TM
EV2109DQ-00A
Dual 800mA, 6V, 1.2MHz Synchronous
Step-Down Converter Evaluation Board
The Future of Analog IC Technology
TM
DESCRIPTION
The EV2109DQ-00A is the evaluation board for
the MP2109. The MP2109 contains two
independent 1.2MHz constant frequency,
current mode, PWM step-down converters.
Each converter integrates a main switch and a
synchronous rectifier for high efficiency without
an external Schottky diode. The MP2109 is
ideal for powering portable equipment that runs
from a single cell Lithium-Ion (Li+) battery. Each
converter can supply 800mA of load current
from a 2.5V to 6V input voltage. The output
voltage can be regulated as low as 0.6V. It can
also run at 100% duty cycle for low dropout
applications.
FEATURES
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Up to 95% Efficiency
800mA Load Current on Each Channel
2.5V to 6V Input Voltage Range
Output Voltage as Low as 0.6V
Cellular and Smart Phones
Microprocessors and DSP Core Supplies
PDAs
MP3 Players
Digital Still and Video Cameras
Portable Instruments
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
ELECTRICAL SPECIFICATIONS
Parameter
Input Voltage
Output Voltage 1
Output Voltage 2
Load Max
Symbol
V
IN1/IN2
V
OUT1
V
OUT2
I
OUT1/OUT2
Value
2.5 to 6
1.8
1.2
800
Units
V
V
V
mA
EV2109DQ-00A EVALUATION BOARD
Efficiency vs
Load Current
100
V
OUT
=1.8V
90
EFFICIENCY (%)
80
70
60
V
OUT
=1.2V
(L x W x H) 2.0” x 1.6” x 0.4”
(5.0cm x 4.0cm x 1.0cm)
Board Number
Package
MPS IC Number
MP2109DQ
QFN10
EV2109DQ-00A
(3mm x 3mm)
EV2109DQ-00A Rev. 1.1
10/14/2005
50
0.0
0.2
0.4
0.6
LOAD CURRENT (A)
0.8
EV2109_EC01
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
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