MP2005 – 800mA, HIGH PSRR,ULDO LINEAR REGULATOR

MP2005 Rev. 0.92

www.MonolithicPower.com

9

5/5/2010

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PCB Layout Guide

PCB layout is very important to achieve good regulation, ripple rejection, transient response and

thermal performance. It is highly recommended to duplicate EVB layout for optimum performance.

If change is necessary, please follow these guidelines and take Figure 2 for reference.

1) Input and output bypass ceramic capacitors are suggested to be put close to the IN Pin and OUT

Pin respectively.

2) Ensure all feedback connections are short and direct. Place the feedback resistors and

compensation components as close to the chip as possible.

3) Connect IN, OUT and especially GND respectively to a large copper area to cool the chip to

improve thermal performance and long-term reliability.

C1

C2

C3

R3

R1

R2

C4

EN

Top Layer

Bottom Layer

Figure 2—PCB Layout