MP2172C 5.5V, 2A, Sync Step-Down Converter with Output Discharge in UTQFN Package DE SCRIPTION FEATURES The MP2172C is a monolithic, step-down, Fixed-Frequency PWM Mode switch-mode converter with built-in internal 1.1MHz Switching Frequency power MOSFETs. It achieves 2A of continuous EN for Power Sequencing output current from a 2.38V to 5.5V input 1% FB Accuracy voltage range with excellent load and line Wide 2.38V to 5.5V Operating Input Range regulation. The output voltage can be regulated Output Adjustable from 0.6V as low as 0.6V. Up to 2A Output Current The constant-on-time (COT) control scheme 75m and 45m Internal Power MOSFET provides fast transient response and eases loop Switches stabilization. Fault protections include cycle-by- 100% Duty On cycle current limiting and thermal shutdown. Output Discharge VOUT Over-Voltage Protection (OVP) The MP2172C is ideal for a wide range of Short-Circuit Protection (SCP) with Hiccup applications, including high-performance DSPs, Mode wireless power, portable and mobile devices, Available in a UTQFN (1.2mmx1.6mm) and other low-power systems. Package The MP2172C requires a minimal number of readily available, standard external components, APPLICATIONS and is available in ultra-small 1.2mmx1.6mm Wireless/Networking Cards UTQFN packages. 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 V =5V,L=1H(DCR=27m) IN 100 90 80 70 60 50 Vin=5V,Vo=1.2V 40 30 Vin=5V,Vo=1.8V 20 Vin=5V,Vo=2.5V 10 Vin=5V,Vo=3.3V 0 00.5 11.5 2 Output Current (A) MP2172C Rev.1.0 www.MonolithicPower.com 1 4/22/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. Efficiency (%)MP2172C 2A, SYNCHRONOUS STEP-DOWN SWITCHER ORDERING INFORMATION Part Number* Package Top Marking MP2172CGQFU UTQFN-6 (1.2mmx1.6mm) See Below * For Tape & Reel, add suffix Z (e.g. MP2172CGQFUZ). TOP MARKING HU: Product code of MP2172CGQFU LL: Lot number PACKAGE REFERENCE TOP VIEW 1 6 GND OUT 2 5 FB SW 4 EN 3 VIN Adjustable Version MP2172CGQFU MP2172C Rev.1.0 www.MonolithicPower.com 2 4/22/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved.