MP2348 High-Efficiency, 4A, 24V, 650kHz, Synchronous Step-Down Converter in SOT583 Package DESCRIPTION FEATURES The MP2348 is a fully integrated, high- Wide 4.2V-to-24V Operating Input Range frequency, synchronous, rectified, step-down, 75m/40m Low R Internal Power DS(ON) switch-mode converter with internal power MOSFETs MOSFETs. It offers a compact solution to 200A Low I Q achieve 4A of continuous output current across High-Efficiency Synchronous Mode a wide input range, with excellent load and line Operation regulation. The MP2348 has synchronous Selectable Forced PWM, Auto-PFM/PWM mode operation for higher efficiency across the and Ultrasonic Mode output current load range. Fast Load Transient Response 650kHz Switching Frequency Constant-on-time (COT) control provides fast Configurable Soft-Start Time transient response and easy loop design, as well as tight output regulation. Over-Current Protection and Hiccup Mode Pre-Biased Start-Up Full protection features include short-circuit Thermal Shutdown protection (SCP), over-current protection (OCP), Available in an SOT583 (1.6mmx2.1mm) under-voltage protection (UVP), and thermal Package shutdown. The MPL-AL6050 Inductor Series Matches The MP2348 requires a minimal number of Best Performance readily available, standard external components, and is available in a space-saving APPLICATIONS SOT583 (1.6mmx2.1mm) package. Game Consoles Digital Set-Top Boxes Flat-Panel Televisions and Monitors General Purposes All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. MPS, the MPS logo, and Simple, Easy Solutions are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. MP2348 Rev. 1.0 www.MonolithicPower.com 1 3/6/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. MP2348 SYNCHRONOUS STEP-DOWN CONVERTER W/ INTERNAL MOSFETS TYPICAL APPLICATION Efficiency PFM without USM, VOUT = 3.3V, R4 L = 3.3H, DCR = 11.7m 19V 20 100 IN BST C1 95 C3 L1 22F 1F 90 3.3H 3.3V/4A MODE MODE SW 85 C2 R1 80 MP2348 Vin=5V 44F 40.2k 75 Vin=12V EN FB 70 R2 R3 Vin=19V 20k 65 13k Vin=24V GND SS 60 C4 6.8nF 55 50 0 0.5 1 1.5 2 2.5 3 3.5 4 LOAD CURRENT (A) MP2348 Rev. 1.0 www.MonolithicPower.com 2 3/6/2020 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2020 MPS. All Rights Reserved. EFFICIENCY (%)