MPQ4473GL-Z

MPQ4473-AEC1 High-Efficiency, Fast-Transient, 3.5A, 36V Synchronous, Step-Down Converter with AEC-Q100 Qualified DESCRIPTION FEATURES The MPQ4473 is a fully integrated, highfrequency, synchronous, rectified, step-down, switch-mode converter. It offers a compact solution to achieve a 3.5A, continuous-output current over a wide input-supply range with excellent load and line regulation. It provides fast, transient response and good stability for wide input-supply and load range. The MPQ4473 operates at high efficiency over a wide-output-current load range.   MPQ4473 has full protection features including, short-circuit protection (SCP), over-current protection (OCP), under-voltage protection (UVP), and thermal shutdown (TSD). The MPQ4473 requires minimal, readily available, standard, external components, and is available in a compact 3mmx4mm, 20-pin, QFN package.           Wide 4.5V-to-36V Operating Input Range Guaranteed 3.5A, Continuous Output Current Internal 40mΩ High-Side, 20mΩ Low-Side Power MOSFETs Proprietary Switching-Loss-Reduction Technology 1% Reference Voltage Programmable Soft-Start Time Low Drop-Out Mode 200kHz-to-1MHz Switching Frequency SCP, OCP, UVP, and Thermal Shutdown Output Adjustable from 0.8V to 0.9×VIN Available in a 3mmx4mm, 20-pin, QFN Package Available in AEC-Q100 Grade 1 APPLICATIONS       Notebook Systems and I/O Power Automotive Systems Networking Systems Industrial Supplies Optical Communications Systems Distributed Power and POL Systems All MPS parts are lead-free, halogen 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 MPQ4473 Rev. 1.01 www.MonolithicPower.com 5/24/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 1 MPQ4473–HIGH-EFFICIENCY, FAST-TRANSIENT, SYNCHRONOUS, STEP-DOWN CONVERTER, AEC-Q100 QUALIFIED ORDERING INFORMATION Part Number* Package Top Marking MPQ4473GL MPQ4473GL-AEC1 QFN-20 (3mmx4mm) See Below * For Tape & Reel, add suffix –Z (e.g. MPQ4473GL–Z); TOP MARKING MP: MPS prefix: Y: year code; W: week code: 4473: first four digits of the part number; LLL: lot number; PACKAGE REFERENCE QFN20 (3mm×4mm) MPQ4473 Rev. 1.01 www.MonolithicPower.com 5/24/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 2 MPQ4473–HIGH-EFFICIENCY, FAST-TRANSIENT, SYNCHRONOUS, STEP-DOWN CONVERTER, AEC-Q100 QUALIFIED ABSOLUTE MAXIMUM RATINGS (1) Supply Voltage VIN .......................................40V VSW ....................................... -0.3V to VIN + 0.3V VBST .....................................................VSW + 6V VPGOOD....................................-0.3V to VCC+0.6V All Other Pins ................................. -0.3V to +6V (2) Continuous Power Dissipation (TA = +25°C) ………………………………… …………….2.6W Operating Junction Temperature ............. 150°C Lead Temperature ................................... 260°C Storage Temperature ............... -65°C to +150°C Recommended Operating Conditions (3) Supply Voltage VIN .......................... 4.5V to 36V Output Voltage VOUT.................... 0.8V to 0.9×VIN Operating Junction Temp. (TJ). -40°C to +125°C Thermal Resistance (4) θJA θJC QFN-20 (3mm×4mm) ............. 48 ...... 10 ... °C/W Notes: 1) Absolute maximum ratings are rated under room temperature unless otherwise noted. Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature TJ(MAX), the junction-toambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD(MAX)=(TJ(MAX)TA)/θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7, 4-layer PCB. MPQ4473 Rev. 1.01 www.MonolithicPower.com 5/24/2016 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2016 MPS. All Rights Reserved. 3 MPQ4473–HIGH-EFFICIENCY, FAST-TRANSIENT, SYNCHRONOUS, STEP-DOWN CONVERTER, AEC-Q100 QUALIFIED ELECTRICAL CHARACTERISTICS VIN = 24V, VEN = 2V, TJ = -40C to +125C, unless otherwise noted. Typical values are at TJ = 25C. Parameters Supply Current (Shutdown) Supply Current (Quiescent) HS Switch On Resistance (5) LS Switch On Resistance Condition IIN IIN VEN = 0V VFB = 0.95V SW LKG Current Limit One-Shot On Time ILIMIT tON (5) (5) tFB Fold-Back Off Time (5) tFB (5) tOC Feedback Voltage VIN=12V, RFREQ=30kΩ 4.2 230 EN Rising Threshold EN Falling Threshold EN Threshold Hysteresis EN Input Current VIN Under-Voltage Lockout Threshold Rising VIN Under-Voltage Lockout Threshold Falling VIN Under-Voltage Lockout Threshold Hysteresis VCC Regulator VCC Load Regulation (5) Thermal Shutdown ILIM=1(HIGH), FB>50%VREF ILIM=1(HIGH), FB