Datasheet MP2307 (Monolithic Power Systems)

MP2307 3A, 23V, 340KHz Synchronous Rectified Step-Down Converter The Future of Analog IC Technology DESCRIPTION FEATURES
The MP2307 is a monolithic synchronous buck • 3A Continuous Output Current regulator. The device integrates 100mΩ 4A Peak Output Current MOSFETS that provide 3A of continuous load • Wide 4.75V to 23V Operating Input Range current over a wide operating input voltage of • Integrated 100mΩ Power MOSFET Switches 4.75V to 23V. Current mode control provides • Output Adjustable from 0.925V to 20V fast transient response and cycle-by-cycle • Up to 95% Efficiency current limit. • Programmable Soft-Start An adjustable soft-start prevents inrush current • Stable with Low ESR Ceramic Output Capacitors at turn-on and in shutdown mode, the supply • Fixed 340KHz Frequency current drops below 1µA. • Cycle-by-Cycle Over Current Protection This device, available in an 8-pin SOIC • Input Under Voltage Lockout package, provides a very compact system • Thermally Enhanced 8-Pin SOIC Package solution with minimal reliance on external
APPLICATIONS
components. • Distributed Power Systems
EVALUATION BOARD REFERENCE
• Networking Systems
Board Number Dimensions
• FPGA, DSP, ASIC Power Supplies EV2307DN-00A 2.0”X x 1.5”Y x 0.5”Z • Green Electronics/Appliances • Notebook Computers MP2393 “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. O
TYPICAL APPLICATION
RECOMMENDED FOR C5 10nF
Efficiency vs
NEW DESIGNS INPUT
Load Current
4.75V to 23V 100 V 95 IN = 5V V 2 1 90 IN = 12V
IN BS
OUTPUT 7 3 85 NOT
EN SW
3.3V (%) 3A 80
MP2307
VIN = 23V 8 5 75 REFER T
SS FB GND COMP
70 4 6 65 EFFICIENCY C3 60 3.9nF 55 500.1 1.0 10 LOAD CURRENT (A) MP2307_EC01 MP2307_TAC01 MP2307 Rev. 1.9 www.MonolithicPower.com
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5/28/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2008 MPS. All Rights Reserved.