MP1471 High-Efficiency, 3A Peak, 16V, 500kHz Synchronous, Step-Down Converter In a 6-Pin TSOT 23 The Future of Analog IC Technology DESCRIPTION FEATURES The MP1471 is a high-frequency, synchronous, Wide 4.7V-to-16V Operating Input Range rectified, step-down, switch-mode converter 150m/70m Low-R Internal Power DS(ON) with internal power MOSFETs. It offers a very MOSFETs compact solution to achieve a 3A peak output Proprietary Switching-LossReduction current over a wide input supply range, with Technology excellent load and line regulation. The MP1471 High-Efficiency Synchronous-Mode has synchronous-mode operation for higher Operation efficiency over the output current-load range. Fixed 500kHz Switching Frequency Internal AAM Power-Save Mode for High Current-mode operation provides fast transient Efficiency at Light Load response and eases loop stabilization. Internal Soft-Start Protection features include over-current Over-Current Protection and Hiccup protection and thermal shutdown. Thermal Shutdown The MP1471 requires a minimal number of Output Adjustable from 0.8V readily-available, standard, external Available in a 6-pin TSOT-23 package components and is available in a space-saving 6-pin TSOT23 package. APPLICATIONS Game Consoles Digital Set-Top Boxes Flat-Panel Television and Monitors General Purposes All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION 3 6 VIN IN BST U1 100 95 3.3V 2 GND SW VOUT 90 MP1471 85 R1 80 40.2k R3 5 4 EN 75 EN FB 40.2k 70 R2 GND 65 13k 1 60 55 50 0.01 0.1 1 10 MP1471 Rev. 1.01 www.MonolithicPower.com 1 8/27/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP1477MP1471 MP1471 SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS ORDERING INFORMATION Part Number* Package Top Marking MP1471GJ TSOT23-6 AEJ * For Tape & Reel, add suffix Z (e.g. MP1471GJZ) PACKAGE REFERENCE TOP VIEW GND 1 6 BST SW 2 5 EN IN 3 4 FB (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC V ..................................................-0.3V to 17V TSOT-23-6............................. 100..... 55... C/W IN V ...................................................................... SW Notes: -0.3V (-5V for <10ns) to 17V (19V for <10ns) 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the V ......................................................... V +6V BS SW maximum junction temperature T (MAX), the junction-to- J All Other Pins...................................0.3V to 6V ambient thermal resistance , and the ambient temperature JA (2) T . The maximum allowable continuous power dissipation at A Continuous Power Dissipation (T = +25C) A any ambient temperature is calculated by P (MAX) = (T D J ...........................................................1.25W (MAX)-T )/ . Exceeding the maximum allowable power A JA dissipation will cause excessive die temperature, and the Junction Temperature...............................150C regulator will go into thermal shutdown. Internal thermal Lead Temperature ....................................260C shutdown circuitry protects the device from permanent Storage Temperature................. -65C to 150C damage. 3) The device is not guaranteed to function outside of its (3) operating conditions. Recommended Operating Conditions 4) Measured on JESD51-7, 4-layer PCB. Supply Voltage V ...........................4.7V to 16V IN Output Voltage V ......................0.8V to 0.9V OUT IN Operating Junction Temp. (T ). -40C to +125C J MP1471 Rev. 1.01 www.MonolithicPower.com 2 8/27/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP1477