MCP165X 3W White LED
Demo Board (Rev. 1)
User’s Guide
2004 Microchip Technology Inc.
DS51513A
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED,
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Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, microID, MPLAB, PIC, PICmicro,
PICSTART, PRO MATE, PowerSmart, rfPIC, and
SmartShunt are registered trademarks of Microchip
Technology Incorporated in the U.S.A. and other countries.
AmpLab, FilterLab, MXDEV, MXLAB, PICMASTER, SEEVAL,
SmartSensor and The Embedded Control Solutions Company
are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, dsPICDEM,
dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR,
FanSense, FlexROM, fuzzyLAB, In-Circuit Serial
Programming, ICSP, ICEPIC, Migratable Memory, MPASM,
MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net,
PICLAB, PICtail, PowerCal, PowerInfo, PowerMate,
PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial,
SmartTel and Total Endurance 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.
All other trademarks mentioned herein are property of their
respective companies.
© 2004, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 quality system certification for
its worldwide headquarters, design and wafer fabrication facilities in
Chandler and Tempe, Arizona and Mountain View, California in
October 2003. The Company’s quality system processes and
procedures are for its PICmicro® 8-bit MCUs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS51513A-page ii
2004 Microchip Technology Inc.
MCP165X 3W WHITE LED
DEMO BOARD USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 1
Chapter 1. Product Overview ........................................................................................ 5
1.1
1.2
1.3
1.4
Introduction ............................................................................................... 5
Evaluation Board Description ................................................................... 5
How it is used ........................................................................................... 7
How it works ............................................................................................. 8
Appendix A. Schematic and Board Layouts ............................................................... 9
A.1
A.2
A.3
A.4
A.5
A.6
Introduction ............................................................................................... 9
Board Schematic .................................................................................. 10
Top Silk-Screen .................................................................................... 11
Top Metal Layer .................................................................................... 12
Bottom Silk-Screen Layer (Top View) ................................................... 13
Bottom Metal Layer ............................................................................... 14
Appendix B. Bill-of-Materials (BOM) ......................................................................... 15
Worldwide Sales and Service .................................................................................... 16
2004 Microchip Technology Inc.
DS51513A-page iii
MCP165X 3W White LED Demo Board User’s Guide
NOTES:
DS51513A-page iv
2004 Microchip Technology Inc.
MCP165X 3W WHITE LED
DEMO BOARD USER’S GUIDE
Preface
NOTICE TO CUSTOMERS
All documentation becomes dated, and this manual is no exception. Microchip tools
and documentation are constantly evolving to meet customer needs, so some actual
dialogs and/or tool descriptions may differ from those in this document. Please refer
to our web site (www.microchip.com) to obtain the latest documentation available.
Documents are identified with a “DS” number. This number is located on the bottom
of each page, in front of the page number. The numbering convention for the DS
number is “DSXXXXXA”, where “XXXXX” is the document number and “A” is the
revision level of the document.
For the most up-to-date information on development tools, see the MPLAB® IDE
on-line help. Select the Help menu, and then Topics to open a list of available on-line
help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
MCP165X 3W White LED Demo Board (Rev. 1). Items discussed in this chapter
include:
•
•
•
•
About This Guide
Recommended Reading
The Microchip Web Site
Customer Support
ABOUT THIS GUIDE
Document Layout
This document describes how to use MCP165X 3W White LED Demo Board (Rev. 1)
as a development tool to emulate and debug firmware on a target board. The manual
layout is as follows:
• Chapter 1: MCP165X 3W White LED Demo Board (Rev. 1) - Describes how to
use the various features of the MCP165X 3W White LED Demo Board (Rev. 1).
• Appendix A: Schematic and Board Layouts – Shows the schematic and
Printed Circuit Board (PCB) layout diagrams for the MCP165X 3W White LED
Demo Board (Rev. 1).
• Appendix B: Bill-of-Materials (BOM) – Shows the parts used to build the
MCP165X 3W White LED Demo Board (Rev. 1).
2004 Microchip Technology Inc.
DS51513A-page 1
MCP165X 3W White LED Demo Board User’s Guide
Conventions Used in this Guide
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
Initial caps
Quotes
Underlined, italic text with
right angle bracket
Bold characters
‘bnnnn
Text in angle brackets < >
Courier font:
Plain Courier
Italic Courier
0xnnnn
Square brackets [ ]
Curly brackets and pipe
character: { | }
Ellipses...
Represents
Examples
Referenced books
Emphasized text
A window
A dialog
A menu selection
A field name in a window or
dialog
A menu path
MPLAB® IDE User’s Guide
...is the only compiler...
the Output window
the Settings dialog
select Enable Programmer
“Save project before build”
A dialog button
A tab
A binary number where n is a
digit
A key on the keyboard
Click OK
Click the Power tab
‘b00100, ‘b10
File>Save
Press <Enter>, <F1>
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
A variable argument
#define START
autoexec.bat
c:\mcc18\h
_asm, _endasm, static
-Opa+, -Opa0, 1
file.o, where file can be
any valid filename
A hexadecimal number where 0xFFFF, 0x007A
n is a hexadecimal digit
Optional arguments
mcc18 [options] file
[options]
Choice of mutually exclusive errorlevel {0|1}
arguments; an OR selection
Replaces repeated text
var_name [,
var_name...]
Represents code supplied by void main (void)
user
{ ...
}
RECOMMENDED READING
This user's guide describes how to use MCP165X 3W White LED Demo Board (Rev.
1). Other useful documents are listed below. The following Microchip documents are
available and recommended as supplemental reference resources.
MCP1650 750 kHz Boost Controller Data Sheet (DS21876)
The data sheet provides detailed information regarding the MCP1650/51/52/53 family
of boost controllers.
DS51513A-page 2
2004 Microchip Technology Inc.
Preface
THE MICROCHIP WEB SITE
Microchip provides online support via our web site at www.microchip.com. This web
site is used as a means to make files and information easily available to customers.
Accessible by using your favorite Internet browser, the web site contains the following
information:
• Product Support – Data sheets and errata, application notes and sample
programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software
• General Technical Support – Frequently Asked Questions (FAQ), technical
support requests, online discussion groups, Microchip consultant program
member listing
• Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
•
•
•
•
•
Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Technical Support
Development Systems Information Line
Customers should contact their distributor, representative or field application engineer
(FAE) for support. Local sales offices are also available to help customers. A listing of
sales offices and locations is included in the back of this document.
Technical support is available through the web site at: http://support.microchip.com
In addition, there is a Development Systems Information Line which lists the latest
versions of Microchip's development systems software products. This line also
provides information on how customers can receive currently available upgrade kits.
The Development Systems Information Line numbers are:
1-800-755-2345 – United States and most of Canada
1-480-792-7302 – Other International Locations
2004 Microchip Technology Inc.
DS51513A-page 3
MCP165X 3W White LED Demo Board User’s Guide
NOTES:
DS51513A-page 4
2004 Microchip Technology Inc.
MCP165X 3W WHITE LED
DEMO BOARD USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
The MCP1650/1/2/3 Boost Controller family is a 750 kHz gated oscillator controller in
an 8 or 10-pin MSOP package. The family includes peak current limit, adjustable output
voltage/current, low battery detection and power good indication.
This board uses Microchip Technology’s MCP1650/1/2/3 boost controller as a
constant-current source to drive a 3W white LED. The application features the
MCP1651R-option (8-pin MSOP) with the low-battery detect feature. The input voltage
for the MCP165X 3W White LED Demo Board is 2.0V to 4.5V and the output current is
set at 700 mA.
1.2
EVALUATION BOARD DESCRIPTION
The MCP165X 3W White LED Demo Board is fully assembled, tested and ready for
evaluation and demonstration. This board is capable of functioning without any extra
lab supplies or loads. A three-socket AA battery holder is attached to the board. However, there are terminals provided to allow the use of an external voltage supply. The
input is fused for overcurrent protection.
If an external voltage supply is used, the MCP165X 3W White LED Demo Board
requires 2.0V to 4.5V for proper operation. Connect the positive terminal of the external
supply to TP1 and the ground terminal of the external supply to TP2. Care must be
taken so that the input voltage does not exceed the maximum voltage rating of 6.0V
that is specified in the MCP1650/1/2/3 data sheet (DS21876). The MCP1651R is the
specific device used on the board.
There are two switches on the board. Switch S1 is an on/off switch used to disconnect
the input voltage. Switch S2 is a momentary switch that triggers the PIC10F206
microcontroller to activate the Demonstration mode or the Flashing mode.
Section 1.3 “How it is used” describes how to put the MCP165X 3W White LED
Demo Board in the different modes of operation. The flowchart in Figure 1-1 shows the
sequence of events triggered by pressing the momentary switch.
The Flashing mode consists of three different operating states for the LED. The brightness of the LED is approximately 50% dimmed in the first state. This is accomplished
by applying a 50% square wave to the shutdown pin of the MCP1651R. The second
and third states of operation consist of flashing the LED at two different rates. The
second state is a fast flash rate, while the third state is a slow flash rate. These rates
of flash are predetermined and are accomplished by toggling the shutdown pin with a
square wave.
The Demonstration mode automatically cycles through the three flashing modes.
2004 Microchip Technology Inc.
DS51513A-page 5
MCP165X 3W White LED Demo Board User’s Guide
The MCP1651R has a low input voltage status indicator that will provide visual
indication (via a red LED) when the input voltage is approaching 2.8V.
LED @ Full Power
Constantly On
Power-Up
Switch
Pressed
for 2 sec?
Yes
No
LED Dimmed by ~50%
by Toggling SHDN
Yes
Automatically
Run Through
Demo
Switch
Pressed
for 2 sec?
No
LED Flashing @
Fast Rate
Yes
Switch
Pressed
for 2 sec?
Yes
No
No
FIGURE 1-1:
DS51513A-page 6
Switch
Pressed
for 2 sec?
LED Flashing @
Slow Rate
MCP165X 3W White LED Demo Board Flow Chart
2004 Microchip Technology Inc.
Product Overview
1.3
HOW IT IS USED
1.3.1
Standard Operation
1. Verify that the on/off switch S1 is in the off position.
2. Insert three fully-charged batteries into the battery holder. The combined voltage
of the three batteries can not exceed 6.0V. The recommended range of the input
voltage is 2.0V to 4.5V.
3. Move the S1 switch to the on position. The 3W white LED should now be
powered.
Note 1:
2:
1.3.2
Alternately, the input voltage can be provided by a lab power supply.
Apply a 2.0V to 4.5V supply voltage to the VIN (TP1) pin and the GND
(TP2) pin.
Before connecting a lab power supply, remove any batteries from the
battery holder located on the bottom of the board.
Demonstration Mode Operation
As described in Section 1.2 “Evaluation Board Description”, the MCP165X 3W
White LED Demo Board can be set into a demonstration mode of operation. The
following procedure describes how to initiate the demonstration mode.
1. Refer to Section 1.3.1 “Standard Operation” to verify the proper connection of
the input voltage supply.
2. Move the S1 switch to the ON position. The LED should be powered.
3. Press and hold the momentary switch S2. Release the switch after a minimum of
two seconds. The MCP165X 3W White LED Demo Board will enter the
Demonstration mode. Once the Demonstration mode is complete, the LED will
be powered at full brightness.
Note:
1.3.3
See Section 1.2 “Evaluation Board Description” for a description of the
brightness and flashing sequences preprogrammed into the on-board
PIC10F206.
Flashing Mode Operation
1. Refer to Section 1.3.1 “Standard Operation” to verify the proper connection of
the input voltage supply.
2. Move the S1 switch to the on position. The LED should be powered.
3. Press and release the momentary switch S2. The 3W LED will now be in a
dimmed state and stay in this state until the momentary switch is pressed again.
4. Press and release the momentary switch S2 again. The 3W LED will now begin
to flash at a predetermined rate.
5. Press and release the momentary switch S2 again. The 3W LED will now begin
to flash slower predetermined rate.
6. Press and release the momentary switch S2 again. The 3W LED will return to full
brightness.
Note:
2004 Microchip Technology Inc.
Anytime the momentary switch S2 is pressed for more than two seconds,
the MCP165X 3W White LED Demo Board will enter the Demonstration
mode of operation.
DS51513A-page 7
MCP165X 3W White LED Demo Board User’s Guide
1.4
HOW IT WORKS
1.4.1
MCP1650/1/2/3 Functions
The MCP1650/1/2/3 product family consists of four high-frequency, boost converter
devices having different combinations of features. All devices in the family feature
750 kHz high-frequency, low quiescent current, shutdown compatibility and the MSOP
package. The MCP1650 is the base device in an 8-pin MSOP package. The MCP1651
includes all of the features of the MCP1650, with the addition of a low-battery detect
and a low-battery output indicator. The MCP1652 includes all of the features of the
MCP1650, with the addition of a power good indicator. The MCP1653 has all the
features of the MCP1650/1/2 and is offered in a 10-pin MSOP package.
1.4.2
Power Topology and Output Regulation
The topology used to convert the wide ranging input voltage into a regulated output
voltage is the SEPIC topology. This topology allows the input voltage to be stepped-up
or stepped-down and provides protection if the switching FET fails.
The output current is regulated by using a sense resistor to change the white LED
current into a voltage. This voltage is then fed into the voltage reference pin on the
MCP1651R. Please refer to the MCP1650/1/2/3 data sheet (DS21876) for more
information regarding output regulation.
DS51513A-page 8
2004 Microchip Technology Inc.
MCP165X 3W WHITE LED
DEMO BOARD USER’S GUIDE
Appendix A. Schematic and Board Layouts
A.1
INTRODUCTION
This appendix contains the schematic and printed circuit board (PCB) layout diagrams
for the MCP165X 3W White LED Evaluation Board (Rev. 1).
The MCP165X 3W White LED Evaluation Board (Rev. 1) is constructed using a
two-layer printed circuit board. The top and bottom layers are for components and
traces.
Diagrams included in this appendix:
•
•
•
•
•
Board Schematic
Top Silk-screen Layer
Top Metal Layer
Bottom Silk-screen Layer
Bottom Metal Layer
2004 Microchip Technology Inc.
DS51513A-page 9
MCP165X 3W White LED Demo Board User’s Guide
BOARD SCHEMATIC
2
A.2
1
3
DS51513A-page 10
2004 Microchip Technology Inc.
Schematic and Board Layouts
A.3
TOP SILK-SCREEN
2004 Microchip Technology Inc.
DS51513A-page 11
MCP165X 3W White LED Demo Board User’s Guide
A.4
TOP METAL LAYER
DS51513A-page 12
2004 Microchip Technology Inc.
Schematic and Board Layouts
A.5
BOTTOM SILK-SCREEN LAYER (TOP VIEW)
2004 Microchip Technology Inc.
DS51513A-page 13
MCP165X 3W White LED Demo Board User’s Guide
A.6
BOTTOM METAL LAYER
DS51513A-page 14
2004 Microchip Technology Inc.
MCP165X 3W WHITE LED
DEMO BOARD USER’S GUIDE
Appendix B. Bill-of-Materials (BOM)
TABLE B-1:
Qty
BILL-OF-MATERIALS (BOM)
Reference
Description
Manufacturer
Part Number
Electronics®
1
Battery Holder
3 AA holder
Keystone
1
S1
ON/OFF Switch
E-Switch Inc.
1
S2
Momentary Switch
E-Switch Inc.
TL3301NF260QG
1
F1
Polyswitch Reset Fuse
Raychem® Corp.
MINISMDC200-2
5
TP1, TP2, TP3, TP4,
TP5
SMT Test Point
Keystone Electronics
5016
1
C1
Capacitor, 10 µF, 1210
Kemet®
C1210C106K8PACTU
2464
EG1903
1
C2
Capacitor, 1.0 µF, 0603
Panasonic®
1
C3
Capacitor, 0.82 µF, 0805
Panasonic - ECG
1
C4
Capacitor, 47 µF, 1210
muRata®
GJ232CF50J476ZD01K
1
C5
Capacitor, 4.7 µF, 0603
Panasonic - ECG
ECJ-1VB0J475M
1
R1
Resistor, 100Ω, 0603
Panasonic - ECG
ERJ-3EKF1000V
1
R2
Resistor, 2.49 kΩ, 0603
Panasonic - ECG
ERJ-3EKF2491V
- ECG
ECJ-1VB1C105K
ECJ-2YB1A824K
1
R3
Resistor, 750Ω, 0603
Panasonic - ECG
ERJ-3EKF7500V
1
R4
Resistor, 0.27Ω, 1206
Panasonic - ECG
ERJ-8RQFR27V
1
R5
Resistor, 0.10Ω, 0603
Panasonic - ECG
ERJ-3RSJR10V
2
R6, R9
Resistor, 47.5 kΩ, 0603
Panasonic - ECG
ERJ-3EKF4752V
1
R7
Resistor, 0Ω, 0603
Panasonic - ECG
ERJ-3GEY0R00V
1
R8
Resistor, 562Ω, 0603
Panasonic - ECG
ERJ-3EKF5620V
2
R10, R12
Resistor, 100 kΩ, 0603
Panasonic - ECG
ERJ-3EKF1003V
1
R11
Resistor, 82.5 kΩ, 0603
Panasonic - ECG
ERJ-3EKF8252V
®
1
D1
Schottky Diode
ON Semiconductor
MBRA130LT3
1
D2
Schottky Diode
Panasonic - ECG
MBRA130LT3
1
D3
Luxeon III LED
Lumileds®
LXHL-LW3C
®
1
D4
Red LED, 0805
Lumex
Opto/Components Inc.
SML-LX0805SIC-TR
2
L1, L2
3.3 µH Inductor
Coilcraft®
DO3316P-332
N Channel MOSFET
Fairchild®
FDN337N
1
Q1
Semiconductor
1
U2
PIC10F206 6-pin SOT-23
Microchip
Technology Inc.
PIC10F206
1
U3
MCP1651 8-pin MSOP
Microchip
Technology Inc.
MCP1651R
1
J1
CONN HEADER VERT
5POS .100 TIN
AMP
640454-5
1
HS1
Heatsink
International Electronic BDN09-3CB/A01
Research Corp.
2004 Microchip Technology Inc.
DS51513A-page 15
WORLDWIDE SALES AND SERVICE
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
2355 West Chandler Blvd.
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Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http:\\support.microchip.com
Web Address:
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Tel: 61-2-9868-6733
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Fax: 886-2-2508-0102
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Fax: 86-532-502-7205
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Fax: 650-961-0286
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Canada
Tel: 905-673-0699
Fax: 905-673-6509
09/27/04
DS51513A-page 16
2004 Microchip Technology Inc.