SLUSE14B December 2020 – December 2021 BQ76942
PRODUCTION DATA
The REG1 and REG2 LDOs take their input from the REGIN pin, which should be approximately 5.5 V. This REGIN pin voltage can be supplied externally (such as by a separate DC/DC converter) or using the integrated voltage preregulator (referring to as REG0), which drives the base of an external NPN BJT (using the BREG pin) to provide the 5.5 V REGIN pin voltage. When the preregulator is being used, special care should be taken to ensure the device retains sufficient voltage on its BAT pin per the Specifications.