EV1542DK-SEPIC-00A Datasheet, PDF (1/4 Pages) Monolithic Power Systems – 700KHz/1.3MHz Boost Converter with a 2A Switch

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GENERAL DESCRIPTION
The EV1542DK-SEPIC-00A is the demo board
for sepic applications using the MP1542, a
current mode step up converter with a 2A,
0.18Ω internal switch to provide a highly
efficient regulator with fast response. The
EV1542DK-SEPIC-00A 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. The soft-start
results in small inrush current and can be
programmed with an external capacitor. The
EV1542DK-SEPIC-00A can operate from a
single Li-Ion battery to generate 3.3V at up to
500mA.
Other features include under voltage lockout,
current limiting and thermal overload protection,
all available in a low profile 8-pin MSOP
package.
ELECTRICAL SPECIFICATIONS
Parameter
Input Voltage
Output Voltage
Output Current
Symbol
V_IN
V_OUT
I_OUT
Value
3 – 4.2
3.3
500
Units
V
V
mA
EV1542DK-SEPIC-00A
700KHz/1.3MHz Boost Converter
with a 2A Switch
EVALUATION BOARD
FEATURES
• Automatic Up-Down Conversion
• Operates from a Single Li-Ion Battery to
Generate 3.3V at up to 500mA
• Uses Tiny Capacitors and Inductors
• Pin Selectable 700KHz or 1.3MHz Fixed
Switching Frequency
• Programmable Soft-Start
• UVLO, 2A Switch, Thermal Shutdown
• Internal Current Limit
APPLICATIONS
• LCD Displays
• Portable Applications
• Handheld Computers and PDAs
• Digital Still and Video Cameras
“MPS” and “Monolithic Power Systems”, are Trademarks of Monolithic
Power Systems, Inc.
EV1542DK-SEPIC-00A EVALUATION BOARD
Dimensions (2.0”X x 2.0”Y x 0.0”Z)
Board Number
MPS IC Number
EV1542DK-SEPIC-00A
MP1542DK
Efficiency vs
Load Current
90
80
70 V_IN=4.2V
60
V_IN=3.6V
50
40
V_IN=3V
30
20
10
0
1
10
100
1000
LOAD CURRENT (mA)
EV1542_EC02
EV1542DK-SEPIC-00A Rev. 1.0
www.MonolithicPower.com
1
6/15/2005
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