MP4430 36V, 3.5A, Low Quiescent Current, Synchronous, Step-Down Converter DESCRIPTION FEATURES The MP4430 is a frequency-programmable Wide 3.3V to 36V Operating Input Range (350kHz to 2.5MHz), synchronous, step-down, 3.5A Continuous Output Current switching regulator with integrated internal high- 1A Low Shutdown Mode Current side and low-side power MOSFETs. It provides 10A Sleep Mode Quiescent Current up to 3.5A of highly efficient output current with Internal 90m High-Side and 40m Low- current mode control for fast loop response. Side MOSFETs 350kHz to 2.5MHz Programmable The wide 3.3V to 36V input range accommodates Switching Frequency a variety of step-down applications in automotive Fixed Output Options: 3.3V, 3.8V, 5V input environments and is ideal for battery- powered applications due to its extremely low Synchronize to External Clock quiescent current. Selectable In-Phase or 180 Out-of-Phase Power Good (PG) Indicator The MP4430 employs advanced asynchronous Programmable Soft-Start (SS) Time mode (AAM), which helps achieve high 80ns Minimum On Time efficiency in light-load condition by scaling down Selectable Forced CCM or AAM the switching frequency to reduce switching and Low Dropout Mode gate driving losses. Over-Current Protection (OCP) with Valley- Standard features include soft start (SS), Current Detection and Hiccup external clock synchronization, enable (EN) Available in a QFN-16 (3mmx4mm) control, and a power good (PG) indicator. High- Package duty cycle and low dropout mode are provided for automotive cold-crank condition. APPLICATIONS Over-current protection (OCP) with valley- Automotive Systems current detection is employed to prevent the Industrial Power Systems inductor current from running away. Hiccup All MPS parts are lead-free, halogen-free, and adhere to the RoHS mode reduces the average current in short- directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS and The Future of Analog IC Technology are circuit condition greatly. Thermal shutdown registered trademarks of Monolithic Power Systems, Inc. provides reliable and fault-tolerant operation. The MP4430 is available in a QFN-16 (3mmx4mm) package. TYPICAL APPLICATION VIN 3.3 to 36V VIN BST EN SYNC VOUT SW MP4430 PHASE GND FREQ FB PG VCC SS BIAS MP4430 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. MP4430 36V, 3.5A, LOW IQ, SYNCHRONOUS, STEP-DOWN CONVERTER ORDERING INFORMATION Part Number* Package Top Marking MP4430GL QFN-16 (3mmx4mm) See Below * For Tape & Reel, add suffix Z (e.g. MP4430GLZ) TOP MARKING MP: MPS prefix Y: Year code W: Week code 4430: 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 2 11 VIN BST SW SW 3 10 4 9 PGND PGND 5 6 7 8 EN SYNC PG BIAS QFN-16 (3mmx4mm) MP4430 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.