MP2110 3A Synchronous Step-Down Converter with Programmable Input Current Limit The Future of Analog IC Technology DESCRIPTION FEATURES The MP2110 is a monolithic step-down switch High Efficiency: Up to 95% mode converter with integrated input current limit High Current Step-Down Converter switch. The step-down converter integrates a 1.5MHz Switching Frequency main switch and a synchronous rectifier for high 70m /50m Internal Power MOSFET efficiency without an external Schottky diode. 3A Available Load Current The input average current limit can be externally 100% Low Dropout Operation programmed. It is ideal for powering portable Output Voltage as Low as 0.6V equipment that is powered by an USB port. The Input Current Limit Switch MP2110 can supply 3A of load current from a Programmable Current Limit: 0.3-3A 3.3V to 5.4V continuous input voltage with 10% Current Limit Accuracy when excellent load and line regulation. The MP2110 Current Limit > 1A input can support up to 12V transient and clamp Wide Input Voltage Range: 3.3V to 5.4V the current limit switch output at 5.65V (Typical). 12V Input Transient Tolerance The Constant-On-time (COT) control scheme 70m Internal MOSFET provides fast transient response high light-load OVP Clamp Protection efficiency and easy loop stabilization. Fault Independent Enable Pins condition protection includes cycle-by-cycle External Temperature Sense & Protection current limit and thermal shutdown. Internal Thermal Fault Protection The MP2110 is available in a space-saving Space Saving 3mm x 3mm QFN14 Package 14-pin 3mmx3mm QFN package. APPLICATIONS Wireless Modem Data Cards USB Powered Devices Cellular and Smart Phones Portable Instruments All MPS parts are lead-free and adhere to the RoHS directive. MPS and The Future of Analog IC Technology are Registered Trademarks of Monolithic Power Systems, Inc. ADAM (Analog Digital Adaptive Modulation), AAM (.) are Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION ON OFF SYSIN ENSYS R SET R4 C1 1.2k 31.6k RSET 10 F NTC R NTC OUT 100k SW L1 REGIN R1 C3 1H C2A C2 + 340k 22F 330 F 22F FB R2 PGND, EXPOSED PAD 68k AGND ENREG OFF ON MP2110 Rev. 1.11 www.MonolithicPower.com 1 9/26/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved. MP2110 3A SYNCHRONOUS BUCK CONVERTER WITH INPUT CURRENT LIMIT ORDERING INFORMATION Part Number* Package Top Marking QFN-14 (3mm x 3mm) MP2110GQ AFQ * For Tape & Reel, add suffix Z (e.g. MP2110GQZ). PACKAGE REFERENCE TOP VIEW QFN14 (3x3mm) (1) (4) ABSOLUTE MAXIMUM RATINGS Thermal Resistance JA JC V , V to GND ..................... -0.3V to +13V QFN-14 (3mmx3mm) ............. 50 ...... 12 ... C/W SYSIN NTC V to GND ............................. -0.3V to +6.5V REGIN Notes: V to GND....................... -0.3V to V +0.3V SW REGIN 1) Exceeding these ratings may damage the device. All other pins to GND .................. -0.3V to +6.5V 2) The maximum allowable power dissipation is a function of the (2) maximum junction temperature T (MAX), the junction-to- J Continuous Power Dissipation (T = +25C) A ambient thermal resistance , and the ambient temperature JA ............................................................ 2.5W T . The maximum allowable continuous power dissipation at A any ambient temperature is calculated by P (MAX) = (T D J Junction Temperature ............................ +150C (MAX)-T )/ . Exceeding the maximum allowable power A JA Lead Temperature ................................. +260C dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal Storage Temperature .............. -65C to +150 C shutdown circuitry protects the device from permanent (3) damage. Recommended Operating Conditions 3) The device is not guaranteed to function outside of its Continuous Supply Voltage V 3.3V to 5.4V operating conditions. SYSIN .. 4) Measured on JESD51-7, 4-layer PCB. Transient Supply Voltage V ................... 12V SYSIN Output Voltage V .......................... 0.6V to 5V OUT Operating Junction Temp. (T ). -40C to +125C J MP2110 Rev. 1.11 www.MonolithicPower.com 2 9/26/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2014 MPS. All Rights Reserved.