MP1541

1.3MHz Boost Converter

MP1541 Rev.1.3

www.MonolithicPower.com

1

3/20/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP1541 is a 5-pin thin SOT23 current

mode step up converter intended for small, low

power applications. The MP1541 switches at

1.3MHz and allows the use of tiny, low cost

capacitors and inductors 2mm or less in height.

Internal soft start results in small inrush current

and extends battery life. The MP1541 operates

from an input voltage as low as 2.5V and can

generate 12V at up to 200mA from a 5V supply.

The MP1541 includes under-voltage lockout,

current limiting, and thermal overload protection

to prevent damage in the event of an output

overload. The MP1541 is available in a small

5-pin TSOT23 package.

FEATURES

On Board Power MOSFET

Uses Tiny Capacitors and Inductors

1.3MHz Fixed Switching Frequency

Internally Compensated

Internal Soft-Start

Operates with Input Voltage as Low as 2.5V

and Output Voltage as High as 22V

12V at 200mA from 5V Input

UVLO, Thermal Shutdown

Internal Current Limit

Available in a TSOT23-5 Package

APPLICATIONS

Camera Phone Flash

Handheld Computers and PDAs

Digital Still and Video Cameras

External Modems

Small LCD Displays

White LED Driver

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

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

5V

12V

200mA

D1

MP1541

SW

IN

FB

GND

EN

OFF ON

MP1541-TAC01

5

4

3

2

1

100

95

90

85

80

75

70

65

60

55

50

0

75

150 225 300 375 450

LOAD CURRENT (mA)

MP1541-TAC-EC01

Efficiency vs Load Current