MP2131 High Efficiency, 4 A, 5.5 V, 1.2 MHz Synchronous Step-Down Converter The Future of Analog IC Technology DESCRIPTION FEATURES The MP2131 is a monolithic step-down, switch- Wide 2.7 V to 5.5 V Operating Input Range mode converter with built-in internal power Output Voltage as Low as 0.6 V MOSFETs. It achieves a 4 A continuous output 4 A Output Current current from a 2.7 V to 5.5 V input voltage with 35 m and 18 m Internal Power MOSFET excellent load and line regulation. The MP2131 Above 96% Peak Efficiency is ideal for powering portable equipment that Above 80% Light Load Efficiency run from a single cell lithium-ion (Li+) battery. Low IQ: 19 A The output voltage is regulated as low as 0.6 V. 1.2 MHz Frequency The constant-on-time (COT) control scheme 100% Duty Cycle in Dropout provides fast transient response, high light-load 0.5 ms Internal Soft-Start Time efficiency, and eases loop stabilization. EN and Power Good for Power Sequencing Auto Discharge at EN Off Fault condition protection includes Short-Circuit Protection with Hiccup Mode cycle-by-cycle current limit and thermal Available in a QFN-12 (2mm x 2mm) shutdown. Package The MP2131 requires a minimum number of readily available, standard, external APPLICATIONS components and is available in an ultra-small Storage Drives QFN-12 (2mm x 2mm) package. Portable/Handheld Devices The MP2131 is ideal for a wide range of Wireless/Networking Cards applications including portable instruments, Low Voltage I/O System Power small handheld and batterypowered devices, All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For PDAs, and DVD drives. MPS green status, please visit the MPS website under Quality Assurance. MPS and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION MP2131 Rev. 1.1 www.MonolithicPower.com 1 5/8/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved. MP2131 4 A, 5.5 V, 1.2 MHZ SYNCHRONOUS STEP-DOWN CONVERTER ORDERING INFORMATION Part Number* Package Top Marking MP2131GG QFN-12 (2mm x 2mm) See Below * For Tape & Reel, add suffix Z (e.g. MP2131GGZ) TOP MARKING CA: Product code of MP2131GG Y: Year code LLL: Lot number PACKAGE REFERENCE TOP VIEW VIN 10 PVIN 1 9 PG 11 SW SW 2 8 EN 12 PGND PGND 3 7 FB AGND 4 6 OUT 5 NC QFN-12 (2mm x 2mm) MP2131 Rev. 1.1 www.MonolithicPower.com 2 5/8/2021 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2021 MPS. All Rights Reserved.