LTC3577 datasheet(32/38 Pages) LINER

32 / 38 page

LTC3675

3675fa

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 VIN 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.

LTC3577 Datasheet(PDF) 32 Page - Linear Technology