MPQ4468 36V, 3.5A, Low-Quiescent Current, Asynchronous Step-Down Converter, AEC-Q100 Qualified DESCRIPTION FEATURES The MPQ4468 is a frequency-programmable Wide 3.3V-to-36V Operating Input Range (350kHz to 2.5MHz), asynchronous, step-down 3.5A Continuous Output Current switching regulator with an integrated internal 1A Low Shutdown Mode Current high-side power MOSFET. It provides up to 10A Sleep Mode Quiescent Current 3.5A of highly efficient output current with Internal 90m High-Side MOSFET current mode control for fast loop response. 350kHz to 2.5MHz Programmable Switching Frequency The wide 3.3V to 36V input range accommodates Synchronize to External Clock a variety of step-down applications in automotive input environments, and is ideal for battery- Selectable In-Phase or 180 Out-of-Phase powered applications due to its extremely low Power Good Indicator quiescent current. Programmable Soft-Start Time 80ns Minimum On Time The MPQ4468 employs AAM (advanced Low Dropout Mode asynchronous modulation) mode, which helps Over-Current Protection and Hiccup Mode achieve high efficiency in light-load condition by Available in a QFN-16 (3mmx4mm) scaling down the switching frequency to reduce Package switching and gate driving losses. AEC-Q100 Grade 1 Standard features include soft start (SS), external clock sync, enable (EN) control, and a APPLICATIONS power good (PG) indicator. High duty cycle and Automotive Systems low dropout mode are provided for automotive Industrial Power Systems cold-crank condition. All MPS parts are lead-free, halogen-free, and adhere to the RoHS Over-current protection (OCP) is employed to directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are prevent the inductor current from running away. registered trademarks of Monolithic Power Systems, Inc. or its subsidiaries. Hiccup mode greatly reduces the average current in short-circuit condition. Thermal shutdown provides reliable, fault-tolerant operation. The MPQ4468 is available in a QFN-16 (3mmx4mm) package. TYPICAL APPLICATION Efficiency vs. Load Current 3.3 to 36V V IN V = 5V, f = 500kHz OUT SW 95 VIN BST EN SYNC V SW OUT MPQ4468 PHASE 85 GND FREQ FB VIN=12V PG VCC VIN=24V SS VIN=36V BIAS 75 10 100 1000 LOAD CURRENT (mA) MPQ4468 Rev. 1.0 www.MonolithicPower.com 1 9/3/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. EFFICIENCY (%)MPQ4468 36V, 3.5A, LOW I , ASYNCHRONOUS STEP-DOWN CONVERTER Q ORDERING INFORMATION Part Number* Package Top Marking MSL Rating** MPQ4468GL-AEC1 QFN-16 (3mmx4mm) See Below 1 * For Tape & Reel, add suffix Z (e.g. MPQ4468GLAEC1Z). ** Moisture Sensitivity Level Rating TOP MARKING MP: MPS prefix Y: Year code W: Week code 4468: First four digits of the part number LLL: Lot number PACKAGE REFERENCE TOP VIEW FREQ FB SS AGND 16 15 14 13 PHASE 12 VCC 1 VIN 2 11 BST SW SW 3 10 4 9 PGND PGND 5 6 7 8 EN SYNC PG BIAS QFN-16 (3mmx4mm) MPQ4468 Rev. 1.0 www.MonolithicPower.com 2 9/3/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved.