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Summary of Contents for Microchip Technology MCP1643
- Page 1 MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board User’s Guide 2013 Microchip Technology Inc. DS20005196A...
- Page 2 Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA and Z-Scale are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. GestIC and ULPP are registered trademarks of Microchip Technology Germany II GmbH &...
- Page 3 Object of Declaration: MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board User’s Guide 2013 Microchip Technology Inc. DS20005196A-page 3...
- Page 4 MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board User’s Guide NOTES: 2013 Microchip Technology Inc. DS20005196A-page 4...
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Page 5: Table Of Contents
Chapter 1. Product Overview 1.1 Introduction ....................11 1.2 MCP1643 Short Overview ................11 1.3 What is the MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board? .................. 12 1.4 MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board Kit Contents ................. 12 Chapter 2. - Page 6 MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board User’s Guide NOTES: 2013 Microchip Technology Inc. DS20005196A-page 6...
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Page 7: Preface
• The Microchip Web Site • Customer Support • Document Revision History DOCUMENT LAYOUT This document describes how to use the MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board. The manual layout is as follows: • – Important information about the MCP1643 Chapter 1. -
Page 8: Conventions Used In This Guide
MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board User’s Guide CONVENTIONS USED IN THIS GUIDE This manual uses the following documentation conventions: DOCUMENTATION CONVENTIONS Description Represents Examples Arial font: ® Italic characters Referenced books MPLAB IDE User’s Guide Emphasized text ...is the only compiler... -
Page 9: Recommended Reading
Preface RECOMMENDED READING This user's guide describes how to use MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board. Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources. • MCP1643 Data Sheet - “1 MHz Low Voltage Start-up Synchronous Boost LED Constant Current Regulator”... - Page 10 MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board User’s Guide NOTES: 2013 Microchip Technology Inc. DS20005196A-page 10...
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Page 11: Chapter 1. Product Overview
Alkaline, NiCd or NiMH batteries. The MCP1643 is a PWM-only device that operates at a fixed 1 MHz switching frequency. The device has an operating input voltage range from 0.5V to 5V (with a 0.65V start-up voltage). -
Page 12: What Is The Mcp1643 Synchronous Boost Led Constant Current Regulator Evaluation Board
The MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board is used to evaluate and demonstrate Microchip Technology’s MCP1643 device. This board demonstrates the MCP1643 in a boost converter application supplied by one AA battery, or from an external voltage source, which drives an LED with four selectable currents. -
Page 13: Chapter 2. Installation And Operation
Chapter 2. Installation and Operation INTRODUCTION The MCP1643 has been developed for applications that require driving an LED from a low-voltage source. The Microchip low-voltage technology allows the device to start up from a low 0.65V input voltage without output overshoot. At the same time, the device... -
Page 14: Getting Started
MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board User’s Guide GETTING STARTED The MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board is fully assembled and tested to evaluate and demonstrate the MCP1643 product. This board requires the use of an external power supply or an AA battery. 2.2.1 Power Input and Output Connection 2.2.1.1... - Page 15 ADJUSTABLE LED CURRENT SETTING BY USING THE EN PIN (PWM DIMMING) The MCP1643 allows PWM dimming by turning the LED ON or OFF with a variable duty cycle PWM signal applied to the EN pin. The maximum frequency for dimming is limited by the internal soft-start of 240 µs typical.
- Page 16 MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board User’s Guide NOTES: 2013 Microchip Technology Inc. DS20005196A-page 16...
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Page 17: Appendix A. Schematic And Layouts
EVALUATION BOARD USER’S GUIDE Appendix A. Schematic and Layouts INTRODUCTION This appendix contains the following schematics and layouts for the MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board: • Board – Schematic • Board – Top Silk and Pads •... -
Page 18: Board - Schematic
MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board User’s Guide BOARD – SCHEMATIC 2013 Microchip Technology Inc. DS20005196A-page 18... -
Page 19: Board - Top Silk And Pads
Schematic and Layouts BOARD – TOP SILK AND PADS BOARD – TOP COPPER BOARD – BOTTOM COPPER 2013 Microchip Technology Inc. DS20005196A-page 19... - Page 20 MCP1643 Synchronous Boost LED Constant Current Regulator Evaluation Board User’s Guide NOTES: 2013 Microchip Technology Inc. DS20005196A-page 20...
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Page 21: Appendix B. Bill Of Materials
MCP1643 SYNCHRONOUS BOOST LED CONSTANT CURRENT REGULATOR EVALUATION BOARD USER’S GUIDE Appendix B. Bill of Materials TABLE B-1: BILL OF MATERIALS (BOM) Qty. Reference Description Manufacturer Part Number Holder Battery AA Polar Protection MPD (Memory Protec- BHAA-POL tion Devices)/Keystone ®... -
Page 22: Worldwide Sales And Service
Tel: 66-2-694-1351 China - Xian Tel: 86-29-8833-7252 Fax: 66-2-694-1350 Toronto Fax: 86-29-8833-7256 Mississauga, Ontario, Canada China - Xiamen Tel: 905-673-0699 Tel: 86-592-2388138 Fax: 905-673-6509 Fax: 86-592-2388130 China - Zhuhai Tel: 86-756-3210040 08/20/13 Fax: 86-756-3210049 2013 Microchip Technology Inc. DS20005196A-page 22... - Page 23 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Microchip ADM00435...
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