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Summary of Contents for Microchip Technology MCP1643
- Page 1 MCP1643 RGB LED Driver Demonstration Board User’s Guide 2016 Microchip Technology Inc. DS50002437A...
- Page 2 WiperLock, Wireless DNA, and ZENA 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. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries.
- Page 3 Object of Declaration: MCP1643 RGB LED Driver Demonstration Board 2016 Microchip Technology Inc. DS50002437A-page 3...
- Page 4 MCP1643 RGB LED Driver Demonstration Board User’s Guide NOTES: 2016 Microchip Technology Inc. DS50002437A-page 4...
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Page 5: Table Of Contents
1.4 MCP1643 RGB LED Driver Demonstration Board Overview ....... 12 1.5 MCP1643 RGB LED Driver Demonstration Board Features ......13 1.6 What the MCP1643 RGB LED Driver Demonstration Board Kit Includes ..13 Chapter 2. Installation and Operation 2.1 Introduction ....................15 2.2 Getting Started ..................... - Page 6 MCP1643 RGB LED Driver Demonstration Board User’s Guide NOTES: 2016 Microchip Technology Inc. DS50002437A-page 6...
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Page 7: Preface
• Development Systems Customer Change Notification Service • Customer Support • Revision History DOCUMENT LAYOUT This document describes how to use the MCP1643 RGB LED Driver Demonstration Board. The document is organized as follows: • – Important information about the MCP1643 Chapter 1. -
Page 8: Conventions Used In This Guide
Curly brackets and pipe Choice of mutually exclusive errorlevel {0|1} character: { | } arguments; an OR selection Ellipses... Replaces repeated text var_name [, var_name...] Represents code supplied by void main (void) user { ... 2016 Microchip Technology Inc. DS50002437A-page 8... -
Page 9: Warranty Registration
Preface RECOMMENDED READING This user's guide describes how to use the MCP1643 RGB LED Driver Demonstration 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 Start-up Voltage Synchronous Boost LED Constant Current Regulator”... -
Page 10: Customer Support
Technical support is available through the web site at: http://www.microchip.com/support. REVISION HISTORY Revision A (January 2016) • Original release of this document. 2016 Microchip Technology Inc. DS50002437A-page 10... -
Page 11: Chapter 1. Product Overview
• What the MCP1643 RGB LED Driver Demonstration Board Kit Includes MCP1643 DEVICE OVERVIEW 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 <... -
Page 12: Mcp1643 Rgb Led Driver Demonstration Board Overview
LED separately at a constant current of 350 mA. A PIC microcontroller drives each color of the RGB LED at a frequency of 70 Hz. The MCP1643 RGB LED Driver Demonstration Board was developed to help engineers reduce product design cycle time. -
Page 13: Mcp1643 Rgb Led Driver Demonstration Board Features
• Demonstration program WHAT THE MCP1643 RGB LED DRIVER DEMONSTRATION BOARD KIT INCLUDES The MCP1643 RGB LED Driver Demonstration Board Kit includes the following items: • MCP1643 RGB LED Driver Demonstration Board (ADM00612) • Important Information Sheet 2016 Microchip Technology Inc. - Page 14 MCP1643 RGB LED Driver Demonstration Board User’s Guide NOTES: 2016 Microchip Technology Inc. DS50002437A-page 14...
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Page 15: Chapter 2. Installation And Operation
The MCP1643 RGB LED Driver Demonstration Board has been developed for applications that require driving an LED from a low-voltage source. The low-voltage technology developed by Microchip Technology allows the device to start up from a low 0.65V input voltage without output overshoot. Also, the device is capable of achieving high efficiency by integrating the low resistance N-Channel boost switch and the synchronous P-Channel switch, and by using a low-voltage reference of 0.120V. -
Page 16: Getting Started
MCP1643 RGB LED Driver Demonstration Board User’s Guide GETTING STARTED The MCP1643 RGB LED Driver Demonstration Board is fully assembled and tested to evaluate and demonstrate the MCP1643 product operating with an external PWM signal. This board requires the use of an external power supply or a AA battery. - Page 17 An idle time is necessary between each color to ensure that the output voltage of the MCP1643 is below the LED voltage, otherwise the LED can be damaged by a current spike caused by the output capacitor discharge. The idle time can be optimized for different LED voltage differences to increase performance.
- Page 18 4V. This voltage is stored (through a diode) in a capacitor in order to power the control system while the MCP1643 is driving the LEDs. The diode is necessary because the energy stored in the capacitors would otherwise uncontrollably discharge into the LED.
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Page 19: Chapter 3. Flow Charts
MCP1643 RGB LED DRIVER DEMONSTRATION BOARD USER’S GUIDE Chapter 3. Flow Charts This chapter shows the flow charts for the MCP1643 RGB LED Driver Demonstration Board. Figure 3-1 depicts the Main routine flow chart. START Initialize: -ADC -interrupts -Timer 0... - Page 20 MCP1643 RGB LED Driver Demonstration Board User’s Guide Figure 3-2 depicts the Interrupt routine flow chart. Timer 0 Interrupt triggered STOP flag not set STOP MCP1643 Enable increment counter counter >1, Enable Green LED* counter = Disable Blue LED Green...
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Page 21: Appendix A. Schematics And Layouts
DEMONSTRATION BOARD USER’S GUIDE Appendix A. Schematics and Layouts INTRODUCTION This appendix contains the following schematics and layouts for the MCP1643 RGB LED Driver Demonstration Board: • Board – Schematic • Board – Top Silk • Board – Top Silk and Copper •... -
Page 22: Board - Schematic
BOARD – SCHEMATIC... -
Page 23: Board - Top Silk
Schematics and Layouts BOARD – TOP SILK BOARD – TOP SILK AND COPPER BOARD – TOP COPPER BOARD – BOTTOM COPPER BOARD – BOTTOM SILK AND COPPER 2016 Microchip Technology Inc. DS50002437A-page 23... -
Page 24: Board - Bottom Silk
MCP1643 RGB LED Driver Demonstration Board User’s Guide BOARD – BOTTOM SILK 2016 Microchip Technology Inc. DS50002437A-page 24... -
Page 25: Appendix B. Bill Of Materials (Bom)
® Diode LED tri. red, green, blue 2.1V, 3.5V, 3.5V Lumex Inc. SML-LX1610RGBW/A 300 mA, 350 mA, 350 mA SMD TO-252-3 PCB1 MCP1643 - Printed Circuit Board — 04-10346-1 Q1, Q2, Q3, Transistor FET N-Channel IRLML2402 20V 1.2A Infineon IRLML2402TRPBF... -
Page 26: Worldwide Sales And Service
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