MP2119 2A, 6V Synchronous Step-Down Switching Regulator The Future of Analog IC Technology DESCRIPTION FEATURES 2A Output Current The MP2119 is an internally compensated Input Operation Range: 2.7V to 6V 1.5MHz fixed frequency PWM synchronous step-down regulator. MP2119 operates from a All Ceramic Capacitor Design 2.7V to 6V input and generates an output 1.5MHz Fixed Switching Frequency voltage as low as 0.8V. Adjustable Output from 0.8V to 0.9xV IN Internal Soft-Start The MP2119 integrates a 100m high-side Frequency Synchronization Input switch and a 100m synchronous rectifier for Power Good Output high efficiency without an external Schottky Thermal Shutdown diode. With peak current mode control and Cycle-by-Cycle Current Limiting internal compensation, the MP2119 based Hiccup Short Circuit Protection solution delivers a very compact footprint with a minimum component count. 3mm x 3mm QFN Package The MP2119 is available in a small 3mm x 3mm APPLICATIONS QFN package. P/ASIC/DSP/FPGA Core and I/O Supplies Printers and LCD TVs Network and Telecom Equipment Point of Load Regulators MPS and The Future of Analog IC Technology are Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency vs. Output Current V IN 100 2.7V to 6V C3 47 80 100nF IN BS V = 5V, V =1.8V 1.2 IN OUT V V = 3.3V, V =1.8V POK POK SW IN OUT OUT 1.8V / 2A 60 MP2119 400 40 EN/SYNC FB OFF ON GND 310 20 47 0 0 0.5 1.0 1.5 2.0 OUTPUT CURRENT (A) MP2119 Rev. 0.94 www.MonolithicPower.com 1 4/22/2011 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved. EFFICIENCY (%)MP2119 2A, 6V SYNCHRONOUS STEP-DOWN SWITCHING REGULATOR ORDERING INFORMATION Part Number* Package Top Marking Free Air Temperature (T ) A QFN10 (3mm x 3mm) MP2119DQ U8 -40 C to +85 C * For Tape & Reel, add suffix Z (e.g. MP2119DQZ). For RoHS compliant packaging, add suffix LF (e.g. MP2119DQLFZ) PACKAGE REFERENCE TOP VIEW FB 1 10 EN/SYNC GND 2 9 GND 11 SW 3 8 SW EXPOSED PAD IN 4 7 IN BS 5 6 POK EXPOSED PAD ON BACKSIDE (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC IN to GND .................................... -0.3V to +6.5V QFN10 (3mm x 3mm) ............. 50 ...... 12 ... C/W SW to GND ........................... -0.3V to V + 0.3V IN Notes: SW to GND ............ -2.5V to V +2.5V for <50nS IN 1) Exceeding these ratings may damage the device. FB, EN/SYNC, POK to GND ........... -0.3V to +6.5V 2) The maximum allowable power dissipation is a function of the maximum junction temperature T (MAX), the junction-to- J BS to SW ..................................... -0.3V to +6.5V ambient thermal resistance , and the ambient temperature (2) JA Continuous Power Dissipation (T = +25C) A T . The maximum allowable continuous power dissipation at A any ambient temperature is calculated by P (MAX) = (T D J ....2.5W (MAX)-T )/ . Exceeding the maximum allowable power A JA Junction Temperature ............................... 150C dissipation will cause excessive die temperature, and the Lead Temperature .................................... 260C regulator will go into thermal shutdown. Internal thermal 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) Recommended Operating Conditions operating conditions. 4) Measured on JESD51-7, 4-layer PCB. Supply Voltage V ............................. 2.7V to 6V IN Output Voltage V .................. 0.8V to 0.9 x V OUT IN Operating Junct. Temp (T ) ...... -40C to +125 C J MP2119 Rev. 0.94 www.MonolithicPower.com 2 4/22/2011 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2011 MPS. All Rights Reserved.