MP3115

High-Efficiency, Single-Cell Alkaline, 1.3MHz

Synchronous Step-up Converter

with Output Disconnect

MP3115 Rev. 0.9

www.MonolithicPower.com

1

4/12/2016

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2016 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP3115 is a synchronous, fixed frequency,

current mode step-up converter with output-to-

input disconnect optimized to boost a single AA

Alkaline battery to 2.5V or 3.3V.

It can startup from an input voltage as low as

0.950V and provide in-rush current limiting as

well as output short circuit protection. The

integrated P-Channel synchronous rectified

switch

provides

improved

efficiency

and

eliminates an external schottky diode. The

output disconnect feature allows the output to be

completely discharged, thus allowing the part to

draw less than 1µA of current in shutdown mode.

The 1.3MHz switching frequency allows for the

use of smaller external components and the

internal compensation and soft-start minimize

the external component count, all helping to

produce a compact solution for a wide range of

load current.

The MP3115 regulates the output voltage up to

4.0V or 3.3V at 200mA from a single cell AA

battery, without the use of an external Schottky

diode.

The MP3115 is offered in a SOT23-6 package.

EVALUATION BOARD REFERENCE

Board Number

Dimensions

EV3115DT-00A

L x W x H (5cm x 5cm x 1.2cm)

FEATURES

• Over 90% Efficiency

• Output-to-Input Disconnect in Shutdown

Mode

• Internal Synchronous Rectifier

• Output Voltage up to 4.0V without an

External Schottky Diode

• Inrush

Current

Limiting

and

Internal

Soft-Start

• Internal Compensation

• 1A Minimum Peak Current Limit

• 1.3MHz Fixed Switching Frequency

• Zero Current Shutdown Mode

• Thermal Shutdown

• 6-Pin SOT-23 Package

APPLICATIONS

• Single-cell Alkaline Consumer Products

• MP3 Players

• Wireless Mouse

• RFTags

• Audio Recorders

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

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

VIN

0.95V to 2.5V

EN

VOUT

3.3V

GND

SW

IN

EN

OUT

FB

MP3115

1

6

4

5

3

2