MP2494 2A, 55V, 100kHz Step-Down Converter DESCRIPTION FEATURES The MP2494 is a monolithic step-down switch Wide 4.5V to 55V Operating Input Range mode converter. It achieves 2A continuous Output Adjustable from 0.8V to 45V output current over a wide input supply range 0.25 Internal Power MOSFET Switch with excellent load and line regulation. Stable with Low ESR Output Ceramic Capacitors MP2494 achieves low EMI signature with well Fixed 100kHz Frequency controlled switching edges. Low EMI signature Fault condition protection includes cyclebycycle Thermal Shutdown current limiting and thermal shutdown. Cycle-by-Cycle Over Current Protection The MP2494 requires a minimum number of Available in SOIC8 and SOIC8E packages readily available standard external components. APPLICATIONS The MP2494 is available in SOIC8 and SOIC8E package. USB Power Supplies Automotive Cigarette Lighter Adapters All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION MP2494 Rev. 1.1 www.MonolithicPower.com 1 4/13/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved. MP2494 2A, 55V, 100kHz STEP-DOWN CONVERTER ORDERING INFORMATION Part Number Package Top Marking MP2494DS* SOIC8 MP2494DS MP2494DN** SOIC8E MP2494DN * For Tape & Reel, add suffix Z (e.g. MP2494DSZ) For RoHS, compliant packaging, add suffix LF (e.g. MP2494DSLFZ). ** For Tape & Reel, add suffix Z (e.g. MP2494DNZ) For RoHS, compliant packaging, add suffix LF (e.g. MP2494DNLFZ). PACKAGE REFERENCE SOIC8 SOIC8E (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC Input Voltage V .......................................... 60V SOIC8 .................................... 90 ...... 45 ... C/W IN V ...................................... 0.3V to V + 0.3V SW IN SOIC8E .................................. 50 ...... 10 ... C/W V .................................................. V + 6.5V BST SW Notes: All Other Pins ............................. 0.3V to +6.5V 1) Exceeding these ratings may damage the device. Junction Temperature .............................. 150C 2) The maximum allowable power dissipation is a function of the maximum junction temperature T (MAX), the junction-to- J Lead Temperature ................................... 260C ambient thermal resistance , and the ambient temperature JA Storage Temperature .............. 65C to +150C T . The maximum allowable continuous power dissipation at A (2) any ambient temperature is calculated by P (MAX) = (T D J Continuous Power Dissipation (T = +25C) A (MAX)-T )/ . Exceeding the maximum allowable power A JA SOIC8 ...................................................... 1.38W dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal SOIC8E ..................................................... 2.5W 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 ............................. 4.5V to 55V operating conditions. IN 4) Measured on JESD51-7, 4-layer PCB. Output Voltage V ........................ 0.8V to 45V OUT Operating Junction Temp. (T ). -40C to +125C J MP2494 Rev. 1.1 www.MonolithicPower.com 2 4/13/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved.