MPQ8903
Industrial Grade, Low Dropout
150mA Linear Regulator
The Future of Analog IC Technology
DESCRIPTION
The MPQ8903 is a 150mA low-dropout linear
regulator that can operate from 2.7V to 6.5V
input. It regulates the output with 2% accuracy
and comes with preset 2.5V, 2.85V or 3.3V
output. An external resistor divider may be used
to adjust the output voltage from 1.25V to 5V.
The MPQ8903 has thermal protection to guard
against harsh operating conditions, and is
available in 5-pin TSOT23 package.
FEATURES
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Guaranteed Industrial Operating Temperate
Range Limits
2.7V to 6.5V Input Voltage Range
Fixed Output Voltage Options of 2.5V,
2.85V or 3.3V
Adjustable Output Voltage from 1.25V to 5V
using an External Resistor Divider
Low 100mV Dropout at 100mA Output
2% Accurate Output Voltage
Stable With Low-ESR Output Capacitors
Thermal Protection
Available in TSOT23-5 Package
802.11 PC Cards
Mobile Handset PLL Power
Audio Codec Power
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
V
IN
2.7V to 6.5V
IN
OUT
160
V
DROPOUT
vs I
LOAD
OUTPUT
R1
C3
2.2µ F
CERAMIC
1.25V to 5V
140
MPQ8903DX-X.X
EN
GND
FB
V
DROPOUT
(mV)
C1
1µ F
V
IN
120
100
80
60
40
20
0
0
20 40 60 80 100 120 140 160
I
LOAD
(mA)
EN (Pin3)
may be connected
to IN (Pin 1) directly
The sum of
R1 and R2
R2
should not
exceed 100k
MPQ8903 Rev. 1.2
5/21/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
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