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BQ25750: How can I connect to a microcontroller with a 5V power supply?

tamgoh

Prodigy 75 points

Part Number: BQ25750
Other Parts Discussed in Thread: MSPM0L1306

Tool/software:

Hi,

How can I connect to a microcontroller with a 5V power supply?
Is there anything you can advise?
The following reference documents seem to indicate that a 3V power supply microcontroller is assumed.

---
Reference 1
SLUSDY3 - DECEMBER 2023 Page-15
Pull up rail 3.3V
---
Reference 2
SLUAAX5 - AUGUST 2024 Page-6
Application Note: How to Charge a Smart Battery Using MCU in Between to Translate SMBus or I2C
Figure 3-4 Typical Application block diagram of the MSPM0L1306
---

Best Regards,
Tamura Go

0 Christian Moyer 11 months ago

TI__Mastermind 32196 points

Hello Tamura,

tamgoh said:
How can I connect to a microcontroller with a 5V power supply?

I'm confused on the question, are you asking if you can use a 5V source as the pull-up rail?

Best Regards,

Christian

0 tamgoh 11 months ago in reply to Christian Moyer

Prodigy 75 points

Hi Christian-san,

Thank you for your reply.

Christian said:

Are you asking if you can use a 5V source as the pull-up rail?

Yes, I would like to confirm just to be sure that I can use a 5V source as a pull-up rail.

By the way, I am aware that Absolute Maximum Ratings stipulate that the SCL and SDA max is 6V.

Best Regards,
Tamura Go

0 Christian Moyer 11 months ago in reply to tamgoh

TI__Mastermind 32196 points

Hello Tamgoh,

Yes, you should be able to use a 5V pull up rail.

Best Regards,

Christian.