MP8352 3V-6V Input, 6A, 600kHz Step-Down Converter with Synchronizable Gate Driver The Future of Analog IC Technology DESCRIPTION FEATURES The MP8352 is a monolithic step-down switch 3V to 6V Operating Input Range mode converter with a built in internal power 6A Continuous Output Current MOSFET. It achieves 6A continuous output 45m Internal Power MOSFET Switch current over a wide input supply range with External Power Supply Vcc excellent load and line regulation. Power Good Indicator Synchronous Gate Driver Delivers up to Current mode operation provides fast transient 95% Efficiency response and eases loop stabilization. Fixed 600KHz Frequency Fault condition protection includes cycle-by-cycle Synchronizable Up to 1.5MHz current limiting and thermal shutdown. Cycle-by-Cycle Over Current Protection with The MP8352 requires a minimum number of Hiccup readily available standard external components Thermal Shutdown and is available in a space saving 3mm x 4mm Output Adjustable from 0.8V 14-pin QFN package. Stable with Low ESR Output Ceramic Capacitors Available in a 3mm x 4mm 14-Pin QFN Package APPLICATIONS Point of Load Regulator in Distributed Power System 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 4, 5, 6 Efficiency vs. 11 V IN BST IN Output Current 100 L1 2.2uH 12 8, 9, 10 External V VCC SW CC 90 MP8352 M2 13 2 BG PGOOD PG 80 V CC 70 Vin=3V 1 3 FB EN/SYNC OFF ON Vin=5V GND Vin=6V 60 14 0 123 45 6 LOAD CURRENT(A) MP8352 Rev. 1.0 www.MonolithicPower.com 1 3/11/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2010 MPS. All Rights Reserved. EFFICIENCY(%)MP8352 3V to 6V INPUT, 6A, 600KHz STEP-DOWN WITH SYNCHRONOUS GATE DRIVER ORDERING INFORMATION Part Number* Package Top Marking Free Air Temperature (T ) A MP8352DL 3x4 QFN14 8352 40 C to +85C * For Tape & Reel, add suffix Z (eg. MP8352DLZ). For RoHS compliant packaging, add suffix LF (eg. MP8352DLLFZ) PACKAGE REFERENCE TOP VIEW FB 1 14 GND PG 2 13 BG EN/SYNC 3 12 VCC IN 4 11 BST IN 5 10 SW IN 6 9 SW N/C 7 8 SW EXPOSED PAD ON BACKSIDE (4) (1) Thermal Resistance JA JC ABSOLUTE MAXIMUM RATINGS Supply Voltage V ...................................... 6.5V IN 3x4 QFN14..............................48.......11.... C/W V ....................... -0.3V(-5V for < 10ns) to 7.5V SW Notes: V -V .......................................................... 6V BS SW 1) Exceeding these ratings may damage the device. All Other Pins.................................0.3V to +6V 2) The maximum allowable power dissipation is a function of the (2) maximum junction temperature T , the junction-to-ambient Continuous Power Dissipation (T = +25C) J (MAX) A thermal resistance , and the ambient temperature T . The JA A ....2.6W maximum allowable continuous power dissipation at any Junction Temperature...............................150C ambient temperature is calculated by P = (T -T )/ . D (MAX) J (MAX) A JA Lead Temperature ....................................260C Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into Storage Temperature.............. 65 C to +150 C thermal shutdown. Internal thermal shutdown circuitry protects (3) Recommended Operating Conditions the device from permanent damage. 3) The device is not guaranteed to function outside of its operating Supply Voltage V Vcc .......................3V to 6V IN conditions. Operating Junct. Temp (T )..... 40 C to +125 C J 4) Measured on JESD51-7, 4-layer PCB. MP8352 Rev. 1.0 www.MonolithicPower.com 2 3/11/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2010 MPS. All Rights Reserved.