MP2234 High-Efficiency, 2A, 16V, 800kHz Synchronous, Step-Down Converter DESCRIPTION FEATURES The MP2234 is a high-frequency, synchronous, Wide 4.5V-to-16V Operating Input Range rectified, step-down, switch-mode converter 100m/40m Low R Internal Power DS(ON) with built-in power MOSFETs. It offers a very MOSFETs compact solution to achieve a 2A continuous High-Efficiency Synchronous Mode output current with excellent load and line Operation regulation over a wide input supply range. The Fixed 800kHz Switching Frequency MP2234 has synchronous mode operation for Synchronizes from a 300kHz-to-2MHz higher efficiency over the output current load External Clock range. Power-Save Mode at Light Load Current-mode operation provides fast transient External Soft-Start response and eases loop stabilization. OCP Protection and Hiccup Thermal Shutdown Full protection features include over-current Output Adjustable from 0.8V protection and thermal shut down. Available in an 8-pin TSOT-23 Package The MP2234 requires a minimal number of APPLICATIONS readily-available standard external components, and is available in a space-saving 8-pin Notebook Systems and I/O Power TSOT23 package. Digital Set-Top Boxes Flat-Panel Television 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 Quality Assurance. MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION MP2234 Rev. 1.0 www.MonolithicPower.com 1 5/16/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP2332MP2234 SYNCHRONOUS STEP-DOWN CONVERTER ORDERING INFORMATION Part Number* Package Top Marking MP2234GJ TSOT-23-8 AFK * For Tape & Reel, add suffix Z (e.g. MP2234GJZ) PACKAGE REFERENCE (1) (5) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC V ................................................ -0.3V to 17V TSOT-23-8 ............................ 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. V ...................................................... V +6V BST SW 2) About the details of EN pins ABS MAX rating, please refer to (2) Page 9, Enable/SYNC control section. All Other Pins ................................ -0.3V to 6V 3) The maximum allowable power dissipation is a function of the (3) Continuous Power Dissipation (T = +25C) maximum junction temperature T (MAX), the junction-to- A J ambient thermal resistance , and the ambient temperature JA .......................................................... 1.25W T . The maximum allowable continuous power dissipation at A Junction Temperature .............................. 150C any ambient temperature is calculated by P (MAX) = (T D J (MAX)-T )/ . Exceeding the maximum allowable power Lead Temperature ................................... 260C A JA dissipation will cause excessive die temperature, and the Storage Temperature ................. -65C to 150C regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent (4) Recommended Operating Conditions damage. 4) The device is not guaranteed to function outside of its Supply Voltage V .......................... 4.5V to 16V IN operating conditions. Output Voltage V ................ 0.8V to V x 90% OUT IN 5) Measured on JESD51-7, 4-layer PCB. Operating Junction Temp. (T ). -40C to +125C J MP2234 Rev. 1.0 www.MonolithicPower.com 2 5/16/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP2332