TPS62840: power from 2x CR2032

Fabio Leitao

Part Number: TPS62840

Hi,

The specs for the initial max voltage for CR2032 batteries indicate 3.4V. However, when starting draining current (i.e. 0.2mA) the voltage starts dropping to a value close to it nominal 3V.
Is the TPS62840 (with input voltage up to 6.5V and absolute max 7V) suitable for designs using 2x CR2032 batteries in series?

Thank you for your support.

over 1 year ago

0 Moheddin Pasha Shaik over 1 year ago

TI__Genius 16530 points

Hello Fabio,

Thank you for using E2E,

Fabio Leitao said:
Is the TPS62840 (with input voltage up to 6.5V and absolute max 7V) suitable for designs using 2x CR2032 batteries in series?

The sum up voltage of 2x CR2032 is 6.8V which is under 7V. It should be fine as far as the Vin is below Abs max ratings. But please be aware of the below statement.

Thank you & regards,

Moheddin.

0 Fabio Leitao over 1 year ago in reply to Moheddin Pasha Shaik

Prodigy 150 points

Hi Moheddin,

Thank you for the clarification.

Best regards

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TPS62840: power from 2x CR2032