BQ76905: REGOUT Enabled at 3.3V by default?

Jose A. Palazon

Part Number: BQ76905

Tool/software:

Dear all,

Could you please confirm that REGOUT Config default setting is 0x08 with REGOUT enable at 1.8V?

It is crucial information since this regulator will power the BQ76905 control microcontroller and we need to be enable at power-start.

3 months ago

0 Luis H. S. 3 months ago

TI__Mastermind 34980 points

Hello Jose,

Yes, it is enabled by default to 3.3-V. For reference, you can find this in Section 4 of the datasheet:

Hope that helps .

Best Regards,

Luis Hernandez Salomon

0 Jose A. Palazon 3 months ago in reply to Luis H. S.

Prodigy 10 points

Thank you very much.

Section 4 of BQ76905 datasheet is clear, but section 12.2.1.2 Settings:Configuration:REGOUT Config in the Technical Reference Manual is a very confusing and incongruous.

Best Regards

Jose A Palazón

0 Luis H. S. 3 months ago in reply to Jose A. Palazon

TI__Mastermind 34980 points

Hello Jose,

I agree, it is somewhat confusing! However, yes, I can still confirm that it is 3.3-V output by default. I believe the default setting may be written to the internal OTP's, so it may not show up in REGOUT Config register.

I will point the confusion out to our system engineer so we can make it more clear in any next revisions of the TRM.

Best Regards,

Luis Hernandez Salomon

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BQ76905: REGOUT Enabled at 3.3V by default?