联系人：陈江涛
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电话：13027925162
地址： 中国 广东 深圳市深圳市龙华新区
mp1430 3a, 28v, 385khz step-down converter mp1430 rev. 1.0 www.monolithicpower.com 1 11/1/2005 mps proprietary information. unauthorized photocopy and duplication prohibited. ? 2005 mps. all rights reserved. the future of analog ic technology tm tm deion the mp1430 is a step-down regulator with an internal power mosfet. it achieves 3a 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. adjustable soft-start reduces the stress on the input source at turn-on. in shutdown mode the regulator draws 20μa of supply current. the mp1430 requires a minimum number of readily available external components to complete a 3a step down dc to dc converter solution. features ? 3a output current ? programmable soft-start ?
110m? internal power mosfet switch ? stable with low esr output ceramic capacitors
? up to 95% efficiency ? 20μa shutdown mode ? fixed 385khz frequency ? thermal shutdown ? cycle-by-cycle over current protection ? wide 6v to 28v operating input range ? output adjustable from 1.22v ? under voltage lockout ? available in 8-pin soic package applications ? distributed power systems ? battery chargers ? pre-regulator for linear regulators ? flat panel tvs ? set-top boxes ? cigarette lighter powered devices
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