MP2004-DUAL, LOW NOISE, HIGH PSRR, 200mA LINEAR REGULATOR
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 5 for reference.
1)
2)
3)
Input and output bypass ceramic capacitors are suggested to be put close to the IN Pin and OUT
Pin respectively.
Ensure all feedback connections are short and direct. Place the feedback resistors and
compensation components as close to the chip as possible.
Connect IN, OUT and especially GND respectively to a large copper area to cool the chip to
improve thermal performance and long-term reliability.
IN
C
IN
R1
R2
IN
OUT1
OUT1
C
OUT1
MP2004
OUT2
OUT2
C
OUT2
EN1
EN2
EN1
EN2
GND
3
EN2
EN1 4
Figure 5—PCB Layout
2 GND
IN
5
Top Layer
1 OUT2 OUT1 6
MP2004 Rev. 0.92
4/6/2010
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