MP2403 3A, 32V, 250kHz Integrated Synchronous Step-Down Converter The Future of Analog IC Technology DESCRIPTION FEATURES The MP2403 is a monolithic synchronous buck 3A Output Current regulator. The device integrates a 150m Wide 4.6V to 32V Operating Input Range high-side MOSFET and an 80m low-side Integrated MOSFET Switches MOSFET that provides 3A continuous load Output Adjustable from 0.80V to 28V current over a wide operating input voltage of Up to 95% Efficiency 4.6V to 32V. Current mode control provides fast Programmable Soft-Start transient response and cycle-by-cycle current Stable with Low ESR Ceramic Output Capacitors limit. Fixed 250kHz Frequency An adjustable soft-start prevents inrush current Cycle-by-Cycle Over Current Protection at turn-on. In shutdown mode, the supply Input Under Voltage Lockout current drops to 1 A. Thermally Enhanced 8-Pin SOIC Package This device, available in an 8-pin SOIC APPLICATIONS package, provides a very compact system Distributed Power Systems solution with minimal reliance on external Pre-Regulator for Linear Regulators components. Notebook Computers EVALUATION BOARD REFERENCE MPS and The Future of Analog IC Technology are Registered Trademarks of Board Number Dimensions Monolithic Power Systems, Inc. EV2403DN-00A 2.0X x 1.5Y x 0.5Z TYPICAL APPLICATION Efficiency vs Output Current 100 INPUT V =12V 4.6V to 32V IN 90 80 V =24V 2 1 IN V =5V 70 IN ON IN BS OUTPUT 7 3 EN SW 3.3V OFF 60 3A MP2403 8 5 50 SS FB V =32V IN GND COMP 40 4 6 30 20 10 V =3.3V OUT 0 01 2 3 OUTPUT CURRENT(A) MP2403 Rev.1.0 www.MonolithicPower.com 1 1/21/2020 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. EFFICIENCY(%)MP2403 3A, 32V, 250kHz INTEGRATED SYNCHRONOUS STEP-DOWN CONVERTER ORDERING INFORMATION Part Number* Package Top Marking Free Air Temperature (T ) A SOIC8N MP2403DN MP2403DN -40 C to +85 C (Exposed Pad) * For Tape & Reel, add suffix Z (e.g. MP2403DNZ). For Lead Free, add suffix LF (e.g. MP2403DNLFZ) PACKAGE REFERENCE TOP VIEW BS 1 8 SS IN 2 7 EN SW 3 6 COMP GND 4 5 FB CONNECT EXPOSED PAD AND GND PIN TO A CERTAIN GROUND PLANE (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC Supply Voltage V ........................ -0.3V to +35V IN SOIC8N ................................... 50 ...... 10 ... C/W Switch Voltage V .................. -1V 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. All Other Pins ................................. 0.3V to +6V 2) The maximum allowable power dissipation is a function of the (2) maximum junction temperature TJ (MAX), the junction-to- 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 ............................... 150C (MAX)-T )/ . Exceeding the maximum allowable power A JA Lead Temperature .................................... 260C dissipation will cause excessive die temperature, and the Storage Temperature ............... -65C to +150C regulator will go into thermal shutdown. Internal thermal 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 .............................. 4.6V to 32V IN operating conditions. 4) Measured on JESD51-7, 4-layer PCB. Output Voltage V ....................... 0.80V to 28V OUT Operating Junct. Temp (T ) ....... -40C to +125C J MP2403 Rev.1.0 www.MonolithicPower.com 2 1/21/2020 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved.