MCP1710
Demo Board
User’s Guide
2012 Microchip Technology Inc.
DS52095A
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and may be superseded by updates.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
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Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
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PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash
and UNI/O are registered trademarks of Microchip Technology
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Analog-for-the-Digital Age, Application Maestro, BodyCom,
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ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
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Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA
and Z-Scale are trademarks of Microchip Technology
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SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
GestIC and ULPP are registered trademarks of Microchip
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All other trademarks mentioned herein are property of their
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© 2012, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-62076-604-0
QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV
== ISO/TS 16949 ==
DS52095A-page 2
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, 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.
2012 Microchip Technology Inc.
Object of Declaration: MCP1710 Demo Board User’s Guide
2012 Microchip Technology Inc.
DS52095A-page 3
MCP1710 Demo Board User’s Guide
NOTES:
DS52095A-page 4
2012 Microchip Technology Inc.
MCP1710 DEMO BOARD
USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 7
Introduction............................................................................................................ 7
Document Layout .................................................................................................. 7
Conventions Used in this Guide ............................................................................ 8
Recommended Reading........................................................................................ 9
The Microchip Web Site ........................................................................................ 9
Customer Support ................................................................................................. 9
Document Revision History ................................................................................... 9
Chapter 1. Product Overview
1.1 Introduction ................................................................................................... 11
1.2 MCP1710 Short Overview ............................................................................ 11
1.3 What Is the MCP1710 Demo Board? ........................................................... 12
1.4 MCP1710 Demo Board Kit Contents ............................................................ 12
Chapter 2. Installation and Operation
2.1 Introduction ................................................................................................... 13
2.2 Getting Started ............................................................................................. 13
Appendix A. Schematic and Layouts
A.1 Introduction .................................................................................................. 15
A.2 Board – Schematic ....................................................................................... 16
A.3 Board – Top Layer ....................................................................................... 17
A.4 Board – Top Copper ................................................................................... 17
A.5 Board – Bottom Copper ............................................................................... 18
Appendix B. Bill of Materials
Worldwide Sales and Service .................................................................................... 20
2012 Microchip Technology Inc.
DS52095A-page 5
MCP1710 Demo Board User’s Guide
NOTES:
DS52095A-page 6
2012 Microchip Technology Inc.
MCP1710 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 online help.
Select the Help menu, and then Topics to open a list of available online help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
MCP1710 Demo Board. Items discussed in this chapter include:
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
Recommended Reading
The Microchip Web Site
Customer Support
Document Revision History
DOCUMENT LAYOUT
This document describes how to use the MCP1710 Demo Board. The manual layout is
as follows:
• Chapter 1. “Product Overview” – Important information about the MCP1710
Demo Board.
• Chapter 2. “Installation and Operation” – Includes instructions on how to get
started with the MCP1710 Demo Board and a description of the user’s guide.
• Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams for the MCP1710 Demo Board.
• Appendix B. “Bill of Materials” – Lists the parts used to build the MCP1710
Demo Board.
2012 Microchip Technology Inc.
DS52095A-page 7
MCP1710 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
N‘Rnnnn
Text in angle brackets < >
Courier New font:
Plain Courier New
Represents
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 number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
A key on the keyboard
Click OK
Click the Power tab
4‘b0010, 2‘hF1
Italic Courier New
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
Constants
A variable argument
Square brackets [ ]
Optional arguments
Curly brackets and pipe
character: { | }
Ellipses...
Choice of mutually exclusive
arguments; an OR selection
Replaces repeated text
Represents code supplied by
user
DS52095A-page 8
Examples
File>Save
Press <Enter>, <F1>
#define START
autoexec.bat
c:\mcc18\h
_asm, _endasm, static
-Opa+, -Opa0, 1
0xFF, ‘A’
file.o, where file can be
any valid filename
mcc18 [options] file
[options]
errorlevel {0|1}
var_name [,
var_name...]
void main (void)
{ ...
}
2012 Microchip Technology Inc.
Preface
RECOMMENDED READING
This user's guide describes how to use the MCP1710 Demo Board. Another useful
document is listed below. The following Microchip document is available and
recommended as a supplemental reference resource:
• MCP1710 Data Sheet – “Ultra-Low Quiescent Current LDO Regulator”
(DS25158)
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 (FAQs), 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
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://www.microchip.com/support.
DOCUMENT REVISION HISTORY
Revision A (October 2012)
• Initial Release of this Document.
2012 Microchip Technology Inc.
DS52095A-page 9
MCP1710 Demo Board User’s Guide
NOTES:
DS52095A-page 10
2012 Microchip Technology Inc.
MCP1710 DEMO BOARD
USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
This chapter provides an overview of the MCP1710 Demo Board and covers the
following topics:
• MCP1710 Short Overview
• What Is the MCP1710 Demo Board?
• MCP1710 Demo Board Kit Contents
1.2
MCP1710 SHORT OVERVIEW
The MCP1710 is a 200 mA for VOUT < 3.5V, 100 mA for VOUT > 3.5V, Low Dropout
(LDO) linear regulator that provides high-current and low-output voltages, while maintaining an ultra-low 20 nA of quiescent current while the device is running. The
MCP1710 also can be shutdown for an even lower 0.1 nA (typical) supply current draw.
The MCP1710 comes in five standard fixed-output voltage versions 1.2V, 1.8V, 2.5V,
3.3V and 4.2V. The 200 mA output current capability, combined with the low output voltage capability, make the MCP1710 a good choice for new ultra-long-life LDO applications that have high-current demands but require ultra-low power consumption while
operating in sleep mode.
The MCP1710 is stable using ceramic output capacitors that inherently provide lower
output noise and reduce the size and cost of the entire regulator solution. Only 1 µF
(2.2 µF recommended) of output capacitance is needed to stabilize the LDO.
The MCP1710's ultra-low quiescent and shutdown current allows it to be paired with
other ultra-low current draw devices like Microchip's XLP nanoWatt technology
devices, for a complete ultra-low power solution.
VIN
MCP1710
CIN
COUT
LOAD
+
-
VOUT
FB
SHDN
GND
FIGURE 1-1:
Typical MCP1710 Application.
2012 Microchip Technology Inc.
DS52095A-page 11
MCP1710 Demo Board User’s Guide
1.3
WHAT IS THE MCP1710 DEMO BOARD?
The MCP1710 Demo Board is designed to operate from a 2.7V to 5.5V input and
regulate the output voltage to a specified fixed value. Test points for input voltage and
output voltage are provided to demonstrate the capability of the demo board over the
entire range. The MCP1710 Demo Board was designed using small surface-mount
components to show application size for an ultra-low power, high-current, voltage
regulator application.
1.4
MCP1710 DEMO BOARD KIT CONTENTS
This MCP1710 Demo Board kit includes the following items:
• MCP1710 Demo Board
• Important Information Sheet
DS52095A-page 12
2012 Microchip Technology Inc.
MCP1710 DEMO BOARD
USER’S GUIDE
Chapter 2. Installation and Operation
2.1
INTRODUCTION
2.1.1
MCP1710 Features
The MCP1710 device has been developed to provide ultra-low power applications with
a precise, regulated rail.
The key features of the MCP1710 include:
•
•
•
•
•
•
•
•
•
•
Ultra-low 20 nA (typical) quiescent current
Ultra-low shutdown supply current: 0.1 nA (typical)
200 mA output current capability for VOUT < 3.5V
100 mA output current capability for VOUT > 3.5V
Input operating voltage range: 2.7V to 5.5V
Standard output voltages:
- 1.2V, 1.8V, 2.5V, 3.3V, 4.2V
Low dropout voltage: 450 mV (maximum) at 200 mA
Stable with 1.0 µF ceramic output capacitor
Over-current protection
Space-saving, 8-lead plastic 2x2 VDFN-8
2.1.1.1
MCP1710 DEMO BOARD FEATURES
The MCP1710 Demo Board is developed to demonstrate how the MCP1710 device
operates over a wide input voltage and load range. Test points are provided for input
and output, allowing the demo board to be connected directly to a system.
A copper via connected to the EN input can be used to turn the MCP1710 on and off.
Turning the device on, (EN > 70% of VIN) will enable the device. When the EN pin is
less than 30% of VIN, the device output is turned off.
2.2
GETTING STARTED
The MCP1710 Demo Board is fully assembled and tested to evaluate and demonstrate
the MCP1710.
2.2.1
Power Input and Output Connection
2.2.1.1
POWERING THE MCP1710 DEMO BOARD
The MCP1710 Demo Board is fully assembled, tested and ready to begin evaluation.
Apply positive input voltage to the VIN terminal and its return to the GND terminal. The
maximum input voltage should not exceed 5.5V. An electronic load or resistive load can
be used for evaluation or the intended system load can be connected. Electronic loads
can attempt to sink current at 0V during startup, therefore a resistive load or constant
resistance is recommended for startup evaluation. Connect the positive voltage
terminal of the load to the VOUT terminal on the demo board, and connect the negative,
or return side of the load, to the GND terminal.
2012 Microchip Technology Inc.
DS52095A-page 13
MCP1710 Demo Board User’s Guide
2.2.1.2
BOARD TESTING
To test the board, follow these steps:
1. Apply input voltage.
2. An internal pull up resistor is connected from VIN to the EN input of the MCP1710.
Once the input voltage is greater than the set output voltage plus VDROPOUT
(DS), and after a 30 ms startup delay, the output voltage will be in regulation.
3. Adjusting the input voltage and load should not cause the output to vary more
than a few mV over the operating range of the converter.
DS52095A-page 14
2012 Microchip Technology Inc.
MCP1710 DEMO BOARD
USER’S GUIDE
Appendix A. Schematic and Layouts
A.1
INTRODUCTION
This appendix contains the following schematics and layouts for the MCP1710 Demo
Board:
•
•
•
•
Board – Schematic
Board – Top Layer
Board – Top Copper
Board – Bottom Copper
2012 Microchip Technology Inc.
DS52095A-page 15
DS52095A-page 16
Inj
GND
1
2
1
2
R1
0
2.2u
C2
GND GND
GND
EN
VIN
MCP1710
GND
9
2 V
OUT
3
NC
FB
4
NC EP NC
1
U1
5
6
7
8
GND
1
2
C1
2.2u
VIN
VCC V
GND GND
IN
R2 1 Meg
2
1
EN
A.2
VOUT
VOUT
MCP1710 Demo Board User’s Guide
BOARD – SCHEMATIC
2012 Microchip Technology Inc.
Schematic and Layouts
A.3
BOARD – TOP LAYER
A.4
BOARD – TOP COPPER
2012 Microchip Technology Inc.
DS52095A-page 17
MCP1710 Demo Board User’s Guide
A.5
BOARD – BOTTOM COPPER
DS52095A-page 18
2012 Microchip Technology Inc.
MCP1710 DEMO BOARD
USER’S GUIDE
Appendix B. Bill of Materials
TABLE B-1:
Qty
BILL OF MATERIALS (BOM)
Reference
Description
Manufacturer
Part Number
2
C1, C2
Cap. 2.2uF 16V ceramic X7R 0805 10%
TDK Corporation
1
PCB
MCP1710 2.7 to 5.5V VIN, 2.5VOUT printed
circuit board
Microchip Technology Inc.
1
R1
Res. 0.0 Ohm 1/10W 0603 SMD
Panasonic® - ECG
ERJ-3GEY0R00V
RMCF0603JT1M00
1
R2
Res. 1M Ohm 1/10W 5% 0603 SMD
Stackpole Electronics, Inc.
1
U1
MCP1710 ultra-low quiescent current LDO
2X2 DFN-8
Microchip Technology Inc.
4
VIN, VOUT, PC test point compact SMT
GND, GND
Note 1:
C2012X7R1C225K
Keystone Electronics Corp. 5016
The components listed in this Bill of Materials are representative of the PCB assembly. The
released BOM used in manufacturing uses all RoHS-compliant components.
2012 Microchip Technology Inc.
DS52095A-page 19
Worldwide Sales and Service
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DS52095A-page 20
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11/29/11
2012 Microchip Technology Inc.