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| The Future of Analog IC Technology aS The MP1580 is a monolithic step-down switch mode converter with a built in internal power atIt achieves 2A continuous output MOSFET. .D current over a wide input supply range with w excellent load and line regulation. w wCurrent mode operation provides fast transient DESCRIPTION response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. In shutdown mode the regulator draws 23A 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. ee h 4U t om .c TM MP1580 2A, 380 KHz Step-Down Converter TM FEATURES * * * * * * * * * * * * * * * * 2A Output Current 0.18 Internal Power MOSFET Switch Stable with Low ESR Output Ceramic Capacitors Up to 95% Efficiency 23A 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 Distributed Power Systems Battery Chargers Pre-Regulator for Linear Regulators EVALUATION BOARD REFERENCE Board Number EV0007 Dimensions 2.3"X x 1.5"Y x 0.5"Z TYPICAL APPLICATION INPUT 4.75V to 25V OFF ON OPEN NOT USED 8 MP1580 SYNC GND 4 FB COMP 6 5 D1 EFFICIENCY (%) w 7 w 2 IN EN .D w 1 BS SW t a 3 S a e h APPLICATIONS t e U 4 .c m o "MPS" and "The Future of Analog IC Technology" are Trademarks of Monolithic Power Systems, Inc. C5 10nF 95 90 85 80 75 70 Efficiency vs Output Current Voltage VOUT = 5.0V VOUT = 3.3V VOUT = 2.5V OUTPUT 2.5V / 2A C6 OPEN C3 2.2nF 0 MP1580_TAC_S01 0.5 OUTPUT CURRENT (A) MP1580_TAC_EC01 MP1580 Rev. 2.9w 8/11/2005 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2005 MPS. All Rights Reserved. w w w .D at aS 1 ee h 4U t om .c 2 VIN = 10V 1.5 1 |
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