ZHCSF78E June 2016 – April 2019 BQ35100
PRODUCTION DATA.
Power supply requirements for the BQ35100 device are simplified due to the presence of the internal LDO voltage regulation. The REGIN pin accepts any voltage level between 2.7 V and 4.5 V, which is optimum for single-cell Li-primary applications.
Decoupling the REGIN pin should be done with a 0.1-μF 10% ceramic X5R capacitor placed close to the device.
REGIN can be powered from an alternate power source, such as, for example, the boost converter output, as long as it is not also connected to the BAT input. In this case, BAT should only remain connected to the top of the cell.