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DS51812B-page 2

©

 2009 Microchip Technology Inc.

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and may be superseded by updates.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, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE

Microchip disclaims all liability

arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
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hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.

Trademarks

The Microchip name and logo, the Microchip logo, dsPIC, 
K

EE

L

OQ

, K

EE

L

OQ

 logo, MPLAB, PIC, PICmicro, PICSTART, 

rfPIC and UNI/O are registered trademarks of Microchip 
Technology Incorporated in the U.S.A. and other countries.

FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, 
MXDEV, MXLAB, SEEVAL 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, CodeGuard, 
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, 
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial 
Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified 
logo, MPLIB, MPLINK, mTouch, Octopus, Omniscient Code 
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, 
PICtail, PIC

32

 logo, REAL ICE, rfLAB, Select Mode, Total 

Endurance, TSHARC, UniWinDriver, WiperLock 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.

All other trademarks mentioned herein are property of their 
respective companies.

© 2009, Microchip Technology Incorporated, Printed in the 
U.S.A., All Rights Reserved.

 Printed on recycled paper.

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.

Microchip received ISO/TS-16949:2002 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, K

EE

L

OQ

®

 

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.

Содержание MCP73871

Страница 1: ...2009 Microchip Technology Inc DS51812B MCP73871 Demo Board with Voltage Proportional Current Control User s Guide...

Страница 2: ...ochip Technology Incorporated in the U S A All other trademarks mentioned herein are property of their respective companies 2009 Microchip Technology Incorporated Printed in the U S A All Rights Reser...

Страница 3: ...duct Overview 1 1 Introduction 5 1 2 What is the MCP73871 Demo Board with Voltage Proportional Current Control 6 1 3 What the MCP73871 Demo Board with Voltage Proportional Current Control kit Includes...

Страница 4: ...MCP73871 Demo Board with Voltage Proportional Current Control User s Guide DS51812B page 4 2009 Microchip Technology Inc NOTES...

Страница 5: ...user s guide and a description of the user s guide Appendix A Schematic and Layouts Shows the schematic and layout diagrams for the MCP73871 Demo Board with Voltage Proportional Current Control Append...

Страница 6: ...ath File Save Bold characters A dialog button Click OK A tab Click the Power tab N Rnnnn A number in verilog format where N is the total number of digits R is the radix and n is a digit 4 b0010 2 hF1...

Страница 7: ...ts 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 As...

Страница 8: ...Revision B November 2009 Initial Release of this Document Updated Section 2 2 Features with information on the Voltage Proportional Current Control Input Voltage Added footnote to Table 2 1 Updated Se...

Страница 9: ...e MCP73871 Demo Board with Voltage Proportional Current Control feature added is developed to assist engineers in reducing product design cycle and time by utilizing Microchip s favorite stand alone L...

Страница 10: ...ed by the USB specification when selecting USB on S1 switch The maximum fast current when AC is selected on S1 is programmed by the resistor RPROG1 at 1A and the termination current is set at 100 mA b...

Страница 11: ...2 2 FEATURES The MCP73871 Demo Board with Voltage Proportional Current Control has the following features Integrated System Load Sharing Voltage Proportional Current Control VPCC Input voltage 5 5V wi...

Страница 12: ...Li Ion battery charger at 1000 mA fast charge current rate 8 The S1 switch 1 in ON position SEL USB limits the input current to meet USB specifications 9 If switch SEL is in ON position PROG2 the user...

Страница 13: ...urrent IOUT vs Programming Resistor RPROG1 FIGURE 2 2 Simulated Battery Load 1 0 100 200 300 400 500 600 700 800 900 1000 1 3 5 7 9 11 13 15 17 19 Programming Resistor k Charge Current mA 0V 5V Power...

Страница 14: ...in Progress ON OFF ON Charge Complete EOC OFF ON ON Temperature Fault ON ON ON Timer Fault ON ON ON Low Battery Indicator LBO ON OFF OFF No Battery Present OFF OFF ON No Input Power OFF OFF OFF Note L...

Страница 15: ...DC adapter inputs This feature can be disabled by removing resistor R7 and replacing R8 with a zero ohms 0603 resistor The demo board is designed to operate with 5 5V with 0 5V tolerance input voltag...

Страница 16: ...n to factory set thresholds of 1 24V and 0 25V typically Once a voltage outside the thresholds is detected during a charge cycle the MCP73871 device immediately suspends the charge cycle by turning of...

Страница 17: ...echnology Inc DS51812B page 17 Appendix A Schematic and Layouts A 1 INTRODUCTION This appendix contains the following schematics and layouts for the MCP73871 Demo Board with Voltage Proportional Curre...

Страница 18: ...MCP73871 Demo Board with Voltage Proportional Current Control User s Guide DS51812B page 18 2009 Microchip Technology Inc A 2 BOARD SCHEMATIC M...

Страница 19: ...Schematic and Layouts 2009 Microchip Technology Inc DS51812B page 19 A 3 BOARD TOP SILK AND PADS...

Страница 20: ...MCP73871 Demo Board with Voltage Proportional Current Control User s Guide DS51812B page 20 2009 Microchip Technology Inc A 4 BOARD TOP METAL LAYER...

Страница 21: ...Schematic and Layouts 2009 Microchip Technology Inc DS51812B page 21 A 5 BOARD BOTTOM LAYER...

Страница 22: ...MCP73871 Demo Board with Voltage Proportional Current Control User s Guide DS51812B page 22 2009 Microchip Technology Inc NOTES...

Страница 23: ...rol Advanced Circuits 104 00244 4 R1 R3 R4 R5 RES 1K OHM 1 10W 1 0603 SMD Panasonic ECG ERJ 3EKF1001V 2 R2 R6 RES 10K OHM 1 10W 1 0603 SMD Panasonic ECG ERJ 3EKF1002V 5 R7 R9 R10 R11 R12 RES 110K OHM...

Страница 24: ...ng Tel 86 24 2334 2829 Fax 86 24 2334 2393 China Shenzhen Tel 86 755 8203 2660 Fax 86 755 8203 1760 China Wuhan Tel 86 27 5980 5300 Fax 86 27 5980 5118 China Xiamen Tel 86 592 2388138 Fax 86 592 23881...

Страница 25: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Microchip MCP73871DM VPCC...

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