ZHCSSP1 july 2023 BQ25173-Q1
PRODUCTION DATA
This open-drain pin pulls LOW to indicate a good input source when:
The PG pin can be used as the GND connection for the bottom resistor in the feedback divider to prevent divider leakage current from the supercapacitor when the charger is disabled. This is only recommended when VREG ≤ 5 V (1-2s supercapacitors) as the absolute maximum rating on PG is 5.5 V. An example circuit can be seen in Figure 8-11.