MP3428 17A, 600kHz, 20V Wide Input Range, Synchronous Boost Converter in a small 3x4mm QFN Package MPS CONFIDENTIAL AND PROPRIETARY INFORMATION INTERNAL USE ONLY DESCRIPTION FEATURES The MP3428 is a 600kHz fixed-frequency, high- 3V-to-20V Wide Input Range efficiency, wide input range, current-mode Integrated 10m Low-Side Power FET boost converter with optional internal or SDR Driver for Synchronous Solution external current-sensing configuration for high- >17A Switch-Current Limit integration and high-power applications. With a Up to 97.5% Efficiency current limit above 17A, the MP3428 supports a Optional Internal/External Current- wide range of applications including POS, Sensing Configuration Thunderbolt, Bluetooth Audio, Power Banks, External Soft-Start and Compensation for and Fuel Cells. The MP3428 features a 10m, Higher Flexibility 24V power switch and a synchronous gate Programmable UVLO and Hysteresis driver for high efficiency. An external < 1A Shutdown Current compensation pin gives the user flexibility in Thermal Shutdown at 150 setting loop dynamics and obtaining optimal Available in a 3x4mm QFN-22 Package transient performance at all conditions. APPLICATIONS The MP3428 includes under-voltage lockout (UVLO), switching-current limiting and thermal Thunderbolt Interface shutdown (TSD) to prevent damage in the Notebooks and Tablets event of an output overload. Bluetooth Audio Power Banks The MP3428 is available in a low-profile 22-pin 3mmx4mm QFN package. Fuel Cells POS Systems All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION L1 2.2uH Q1 V IN R4 VOUT=12V/2.1A 4m C6 0.1F SW BST SDR SENSE IN OUT C2 R1 22 F x 3 EN OFF ON 300k MP3428 VDD FB C1 R2 22 F x 2 SS 34k C3 COMP MODE 2.2 F C5 C4 PGND AGND 6.8nF R3 33nF 9.1k MP3428 Rev. 1.0 www.MonolithicPower.com 1 10/10/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved. MP3428 17A, 600KHZ, 20V WIDE INPUT RANGE ,SYNCHRONOUS BOOST CONVERTER IN ASMALL 3X4MM QFN PACKAGE ORDERING INFORMATION Part Number* Package Top Marking MP3428GL QFN-22 (3mm4mm) See Below * For Tape & Reel, add suffix Z (e.g. MP3428GLZ) TOP MARKING MP: MPS prefix: Y: year code W: week code: 3428: first four digits of the part number LLL: lot number PACKAGE REFERENCE TOP VIEW SW SW PGND PGND 20 19 18 17 16 AGND BST 1 15 SS SDR 2 OUT 3 14 FB SW PGND 21 22 13 COMP EN 4 12 VDD MODE 5 11 IN SENSE 6 7 8 9 10 SW SW PGND PGND MP3428 Rev. 1.0 www.MonolithicPower.com 2 10/10/2019 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2019 MPS. All Rights Reserved.