MP28115DQ-LF-P Monolithic Power Systems

MP28115 4A, 1.5MHz Synchronous Step-Down Converter The Future of Analog IC Technology DESCRIPTION FEATURES The MP28115 is an internally compensated 4A Output Current 1.5MHz fixed frequency PWM synchronous Input Operation Range: 2.7V to 6V step-down regulator. MP28115 operates from a 1.5% Output Accuracy 2.7V to 6V input and generates an adjustable 60m Internal Power MOSFET Switches output voltage from 0.8V to 0.9xV at up to 4A IN All Ceramic Capacitor Design load current. Up to 95% Efficiency The MP28115 integrates a 60m high-side 1.5MHz Fixed Switching Frequency switch and a 60m synchronous rectifier for Internal Soft-Start high efficiency without an external Schottky Frequency Synchronization Input diode. With peak current mode control and Power Good Output internal compensation, the MP28115 based Cycle-by-Cycle Current Limiting solution achieves minimum footprint and Hiccup Short Circuit Protection component count. Fault condition protection Thermal Shutdown includes Hiccup short-circuit protection, cycle- 3mm x 3mm 10-lead QFN Package by-cycle current limiting and thermal shutdown. Other features include frequency APPLICATIONS synchronization input, internal soft-start and P/ASIC/DSP/FPGA Core and I/O Supplies power good output. Printers and LCD TVs The MP28115 is available in a small 3mm x Network and Telecom Equipment 3mm 10-lead QFN package. Point of Load Regulators MPS and The Future of Analog IC Technology are Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency vs Output Current 95 Vin C4 C1 2.7V to 6V C2 100nF 4,7 5 10uF 10uF L1 90 IN BS 1uH 6 3,8 5V to 1.8V POK SW Vout 5V to 3.3V 85 R4 1.8V/4A D1 MP28115 R1 5V to 2.5V 100k B0530 400k 10 1 EN/SYNC FB 80 R3 GND C3 R2 100k 2,9 316k 47uF 75 70 0 1234 OUTPUT CURRENT (A) MP28115 Rev. 0.92 www.MonolithicPower.com 1 1/6/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved. EFFICIENCY (%)MP28115 4A, 1.5MHz SYNCHRONOUS STEP-DOWN CONVERTER (1) PACKAGE REFERENCE ABSOLUTE MAXIMUM RATINGS IN to GND ....................................-0.3V to +6.5V SW to GND........................... -0.3V to V + 0.3V IN TOP VIEW SW to GND............ -2.5V to V +2.5V for <50nS IN FB, EN/SYNC, POK to GND...........-0.3V to +6.5V FB 1 10 EN/SYNC BS to SW .....................................-0.3V to +6.5V Junction Temperature...............................150C GND 2 9 GND Lead Temperature ....................................260C SW 3 8 SW Storage Temperature ...............-65C to +150C IN 4 7 IN (2) Recommended Operating Conditions BS 5 6 POK Supply Voltage V ............................. 2.7V to 6V IN Output Voltage V .................0.8V to 0.9 x V OUT IN EXPOSED PAD ON BACKSIDE Operating Temperature ..............-40C to +85C (3) Thermal Resistance JA JC QFN10 (3mm x 3mm)............. 50...... 12... C/W Part Number* Package Temperature Notes: QFN10 MP28115DQ 40 C to +85C 1) Exceeding these ratings may damage the device. (3mm x 3mm) 2) The device is not guaranteed to function outside of its operating conditions. For Tape & Reel, add suffix Z (e.g. MP28115DQZ) * 3) Measured on approximately 1 square of 1 oz copper. For RoHS Compliant Packaging, add suffix LF (e.g. MP28115DQLFZ) (4) ELECTRICAL CHARACTERISTICS V = V = 3.6V, T = +25 C, unless otherwise noted. IN EN A Parameters Condition Min Typ Max Units V = V EN IN Supply Current 750 A V = 0.85V FB Shutdown Current V = 0V, V = 6V 1 A EN IN IN Undervoltage Lockout Rising Edge 2.59 2.69 V Threshold IN Undervoltage Lockout 210 mV Hysteresis T = +25C 0.788 0.800 0.812 V A Regulated FB Voltage 40C T +85C 0.780 0.800 0.820 V A FB Input Current V = 0.85V 50 nA FB EN High Threshold 40C T +85C 1.6 V A EN Low Threshold 40C T +85C 0.4 V A Internal Soft-Start Time 120 s High-Side Switch On-Resistance I = 300mA 60 m SW Low-Side Switch On-Resistance I = 300mA 60 m SW V = 0V V = 6V EN IN SW Leakage Current 10 10 A V = 0V or 6V SW BS Under Voltage Lockout 1.8 V Threshold MP28115 Rev. 0.92 www.MonolithicPower.com 2 1/6/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2016 MPS. All Rights Reserved.