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PDF MP2005 Data sheet ( Hoja de datos )

Número de pieza MP2005
Descripción 800mA High PSRR ULDO Linear Regulator
Fabricantes MPS 
Logotipo MPS Logotipo



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MP2005
Linear
The Future of Analog IC Technology
DESCRIPTION
The MP2005 is a micro power, 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 a s 0.5V. The MP2005 can
supply up t o 800mA of load curr ent with a
typical dropout voltage of 90mV. It requires a
bias supply (2.7V to 5.5 V) separate from V IN to
run the int ernal reference and LDO drive
circuitry. The output current comes directly from
the input v oltage sup ply for hig h efficiency
regulation. The 0.5V in ternal refere nce voltage
allows the o utput 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 a pplications.
The bias supply V BIAS can be dire ctly applied
from the ba ttery while VIN 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 inclu de thermal
overload an d current limit protection, stability
with ultra low ESR ceramic capacitors as low as
1μF, and fa st transient response. The MP2005
is available in a 8-pin QFN (2 mm x 3 mm)
package.
800mA High PSRR, ULDO
Regulator
FEATURES
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
APPLICATIONS
Low Current Regulators
Low Power Handheld Devices
Battery Powered Systems
Cellular Phones
Portable Electronic Equipment
Post Regulation for Switching
Supplies
Power Supplies
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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MP2005 pdf
MP2005 – 800mA, HIGH PSRR,ULDO LINEAR REGULATOR
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
C1=C3=2.2uF, C2=4.7uF, VEN=VBIAS=3.6V, TA=25ºC, unless otherwise noted
Dropout Voltage
vs. Temperature
40
Feedback Voltage
vs. Temperature
505
Output Voltage
vs. Temperature
1.210
36 504 1.208
32 503 1.206
28
24 VOUT=1.2V
IOUT=0.3A
20
-40 -15 10 35 60 85
502
501 VIN=1.0V
500 IOUT=1mA
-40 -15 10 35 60 85
1.204
1.202 VIN=1.5V
VOUT=1.2V
1.200 IOUT=0.3A
-40 -15 10 35 60 85
Output Noise
vs. Frequency
1200
1000
800
VIN=VBIAS=5.4V
VOUT=3.3V
IOUT=10mA
600
400
200
0
10 100 1000 10000 100000
FREQUENCY (Hz)
MP2005 Rev. 0.92
5/5/2010
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
5

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