BQ24250 battery shut off?

Jamaal_Charles

Other Parts Discussed in Thread: BQ24250

Hello,

We are using the BQ24250, and want to know if there is a way to shut off the battery so that it doesn't supply the output of the BQ24250? Going into standby mode does shut off VIN, but I don't know how to cut the off battery. Is there a way to open the battery switch with an I2C command?

Thanks

over 9 years ago

0 Linhong Qin over 9 years ago

TI__Expert 4285 points

You can enable SHIP mode by turning on SYSOFF in Register 6, B4.

0 Fernando Lopez over 9 years ago

TI__Expert 8230 points

Hello Jamaal,

EDIT: See Linhonq and Jeff's reply.

You can try turning off the integrated BATFET between SYS and BAT by disabling charge by setting bit 1 of REG01 via I2C.

0 Jeff F over 9 years ago in reply to Fernando Lopez

TI__Guru**** 166626 points

/CE only turns on current flow from SYS to BAT not BAT to SYS. SHIP mode is a two step process: 1. Set B4 of Register 6 high and then 2. remove input power.

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BQ24250 battery shut off?