MP1477HGTF-P Monolithic Power Systems

MP1477H 17V, 3A, 1.2MHz, High-Efficiency, Synchronous, Step-Down Converter in a SOT563 Package DESCRIPTION FEATURES The MP1477H is a fully integrated, high- Wide 4.2V to 17V Operating Input Range frequency, synchronous, rectified, step-down, 58m/25m Low R Internal Power DS(ON) switch-mode converter with internal power MOSFETs MOSFETs. The MP1477H offers a very 200A Low I Q compact solution that achieves 3A of High-Efficiency Synchronous Mode continuous output current with excellent load Operation and line regulation over a wide input range. The Forced PWM Mode Operation MP1477H uses synchronous-mode operation Fast Load Transient Response for higher efficiency over the output current-load 1.2MHz Switching Frequency range. Internal Soft Start (SS) Constant-on-time (COT) control operation Over-Current Protection (OCP) and Hiccup provides very fast transient response, easy loop Thermal Shutdown design, and very tight output regulation. Output Adjustable from 0.8V Available in a SOT563 (1.6mm1.6mm) Full protection features include short-circuit Package protection (SCP), over-current protection (OCP), under-voltage protection (UVP), and thermal APPLICATIONS shutdown. Security Camera The MP1477H requires a minimal number of Digital Set-Top Boxes readily available, standard, external Flat-Panel Television and Monitors components and is available in a space-saving General Purposes SOT563 (1.6mm1.6mm) package. 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 and The Future of Analog IC Technology are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency R4 V = 3.3V, L = 1.5H, DCR = 4.3m OUT 10 100 C3 1 F 90 12V L1 80 3.3V/3A 1.5 H VIN VOUT 70 BST VIN SW 60 R1 C1 50 C2 22 F 40.2k 40 22 F x 2 30 FB Vin=5V MP1477H R2 20 R3 Vin=12V 13k 75k 10 Vin=16V EN 0 EN GND 0.01 0.1 1 10 LOAD CURRENT(A) MP1477H Rev. 1.0 www.MonolithicPower.com 1 11/10/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2017 MPS. All Rights Reserved. EFFICIENCY(%)MP1477H SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS ORDERING INFORMATION Part Number* Package Top Marking MP1477HGTF SOT563(1.6mm1.6mm) See Below * For Tape & Reel, add suffix Z (e.g. MP1477HGTFZ). TOP MARKING BEC: Product code of MP1477HGTF Y: Year code LLL: Lot number PACKAGE REFERENCE SOT563( 1.6mm1. 6mm) MP1477H Rev. 1.0 www.MonolithicPower.com 2 11/10/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2017 MPS. All Rights Reserved.