MP2012 – 1.5A SYNCHRONOUS STEP-DOWN CONVERTER

MP2012 Rev. 1.01

www.MonolithicPower.com

9

9/22/2011

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PC Board Layout

PCB layout is very important to achieve stable

operation. Please follow these guidelines and

take Figure2 for references.

The high current paths (GND, IN and SW) should

be placed very close to the device with short,

direct and wide traces. Input capacitors should

be placed as close as possible to the respective

IN and GND pins. The external feedback

resistors shall be placed next to the FB pins.

Keep the switching nodes SW short and away

from the feedback network.

C1

L1

C2

R4

R1

GND

R2

FB

GND

PVIN

SW

VIN

EN

4

5

6

1

2

3

R3

C3

C4

GND

VIN

VOUT

GND

Top layer

Bottom layer

Figure 3—PCB Layout