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SS23 Scheda tecnica(PDF) 1 Page - Monolithic Power Systems |
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SS23 Scheda tecnica(HTML) 1 Page - Monolithic Power Systems |
1 / 10 page MP1580 2A, 380 KHz Step-Down Converter MP1580 Rev. 3.0 www.MonolithicPower.com 1 12/5/2005 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2005 MPS. All Rights Reserved. The Future of Analog IC Technology TM TM DESCRIPTION The MP1580 is a monolithic step-down switch mode converter with a built in internal power MOSFET. It achieves 2A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. In shutdown mode the regulator draws 23µA of supply current. The MP1580 requires a minimum number of readily available standard external components. A synchronization pin allows the part to be driven to 600KHz. EVALUATION BOARD REFERENCE Board Number Dimensions EV0007 2.3”X x 1.5”Y x 0.5”Z FEATURES • 2A Output Current • 0.18Ω Internal Power MOSFET Switch • Stable with Low ESR Output Ceramic Capacitors • Up to 95% Efficiency • 23µA Shutdown Mode • Fixed 380KHz Frequency • Thermal Shutdown • Cycle-by-Cycle Over Current Protection • Wide 4.75 to 25V Operating Input Range • Output Adjustable from 1.22V to 21V • Programmable Under Voltage Lockout • Frequency Synchronization Input • Available in an 8-Pin SO Package APPLICATIONS • Distributed Power Systems • Battery Chargers • Pre-Regulator for Linear Regulators “MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION MP1580_TAC_S01 MP1580 SW IN BS FB SYNC COMP GND EN OUTPUT 2.5V / 2A INPUT 4.75V to 25V OPEN NOT USED OFF ON C6 OPEN C3 2.2nF C5 10nF D1 6 5 3 1 2 7 8 4 95 90 85 80 75 70 OUTPUT CURRENT (A) MP1580_TAC_EC01 Efficiency vs Output Current Voltage 0 0.5 1.5 12 VOUT = 5.0V VOUT = 3.3V VOUT = 2.5V VIN = 10V |
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