MP2005

800mA High PSRR, ULDO

Linear Regulator

MP2005 Rev. 0.92

www.MonolithicPower.com

1

5/5/2010

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© 2010 MPS. All Rights Reserved.

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

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.

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

• 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 Power

Supplies

• Power Supplies

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION