EV0077 (MP1541)

1.3MHz Low Power

Boost Converter

EVALUATION BOARD - INITIAL RELEASE

06/04, Rev. 1.0

www.MonolithicPower.com

1

Monolithic Power Systems

GENERAL DESCRIPTION

The EV0077 Evaluation Board is designed to

demonstrate the capabilities of MPS’ MP1541.

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.

ELECTRICAL SPECIFICATION

Parameter

Symbol

Value

Units

Supply Voltage

2.5 – 6

V

Output Voltage

12

V

Output Current

0.2

A

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”, “Monolithic Power Systems”, and “The Future of Analog IC

Technology” are Registered Trademarks of Monolithic Power Systems, Inc.

EV0077 EVALUATION BOARD

(2.5”X x 2.5”Y x 0.8”Z)

Board Number

MPS IC Number

EV0077 Rev. A

MP1541

100

95

90

85

80

75

70

65

60

55

50

0

75

150 225 300 375 450

LOAD CURRENT (mA)

EV0077_MP1541_PC01

Efficiency vs Load Current