MP6401

300mA LDO Linear Regulator with

Integrated Reset Circuit

MP6401 Rev. 1.0

www.MonolithicPower.com

1

9/7/2012

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2012 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP6401 combines a low-dropout linear

regulator with an integrated reset circuit. It

operates from a 2.5V to 5.5V input voltage and

regulates the output voltage with 2% accuracy

at 1.8V, 2.5V, 3.3V or adjustable value. It

delivers up to 300mA of load current. By

combining an LDO linear regulator with a reset

circuit, these products can reduce cost and save

space in compact portable devices such as cell

phones, smart phones, PDAs, PMPs, and

portable GPS devices.

The MP6401 provides a push-pull, active-low

that asserts when the regulator output voltage

drops

below

the

microprocessor

supply

threshold (-7.5% or -12.5% of nominal output

voltage). Four reset delay time, 3.125ms, 25ms,

200ms and 1580ms can be selected. The

MP6401 is available in 3mmx3mm TQFN8,

2mmx2mm TQFN6 and TSOT packages and is

specified for operation from -40

°C to 85°C.

FEATURES

• Low Quiescent Current of 80μA for Battery

Powered Equipment

• Low 114mV Dropout at 300mA Output

• ±2％ Accurate Output Voltage

• Fixed Output Voltage Options of 1.8V, 2.5V

or 3.3V

• Adjustable Output Voltage from 1.229V to

5V Using an External Resistor Divider

• PSRR: 57dB at 1kHz

• Input Reverse Current, Thermal and

Short-Circuit Protection

• Microprocessor Reset with Four Delay time

Options

APPLICATIONS

•

Smart Phone and Cell Phone

•

Portable GPS Devices

•

Wireless Devices

•

PDA and PMP

All MPS parts are lead-free and adhere to the RoHS directive. For MPS green

status, please visit MPS website under Quality Assurance. “MPS” and “The

Future of Analog IC Technology” are Registered Trademarks of Monolithic

Power Systems, Inc.

TYPICAL APPLICATION

2.5V to 5.5V

IN

OUT

ADJ

EN

RESET

GND

GND

uP

MP6401

R1

RESET