MP2030DQ-LF-P Datasheet, PDF (1/12 Pages) MPS Industries, Inc. – 3A Dual Supply Very Low Dropout Linear Regulator

The Future of Analog IC Technology
MP2030
3A Dual Supply
Very Low Dropout Linear Regulator
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.
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
APPLICATIONS
• Network, Telecom, Equipment:
and Switches
• Servers, Storage Equipment
• Set-Top Box
• Post Regulation for Switch Mode
• Televisions
Routers
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
VIN
BIAS
PGOOD
GND
EN
1 _IN
U1
10
OUT
2 _IN
9
OUT
MP2030
3 _BIAS
FB ⁸
4 _PG
5 _GND
EN ⁷
BP ⁶
C8
1nF
C6
10nF
1.8V/3A
VOUT
GND
MP2030 Rev. 0.91
www.MonolithicPower.com
1
10/10/2011
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