MP8801 – LOW DROPOUT, 150mA LINEAR REGULATOR
MP8801 Rev. 1.9 www.MonolithicPower.com 8
10/10/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
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 6 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.
MP8801
FB
OUT
IN
GND
EN
VOUT
VIN
EN
R3
C1
C3
R1
R2
C2
Figure 5 —Typical Application Circuit
C1
1
2
34
5IN
EN
GND
FB
OUT
C3
IN
OUT
GND
R1
R2
C2
C3
R3
FIGURE 6 —TOP LAYER
