MP1494DJ-LF-P

MP1494 High-Efficiency, 2A, 16V, 500kHz Synchronous, Step-Down Converter EC R NE O EF W M ER D ME E N TO SI D ED G M N P1 S FO 47 R 6 The Future of Analog IC Technology DESCRIPTION FEATURES The MP1494 is a high-frequency, synchronous, rectified, step-down, switch-mode converter with built-in power MOSFETs. It offers a very compact solution to achieve a 2A continuous output current with excellent load and line regulation over a wide input supply range. The MP1494 has synchronous mode operation for higher efficiency over the output current load range. • • • • • • • • • • • Current-mode operation provides fast transient response and eases loop stabilization. Full protection features include over-current protection and thermal shut down. The MP1494 requires a minimal number of readily-available standard external components, and is available in a space-saving 8-pin TSOT23 package. Wide 4.5V-to-16V Operating Input Range 100mΩ/40mΩ Low RDS(ON) Internal Power MOSFETs High-Efficiency Synchronous Mode Operation Fixed 500kHz Switching Frequency Synchronizes from a 200kHz-to-2MHz External Clock AAM Power-Save Mode Internal Soft-Start OCP Protection and Hiccup Thermal Shutdown Output Adjustable from 0.8V Available in an 8-pin TSOT-23 Package APPLICATIONS • • • • Notebook Systems and I/O Power Digital Set-Top Boxes Flat-Panel Television and Monitors Distributed Power Systems R All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. T TYPICAL APPLICATION 4.5V-16V N O VIN C1 22 EN/ SYNC C3 0.1 R4 2 IN BST 5 10 C4 6 7 R3 90.9k R5 10k MP1494 Rev. 1.04 12/26/2012 EN/SYNC SW VCC FB 1 AAM GND 4 3.3V/2A 3 L1 8 R9 33k R1 40.2k C2 47 R2 13k www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2012 MPS. All Rights Reserved. 1 MP1494 – SYNCHRONOUS STEP-DOWN CONVERTER ORDERING INFORMATION Package TSOT-23-8 Top Marking ABZ EC R NE O EF W M ER D ME E N TO SI D ED G M N P1 S FO 47 R 6 Part Number* MP1494DJ For Tape & Reel, add suffix –Z (e.g. MP1494DJ–Z); For RoHS, compliant packaging, add suffix –LF (e.g. MP1494DJ–LF–Z). PACKAGE REFERENCE Thermal Resistance VIN ..................................................-0.3V to 17V VSW ...................................................................... -0.3V (-5V for