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Summary of Contents for Microchip Technology MIC4802
- Page 1 MIC4802 Evaluation Board User’s Guide 2018 Microchip Technology Inc. DS-50002780A...
- Page 2 ® DSCs, K ® code hopping Germany II GmbH & Co. KG, a subsidiary of Microchip Technology devices, Serial EEPROMs, microperipherals, nonvolatile memory and Inc., in other countries. analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified.
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Page 3: Table Of Contents
1.2.1 MIC4802 Key Features ................9 1.2.2 MIC4802 Device Overview ................9 1.3 MIC4802 Evaluation Board Description ............10 1.4 MIC4802 Evaluation Board Kit Contents ............10 Chapter 2. Installation and Operation 2.1 Introduction ....................11 2.2 Evaluation Board Description ............... 12 2.2.1 Current Set Resistor (R4) ................ - Page 4 2018 Microchip Technology Inc. DS-50002780A-page 4...
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Page 5: Preface
• Customer Support • Document Revision History DOCUMENT LAYOUT This document describes how to use the MIC4802 Evaluation Board as a development tool. The manual layout is as follows: • – Important information about the MIC4802 Chapter 1. “Product Overview”... -
Page 6: Conventions Used In This Guide
MIC4802 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... Initial caps... -
Page 7: Recommended Reading
Preface RECOMMENDED READING This user’s guide describes how to use the MIC4802 Evaluation Board. Other useful documents are listed below. The following Microchip document is available and recommended as a supplemental reference resource: • MIC4802 Data Sheet – “High Efficiency 800mA Single Channel Linear WLED Driver with Ultra Fast PWM™... - Page 8 MIC4802 Evaluation Board User’s Guide NOTES: 2018 Microchip Technology Inc. DS-50002780A-page 8...
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Page 9: Chapter 1. Product Overview
1.2.2 MIC4802 Device Overview The MIC4802 is a high efficiency White LED (WLED) linear driver designed to drive a single LED up to 800 mA. The MIC4802 provides the highest possible efficiency, as this architecture has no switching losses present in traditional charge pumps or inductive boost circuits. -
Page 10: Mic4802 Evaluation Board Description
MIC4802 EVALUATION BOARD DESCRIPTION The board is populated with the MIC4802YME device and uses a high power white LED as a load. The MIC4802 Evaluation Board has been developed to evaluate a typical application, where V is between 3.0V to 5.5V and current trough LED is fixed to 600 mA. -
Page 11: Chapter 2. Installation And Operation
USER’S GUIDE Chapter 2. Installation and Operation INTRODUCTION MIC4802 is a high efficiency linear White LED driver designed to drive a single LED up to 800 mA. MIC4802 is a constant current driver designed to drive high power LEDs in various lighting applications. -
Page 12: Evaluation Board Description
PWM signal, as shown in the following scope shots. Pulling the EN low for more than 40 ms puts the MIC4802 into a low IQ sleep mode. The EN pin cannot be left floating because a floating enable pin may cause an indeterminate state on the outputs. - Page 13 D1 - 2V/div, 20 MHz BW - 500 mA/div, 20 MHz BW Time = 5 ms/div FIGURE 2-3: MIC4802 at 50% Duty Cycle. = 5V EN - 5V/div, 20 MHz BW D1 - 2V/div, 20 MHz BW - 500mA/div, 20 MHz BW...
- Page 14 MIC4802 Evaluation Board User’s Guide = 5V EN - 5V/div, 20 MHz BW D1 - 2V/div, 20 MHz BW - 500mA/div, 20 MHz BW Time = 5 ms/div FIGURE 2-5: MIC4802 at 1% Duty Cycle. = 5V EN - 5V/div, 20 MHz BW...
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Page 15: D1 - Led Cathode (J6)
GND copper plane using a via under the device. As the MIC4802 has an exposed pad, the copper plane will help conduct the heat away from the device and improve thermal performance. Moreover, doing this will also help shield the device and improve output ripple performance. - Page 16 MIC4802 Evaluation Board User’s Guide NOTES: 2018 Microchip Technology Inc. DS-50002780A-page 16...
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Page 17: Appendix A. Schematic And Layouts
MIC4802 EVALUATION BOARD USER’S GUIDE Appendix A. Schematic and Layouts INTRODUCTION This appendix contains the following schematics and layouts for the MIC4802 Evaluation Board: • Board – Schematic • Board – Top Silk Layer • Board – Top Copper and Silk Layer •... -
Page 18: Board - Schematic
BOARD – SCHEMATIC VBAT VBAT 2.2uF 0805 0603 LED1 WHITE MIC4802 2.2uF 100k RSET RSET 0603 0603 0805 RSET 6.19k 0603... -
Page 19: Board - Top Silk Layer
Schematic and Layouts BOARD – TOP SILK LAYER 2018 Microchip Technology Inc. DS-50002780A-page 19... -
Page 20: Board - Top Copper And Silk Layer
MIC4802 Evaluation Board User’s Guide BOARD – TOP COPPER AND SILK LAYER 2018 Microchip Technology Inc. DS-50002780A-page 20... -
Page 21: Board - Top Copper Layer
Schematic and Layouts BOARD – TOP COPPER LAYER 2018 Microchip Technology Inc. DS-50002780A-page 21... -
Page 22: Board - Bottom Copper Layer
MIC4802 Evaluation Board User’s Guide BOARD – BOTTOM COPPER LAYER 2018 Microchip Technology Inc. DS-50002780A-page 22... -
Page 23: Board - Bottom Copper And Silk Layer
Schematic and Layouts BOARD – BOTTOM COPPER AND SILK LAYER 2018 Microchip Technology Inc. DS-50002780A-page 23... -
Page 24: Board - Bottom Silk Layer
MIC4802 Evaluation Board User’s Guide BOARD – BOTTOM SILK LAYER 2018 Microchip Technology Inc. DS-50002780A-page 24... -
Page 25: Appendix B. Bill Of Materials (Bom)
0022284020 TH VERT LED1 DIO LED WHITE 3V 350 mA 7000K Seoul SZ5-M2-W0-00-W3W5-B4C-G SMD L3.5W3.5H2.15 Semiconductor Co., Ltd. MIC4802 Evaluation Board – Printed Microchip 04-10835-R2 Circuit Board Technology Inc. ® RES TKF 0R 1/10W SMD 0603 Panasonic – ECG ERJ-3GSY0R00V RES TKF 100k 1% 1/10W SMD 0603 Panasonic –... - Page 26 MIC4802 Evaluation Board User’s Guide NOTES: 2018 Microchip Technology Inc. DS-50002780A-page 26...
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Page 27: Worldwide Sales And Service
New York, NY Tel: 46-31-704-60-40 Tel: 631-435-6000 Sweden - Stockholm San Jose, CA Tel: 46-8-5090-4654 Tel: 408-735-9110 UK - Wokingham Tel: 408-436-4270 Tel: 44-118-921-5800 Canada - Toronto Fax: 44-118-921-5820 Tel: 905-695-1980 Fax: 905-695-2078 2018 Microchip Technology Inc. DS-50002780A-page 27 10/25/17...
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