MP1497S High-Efficiency, 3A, 16V, 500kHz Synchronous, Step-Down Converter The Future of Analog IC Technology DESCRIPTION FEATURES The MP1497S is a high-frequency, Wide 4.5V-to-16V Operating Input Range synchronous, rectified, step-down switch mode 120m/50m Low R Internal Power DS(ON) converter with built in internal power MOSFETs. MOSFETs It offers a very compact solution to achieve 3A Proprietary Switching-LossReduction continuous output current with excellent load Technique and line regulation over a wide input supply High-Efficiency Synchronous Mode range. The MP1497S has synchronous mode Operation operation for higher efficiency over the output Fixed 500kHz Switching Frequency current load range. Can Synchronize to a 300kHz-to-2MHz External Clock Current-mode operation provides a fast Externally-Programmable Soft-Start transient response and eases loop stabilization. OCP and Hiccup Protective features include over-current Thermal Shutdown protection, thermal shutdown, and external SS Output Adjustable from 0.8V control. Available in an 8-pin TSOT23 Package The MP1497S requires a minimal number of APPLICATIONS readily-available external components and is available in a space-saving 8-pin TSOT23 Notebook Systems and I/O Power package. Digital Set-Top Boxes Flat-Panel Televisions and Monitors Distributed Power Systems 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 VIN IN BST 4.5V-16V C4 C1 22 MP1497S 3.3V/3A SW EN/SYNC L1 EN C2 R1 R9 40.2k VCC 33k FB C6 0.1 R2 SS 13k GND C5 22nF MP1497S Rev. 1.01 www.MonolithicPower.com 1 9/7/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2015 MPS. All Rights Reserved. MP1497S SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS ORDERING INFORMATION Part Number* Package Top Marking MP1497SGJ TSOT23-8 AJT * For Tape & Reel, add suffix Z (e.g. MP1497SGJZ)PACKAGE REFERENCE TOP VIEW SS FB 1 8 IN VCC 2 7 SW EN/SYNC 3 6 GND BST 4 5 (1) (5) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC V ..................................................-0.3V to 17V TSOT23-8.............................. 100..... 55... C/W IN V ...-0.3V (-5V for <10ns) to 17V (19V for 5ns) SW Notes: V ........................................................ V +6V BST SW 1) Exceeding these ratings may damage the device. (2) 2) About the details of the EN pins ABS MAX rating, please All Other Pins............................... -0.3V to 6V refer to Page 9, Enable section. (3) Continuous Power Dissipation (T = +25C) 3) The maximum allowable power dissipation is a function of the A maximum junction temperature T (MAX), the junction-to- J ...........................................................1.25W ambient thermal resistance , and the ambient temperature JA Junction Temperature...............................150C T . The maximum allowable continuous power dissipation at A any ambient temperature is calculated by P (MAX) = (T Lead Temperature ....................................260C D J (MAX)-T )/ . Exceeding the maximum allowable power A JA Storage Temperature................. -65C to 150C dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal (4) Recommended Operating Conditions shutdown circuitry protects the device from permanent damage. Supply Voltage V ...........................4.5V to 16V IN 4) The device is not guaranteed to function outside of its Output Voltage V ............... 0.8V to V x D OUT IN MAX operating conditions. Operating Junction Temp. (T ). -40C to +125C 5) Measured on JESD51-7, 4-layer PCB. J MP1497S Rev. 1.01 www.MonolithicPower.com 2 9/7/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2015 MPS. All Rights Reserved.