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Summary of Contents for Microchip Technology MCP1642B
- Page 1 MCP1642B/D Two-Cell to USB Power Evaluation Board User’s Guide 2014 Microchip Technology Inc. DS50002231A...
- Page 2 WiperLock, Wireless DNA, 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. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries.
- Page 3 Object of Declaration: MCP1642B/D Two-Cell to USB Power Evaluation Board 2014 Microchip Technology Inc. DS50002231A-page 3...
- Page 4 MCP1642B/D Two-Cell to USB Power Evaluation Board User’s Guide NOTES: 2014 Microchip Technology Inc. DS50002231A-page 4...
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Page 5: Table Of Contents
Chapter 1. Product Overview 1.1 Introduction ....................11 1.2 MCP1642B/D Short Overview ..............11 1.3 What is the MCP1642B/D Two-Cells to USB Power Evaluation Board? ..12 1.4 What the MCP1642B/D Two-Cells to USB Power Evaluation Board Contains ..............12 Chapter 2. - Page 6 MCP1642B/D Two-Cell to USB Power Evaluation Board User’s Guide NOTES: 2014 Microchip Technology Inc. DS50002231A-page 6...
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Page 7: Preface
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 MCP1642B/D Two-Cell to USB Power Evaluation Board. Items discussed in this chap- ter include: • Document Layout •... -
Page 8: Conventions Used In This Guide
MCP1642B/D Two-Cell to USB Power 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... -
Page 9: Recommended Reading
Preface RECOMMENDED READING This user’s guide describes how to use MCP1642B/D Two-Cell to USB Power Evaluation Board. Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources. • MCP1642B/D Data Sheet – “1.8A Input Current Switch, 1 MHz Low-Voltage Start-up Synchronous Boost Regulator”... - Page 10 MCP1642B/D Two-Cell to USB Power Evaluation Board User’s Guide NOTES: 2014 Microchip Technology Inc. DS50002231A-page 10...
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Page 11: Chapter 1. Product Overview
Ni-Cd, Ni-MH, one-cell Li-Ion or Li-Polymer batteries. The MCP1642B/D devices operate in Pulse-Width Modulation (PWM), at a fixed 1 MHz switching frequency, featuring Internal Compensation, Overtemperature Protection and Power Good Open-Drain Output. -
Page 12: What Is The Mcp1642B/D Two-Cells To Usb Power Evaluation Board
On the MCP1642B/D Two-Cells to USB Power Evaluation Board, the output voltage has the value of 5.0V (the fixed value MCP1642B/D-50 device is used), resulting in a simple and compact application. The footprints for RT and RB (resistor divider connected to the FB pin) are not populated and will only be used if MCP1642B/D-ADJ, the adjustable option, will be tested. -
Page 13: Chapter 2. Installation And Operation
The device can be disabled using the EN switch. The true disconnect option, MCP1642B/D, removes the normal boost topology path from input to output. - Page 14 Ultimate Lithium batteries are an alternative power solution that provides superior performance high drains and allows designers to utilize the full power range of the MCP1642B/D without sacrificing size or runtime. Energizer Ultimate Lithium batteries utilize a primary cell chemistry that contains higher energy than alkaline batteries, and has much better high-drain performance.
- Page 15 15 k 309 k 1 M 1. The resistor divider is not populated. In case that another output voltage is desired, MCP1642B/D-ADJ should be used. The output voltage can be set according to Equation 2-1. FIGURE 2-3: Two Cells to 5.0V Synchronous Boost MSOP-8 Application.
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Page 16: Getting Started
The MCP1642B/D Two-Cells to USB Power Evaluation Board was designed to be used in the evaluation of the device. The package selected is MSOP-8. - Page 17 The board comes with the fixed output value MCP1642B/D-50 option (V internally set to 5.0V). If a different output voltage is desired, the MCP1642B/D-ADJ adjustable option can be used. In this case, the resistor divider consisting of R and R is used to set the converter output voltage.
- Page 18 MCP1642B/D Two-Cell to USB Power Evaluation Board User’s Guide NOTES: 2014 Microchip Technology Inc. DS50002231A-page 18...
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Page 19: Appendix A. Schematic And Layouts
USB POWER EVALUATION BOARD USER’S GUIDE Appendix A. Schematic and Layouts INTRODUCTION This appendix contains the following schematics and layouts for the MCP1642B/D Two-Cell to USB Power Evaluation Board User’s Guide: • Board – Schematic • Board – Top Silk and Pads •... -
Page 20: Board - Schematic
MCP1642B/D Two-Cell to USB Power Evaluation Board User’s Guide BOARD – SCHEMATIC 2014 Microchip Technology Inc. DS50002231A-page 20... -
Page 21: Board - Top Silk And Pads
Schematic and Layouts BOARD – TOP SILK AND PADS BOARD – TOP COPPER AND SILK 2014 Microchip Technology Inc. DS50002231A-page 21... -
Page 22: Board - Top Copper
MCP1642B/D Two-Cell to USB Power Evaluation Board User’s Guide BOARD – TOP COPPER BOARD – BOTTOM COPPER 2014 Microchip Technology Inc. DS50002231A-page 22... -
Page 23: Appendix B. Bill Of Materials (Bom)
Inductor 4.7 µH 2A 20% SMD XFL4020 Coilcraft XFL4020-472MEB Diode LED red 2V 30 mA SMD 0603 Wurth Elektronik 150060RS75000 Group Printed Circuit Board – MCP1642B/D Microchip Technology 104-00556 Two-Cell to USB Power Inc. Evaluation Board R1,R2 Res. 15k 1% 1/8W SMD 0805... -
Page 24: Worldwide Sales And Service
Tel: 86-29-8833-7252 Tel: 631-435-6000 Fax: 86-29-8833-7256 San Jose, CA China - Xiamen Tel: 408-735-9110 Tel: 86-592-2388138 Canada - Toronto Fax: 86-592-2388130 Tel: 905-673-0699 China - Zhuhai Fax: 905-673-6509 Tel: 86-756-3210040 03/25/14 Fax: 86-756-3210049 2014 Microchip Technology Inc. DS50002231A-page 24... - Page 25 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Microchip ADM00556...
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