ADP5600ACPZ-R7 datasheet(24/25 Pages) AD

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ADP5600

Data Sheet

Rev. 0 | Page 24 of 25

CIRCUIT BOARD LAYOUT RECOMMENDATIONS

Because the internal switches of the ADP5600 turn on and off

very fast, good printed circuit board (PCB) layout practices are

critical to ensure optimum operation of the device. Improper

layouts result in poor load regulation, especially under heavy

loads. Output performance can be improved by following these

simple layout guidelines:

•

Place the input capacitor (CIN) as close as possible to the

VIN and GND pins.

•

Place the output capacitors (CCPOUT) and CLDO_OUT as close

as possible to the CPOUT/LDO_OUT and GND pins.

•

Place fly capacitors (CC1 and CC2) close to the respective fly

capacitor pins (C1+/C2+ and C1−/C2−).

•

Use of 0603 and 0402 size capacitors and resistors achieves

the smallest possible footprint solution on boards where

area is limited.

•

Connect the exposed pad to CPOUT.

•

Use adequate ground and power traces or planes.

•

Use a single-point ground for device ground and input and

output capacitor grounds.

•

Keep external components as close to the device as possible.

•

Use short and wide traces/planes from the input and

output capacitors to the input and output pins, respectively.

Figure 64. Example PCB Layout

10.2mm

CC1

0603

CIN

0805

CCPOUT

0805

CC2

0603

CLDO_OUT

0603

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