TM
EV2309DS-00A
1A, 23V, 340KHz Synchronous
Step-Down Converter Evaluation Board
The Future of Analog IC Technology
TM
GENERAL DESCRIPTION
The EV2309DS-00A is an evaluation board for
the MP2309, a monolithic synchronous buck
regulator. The device integrates 140mΩ
MOSFETS that provide 1A continuous load
current over a wide operating input voltage of
4.75V to 23V. Current mode control provides
fast transient response and cycle-by-cycle
current limit.
An adjustable soft-start prevents inrush current
at turn-on. In shutdown mode, the supply
current is only 1µA.
This device, available in an 8-pin SOIC
package, provides a very compact system
solution with minimal reliance on external
components.
FEATURES
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Up to 1A Output Current
Wide 4.75V to 23V Operating Input Range
Monolithic Synchronous Buck with 140mΩ
High-Side and Low-Side FETs
Fixed 340KHz Frequency
All Ceramic Input and Output Capacitors
Programmable Soft-Start
Programmable Input Under Voltage Lockout
Distributed Power Systems
Networking Systems
FPGA, DSP, ASIC Power Systems
Green Electronics/ Appliances
Notebook Computers
APPLICATIONS
ELECTRICAL SPECIFICATIONS
Parameter
Supply Voltage
Output Voltage
Output Current
Symbol
V
IN
V
OUT
I
OUT
Value
4.75 to 23
3.3
0 to 1
Units
V
V
A
“MPS” and “The Future of Analog IC Technology” are Trademarks of
Monolithic Power Systems, Inc.
EV2309DS-00A EVALUATION BOARD
Efficiency vs
Load Current
100
90
EFFICIENCY (%)
80
70
60
50
40
30
20
V
IN
= 23V
V
IN
= 5V
V
IN
= 12V
(L x W x H) 2.0” x 1.5” x 0.5”
(5.0cm x 3.8cm x 1.2cm)
Board Number
EV2309DS-00A
MPS IC Number
MP2309
0
0.25
0.5
0.75
LOAD CURRENT (A)
1.0
MP2309-EC01
EV2309DS-00A Rev. 1.3
9/29/2005
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2005 MPS. All Rights Reserved.
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MPS [ MONOLITHIC POWER SYSTEMS ]
