SLUSD89B February 2019 – November 2019 BQ25887
PRODUCTION DATA.
The REGN LDO supplies internal bias circuits as well as the QHS and QLS gate drive. The LDO also provides bias rail to TS external resistors. The pull-up rail of STAT and PG can be connected to REGN as well. The REGN is enabled when all the below conditions are valid.
If one of the above conditions is not valid, the device is in high impedance mode (HIZ) with REGN LDO off. The device draws less than IVBUS_HIZ from VBUS during HIZ state. The battery powers up the system when the device is in HIZ.