SLUSAH0F October 2011 – November 2019 BQ25504
The recommended L1 = 22 µH, CBYP = 0.01 µF and low leakage CREF = 10 nF are selected. In order to ensure the fastest recovery of the harvester output voltage to the MPPT level following power extraction, the minimum recommended CIN = 4.7 µF is selected. Because no large system load transients are expected and to ensure fast charge time during cold start, the minimum recommended CSTOR = 4.7 µF. To stop charging when the IC junction temperature is above 120°C, the OT_PROG pin is tied to VSTOR.