MP1430 3A, 28V, 385KHz Step-Down Converter MP1430 Rev. 1.0 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 DESCRIPTION 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 resp***e 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 ***ailable 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 ? ***ailable in 8-Pin SOIC Package APPLICATI*** ? Distributed Power Systems ? Battery Chargers ? Pre-Regulator for Linear Regulators ? Flat Panel TVs ? Set-Top Boxes ? Cigarette Lighter Powered Devices
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