MP4433 36V, 3A, Low Quiescent Current, Synchronous, Step-Down Converter DESCRIPTION FEATURES Wide 3.3V to 36V Operating Input Range The MP4433 is a synchronous, step-down, 3A Continuous Output Current switching regulator with programmable 1A Low Shutdown Mode Current frequency (350kHz to 2.5MHz) and integrated, internal, high-side and low-side power 10A Sleep Mode Quiescent Current MOSFETs. The MP4433 provides up to 3A of Internal 90m High-Side and 40m Low- highly efficient output current with current mode Side MOSFETs control for fast loop response. 350kHz to 2.5MHz Programmable Switching Frequency The wide 3.3V to 36V input range Fixed Output Options: 3.3V, 3.8V, 5V accommodates a variety of step-down applications in automotive input environments. Synchronize to External Clock, Selectable The MP4433 is ideal for battery-powered In-Phase or 180 Out-of-Phase applications due to its extremely low quiescent Power Good Indicator current. Programmable Soft-Start Time 80ns Minimum On Time The MP4433 employs advanced asynchronous Selectable Forced CCM or AAM mode (AAM) to achieve high efficiency in light- load condition by scaling down the switching Low Dropout Mode frequency to reduce switching and gate driving Over-Current Protection with Valley-Current losses. Detection and Hiccup Available in a QFN-16 (3mmx4mm) Standard features include soft start, external Package clock synchronization, enable control, and power good indication. High-duty cycle and low APPLICATIONS dropout mode are provided for automotive cold- crank. Automotive Systems Industrial Power Systems Over-current protection (OCP) with valley- current detection is employed to prevent the All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under inductor current from running away. Hiccup Quality Assurance. MPS and The Future of Analog IC Technology are mode reduces the average current greatly in registered trademarks of Monolithic Power Systems, Inc. short-circuit condition. Thermal shutdown provides reliable and fault-tolerant operation. The MP4433 is available in a QFN-16 (3mmx4mm) package. TYPICAL APPLICATION VIN 3.3 to 36V VIN BST EN SYNC VOUT SW MP4433 PHASE GND FREQ FB PG VCC SS BIAS MP4433 Rev. 1.01 www.MonolithicPower.com 1 1/12/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved. MP4433 - 36V, 3A, LOW IQ, SYNCHRONOUS STEP-DOWN CONVERTER ORDERING INFORMATION Part Number* Package Top Marking MP4433GL QFN-16 (3mmx4mm) See Below * For Tape & Reel, add suffix Z (e.g. MP4433GLZ) TOP MARKING MP: MPS prefix Y: Year code W: Week code 4433 : 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) MP4433 Rev. 1.01 www.MonolithicPower.com 2 1/12/2018 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2018 MPS. All Rights Reserved.