MP2482DN-LF

MP2482 5A, 30V, 420kHz Step-Down Converter The Future of Analog IC Technology DESCRIPTION FEATURES The MP2482 is a monolithic step-down switch Wide 4.5V to 30V Operating Input Range mode converter with a built in internal power 5A Output Current MOSFET. It achieves 5A continuous output 50m Internal Power MOSFET Switch current over a wide input supply range with Power Good Indicator excellent load and line regulation. Fixed 420kHz Frequency Synchronizable up to 1.5MHz Current mode operation provides fast transient Cycle-by-Cycle Over Current Protection with response and eases loop stabilization. hiccup Fault condition protection includes cycle-by-cycle Thermal Shutdown current limiting and thermal shutdown. Output Adjustable from 0.81V The MP2482 requires a minimum number of Stable with Low ESR Output Ceramic readily available standard external components Capacitors and is available in 8-pin SOIC package with and Available in 8-Pin SOIC Package and without exposed pad. Thermally Enhanced 8-Pin SOIC Package APPLICATIONS Digital Set Top Boxes Personal Video Recorders Broadband Communications Flat Panel Television and Monitors MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION 8 2 Efficiency vs Output Current V IN BST IN V =3.3V OUT 100 V =5V IN 3 95 VCC 1 V =12V V IN OUT SW 90 MP2482 3.3V 5A D1 6 85 PG B530C 80 V =30V IN VCC 5 7 75 OFF ON EN/SYNC FB GND 70 4 1 234 5 OUTPUT CURRENT (A) MP2482 Rev.1.4 www.MonolithicPower.com 1 9/21/2011 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change 2011 MPS. All Rights Reserved. EFFICIENCY (%)MP2482 5A, 30V, 420kHZ STEP-DOWN CONVERTER ORDERING INFORMATION Part Number Package Top Marking Free Air Temperature(T ) A MP2482DN* SOIC8E MP2482DN -40 C to +85C SOIC8 MP2482DS** MP2482DS * For Tape & Reel, add suffix Z (eg. MP2482DNZ). For RoHS Compliant Packaging, add suffix LF (eg. MP2482DNLFZ) ** For Tape & Reel, add suffix Z (eg. MP2482DSZ). For RoHS Compliant Packaging, add suffix LF (eg. MP2482DSLFZ) PACKAGE REFERENCE TOP VIEW TOP VIEW SW 1 8 IN SW IN 1 8 BST 2 7 EN/SYNC BST EN/SYNC 2 7 VCC 3 6 PG VCC PG 3 6 GND 4 5 FB GND FB 4 5 EXPOSED PAD ON BACKSIDE SOIC8 SOIC8E (4) (1) Thermal Resistance JA JC ABSOLUTE MAXIMUM RATINGS SOIC8E...................................50 ...... 10... C/W Supply Voltage V ....................................... 32V IN V .........................-0.3V(-5V for < 10ns) to 33V SW SOIC8..9045 C/W V ....................................................... V + 6V BS SW Notes: All Other Pins..................................-0.3V to +6V 1) Exceeding these ratings may damage the device. (2) 2) The maximum allowable power dissipation is a function of the Continuous Power Dissipation (T = +25C) A maximum junction temperature T (MAX), the junction-to- J SOIC8E...................................................... 2.5W ambient thermal resistance , and the ambient temperature JA SOIC8 ........................................................ 1.4W T . The maximum allowable continuous power dissipation at A Junction Temperature...............................150C any ambient temperature is calculated by P (MAX) = (T D J Lead Temperature ....................................260C (MAX)-T )/ . Exceeding the maximum allowable power A JA dissipation will cause excessive die temperature, and the Storage Temperature............... -65C to +150 C regulator will go into thermal shutdown. Internal thermal (3) Recommended Operating Conditions shutdown circuitry protects the device from permanent damage. Supply Voltage V ...........................4.5V to 30V IN 3) The device is not guaranteed to function outside of its Operating Junct. Temp (T )...... -40 C to +125 C J operating conditions. 4) Measured on JESD51-7, 4-layer PCB. MP2482 Rev.1.4 www.MonolithicPower.com 2 9/21/2011 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. Preliminary Specifications Subject to Change 2011 MPS. All Rights Reserved.