MPM3834C – 6V, 3A, ULTRA-SMALL STEP-DOWN POWER MODULE

MPM3834C Rev. 1.01

MonolithicPower.com

16

6/14/2022

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PCB Layout Guidelines

An efficient layout for the switching power

supplies

is

critical

for

stable

operation,

especially for the high switching frequency

converter. A poorly optimized layout can result

in poor line for the regulator or load regulation

or stability issues. For the best results, refer to

Figure 3 and follow the guidelines below:

1. Place a 0805-sized ceramic input capacitor

as close to the IC pins as possible.

2. Place a 0402-sized capacitor place at the

bottom of the IC (optional).

3. Connect the two ends of the ceramic

capacitor directly to IN and PGND.

4. Place the external feedback resistor next to

FB.

5. Connect AGND and PGND at a single point.

IN

IN

IN

PG

OUT

OUT

PGND

PGND

OUT_S

FB

AGND

EN

PGND

SW

GND

C1

C2

R2

R1

VIN

GND

OUT

Bottom Layer

Top Layer

Via

GND

Figure 3: Recommended PCB Layout