MP2014 - 40V, 500mA, LOW QUIESCENT CURRENT LINEAR REGULATOR

MP2014 Rev. 1.01

www.MonolithicPower.com

10

1/15/2016

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APPLICATION INFORMATION

Component Selection

Input Capacitor

For proper operation, place a ceramic capacitor

(C1) between 1µF and 10µF of dielectric type

X5R or X7R between the input pin and ground.

Larger values in this range will help improve line

transient response.

Output Capacitor

For stable operation, use a ceramic capacitor (C2)

of type X5R or X7R between 1µF and 22µF.

Larger values in this range will help improve load

transient response and reduce noise. Output

capacitors of other dielectric types may be used,

but are not recommended as their capacitance

can deviate greatly from their rated value over

temperature.

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 3 for reference.

1) Input and output bypass ceramic capacitors

are suggested to be put close to the IN Pin

and OUT Pin respectively.

2) Connect IN, OUT and especially GND

respectively to a large copper area to cool

the chip to improve thermal performance and

long-term reliability.

Top Layer

Bottom Layer

Figure 3: PCB Layout