MP2312 24V, 2.1A High Efficiency Synchronous Step-down Converter The Future of Analog IC Technology DESCRIPTION FEATURES Wide 5V to 24V Operating Input Range The MP2312 is a fully integrated high frequency 2.1A Continuous Output Current synchronous rectified step-down switch mode Low R (ON) Internal Power MOSFETs converter. It offers very compact solutions to DS achieve 2.1A continuous output current over a Proprietary Switching Loss Reduction wide input supply range with excellent load and Technique line regulation. The MP2312 operates at high 1% Reference Voltage In Room efficiency over a wide output current load range. Temperature 7ms Internal Soft Start Constant-On-Time (COT) control mode Output Discharge provides fast transient response and eases loop 500kHz Switching Frequency stabilization. Hiccup OCP Protection and Thermal Under voltage lockout is internally set as 4.6 V, Shutdown An open drain power good signal indicates the Auto Retry OVP Protection output is within its nominal voltage range. Output Adjustable from 0.604V to 5.5V Full protection features include OCP and thermal APPLICATIONS shut down. Laptop Computer The converter requires minimum number of Tablet PC external components and is available in QFN16 Networking Systems (3x3mm) package. Personal Video Recorders Flat Panel Television and Monitors Distributed Power Systems All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION 100 95 90 85 80 75 70 0.01 0.1 1 10 MP2312 Rev. 1.01 www.MonolithicPower.com 1 1/21/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP2392MP2312, 24V, HIGH CURRENT SYNCHRONOUS STEP-DOWN CONVERTER ORDERING INFORMATION Part Number Package Top Marking MP2312GQ* QFN16(3X3mm) AHU *For Tape&Reel, add suffix-Z(e.g. MP2312GQ-Z) PACKAGE REFERENCE TOP VIEW AGND EN FB VCC BST 12 11 10 14 13 VIN 1 9 15 SW SW PGND 2 16 SW SW 8 3 4 5 6 7 PG NC NC VOUT NC (5) (1) Thermal Resistance JA JC ABSOLUTE MAXIMUM RATINGS QFN16 (3x3mm).....................70 ......15 ... C/W Supply Voltage V .......................................24V IN V ............................................. -0.3V to 24.3V SW Notes: V (30ns) ........................................ -3V to 28V 1) Exceeding these ratings may damage the device. SW 2) Refer to Configuring the EN Control. V (5ns) .......................................... -6V to 28V SW 3) The maximum allowable power dissipation is a function of the V ..................................................V + 5.5V BST SW maximum junction temperature T(MAX), the junction-to- J ambient thermal resistance , and the ambient temperature JA V ...............................................................12V EN (2) T . The maximum allowable continuous power dissipation at A Enable Current I ................................ 2.5mA EN any ambient temperature is calculated by P (MAX)=(T (MAX)- D J V ...............................................................12V T )/ . Exceeding the maximum allowable power dissipation EN A JA will cause excessive die temperature, and the regulator will go V .............................................. -0.3V to 6.5V OUT into thermal shutdown. Internal thermal shutdown circuitry All Other Pins............................. 0.3V to +5.5V protects the device from permanent damage. (3) 4) The device is not guaranteed to function outside of its Continuous Power Dissipation (T =+25) A operating conditions. QFN16......1.8W 5) Measured on JESD51-7, 4-layer PCB. Junction Temperature..............................150C Lead Temperature ...................................260C Storage Temperature...............-65C to +150 C (4) Recommended Operating Conditions Supply Voltage V ............................. 5V to 22V IN Output Voltage V ................... 0.604V to 5.5V OUT Enable Current I ................................... 1mA EN Operating Junction Temp. (T ). -40C to +125C J MP2312 Rev. 1.01 www.MonolithicPower.com 2 1/21/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved. NOT RECOMMENDED FOR NEW DESIGNS REFER TO MP2392