BQ25120 - CD pin pulled low

Vio Liu

Other Parts Discussed in Thread: BQ25120

Hi team,

My customer is using our BQ25120. After CD pulled low, INT/PG/I2C interface should be shutdown. But actually we can't get access to I2C, but we can get signals from INT and PG when CD pulled low. Could you please let us know why? Thanks.

Best regards,

Vio Liu

over 9 years ago

0 Vio Liu over 9 years ago

TI__Expert 3045 points

Anybody who can answer my question? Thanks.

Best regards,
Vio Liu

0 Vio Liu over 9 years ago

TI__Expert 3045 points

Anybody who can answer my question? Thanks.

Best regards,
Vio Liu

0 Vio Liu over 9 years ago

TI__Expert 3045 points

Hi team,

One more question, when Vin is 5.1V, the INT signal is OK. But when Vin is 4.8V, there's pulses on INT, we don't know what happened, which will cause customer's CPU wake up . Could you please let us know the reason? Thanks.

Best regards,

Vio Liu

0 Gautham over 9 years ago in reply to Vio Liu

TI__Genius 12485 points

Vio,

Could you mask VIN_UV register bit B2 on 0x01 register and re-try? I am checking on the INT flags.

Meanwhile- on the interrupt question- looks like VIN is actually going to 0 in the beginning?

Thanks,
Gautham

Power management

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BQ25120 - CD pin pulled low