データシート目次24V Input, 1A/2A Output, High Efficiency Synchronous Buck Regulator with Power Good Indication11.0 Electrical Characteristics3TABLE 1-1: Temperature Characteristics52.0 Typical Performance Curves7FIGURE 2-1: 5V VOUT Efficiency vs. IOUT.7FIGURE 2-2: 3.3V VOUT Efficiency vs. IOUT.7FIGURE 2-3: 2.5V VOUT Efficiency vs. IOUT.7FIGURE 2-4: 1.8V VOUT Efficiency vs. IOUT.7FIGURE 2-5: 1.5V VOUT Efficiency vs. IOUT.7FIGURE 2-6: 0.9V VOUT Efficiency vs. IOUT.7FIGURE 2-7: 5V VOUT vs. IOUT.8FIGURE 2-8: 3.3V VOUT vs. IOUT.8FIGURE 2-9: 2.5V VOUT vs. IOUT.8FIGURE 2-10: 1.8V VOUT vs. IOUT.8FIGURE 2-11: 1.5V VOUT vs. IOUT.8FIGURE 2-12: 0.9V VOUT vs. IOUT.8FIGURE 2-13: 5V VOUT vs VIN.9FIGURE 2-14: 3.3V VOUT vs VIN.9FIGURE 2-15: 2.5V VOUT vs VIN.9FIGURE 2-16: 1.8V VOUT vs VIN.9FIGURE 2-17: 1.5V VOUT vs VIN.9FIGURE 2-18: 0.9V VOUT vs VIN.9FIGURE 2-19: Shutdown Current vs. Input Voltage.10FIGURE 2-20: Shutdown Current vs. Temperature.10FIGURE 2-21: Output Voltage vs. Temperature.10FIGURE 2-22: Oscillator Frequency vs. Temperature (IOUT = 300 mA).10FIGURE 2-23: Input Quiescent Current vs. Temperature (No Load, Switching).10FIGURE 2-24: Input Current vs. Temperature (No Load, No Switching).10FIGURE 2-25: Maximum VIN to VOUT Ratio for Continuous Switching.11FIGURE 2-26: Light Load Switching Waveforms.11FIGURE 2-27: Heavy Load Switching Waveforms.11FIGURE 2-28: Startup From Enable.11FIGURE 2-29: Startup From VIN.11FIGURE 2-30: Load Transient Response.11FIGURE 2-31: Line Transient Response.123.0 Pin Descriptions13TABLE 3-1: Pin Function Table133.1 Switch Pin (SW)133.2 Power Supply Input Voltage Pin (VIN)133.3 Signal Ground Pin (SGND)133.4 Feedback Voltage Pin (VFB)133.5 Power Good Pin (PG)133.6 Enable Pin (EN)143.7 BOOST Pin (BOOST)143.8 Power Ground Pin (PGND)143.9 Exposed Thermal Pad (EP)144.0 Detailed Description154.1 Device Overview15FIGURE 4-1: MCP16321/2 Block Diagram.164.2 Functional Description17FIGURE 4-2: Synchronous Step-Down Converter.175.0 Application Information19TABLE 5-1: Capacitor Value Range19TABLE 5-2: MCP16321 RECOMMENDED INDUCTORS20TABLE 5-3: MCP16322 RECOMMENDED INDUCTORS20FIGURE 5-1: Recommended Layout.22FIGURE 5-2: Recommended Layout – Schematic.23TABLE 5-4: Recommended Layout Components236.0 Packaging Information256.1 Package Marking Information25Appendix A: Revision History29Revision A (December 2011)29Product Identification System31Trademarks33Worldwide Sales and Service34サイズ： 1.02MBページ数： 34Language: Englishマニュアルを開く
ユーザーズマニュアル目次Preface5Introduction5Document Layout5Conventions Used in this Guide6Recommended Reading7The Microchip Web Site7Customer Support7Document Revision History7Chapter 1. Product Overview91.1 Introduction91.2 MCP16321 Short Overview91.3 What is the MCP16321 Evaluation Board?101.4 MCP16321 Evaluation Board Kit Contents10Chapter 2. Installation and Operation112.1 Introduction112.2 Getting Started12Appendix A. Schematic and Layouts13A.1 Introduction13A.2 Board – Schematic14A.3 Board – Top Layer15A.4 Board – Top Copper15A.5 Board – Bottom Copper16Appendix B. Bill of Materials17Corporate Office18Atlanta18Boston18Chicago18Cleveland18Fax: 216-447-064318Dallas18Detroit18Indianapolis18Toronto18Fax: 852-2401-343118Australia - Sydney18China - Beijing18China - Shanghai18India - Bangalore18Korea - Daegu18Korea - Seoul18Singapore18Taiwan - Taipei18Fax: 43-7242-2244-39318Denmark - Copenhagen18France - Paris18Germany - Munich18Italy - Milan18Spain - Madrid18UK - Wokingham18Worldwide Sales and Service18サイズ： 213KBページ数： 18Language: Englishマニュアルを開く
