MP2307 Datasheet, PDF (1/11 Pages) Monolithic Power Systems – 3A, 23V, 340KHz Synchronous Rectified Step-Down Converter

TM
The Future of Analog IC Technology ^TM
MP2307
3A, 23V, 340KHz Synchronous Rectified
Step-Down Converter
DESCRIPTION
The MP2307 is a monolithic synchronous buck
regulator. The device integrates 100mΩ
MOSFETS that provide 3A of 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 and in shutdown mode, the supply
current drops below 1µA.
This device, available in an 8-pin SOIC
package, provides a very compact system
solution with minimal reliance on external
components.
EVALUATION BOARD REFERENCE
Board Number
EV2307DN-00A
Dimensions
2.0”X x 1.5”Y x 0.5”Z
FEATURES
• 3A Continuous Output Current,
4A Peak Output Current
• Wide 4.75V to 23V Operating Input Range
• Integrated 100mΩ Power MOSFET Switches
• Output Adjustable from 0.925V to 20V
• Up to 95% Efficiency
• Programmable Soft-Start
• Stable with Low ESR Ceramic Output Capacitors
• Fixed 340KHz Frequency
• Cycle-by-Cycle Over Current Protection
• Input Under Voltage Lockout
• Thermally Enhanced 8-Pin SOIC Package
APPLICATIONS
• Distributed Power Systems
• Networking Systems
• FPGA, DSP, ASIC Power Supplies
• Green Electronics/Appliances
• Notebook Computers
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
INPUT
4.75V to 23V
C5
10nF
2
1
7
IN
EN
BS ₃
SW
MP2307
8
SS
5
FB
GND
COMP
4
6
C3
3.9nF
OUTPUT
3.3V
3A
MP2307_TAC01
Efficiency vs
Load Current
100
95
90 ^{VIN = 12V}
V_IN = 5V
85
80
V_IN = 23V
75
70
65
60
55
50
0.1
1.0
10
LOAD CURRENT (A)
MP2307_EC01
MP2307 Rev. 1.7
www.MonolithicPower.com
1
3/14/2006
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