MP28265EL-LF-P

MP28265 21V, 5A, 1.1MHz Synchronous Step-down Converter The Future of Analog IC Technology DESCRIPTION FEATURES The MP28265 is a high frequency synchronous Wide 4.5V to 21V Operating Input Range rectified step-down switch mode converter with 5A Output Current built in internal power MOSFETs. It offers a Low R (ON) Internal Power MOSFETs DS very compact solution to achieve 5A continuous Proprietary Switching Loss Reduction output current over a wide input supply range Technique with excellent load and line regulation. The Fixed 1.1MHz Switching Frequency MP28265 operates at high efficiency over a Sync from 400kHz to 2MHz External Clock wide output current load range. Internal Compensation Current mode operation provides fast transient OCP Protection and Thermal Shutdown response and eases loop stabilization. Output Adjustable from 0.8V Available in 14-pin QFN3x4 Package Full protection features include OCP and thermal shut down. APPLICATIONS The MP28265 requires a minimum number of Notebook Systems and I/O Power readily available standard external components Networking Systems and is available in a space saving 3mm x 4mm Digital Set Top Boxes 14-pin QFN package. Personal Video Recorders Flat Panel Television and Monitors Distributed Power Systems MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. The information in this datasheet about the product and its associated technologies are proprietary and intellectual property of Monolithic Power Systems and are protected by copyright and pending patent applications TYPICAL APPLICATION FOR NOTEBOOK Efficiency V =1.2V OUT 4.5V-21V 100 1 6 VIN IN BST V =5V IN 90 V =12V IN 80 70 9 PG 2,3,4,5 PG V =21V SW 60 IN R3 MP28265 100K R1 50 11 VCC 4.99K Rt 40 24.9K 8 FB 30 7 R2 20 ON/OFF EN/SYNC 10K 10 NC GND AGND 0 10 12,13 14 0123456 OUTPUT CURRENT(A) MP28265 Rev. 0.92 www.MonolithicPower.com 1 2/26/2020 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. EFFICIENCY(%)MP28265 5A, 21V, SYNCHRONOUS STEP-DOWN CONVERTER WITH INTERNAL MOSFETS ORDERING INFORMATION Part Number* Package Top Marking Free Air Temperature (T ) A MP28265EL 3x4 QFN14 28265 -20 C to +85C * For Tape & Reel, add suffix Z (e.g. MP28265ELZ). For RoHS compliant packaging, add suffix LF (e.g. MP28265ELLFZ) PACKAGE REFERENCE TOP VIEW PIN 1 ID IN AGND SW GND SW GND SW VCC SW NC BST PG EN/SYNC FB EXPOSED PAD ON BACKSIDE (4) (1) Thermal Resistance JA JC ABSOLUTE MAXIMUM RATINGS 3x4 QFN14 .............................. 48 ....... 11 ... C/W Supply Voltage V ........................................ 22V IN V .......................... -0.3V (-5V for<10ns) to 23V SW Notes: V ......................................................... V + 6V 1) Exceeding these ratings may damage the device. BS SW 2) The maximum allowable power dissipation is a function of the All Other Pins .................................. -0.3V to +6V maximum junction temperature TJ(MAX), the junction-to- Operating Temperature .............. -20C to +85C ambient thermal resistance JA, and the ambient temperature (2) TA. The maximum allowable continuous power dissipation at Continuous Power Dissipation (T = +25C) A any ambient temperature is calculated by PD(MAX)=(TJ(MAX)- ......2.6W TA)/ JA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go Junction Temperature ............................... 150 C into thermal shutdown. Internal thermal shutdown circuitry Lead Temperature .................................... 260 C protects the device from permanent damage. 3) The device is not guaranteed to function outside of its Storage Temperature ................ -65C to +150 C operating conditions. 4) Measured on JESD51-7, 4-layer PCB. (3) Recommended Operating Conditions Supply Voltage V ........................... 4.5V to 21V IN Operating Junct. Temp (T ) ...... -20C to +125 C J MP28265 Rev. 0.92 www.MonolithicPower.com 2 2/26/2020 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved.