BQ25619: BQ25619- Data hold time

switch

Expert 2375 points

Part Number: BQ25619

Hi TI Team,

What is the meaning of date hold time?
The spec doesn't find this timing

over 2 years ago

0 Ning T over 2 years ago

TI__Mastermind 46551 points

Hi,

Please refer to I2C specification at https://www.nxp.com/docs/en/user-guide/UM10204.pdf and search for data hold time.

Thanks,

Ning.

0 switch over 2 years ago in reply to Ning T

Expert 2375 points

Hi Ning，

I have two other questions

1，When BQ25619 is charging normally, short SYS to ground. At this time, there is still an input current of 190mA. Is this normal? If it is normal, what is the main consumption of this current?

2，The device will automatically resume normal operation once the input voltage drops back below the OVP threshold.Is the restored register the default register or the written register?

0 Wyatt Keller over 2 years ago in reply to switch

TI__Guru** 102355 points

Hello Switch,

Are you referring to the charge current after SYS is not connected to ground? Or the input current while SYS is grounded?

It should be the same register values as before OVP besides the detection register: https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1015633/bq25601-input-overvoltage-protection-behavior?tisearch=e2e-sitesearch&keymatch=BQ25601%20ovp#

Sincerely,

Wyatt Keller

0 switch over 2 years ago in reply to Wyatt Keller

Expert 2375 points

Hi Wyatt,

the input current while SYS is grounded,

0 Wyatt Keller over 2 years ago in reply to switch

TI__Guru** 102355 points

Hello Switch,

Can you define your test further? There's not enough information to help determine any inconsistencies. Do you have a battery connected with BATFET off or on? Are you testing on an EVM or custom board?

Sincerely,

Wyatt Keller

Power management

Power management forum

BQ25619: BQ25619- Data hold time