MP2483 2.5A, 55V, Programmable Frequency White LED Driver The Future of Analog IC Technology DESCRIPTION FEATURES The MP2483 is a 55V, 2.5A, white LED driver 2.5A Maximum Output Current suitable for either step-down or inverting Unique Step-up/down Operation (Buck- step-up/down applications. It achieves 2.5A Boost Mode) peak output current over a wide input supply Wide 4.5V to 55V Operating Input Range for range with excellent load and line regulation. Step-Down Applications (Buck Mode) Current mode operation provides fast transient 0.28 Internal Power MOSFET Switch response and eases loop stabilization. Fault Adjustable Switching Frequency condition protection includes thermal shutdown, Analog and PWM Dimming cycle-by-cycle peak current limiting, open 0.198V Reference Voltage strings protection and output short circuit 5A Shutdown Mode protection. No Minimum LED Required The MP2483 incorporates both DC and PWM Stable with Low ESR Output Ceramic dimming onto a single control pin. The separate Capacitors input reference ground pin allows for direct Cycle-by-Cycle Over Current Protection enable and/or dimming control for a positive to Thermal Shutdown Protection negative power conversion. Open Strings Protection The MP2483 requires a minimum number of Output Short Circuit Protection readily available standard external components Available in 10-Pin 3x3 QFN Package and and is available in 10-pin 3mm x 3mm QFN 14-Pin SOIC14 Package package and 14-pin SOIC14 packages. APPLICATIONS General LED Illuminations LCD Backlight Panels Handheld Computers Automotive Internal Lighting Portable Multimedia Players Portable GPS Devices All MPS parts are lead-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 R4 VIN VDD OVP BST R3 L1 C3 4.5V<VIN<55V C1 4.7 100nF 10 SW MP2483 D1 C2 B360A 2.2 EN/DIM ON OFF INGND FB DC or PWM Input VSS COMP RSET R1 C5 C4 R2 1nF 1nF MP2483 Rev. 1.0 www.MonolithicPower.com 1 12/25/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved. MP2483 2.5A, 55V, PROGRAMABLE FREQUENCY WHITE LED DRIVER ORDERING INFORMATION Part Number* Package Top Marking Free Air Temperature (T ) A MP2483DQ 3x3 QFN10 9M -40C to +85C MP2483DS SOIC14 MP2483DS -40C to +85C * For Tape & Reel, add suffix Z (e.g. MP2483DQZ). For RoHS compliant packaging, add suffix LF (e.g. MP2483DQLFZ) PACKAGE REFERENCE TOP VIEW TOP VIEW NC 1 14 NC VDD 1 10 SW VDD 2 13 SW VSS 2 9 BST VSS 3 12 BST OVP 3 8 INGND OVP 4 11 INGND FB 4 7 EN/DIM FB 5 10 EN/DIM COMP 5 6 RSET COMP 6 9 REST NC 7 8 NC QFN10 SOIC14 (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC Supply Voltage V V .............................60V 3x3 QFN10.............................50 ......12 ... C/W DD SS V V .................................... -0.3V to 60.3V SW SS SOIC14...................................86 ......38 ... C/W V .................................................... V + 6V BST SW Notes: V V ............................... -0.3V to +6V EN/Dim INGND 1) Exceeding these ratings may damage the device. V V ................................... -0.3V to 60V INGND SS 2) The maximum allowable power dissipation is a function of the maximum junction temperature T (MAX), the junction-to- Other pins V ............................. -0.3V to +6V J SS (2) ambient thermal resistance , and the ambient temperature JA Continuous Power Dissipation (T = +25C) A T . The maximum allowable continuous power dissipation at A any ambient temperature is calculated by P (MAX) = (T D J 3x3 QFN10 ................................................2.5W (MAX)-T )/ . Exceeding the maximum allowable power A JA SOIC14......................................................1.4W dissipation will cause excessive die temperature, and the Junction Temperature..............................150C regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent Lead Temperature ...................................260C damage. Storage Temperature...............-65C to +150 C 3) The device function is not guaranteed outside of the recommended operating conditions. (3) 4) Measured on JESD51-7, 4-layer PCB. Recommended Operating Conditions Supply Voltage V V ................ 4.5V to 55V DD SS Operating Junct. Temp (T )......-40C to +125 C J MP2483 Rev. 1.0 www.MonolithicPower.com 2 12/25/2013 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2013 MPS. All Rights Reserved.