TM
EV1542DK-00A
700KHz/1.3MHz Boost Converter
with a 2A Switch
EVALUATION BOARD
The Future of Analog IC Technology
TM
GENERAL DESCRIPTION
The EV1542DK-00A is the evaluation board for
the MP1542, a current mode step-up converter
with a 2A, 0.18Ω internal switch to provide a
highly efficient regulator with quick response.
The MP1542 can be operated at 700KHz or
1.3MHz allowing for easy filtering and low
noise. An external compensation pin gives the
user flexibility in setting loop dynamics, which
allows the use of small, low-ESR ceramic
output capacitors. Soft-start results in small
inrush current and can be programmed with an
external capacitor. The MP1542 operates from
an input voltage as low as 2.5V and can
generate 12V at up to 500mA from a 5V supply.
The MP1542 includes under-voltage lockout,
current limiting and thermal overload protection
preventing damage in the event of an output
overload. The MP1542 is available in a low
profile 8-pin MSOP package.
FEATURES
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2A, 0.18Ω, 25V Power MOSFET
Uses Tiny Capacitors and Inductors
Pin Selectable 700KHz or 1.3MHz Fixed
Switching Frequency
Programmable Soft-Start
Operates with Input Voltage as Low as 2.5V
and Output Voltage as High as 22V
12V at 500mA from 5V Input
UVLO, Thermal Shutdown
Internal Current Limit
Available in an 8-Pin MSOP Package
LCD Displays
Portable Applications
Handheld Computers and PDAs
Digital Still and Video Cameras
APPLICATIONS
“MPS” and “Monolithic Power Systems”, are Trademarks of Monolithic
Power Systems, Inc.
ELECTRICAL SPECIFICATIONS
Parameter
Input Voltage
Output Voltage
Output Current
Symbol
V
IN
V
OUT
I
OUT
Value
2.5 – 6
8
400
Units
V
V
mA
EV1542DK-00A EVALUATION BOARD
Efficiency vs
Load Current
95
90
EFFICIENCY (%)
85
80
75
70
65
60
55
V
IN
= 3.3V
V
OUT
= 8V
1
10
100
LOAD CURRENT (mA)
1000
Dimensions (2.0”X x 2.0”Y x 0.4”Z)
Board Number
EV1542DK-00A
EV1542DK-00A Rev. 1.2
6/8/2005
50
MPS IC Number
MP1542DK
MP1542-EC02
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
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