 3.3V is within the recommended voltage range for the EN pin. You can also see in section 8.3.2 that EN is compatible with CMOS logic. However, the recommended voltage range for VIN is 4.5V - 5.5V. While 3.0V on VIN is technically allowable, you may see unexpected or undesired results when operating outside of the recommended voltage range. I would recommend looking into the TPS2069EDBVR. This device is a drop-in replacement for the TPS2069CDBVR that has a VIN range of 2.7V - 5.5V and is also lower in cost.

Thanks,

Abraham

0 jvasanthan over 1 year ago in reply to Abraham Mitchell

Intellectual 425 points

Thank you Abraham.

0 Abraham Mitchell over 1 year ago in reply to jvasanthan

TI__Prodigy 210 points

Of course, it is my pleasure. If you have any more questions later on, please start a new E2E thread.

Thanks,

Abraham

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TPS2069C: Enable Logic level