AN2937 Datasheet, PDF (20/41 Pages) STMicroelectronics – Power system demonstration kit based on the PM6686 dual

Jumper settings
9.8
OUT1 switching section regulation (FB1)
Table 10. Jumper S8 FB1 (connect FB1 pin to S8)
Position
OUT1 regulation
GND.
OUT1 regulates 5 V.
AN2937
Ext divider.
OUT1 regulates an adjustable voltage from 0.7 V to 5.5 V, programmable with the
external divider R4, R5.
VCC
OUT1 regulates 1.5 V.
9.9
Current limit of OUT1 switching section (ILIM1)
Table 11. Jumper S9 ILIM1 (connect ILIM1 pin to S9)
Position
OUT1 regulation
External
resistor
The threshold voltage of ILIM1 is compared with 1/10^th of the GND-PHASE1 drop
during the off time to determine a valley current limit.
VREF2
The internal threshold voltage of the current limit comparator is set to 200 mV.
20/41
Doc ID 15418 Rev 1