MP2127 – 2.7-6V, 2A, 1.2MHZ SYNCHRONOUS STEP-DOWN CONVERTER

MP2127 Rev. 0.91

www.MonolithicPower.com

10

4/27/2010

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© 2010 MPS. All Rights Reserved.

The junction-to-ambient thermal resistance of the

maximum

allowable

power

dissipation

is

about1.6W when MP2127 is operating in a 70

°C

ambient temperature environment:

W

6

.

1

W

/

C

50

C

70

C

150

PD

o

o

o

MAX

=

−

=

PC Board Layout

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

PGOOD

4

5

6

1

2

3

R3

C3

C4

GND

VIN

VOUT

Top Layer

GND

Bottom Layer