MP2030
3A Dual Supply
Very Low Dropout Linear Regulator
The Future of Analog IC Technology
DESCRIPTION
The MP2030 is a very low dropout, dual supply
linear regulator. The use of two supplies allows
the BIAS to control an NMOS device. The
NMOS device supplies power to the load via
the IN. In this way the input supply can be just
above the desired output, yet still provide very
good regulation performance due to the higher
bias supply. The BIAS operates from a 2.5V to
5.5V input and regulates the output voltage to
as low as 0.9V, and as high as 3.8V.
The MP2030 can supply up to 3A of load
current with a typical dropout voltage of 150mV.
The BIAS runs the internal reference and drive
circuitry, while the output current comes directly
from the IN for high efficiency regulation.
The low bias current of 220uA makes the
MP2030 ideal for use in battery-powered
applications. The BIAS can be directly applied
from the battery while IN is powered from the
high efficiency buck regulator. This will reduce
the output noise and decoupling capacitor.
Other features of MP2030 include thermal
overload and current limit protection, power
good indicator, stability with ultra low ESR
ceramic capacitors as low as 1uF, and fast
transient response. The MP2030 is available in
10-pin QFN (3mm x 3mm), and in QFN (5mm x
5mm) packages.
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FEATURES
Wide 1.1V to 5.5V Input Voltage Range
Stable with Very Small Ceramic Capacitors
150mV Dropout at 3A Output
2% Accurate Output Voltage
Adjustable Output Range of 0.9V to 3.8V
Low Noise: 80µV
RMS
(10Hz to 100kHz)
PSRR
o
32dB at 100kHz
Better Than 0.001%/mA Load Regulation
Stable With Low-ESR Output Capacitors
Low 220uA Ground Current
Internal Thermal Protection
Current Limit Protection
0.1µA Typical Quiescent Current at
Shutdown
Power Good Indicator
Network, Telecom, Equipment:
and Switches
Servers, Storage Equipment
Set-Top Box
Post Regulation for Switch Mode
Televisions
Routers
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APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
U1
VIN
1
IN
IN
BIAS
OUT
OUT
10
2
9
1.8V/3A
VOUT
GND
BIAS
3
MP2030
FB
EN
BP
8
PGOOD
GND
EN
4
PG
GND
7
C6
10nF
5
6
C8
1nF
MP2030 Rev. 0.91
10/10/2011
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
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