ZHCSMR2B December 2020 – December 2021 BQ76942
The BQ76942 device contains an integrated 1.8-V LDO (REG18) that provides a regulated 1.8-V supply voltage for the device's internal circuitry and digital logic. This regulator uses an external capacitor connected to the REG18 pin, which should only be used for internal circuitry.
The device also integrates two separately programmable LDOs (REG1 and REG2) for external circuitry, such as a host processor or external transceiver circuitry, which can be programmed to independent output voltages. The REG1 and REG2 LDOs take their input from the REGIN pin, with this voltage either provided externally or generated by an on-chip preregulator (referred to as REG0). The REG1 and REG2 LDOs can provide an output current of up to 45 mA each.