Microchip Technology MCP73830L User guide

MCP73830L 2x2 TDFN

Li-Ion Battery Charger

Evaluation Board

User’s Guide

© 2011 Microchip Technology Inc. DS51992A

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code hopping

DS51992A-page 2 © 2011 Microchip Technology Inc.

MCP73830L 2X2 TDFN LI-ION BATTERY

CHARGER EVALUATION BOARD

USER’S GUIDE

Table of Contents

Preface ...........................................................................................................................5

Introduction............................................................................................................ 5

Document Layout .................................................................................................. 5

Conventions Used in this Guide............................................................................ 6

Recommended Reading........................................................................................ 7

The Microchip Web Site........................................................................................ 7

Customer Support.................. ..................................................................... ..........7

Document Revision History................................................................................... 7

Chapter 1. Product Overview

1.1 Introduction .....................................................................................................9

1.2 What is the MCP73830L 2x2 TDFN Li-Ion Battery Charger

Evaluation Bo a rd ? ..... ......................................................................................... 10

1.3 What the MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board

Kit Includes ......................................................................................................... 10

Chapter 1. Installation and Operation

1.1 Introduction ...................................................................................................11

1.2 Features .......... ............... .............................................................................. 11

1.3 Getting Sta rted .... .. ................ ....................................................................... 1 2

Appendix A. Schematic and Layouts

A.1 Introduction ..................................................................................................13

A.2 Board – Schematic ... .................................................................... ................ 14

A.3 Board – Top Lay er ....................................................................................... 15

A.4 Board – Top Copper ...................................................................................15

A.5 Board – Bottom Copper ...............................................................................16

Appendix B. Bill of Materials

Worldwide Sales and Service ....................................................................................18

© 2011 Microchip Technology Inc. DS51992A-page 3

MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board User’s Guide

DS51992A-page 4 © 2011 Microchip Technology Inc.

MCP73830L 2X2 TDFN LI-ION BA TTERY

CHARGER EVALUATION 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 p age 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
Select the Help menu, and then Topics to open a list of available on line help files.

®

IDE on-line help.

INTRODUCTION

This chapter contains general information that will be useful to know before using the
MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation 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 MCP73830L 2x2 TDFN Li-Ion Battery
Charger Evaluation Board. The manual layout is as follows:

• Chapter 1. “Product Overview” – Important information about the MCP73830L
2x2 TDFN Li-Ion Battery Charger Evaluation Board.

• Chapter 1. “Installation and Operation” – Includes instructions on how to get
started with MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board and
a description of the user’s guide.

• Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams for the MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board.

• Appendix B. “Bill of Materials” – Lists the parts used to build the MCP73830L
2x2 TDFN Li-Ion Battery Charger Evaluation Board.

© 2011 Microchip Technology Inc. DS51992A-page 5

MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board User’s Guide

CONVENTIONS USED IN THIS GUIDE

This manual uses the following docum entat io n conven tion s:

DOCUMENTATION CONVENTIONS

Description Represents Examples

Arial font:

Italic chara c ters Referenced books MPLAB

Emphasized text ...is the only compiler...

Initial caps A window the Output window

A dialog the Settings dialog
A menu selection select Enable Programmer

Quotes A field name in a window or

dialog

Underlined, italic text with
right angle bracket

Bold characters A dialog button Click OK

N‘Rnnnn A number in verilog format,

Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>

Courier New font:

Plain Courier New Sample source code #define START

Italic Courier New A variable argument file.o, where file can be

Square brackets [ ] Optional arguments mcc18 [options] file

Curly brackets and pipe
character: { | }

Ellipses... Replaces r epeated text var_name [,

A menu path File>Save

A tab Click the Power tab

where N is the tota l number of
digits, R is th e radi x and n is a
digit.

Filenames autoexec.bat
File paths c:\mcc18\h
Keywords _asm, _endasm, static
Command-line options -Opa+, -Opa-
Bit values 0, 1
Constants 0xFF, ‘A’

Choice of mut ually exclus ive
arguments; an OR selection

Represents code supplied by
user

®

IDE User’s Guide

“Save project before build”

4‘b0010, 2‘hF1

any valid filename

[options]
errorlevel {0|1}

var_name...]
void main (void)

{ ...
}

DS51992A-page 6 © 2011 Microchip Technology Inc.

RECOMMENDED READING

This user's guide describes how to use MCP73830L 2x2 TDFN Li-Ion Battery Charger
Evaluation Board. Other useful documents are listed below. The following Microchip
documents are available and recommended as supplemental reference resources.

• MCP73830L Data Sheet - “Single-Cell Li-Ion/Li-Polymer Battery Charge
Management Controllers in 2x2 TDFN” (DS25049)

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 even ts, listings of Microchip sales offices,
distributors and factory representatives

Preface

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://support.microchip.com.

DOCUMENT REVISION HISTORY

Revision A (August 2011)

• Initial Release of this Document.

© 2011 Microchip Technology Inc. DS51992 A-page 7

MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board User’s Guide

NOTES:

DS51992A-page 8 © 2011 Microchip Technology Inc.

Chapter 1. Product Overview

1.1 INTRODUCTION

The MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board demonstrates the
features and abilities of Microchip’s MCP73830L Single-Chip Linear Li-Ion Battery
Charger. The MCP73830L is a stand-alone, highly integrated linear battery charge
management controller that employs a constant current / constant voltage (CCCV)
charge algorithm with selectable preconditioning and charge termination. The charge
algorithm is provided for Li-Ion / Li-Polymer battery packs to achieve optimal capacity
in the shortest charging time possible.

The MCP73830L uses an external resistor (R
current up to a maximum of 200 mA.

This chapter covers the following topics:

• “What is the MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board?”

• “What the MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board Kit
Includes.”

MCP73830L 2X2 TDFN LI-ION BA TTERY

CHARGER EVALUATION BOARD

USER’S GUIDE

) to set the magnitude of the charge

PROG

GND PROG

1

STAT EN

2

VBAT VIN

Single Cell

Li-Ion Battery

3

GND

7

FIGURE 1-1: MCP73830L Typical Application Circuit.

6

5

4

1F1F

© 2011 Microchip Technology Inc. DS51992A-page 9

MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board User’s Guide

1.2 WHAT IS THE MCP73830L 2X2 TDFN LI-ION BATTERY CHARGER EVALUATION BOARD?

The MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board demonstrates the
use of Single-Chip Linear Li-Ion Battery Charger with programmable charge current.

The MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board is set up to
evaluate single-cell Li-Ion battery charge management. This board utilizes Microchip's
MCP73830L that effectively charges Li-Ion batteries with high-accuracy, preset-voltage
regulation. The MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board
comes with a pre-installed 2 mm x 2 mm TDFN-6 MCP73830L. This circuit is ready to
charge Li-Ion batteries at a maximum charge current rate up to 200 mA.

A built-in LED is used to display the charge status (STAT).
The MCP73830L has an internal safety timer and will terminate the charge cycle when

the timer has expired.
The MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board is designed to

observe the performance and features on the circuits via multiple test points. Users can
also discover the compact size of the layout in addition to the device itself. The circuit
can also be implemented into suitable applications without additional work.

1.3 WHAT THE MCP73830L 2X2 TDFN LI-ION BATTERY CHARGER EVALUATION BOARD KIT INCLUDES

This MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board kit includes:

• MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board, 102-00313-R1

• Important Information Sheet

DS51992A-page 10 © 2011 Microchip Technology Inc.

Chapter 1. Installation and Operation

1.1 INTRODUCTION

The MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board demonstrates
Microchip's stand-alone Linear Li-Ion Battery Charger in a simple and compact design.

The MCP73830L requires only a minimum number of components to implement a
complete battery charge management circuit.

The MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board comes with a
6-pin TDFN MCP73830L pre-installed.

Typical applications for MCP73830L are MP3 players, USB-powered systems,
handheld medical instruments, Bluetooth headsets and portable devices.

1.2 FEATURES

The MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board has the following
features:

• 2x2 TDFN-6 Package Size

• Programmable charge current between 20 mA to 200 mA

• A status LED to indicate charge status

• EN pin to enable/disable charger

• A preset internal safety timer

• Built-in Under Voltage Current Limit Control

MCP73830L 2X2 TDFN LI-ION BA TTERY

CHARGER EVALUATION BOARD

USER’S GUIDE

© 2011 Microchip Technology Inc. DS51992A-page 11

MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board User’s Guide

1.3 GETTING STARTED

The MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board is fully assembled
and tested for charging a single-cell Li-Ion or Li-Polymer battery with an input supply of

3.75V to 6V.

1.3.1 Power Input and Output Connection

1.3.1.1 POWERING THE MCP73830L 2X2 TDFN LI-ION BATTERY CHARGER
EVALUATION BOAR D

1. Connect the positive battery terminal to V

GND.

2. Connect the DC power supply Negative terminal to GND.

3. Connect the 5V DC power supply Positive terminal to V

4. It should initiate the battery charging cycle when the power source is present.

Note: The battery voltage needs to be below 4.05V (typical) in order to initiate a

new charging cycle.

5. Charging current should be able to read off the multi-meter that is in series with

battery.

Note: The battery can be replaced with test circuit or electronic load that can sync

current with the DC power supply.

6. Pulling EN pin high disables charging activities.

7. Fast Charge Current can be programmed with various resistors that are based

on Figure 1-1.

and negative battery terminal to

BAT

.

IN

200

180

160

140

120

100

80

60

ChargeCurrent(mA)

40

20

0

13579111315

ProgrammingResistor(k)

FIGURE 1-1: Resistor vs. Charge Current.

DS51992A-page 12 © 2011 Microchip Technology Inc.

Appendix A. Schematic and Layouts

A.1 INTRODUCTION

This appendix contains the following schematics and layouts for the MCP73830L 2x2
TDFN Li-Ion Battery Charger Eval uati on Boa rd :

• Board – Schematic

• Board – Top Layer

• Board – Top Copper Layer

• Board – Bottom Copper Layer

MCP73830L 2X2 TDFN LI-ION BATTERY

CHARGER EVALUATION BOARD

USER’S GUIDE

© 2011 Microchip Technology Inc. DS51992A-page 13

MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board User’s Guide

A.2 BOARD – SCHEMATIC

DS51992A-page 14 © 2011 Microchip Technology Inc.

A.3 BOARD – TOP LAYER

Schematic and Layouts

A.4 BOARD – TOP COPPER

© 2011 Microchip Technology Inc. DS51992A-page 15

MCP73830L 2x2 TDFN Li-Ion Battery Charger Evaluation Board User’s Guide

A.5 BOARD – BOTTOM COPPER

DS51992A-page 16 © 2011 Microchip Technology Inc.

MCP73830L 2X2 TDFN LI-ION BATTERY

CHARGER EVALUATION BOARD

USER’S GUIDE

Appendix B. Bill of Mater ials

TABLE B-1: BILL OF MATERIALS (BOM)

Qty Reference Description Manufacturer Part Number

1 – Printed circuit board Microchip Technology Inc. 102-00313
2 C1,C2 CAP CER 1.0uF 10V 10% X5R 0805 Panasonic
1 D1 LED ALINGAP RED CLEAR 0805 SMD Panasonic - ECG 598-8110-107F
1 R1 RES 510 OHM 1/8W 1% 0805 SMD Panasonic - ECG ERJ-6ENF5100V
1 R2 RES 2.00K OHM 1/8W 1% 0805 SMD Panasonic - ECG ERJ-6ENF2001V
1 U1 Single-Chip Linear Li-Ion Battery Charger Microchip Technology Inc. MCP73830L

Note 1: 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.

®

- ECG GRM219R61A105KC01D

© 2011 Microchip Technology Inc. DS51992A-page 17

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