SLUSBC8C December 2013 – July 2018
The bq51003 includes a means of providing hardware overcurrent protection by means of an analog current regulation loop. The hardware current limit provides an extra level of safety by clamping the maximum allowable output current (that is, a current compliance). The RILIM resistor size also sets the thresholds for the dynamic rectifier levels and thus providing efficiency tuning per each application’s maximum system current. The calculation for the total RILIM resistance is as follows:
When referring to the application diagram shown in Figure 32, RILIM is the sum of RFOD and the R1 resistance (that is, the total resistance from the ILIM pin to GND).