MP20049

Ultra-Low Noise, High PSRR

150mA Linear Regulator in 0.8x0.8mm WLCSP

MP20049 Rev. 1.1

www.MonolithicPower.com

1

10/22/2010

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© 2010 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP20049 is an ultra-low noise, low-dropout,

high PSRR linear regulator. Fixed output

voltage options are available between 1.2V to

4.5V with 1% accuracy while operating from a

+2.3V to +6V input. It is designed to deliver up

to 150mA of load current. Dropout voltage is

only 60mV at full load.

The MP20049 uses an internal PMOS as the

pass element, which consumes 50µA supply

current at no load condition and is suitable for

battery-power devices. New innovative design

techniques enable the MP20049 to achieve

without a noise bypass capacitor.

The MP20049 is designed and optimized to

work with low value, low cost ceramic

capacitors. It typically requires only 1µF of

output capacitance for stability with any load.

The MP20049 features current limit and over

temperature protection and is available in a tiny

4-ball 0.8x0.8mm WLCSP package.

FEATURES

• Linear Regulator in 0.8x0.8mm WLCSP

• Input Voltage Range: 2.3V to 6V

• Up to 150mA Output Current

with No Bypass Capacitor required

• High PSRR:

•

78dB @1kHz

•

55dB @100kHz

• Low Dropout:

•

50mV @120mA Load

•

60mV @150mA Load

• Stable with 1µF Ceramic Capacitor for Any

Load

• Very Fast Line/Load Transient Response

• Current Limit and Thermal Protection

APPLICATIONS

• Cellular Mobile Phones

• Digital Cameras

• Handheld and Battery-powered Equipment

• Wireless LAN

• Post DC-to-DC Regulation

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

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

VIN

VOUT

EN

GND

MP20049