MP2365 3A, 28V, 1.4MHz Step-Down Converter The Future of Analog IC Technology DESCRIPTION FEATURES The MP2365 is a 1.4MHz step-down regulator 3A Continuous Output Current, 4A Peak with a built-in power MOSFET. It achieves 3A Output Current continuous output current over a wide input Programmable Soft-Start supply range with excellent load and line 100m Internal Power MOSFET Switch regulation. Stable with Low ESR Output Ceramic Capacitors Current mode operation provides fast transient Up to 91% Efficiency response and eases loop stabilization. 20 A Shutdown Mode Fault condition protection includes cycle-by- Fixed 1.4MHz Frequency cycle current limiting and thermal shutdown. Thermal Shutdown Adjustable soft-start reduces the stress on the Cycle-by-Cycle Over Current Protection input source at turn-on. In shutdown mode, the Wide 4.75V to 28V Operating Input Range regulator draws 20 A of supply current. Output is Adjustable From 0.92V to 21V The MP2365 is available in an 8-pin SOIC Under Voltage Lockout package with an exposed pad, and requires a APPLICATIONS minimum number of readily available external components to complete a 3A step-down DC to Distributed Power Systems DC converter solution. Battery Chargers Pre-Regulator for Linear Regulators EVALUATION BOARD REFERENCE All MPS parts are lead-free and adhere to the RoHS directive. For MPS green Board Number Dimensions status, please visit MPS website under Quality Assurance. MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic EV2365DN-00A 2.0 x 1.9 x 0.4 Power Systems, Inc. TYPICAL APPLICATION Efficiency Curve INPUT 100 C5 1 2 V =5V IN BS L1 OUTPUT OUT 7 3 OPEN = EN SW 3.3V 90 AUTOMATIC 3A MP2365 STARTUP 8 5 SS FB V =3.3V C1 OUT GND COMP R1 80 CERAMIC 4 6 D1 C2 C3 R2 C6 CERAMIC 70 C4 OPEN R3 V =12V IN 60 0 0.5 1.0 1.5 2.0 2.5 3.0 LOAD CURRENT (A) MP2365 Rev. 1.01 www.MonolithicPower.com 1 2/26/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. EFFICIENCY (%)MP2365 3A, 28V, 1.4MHz STEP-DOWN CONVERTER ORDERING INFORMATION Part Number* Package Top Marking Free Air Temperature (T ) A MP2365DN SOIC8N MP2365DN 40 C to +85C * For Tape & Reel, add suffix Z (eg. MP2365DNZ). For RoHS compliant packaging, add suffix LF (eg. MP2365DNLFZ) PACKAGE REFERENCE TOP VIEW BS 1 8 SS IN 2 7 EN SW 3 6 COMP GND 4 5 FB EXPOSED PAD CONNECT TO PIN 4 (4) (1) Thermal Resistance JA JC ABSOLUTE MAXIMUM RATINGS SOIC8N ................................... 50 ....... 10 ... C/W Supply Voltage V ....................... 0.3V to +30V IN Switch Voltage V .............. 0.5V to V + 0.3V SW IN Notes: Boost Voltage V .......... V 0.3V to V + 6V BS SW SW 1) Exceeding these ratings may damage the device. 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- (2) Continuous Power Dissipation (T = +25C) A ambient thermal resistance JA, and the ambient temperature ......2.5W TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD (MAX) = (TJ Junction Temperature ............................... 150 C (MAX)-TA)/ JA. Exceeding the maximum allowable power Lead Temperature .................................... 260 C dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal Storage Temperature .............. 65C to +150 C shutdown circuitry protects the device from permanent (3) damage. Recommended Operating Conditions 3) The device is not guaranteed to function outside of its Input Voltage V ............................ 4.75V to 28V IN operating conditions. 4) Measured on JESD51-7, 4-layer PCB. Ambient Operating Temp ........... 40C to +85C MP2365 Rev. 1.01 www.MonolithicPower.com 2 2/26/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved.