MP2360 1.8A, 24V, 1.4MHz Step-Down Converter The Future of Analog IC Technology DESCRIPTION FEATURES The MP2360 is a monolithic step-down switch 2.5A Peak Output Current mode converter with a built-in internal power 1.8A Continuous Output Current MOSFET. It achieves 1.8A continuous output 0.3 Internal Power MOSFET Switch current over a wide input supply range with Stable with Low ESR Output Ceramic excellent load and line regulation. Current mode Capacitors operation provides fast transient response and 0.1A Shutdown Mode eases loop stabilization. Fault condition Fixed 1.4MHz Frequency protection includes cycle-by-cycle current limiting Thermal Shutdown and thermal shutdown. Cycle-by-Cycle Over Current Protection The MP2360 requires a minimum number of Wide 4.5V to 24V Operating Input Range readily available standard external components. Output Adjustable from 0.81V to 15V The MP2360 is available in a 2mm x 2mm QFN8 Available in 2x2 QFN8 Packages package. APPLICATIONS EVALUATION BOARD REFERENCE Broadband Communications Equipment Board Number Dimensions Digital Entertainment Systems EV2360DG-00B 1.8X x 1.6Y x 0.4Z Distributed Power Systems Battery Charger Pre-Regulator for Linear Regulators MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency vs Load Current 100 3 7 V IN BST IN CB VOUT = 3.3V 90 10nF 2 V OUT SW 3.3V MP2360 VOUT = 2.5V 80 D1 B230A 70 4 5 EN OFF ON FB GND 60 6 VIN = 12V 50 0 0.5 1.0 1.5 2.0 LOAD CURRENT (A) MP2360 Rev. 0.91 www.MonolithicPower.com 1 5/19/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2008 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP2331H EFFICIENCY (%)MP2360 1.8A, 24V, 1.4MHz STEP-DOWN CONVERTER (1) PACKAGE REFERENCE ABSOLUTE MAXIMUM RATINGS Supply Voltage V ....................................... 26V IN V ....................................... 0.3V to V + 0.3V SW IN TOP VIEW V ....................................................... V + 6V BS SW All Other Pins.................................0.3V to +6V NC 1 8 NC Junction Temperature...............................150C Lead Temperature ....................................260C SW 2 7 BST Storage Temperature ..............65 C to +150 C IN 3 6 GND (2) Recommended Operating Conditions EN 4 5 FB Supply Voltage V ........................... 4.5V to 24V IN Output Voltage V ...................... 0.81V to 15V OUT QFN8 Operating Temperature .............40 C to +85 C (2mm x 2mm) (3) Thermal Resistance JA JC 2x2 QFN8 ............................... 80...... 16... C/W Part Number* Package Temperature Notes: MP2360DG 2x2 QFN8 40 C to +85C 1) Exceeding these ratings may damage the device. For Tape & Reel, add suffix Z (eg. MP2360DGZ) 2) The device is not guaranteed to function outside of its * For RoHS compliant packaging, add suffix LF (eg. operating conditions. MP2360DGLFZ) 3) Measured on approximately 1 square of 1 oz copper. ELECTRICAL CHARACTERISTICS V = 12V, T = +25 C, unless otherwise noted. IN A Parameters SymbolCondition Min Typ Max Units Feedback Voltage V 0.790 0.810 0.830 V 4.5V V 24V FB IN Feedback Current I V = 0.8V 10 nA FB FB (4) Switch On-Resistance R 0.3 DS(ON) Switch Leakage V = 0V, V = 0V 0 10 A EN SW (4) Current Limit Duty Cycle = 40% 2.0 2.5 A Oscillator Frequency f V = 0.6V 1.4 MHz SW FB Fold-back Frequency V = 0V 460 KHz FB Maximum Duty Cycle V = 0.6V 87 % FB (4) Minimum On-Time t 100 ns ON Under-Voltage Lockout Threshold Rising 2.5 2.8 3.1 V Under-Voltage Lockout Threshold Hysteresis 150 mV EN Input Low Voltage 0.4 V EN Input High Voltage 1.2 V V = 2V 2.1 EN EN Input Current A V = 0V 0.01 EN Supply Current (Shutdown) V = 0V 0.1 1.0 A EN Supply Current (Quiescent) V = 2V, V = 1V 0.8 1.0 mA EN FB (4) Thermal Shutdown 150 C Note: 4) Guaranteed by design. MP2360 Rev. 0.91 www.MonolithicPower.com 2 5/19/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. 2008 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP2331H