MP3421—5.5A, 600KHZ HIGH EFFICIENCY, SYNCHRONOUS, STEP-UP CONVERTER WITH OUTPUT DISCONNECT IN 2X2MM QFN PACKAGE

MP3421 Rev. 1.0

www.MonolithicPower.com

14

11/13/2014

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Figure 2 shows recommended component

placement for the MP3421.

EN

IN

INA

NC

PGND

OUT

FB

AGND

SW

Top Layer

Bottom Layer

Via

VOUT

VIN

PGND

PGND

PGND

PGND

SW

OUT

SW

OUT

MP3421

L1

C2A

C2B

C1

R1

R2

Vias for heat sink

Figure 2: Layout Recommendation

Design Example

Table 2 shows a design example (using the

application

guidelines)

for

the

following

specifications:

Table 2: Design Example

2.8V-4.2V

5V

0A-2.1A

See Figure 3 for the detailed application

schematic. The typical application circuit for

performance

waveforms.

For

details

on

additional device applications, please refer to

the related evaluation board datasheets.