MP2012 Low Voltage, 2.7-6V Input,1.5A, 1.2MHz Synchronous Step-Down Converter The Future of Analog IC T echnology DESCRIPTION FEATURES 2.7-6V Input Operation Range The MP2012 is a fully integrated, internally Output Adjustable from 0.8V to VIN compensated 1.2MHz fixed frequency PWM step-down converter. It is ideal for powering 1 A Max Shutdown Current. portable equipment that runs from a single cell Up to 95% Efficiency Lithium-Ion (Li+) Battery, with an input range 100% Duty Cycle for Low Dropout from 2.7V to 6V. The MP2012 can provide up to Applications 1.5A of load current with output voltage as low 1.2MHz Fixed Switching Frequency as 0.8V. It can also operate at 100% duty cycle Stable with Low ESR Output Ceramic for low dropout applications. With peak current Capacitors mode control and internal compensation, the Thermal Shutdown MP2012 is stable with ceramic capacitors and Cycle-by-Cycle Over Current Protection small inductors. Fault condition protection Short Circuit Protection includes cycle-by-cycle current limiting and Available in QFN6 (3x3mm) thermal shutdown. MP2012 is available in a small QFN6 (3x3mm) APPLICATIONS package. DVD+/-RW Drives Smart Phones PDAs Digital Cameras Portable Instruments For MPS green status, please visit MPS website under Quality Assurance. MPS and The Future of Analog IC Technology are Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency vs. Load Current V IN 100 2.7V to 6V 4 6 EN 90 PVIN EN 80 V OUT L1 1.8V/1.5A Vin=5V 5 3 70 VIN MP2012 SW Vin=3V C1 60 R1 50 2 Rt GND FB 1 40 C2 30 R2 20 10 0 0 0.3 0.6 0.9 1.2 1.5 LOAD CURRENT(A) MP2012 Rev. 1.01 www.MonolithicPower.com 1 9/22/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP2152 EFFICIENCY (%) MP2012 1.5A SYNCHRONOUS STEP-DOWN CONVERTER ORDERING INFORMATION Part Number* Package Top Marking Free Air Temperature (T ) A MP2012DQ QFN6(3x3mm) 9E 40 C to +85C * For Tape & Reel, add suffix Z (e.g. MP2012DQZ). For RoHS compliant packaging, add suffix LF (e.g. MP2012DQLFZ) PACKAGE REFERENCE TOP VIEW FB 1 6 EN GND 2 5 VIN SW 3 4 PVIN Exposed Pad Connected to GND (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC PVIN, VIN to GND......................0.3V to + 6.5V QFN6 (3x3mm) .......................50 ...... 12... C/W SW to GND .......................... 0.3V to V + 0.3V IN Notes: EN, FB to GND ...........................0.3V to +6.5V 1) Exceeding these ratings may damage the device. Operating Temperature............. 40C to +85C 2) The maximum allowable power dissipation is a function of the (2) maximum junction temperature T (MAX), the junction-to- J Continuous Power Dissipation (T = +25C) A ambient thermal resistance , and the ambient temperature JA ....2.5W T . The maximum allowable continuous power dissipation at A any ambient temperature is calculated by P (MAX) = (T D J Junction Temperature...............................150C (MAX)-T )/ . Exceeding the maximum allowable power A JA Lead Temperature ....................................260C 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 (3) damage. Recommended Operating Conditions 3) The device is not guaranteed to function outside of its Supply Voltage V .............................2.7V to 6V IN operating conditions. 4) Measured on JESD51-7, 4-layer PCB. Operating Junct. Temp (T )..... 40C to +125C J MP2012 Rev. 1.01 www.MonolithicPower.com 2 9/22/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP2152