Other Parts Discussed in Thread: BQ28Z610, BQ34210-Q1
Tool/software:
Hello! We are working on a low current (5mA average, 100mA peak) application that requires 3.3V and 12V with battery backup. Reliability is a mayor concern for the customer.
We were planning to use the BQ25798, with a 1S battery configuration.
The application requires 3.3V for a Microcontroller (MCP) that we plan to obtain from the VSYS output of the BQ25798 charger (adding a buck-boost regulator).
An input power source of 12V will be available to charge the battery and supply the load through the VBUS output, using the Backup Mode of the BQ25798 to supply power uninterruptedly (UPS) from the battery.
Questions:
1- Is the BQ25798 in this configuration the best solution for a charger with UPS (Backup Mode) capability?
2- Is the BQ28Z610 the best Fuel Gauge device to this application?
3- Are there any alternatives to the BQ25798 and the BQ28Z610 with AEC-Q100 compliance?
Thanks in advance,
Lien