LTC3675_12 Datasheet, PDF (32/38 Pages) Linear Technology – 7-Channel Confi gurable High Power PMIC

LTC3675
connect directly to the ground plane of the part. These
capacitors provide the AC current to the internal power
MOSFETs and their drivers. It’s important to minimize
inductance from these capacitors to the V_IN pins of the
LTC3675.
4. The switching power traces connecting SW1, SW2,
SW3, SW4, SW5, SWAB6, SWCD6 and SW7 to their
respective inductors should be minimized to reduce
radiated EMI and parasitic coupling. Due to the large
voltage swing of the switching nodes, high input im-
pedance sensitive nodes such as the feedback nodes
and LED_OV node should be kept far away or shielded
from the switching nodes or poor performance could
result.
5. The GND side of the switching regulator output capaci-
tors should connect directly to the thermal ground plane
of the part. Minimize the trace length from the output
capacitor to the inductor(s)/pin(s).
6. In a combined buck regulator application the trace length
of switch nodes to the inductor must be kept equal to
ensure proper operation.
3675fa
32