MP2172CGQFU-Z

MP2172C 5.5V, 2A, Sync Step-Down Converter with Output Discharge in UTQFN Package DESCRIPTION FEATURES The MP2172C is a monolithic, step-down, switch-mode converter with built-in internal power MOSFETs. It achieves 2A of continuous output current from a 2.38V to 5.5V input voltage range with excellent load and line regulation. The output voltage can be regulated as low as 0.6V.         The constant-on-time (COT) control scheme provides fast transient response and eases loop stabilization. Fault protections include cycle-bycycle current limiting and thermal shutdown. The MP2172C is ideal for a wide range of applications, including high-performance DSPs, wireless power, portable and mobile devices, and other low-power systems. The MP2172C requires a minimal number of readily available, standard external components, and is available in ultra-small 1.2mmx1.6mm UTQFN packages.      Fixed-Frequency PWM Mode 1.1MHz Switching Frequency EN for Power Sequencing 1% FB Accuracy Wide 2.38V to 5.5V Operating Input Range Output Adjustable from 0.6V Up to 2A Output Current 75mΩ and 45mΩ Internal Power MOSFET Switches 100% Duty On Output Discharge VOUT Over-Voltage Protection (OVP) Short-Circuit Protection (SCP) with Hiccup Mode Available in a UTQFN (1.2mmx1.6mm) Package APPLICATIONS       Wireless/Networking Cards Portable Instruments Battery-Powered Devices Low-Voltage I/O System Power Multi-Function Printers Solid-State Drives All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are registered trademarks of Monolithic Power Systems, Inc. or its subsidiaries. TYPICAL APPLICATION Efficiency vs. Output Current VIN=5V, L=1μH (DCR=27mΩ) Efficiency (%) 100 90 80 70 60 50 40 Vin=5V,Vo=1.2V Vin=5V,Vo=1.8V 30 20 10 Vin=5V,Vo=2.5V Vin=5V,Vo=3.3V 0 0 MP2172C Rev.1.0 4/22/2019 0.5 1 Output Current (A) 1.5 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 2 1 MP2172C – 2A, SYNCHRONOUS STEP-DOWN SWITCHER ORDERING INFORMATION Part Number* MP2172CGQFU Package UTQFN-6 (1.2mmx1.6mm) Top Marking See Below * For Tape & Reel, add suffix –Z (e.g. MP2172CGQFU–Z). TOP MARKING HU: Product code of MP2172CGQFU LL: Lot number PACKAGE REFERENCE TOP VIEW GND 1 6 OUT SW 2 5 FB VIN 3 4 EN Adjustable Version MP2172CGQFU MP2172C Rev.1.0 4/22/2019 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2019 MPS. All Rights Reserved. 2 MP2172C – 2A, SYNCHRONOUS STEP-DOWN SWITCHER ABSOLUTE MAXIMUM RATINGS (1) Supply voltage (VIN) ..................................... 6.5V VSW ................................ -0.3V (-5V for