MP2119DQ-LF-Z

MP2119 2A, 6V Synchronous Step-Down Switching Regulator The Future of Analog IC Technology DESCRIPTION FEATURES The MP2119 is an internally compensated 1.5MHz fixed frequency PWM synchronous step-down regulator. MP2119 operates from a 2.7V to 6V input and generates an output voltage as low as 0.8V. • • • • • • • • • • • • The MP2119 integrates a 100mΩ high-side switch and a 100mΩ synchronous rectifier for high efficiency without an external Schottky diode. With peak current mode control and internal compensation, the MP2119 based solution delivers a very compact footprint with a minimum component count. The MP2119 is available in a small 3mm x 3mm QFN package. 2A Output Current Input Operation Range: 2.7V to 6V All Ceramic Capacitor Design 1.5MHz Fixed Switching Frequency Adjustable Output from 0.8V to 0.9xVIN Internal Soft-Start Frequency Synchronization Input Power Good Output Thermal Shutdown Cycle-by-Cycle Current Limiting Hiccup Short Circuit Protection 3mm x 3mm QFN Package APPLICATIONS • • • • µP/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 VIN 2.7V to 6V 47 POK IN C3 100nF BS POK VOUT 1.8V / 2A SW MP2119 OFF ON 1.2 EN/SYNC GND 400 FB 310 47 EFFICIENCY (%) 100 80 VIN = 5V, VOUT =1.8V VIN = 3.3V, VOUT =1.8V 60 40 20 0 0 MP2119 Rev. 0.94 4/22/2011 0.5 1.0 1.5 OUTPUT CURRENT (A) www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. 2.0 1 MP2119 – 2A, 6V SYNCHRONOUS STEP-DOWN SWITCHING REGULATOR ORDERING INFORMATION Part Number* MP2119DQ Package QFN10 (3mm x 3mm) Top Marking Free Air Temperature (TA) U8 -40°C to +85°C * For Tape & Reel, add suffix –Z (e.g. MP2119DQ–Z). For RoHS compliant packaging, add suffix –LF (e.g. MP2119DQ–LF–Z) PACKAGE REFERENCE TOP VIEW FB 1 GND 2 SW 3 IN 4 BS 5 11 EXPOSED PAD 10 EN/SYNC 9 GND 8 SW 7 IN 6 POK EXPOSED PAD ON BACKSIDE ABSOLUTE MAXIMUM RATINGS (1) IN to GND .................................... -0.3V to +6.5V SW to GND ........................... -0.3V to VIN + 0.3V SW to GND ............ -2.5V to VIN+2.5V for