LTC3675_15 Datasheet, PDF (32/38 Pages) Linear Technology – 7-Channel Configurable High Power PMIC

LTC3675/LTC3675-1
Applications Information
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/LTC3675-1.
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 impedance 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.
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For more information www.linear.com/LTC3675
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