Part Number: MP1582
Function: 2A, 28V, 1.5MHz, Step-Down Converter
Package: SOIC 8 Pin Type
Manufacturer: MPS ( Monolithic Power Systems )
The MP1582 is a high frequency step-down switching regulator with integrated internal high-side, high voltage power MOSFET. It provides 2A output with current mode control for fast loop response and easy compensation. The wide 4.5V to 28V input range accommodates a variety of step-down applications, including those in automotive systems. A 100µA operational quiescent current allows use in battery-powered applications. High power conversion efficiency over a wide load range is achieved by scaling down the switching frequency at light load condition to reduce the switching and gate driving losses.
The frequency foldback prevents inductor current runaway during startup and thermal shutdown provides reliable, fault tolerant operation. The MP1582 is available in thermally enhanced SOIC8 package. TYPICAL APPLICATION VIN VIN BST SW VOUT 3.3V EFFICIENCY (%) M P S 7 2 EN 6 C 8 O C4 100nF N F ID • • • Applications Game Machines Automotive Systems Industrial Power Systems Distributed Power Systems Printer Systems Battery Powered Systems E Wide 4.5V to 28V Operating Input Range Programmable Switching Frequency up to 1.5MHz High-Efficiency Pulse Skipping Mode for Light Loads Ceramic Capacitor Stable Internal Soft-Start Precision Current Limit without a Current Sensing Resistor Up to 95% Efficiency Available in SOIC8 with Exposed Pad Packages N T IA L “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. 1 EN MP1582 FB FREQ GND 5 COMP D MP1582 Rev. 1.0 4/17/2009 O N 3 4 T O D1 C3 220pF C6 NS D IS T 100 90 80 70 60 50 40 30 20 10 R U B I T E Efficiency Curve (fSW=500kHz) VIN=12V VIN=24V 0 0.01 0.1 1 10 OUTPUT CURRENT (A) www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. 1 MP1582 – 2A, 28V, 1.5MHz STEP-DOWN CONVERTER MPS CONFIDENTIAL AND PROPRIETARY INFORMATION – SUPA USE ONLY ORDERING INFORMATION Part Number- MP1582EN Package SOIC8E Top Marking MP1582EN –20°C to +85°C For Tape & Reel, add suffix –Z (eg. MP1582EN–Z); For RoHS compliant packaging, add suffix –LF (eg. MP1582EN–LF–Z) PACKAGE REFERENCE TOP VIEW SW EN COMP FB 1 2 3 4 ABSOLUTE MAXIMUM RATINGS (1) Supply Voltage (VIN) ..–0.3V to 30V Switch Voltage (VSW) –0.3V to VIN + 0.3V BST to SW .–0.3V to +5V All Other Pins –0.3V to +5V Continuous Power Dissipation (TA = +25°C)(2) . 2.5W Junction Temperature .150°C Lead Temperature [ ]