MP1470 High-Efficiency, 2A, 16V, 500kHz Synchronous, Step-Down Converter In a 6-Pin TSOT 23 The Future of Analog IC Technology DESCRIPTION FEATURES The MP1470 is a high-frequency, synchronous, Wide 4.7V-to-16V Operating Input Range rectified, step-down, switch-mode converter 163m/86m Low-R Internal Power DS(ON) with internal power MOSFETs. It offers a very MOSFETs compact solution to achieve a 2A continuous Proprietary Switching-LossReduction output current over a wide input supply range, Technique with excellent load and line regulation. The High-Efficiency Synchronous-Mode MP1470 has synchronous-mode operation for Operation higher efficiency over the output current-load Fixed 500kHz Switching Frequency range. Internal AAM Power-Save Mode for High Efficiency at Light Load Current-mode operation provides fast transient Internal Soft-Start response and eases loop stabilization. Over-Current Protection and Hiccup Protection features include over-current Thermal Shutdown protection and thermal shutdown. Output Adjustable from 0.8V The MP1470 requires a minimal number of Available in a 6-pin TSOT-23 package readily-available, standard, external APPLICATIONS components and is available in a space-saving 6-pin TSOT23 package. 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 6 100 VIN BST IN U1 95 90 3.3V/2A 2 GND SW VOUT 85 MP1470 R1 80 40.2k R3 75 5 4 EN EN FB 70 75k GND R2 65 13k 1 60 55 50 0.01 0.1 1 10 MP1470 Rev. 1.02 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 MP1476MP1470MP1470 MP1470 SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS ORDERING INFORMATION Part Number* Package Top Marking MP1470GJ TSOT23-6 ADJ * For Tape & Reel, add suffix Z (e.g. MP1470GJZ) PACKAGE REFERENCE TOP VIEW 1 6 BST GND 2 5 SW EN 3 4 FB IN (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 MP1470 Rev. 1.02 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 MP1476