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DS51812B-page 24

2009 Microchip Technology Inc.

AMERICAS

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ORLDWIDE

ALES

AND

ERVICE

03/26/09

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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