MP2005
800mA High PSRR, ULDO
Linear Regulator
The Future of Analog IC Technology
DESCRIPTION
The MP2005 is a micropower, ultra low-dropout
LDO linear regulator. It has a 1.0V to 5.5V input
voltage range and can regulate the output
voltage from as low as 0.5V. The MP2005 can
supply up to 800mA of load current with a
typical dropout voltage of 90mV. It requires a
bias supply (2.7V to 5.5V) separate from V
IN
to
run the internal reference and LDO drive
circuitry. The output current comes directly from
the input voltage supply for high efficiency
regulation. The 0.5V internal reference voltage
allows the output to be programmed to a wide
range of voltages (0.5V to 4V).
A low bias current of 100µA makes the MP2005
ideal for use in battery-powered applications.
The bias supply V
BIAS
can be directly applied
from the battery while V
IN
is powered from the
high efficiency buck regulator (or other
secondary supply). This reduces output noise
and the size of the decoupling capacitor.
Other features of MP2005 include thermal
overload and current limit protection, stability
with ultra low ESR ceramic capacitors as low as
1μF, and fast transient response. The MP2005
is available in a 8-pin QFN (2mm x 3mm)
package.
FEATURES
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Wide 1.0V to 5.5V Input Voltage Range
Stable with 1μF Ceramic Capacitor
Ultra-Low Dropout (ULDO) voltage: 90mV@800mA
2% Accurate Output Voltage
Adjustable Output Range of 0.5V to 4V
High PSRR
o
65dB at 1KHz
o
48dB at 1MHz
Better Than 0.0005%/mA Load Regulation
Stable With Low-ESR Output Capacitors
Low 100μA Ground Current
Internal Thermal Protection
Current Limit Protection
1µA Typical Quiescent Current at Shutdown
Low Current Regulators
Low Power Handheld Devices
Battery Powered Systems
Cellular Phones
Portable Electronic Equipment
Post Regulation for Switching
Supplies
Power Supplies
APPLICATIONS
Power
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP2005 Rev. 0.92
5/5/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
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