MPQ8903 Datasheet, PDF (1/8 Pages) Monolithic Power Systems – 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.
MPQ8903
Industrial Grade, Low Dropout
150mA Linear Regulator
FEATURES
• 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
APPLICATIONS
• 802.11 PC Cards
• Mobile Handset PLL Power
• Audio Codec Power
“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
C1 _{MPQ8903DX-X.X}
1µ F
V_IN
EN GND FB
EN (Pin3)
may be connected
to IN (Pin 1) directly
OUTPUT
1.25V to 5V
R1
The sum of
R2
R1 and R2
should not
exceed 100k
C3
2.2µ F
CERAMIC
V_DROPOUT vs I_LOAD
160
140
120
100
80
60
40
20
0
0 20 40 60 80 100 120 140 160
I_LOAD (mA)
MPQ8903 Rev. 1.2
www.MonolithicPower.com
1
5/21/2010
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