Microchip Technology MCP1256 Charge Pump Evaluation Board, MCP1257 Charge Pump Evaluation Board, MCP1258 Charge Pump Evaluation Board, MCP1259 Charge Pump Evaluation Board User guide

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MCP1256/7/8/9

Charge Pump Evaluation Board

User’s Guide

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MCP1256/7/8/9 CHARGE PUMP

EVALUATION BOARD USER’S GUIDE

Table of Contents

Preface ........................................................................................................................... 1

Chapter 1. Product Overview ....................................................................................... 5

1.1 Introduction ..................................................................................................... 5

1.2 What is the MCP1256/7/8/9 Charge Pump Evaluation Board? ...................... 6

1.3 What the MCP1256/7/8/9 Charge Pump Evaluation Board Includes ............. 6

Chapter 2. Installation and Operation ......................................................................... 7

2.1 Introduction ..................................................................................................... 7

2.2 Features ......................................................................................................... 7

2.3 Getting Started ............................................................................................... 8

Appendix A. Schematic and Layouts ........................................................................ 11

A.1 Introduction .................................................................................................. 11

A.2 Board Schematic ...................................................................................... 12

A.3 Board - Assembly Drawing ....................................................................... 13

A.4 Board - Top Overlay ................................................................................. 14

A.5 Board - Top Layer .................................................................................... 15

A.6 Board - Bottom Layer ............................................................................... 16

Appendix B. Bill Of Materials (BOM) ......................................................................... 17

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

MCP1256/7/8/9 Charge Pump Evaluation Board User’s Guide

NOTES:

MCP1256/7/8/9 CHARGE PUMP

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 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 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 MCP1256/7/8/9 Charge Pump 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 MCP1256/7/8/9 Charge Pump Evaluation Board. The manual layout is as follows:

• Chapter 1. “Product Overview” – Important information about the

MCP1256/7/8/9 Charge Pump Evaluation Board.

• Chapter 2. “Installation and Operation” – Includes instructions on how to get

started and a description of the MCP1256/7/8/9 Charge Pump Evaluation Board.

• Appendix A. “Schematic and Layouts” – Shows the schematic and board lay-

out diagram for the MCP1256/7/8/9 Charge Pump Evaluation Board.

• Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the

MCP1256/7/8/9 Charge Pump Evaluation Board.

MCP1256/7/8/9 Charge Pump 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

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 repeated text var_name [,

A menu path File>Save

A tab Click the Power tab

where N is the total number of digits, R is the radix 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 mutually exclusive arguments; an OR selection

Represents code supplied by user

“Save project before build”

4‘b0010, 2‘hF1

any valid filename

[options] errorlevel {0|1}

var_name...] void main (void)

{ ... }

IDE User’s Guide

Chapter 1. Product Overview

1.1 INTRODUCTION

The MCP1256/7/8/9 Charge Pump Evaluation Board is used to evaluate Microchip’s MCP1256/7/8/9 Regulated 3.3V, Low-Ripple Charge Pumps with low-operating current SLEEP mode or BYPASS mode.

This chapter covers the following topics:

• What is the MCP1256/7/8/9 Charge Pump Evaluation Board?

• What the MCP1256/7/8/9 Charge Pump Evaluation Board Includes

MCP1256/7/8/9 CHARGE PUMP

EVALUATION BOARD USER’S GUIDE

INPUT

1.6V to 3.6V

INPUT

1.6V to 3.6V

10 μF

ON / OFF

MCP1256

OUT

C2+

C2-

OUT

LBO

C2+

C2-

SHDN

C1+

C1-

SLEEP

SHDN

C1+

C1-

1 μF

Typical Application with Power-Good Indication

1 μF

PGOOD

GND

MCP1259

1 μF

OUTPUT

3.3V

OUT

10 μF

Power-Good Indication

OUTPUT

3.3V

OUT

10 μF

Low-Battery Indication

BYPASS

ON / OFF

Typical Application with Low-Battery Indication

GND

FIGURE 1-1: Typical MCP1256/7/8/9 Applications.

MCP1256/7/8/9 Charge Pump Evaluation Board User’s Guide

1.2 WHAT IS THE MCP1256/7/8/9 CHARGE PUMP EVALUATION BOARD?

The MCP1256/7/8/9 Charge Pump Evaluation Board is an evaluation and demonstration

tool for Microchip Technology’s MCP1256/7/8/9 Regulated 3.3V, Low-Ripple Charge Pumps with low-operating current SLEEP mode or BYPASS mode. The design provides for dynamic versatility.

The MCP1256/7/8/9 Charge Pump Evaluation Board is setup to evaluate simple, stand-alone, DC-to-DC conversion.

of the MCP1256/7/8/9 device family.

demonstrating the SLEEP mode feature along with a power good indication. The other evaluation circuit utilizes the MCP1259, demonstrating the unique BYPASS mode feature, along with a low battery indication.

When connected, the MCP1256/7/8/9 devices can be evaluated in a variety of applications.

1.3 WHAT THE MCP1256/7/8/9 CHARGE PUMP EVALUATION BOARD

INCLUDES

This MCP1256/7/8/9 Charge Pump Evaluation Board includes:

• MCP1256/7/8/9 Charge Pump Evaluation Board, 102-00099

• MCP1256/7/8/9 Charge Pump Evaluation Board User’s Guide, DS51603

• MCP1256/7/8/9 Data Sheet, “Regulated 3.3V, Low-Ripple Charge Pump with Low-Operating Current SLEEP Mode or BYPASS Mode”, DS21989

Two evaluation circuits are provided, demonstrating the versatility

One evaluation circuit utilizes the MCP1256,

Chapter 2. Installation and Operation

2.1 INTRODUCTION

The MCP1256/7/8/9 Charge Pump Evaluation Board demonstrates Microchip’s MCP1256/7/8/9 devices. The MCP1256/7/8/9 devices are positive regulated charge pumps that accept an input voltage from +1.8V to +3.6V and convert it to a regulated

3.3V output voltage. The MCP1256/7/8/9 provide a low-cost, compact and simple solution for step-up DC/DC conversions, primarily in battery applications that do not want to use switching regulator solutions because of EMI noise and inductor size.

The MCP1256/7/8/9 are designed to offer the highest possible efficiency under common operating conditions, i.e. V fixed switching frequency, 650 kHz (typically), allows for easy external filtering.

The MCP1256/7 provide a unique SLEEP mode feature. SLEEP mode reduces the current drawn from the input supply while maintaining a regulated bias on external peripherals. SLEEP mode can substantially increase battery run-time in portable applications.

The MCP1258/9 provide a unique BYPASS mode feature. BYPASS virtually eliminates the current drawn from the input supply by the device, while maintaining an unregulated bias on external peripherals. BYPASS connects the input supply voltage to the output. All remaining functions of the device are shutdown. BYPASS mode can substantially increase battery run-time in portable applications.

The devices supply up to 100 mA of output current for input voltages, V or equal to 2.2V.

MCP1256/7/8/9 CHARGE PUMP

EVALUATION BOARD USER’S GUIDE

= 2.4V or 2.8V, V

OUT

= 3.3V, I

= 100 mA. A

OUT

, greater than

2.2 FEATURES

The MCP1256/7/8/9 Charge Pump Evaluation Board is used to evaluate various device options. Two evaluation circuits are provided as a guide to external component selection and board layout. Emphasis has been placed on cost, board area, thermal management and performance. One evaluation circuit utilizes the MCP1256, demonstrating the SLEEP mode feature along with a power good indication. The other evaluation circuit utilizes the MCP1259 demonstrating the unique BYPASS mode feature along with a low-battery indication.

The MCP1256/7/8/9 Charge Pump Evaluation Board has the following features:

• Evaluation of the MCP1256 in a 10-pin MSOP package

• Evaluation of the MCP1259 in a 10-pin MSOP package

• Simple, stand-alone operation

• Powered from external bench supply or compatible battery input

• Surface-mount design

• Fully assembled and tested

MCP1256/7/8/9 Charge Pump Evaluation Board User’s Guide

TP 9 TP 10

TP 5

TP 2 TP 3

C7 C8

TP 12

TP 14

C3 C4

TP 7

TP 8

TP 4

TP 1

TP 11

TP 13

TP 6

2.3 GETTING STARTED

The MCP1256/7/8/9 Evaluation Board is fully assembled and tested for generating a regulated 3.3V output voltage from a 1.8V to 3.6V input at load currents up to 100 mA.

The board requires the use of an external input voltage source and external load.

2.3.1 Power Input and Output Connections

2.3.1.1 POWERING THE MCP1256/7/8/9 EVALUATION BOARD

1. Apply the input voltage source to the appropriate circuit for evaluation. The input

voltage source should be limited to the 0V to +3.6V range. For normal operation, the input voltage should be between +1.8V and +3.6V. The input voltage must not exceed an absolute maximum of +3.8V.

2. Connect the positive side of the input source (+) to V

evaluated. Connect the negative or return side of the input source (-) to GND of the circuit being evaluated. Refer to Figure 2-1.

of the circuit being

Output Load

Input Power Supply

1.8V to 3.6V

Input Power Supply

1.8V to 3.6V

FIGURE 2-1: Setup Configuration Diagram.

2.3.1.2 APPLYING THE LOAD TO THE MCP1256/7/8/9 EVALUATION BOARD

1. To apply a load to a MCP1256/7/8/9 Evaluation Board, the positive side of the

load (+) should be connected to V

2. The negative or return side of the load (-) should be connected to GND of the

circuit being evaluated. Care should be taken when using electronic loads or ground referenced loads.

of the circuit being evaluated.

OUT

Installation and Operation

2.3.2 Shutdown Mode (SHDN)

Driving SHDN low puts the MCP1256/7/8/9 in a low-power Shutdown mode. This disables the charge-pump switches, oscillator and control logic, reducing the quiescent current to 0.1 μA (typical). The PGOOD output and LBO during shutdown.

2.3.3 SLEEP Mode (SLEEP)

The MCP1256/7 provide a unique SLEEP mode feature. SLEEP mode reduces the current drawn from the input supply, while maintaining a regulated bias on external peripherals. SLEEP mode can substantially increase battery run-time in portable applications.

The regulation control is hysteretic, otherwise referred to as a bang-bang control. The output is regulated around a fixed reference with some hysteresis. As a result, some amount of peak-to-peak ripple will be observed at the output independent of load current. The frequency of the output ripple, however, will be influenced heavily by the load current and output capacitance.

2.3.4 BYPASS Mode (BYPASS)

are in a high impedance state

2.3.5 Device Support Options

The MCP1256/7/8/9 Charge Pump Evaluation Board supports the entire MCP1256/7/8/9 family. The MCP1256/7/8/9 Charge Pump Evaluation Board is provided with two evaluation circuits utilizing the MCP1256 and MCP1259. Alternate devices can be substituted in order to evaluate the different MCP1256/7/8/9 family options.

MCP1256/7/8/9 Charge Pump Evaluation Board User’s Guide

NOTES:

Appendix A. Schematic and Layouts

A.1 INTRODUCTION

This appendix contains the following schematic and layouts for the MCP1256/7/8/9 Charge Pump Evaluation Board.

Diagrams included in this appendix:

• Board Schematic

• Board - Assembly Drawing

• Board - Top Overlay

• Board - Top Layer

• Board - Bottom Layer

MCP1256/7/8/9 CHARGE PUMP

EVALUATION BOARD USER’S GUIDE

MCP1256/7/8/9 Charge Pump Evaluation Board User’s Guide

A.2 BOARD SCHEMATIC

A.3 BOARD - ASSEMBLY DRAWING

TP9 TP10

TP5

TP2 TP3

C7 C8

TP12

TP14

C3 C4

TP7

TP8

TP4

TP1

TP11

TP13

TP6

Schematic and Layouts

MCP1256/7/8/9 Charge Pump Evaluation Board User’s Guide

TP 9 TP 10

TP 5

TP 2 TP 3

C7 C8

TP 12

TP 14

C3 C4

TP 7

TP 8

TP 4

TP 1

TP 11

TP 13

TP 6

A.4 BOARD - TOP OVERLAY

A.5 BOARD - TOP LAYER

Schematic and Layouts

MCP1256/7/8/9 Charge Pump Evaluation Board User’s Guide

A.6 BOARD - BOTTOM LAYER

MCP1256/7/8/9 CHARGE PUMP

EVALUATION BOARD USER’S GUIDE

Appendix B. Bill Of Materials (BOM)

TABLE B-1: BILL OF MATERIALS (BOM)

Qty. Reference Description Mfgr. Part Number

4 C1,C2,C5,C6 10uF, X5R Ceramic, 10V, 1206 Taiyo Yuden 4 C3,C4,C7,C8 1uF, X7R Ceramic, 16V, 0603 Taiyo Yuden EMK107BJ105KA-TR 6 R1,R2,R3,R4,R5,R6 100k, 1/10W, Chip Resistor, 0603 Panasonic 12 TP1-TP12 Surface Mount Test Point, 5016 Keystone 1 U1 Positive Regulated Charge Pump,

MSOP10

1 U2 Positive Regulated Charge Pump,

MSOP10 4 — Bump-ons 3M SJ5003 1 — Printed Circuit Board Advanced Circuits 104-00099-R1

Microchip Technology, Inc.

-ECG ERJ-3EK1003V

Electronics 5016

LMK316BJ106KL-T

MCP1256-I/MS

MCP1259-I/MS

WORLDWIDE SALES AND SERVICE

AMERICAS

Corporate Office

2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: http://support.microchip.com Web Address: www.microchip.com

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Boston

Westborough, MA Tel: 774-760-0087 Fax: 774-760-0088

Chicago

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Dallas

Addison, TX Tel: 972-818-7423 Fax: 972-818-2924

Detroit

Farmington Hills, MI Tel: 248-538-2250 Fax: 248-538-2260

Kokomo

Kokomo, IN Tel: 765-864-8360 Fax: 765-864-8387

Los Angeles

Mission Viejo, CA Tel: 949-462-9523 Fax: 949-462-9608

San Jose

Mountain View, CA Tel: 650-215-1444 Fax: 650-961-0286

Toronto

Mississauga, Ontario, Canada Tel: 905-673-0699 Fax: 905-673-6509

ASIA/PACIFIC

Australia - Sydney

Tel: 61-2-9868-6733 Fax: 61-2-9868-6755

China - Beijing

Tel: 86-10-8528-2100 Fax: 86-10-8528-2104

China - Chengdu

Tel: 86-28-8676-6200 Fax: 86-28-8676-6599

China - Fuzhou

Tel: 86-591-8750-3506 Fax: 86-591-8750-3521

China - Hong Kong SAR

Tel: 852-2401-1200 Fax: 852-2401-3431

China - Qingdao

Tel: 86-532-8502-7355 Fax: 86-532-8502-7205

China - Shanghai

Tel: 86-21-5407-5533 Fax: 86-21-5407-5066

China - Shenyang

Tel: 86-24-2334-2829 Fax: 86-24-2334-2393

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Tel: 86-755-8203-2660 Fax: 86-755-8203-1760

China - Shunde

Tel: 86-757-2839-5507 Fax: 86-757-2839-5571

China - Wuhan

Tel: 86-27-5980-5300 Fax: 86-27-5980-5118

China - Xian

Tel: 86-29-8833-7250 Fax: 86-29-8833-7256

ASIA/PACIFIC

India - Bangalore

Tel: 91-80-4182-8400 Fax: 91-80-4182-8422

India - New Delhi

Tel: 91-11-5160-8631 Fax: 91-11-5160-8632

India - Pune

Tel: 91-20-2566-1512 Fax: 91-20-2566-1513

Japan - Yokohama

Tel: 81-45-471- 6166 Fax: 81-45-471-6122

Korea - Gumi

Tel: 82-54-473-4301 Fax: 82-54-473-4302

Korea - Seoul

Tel: 82-2-554-7200 Fax: 82-2-558-5932 or 82-2-558-5934

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Philippines - Manila

Tel: 63-2-634-9065 Fax: 63-2-634-9069

Singapore

Tel: 65-6334-8870 Fax: 65-6334-8850

Taiwan - Hsin Chu

Tel: 886-3-572-9526 Fax: 886-3-572-6459

Taiwan - Kaohsiung

Tel: 886-7-536-4818 Fax: 886-7-536-4803

Taiwan - Taipei

Tel: 886-2-2500-6610 Fax: 886-2-2508-0102

Thailand - Bangkok

Tel: 66-2-694-1351 Fax: 66-2-694-1350

EUROPE

Austria - Wels

Tel: 43-7242-2244-399 Fax: 43-7242-2244-393

Denmark - Copenhagen

Tel: 45-4450-2828 Fax: 45-4485-2829

France - Paris

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Germany - Munich

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Italy - Milan

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Netherlands - Drunen

Tel: 31-416-690399 Fax: 31-416-690340

Spain - Madrid

Tel: 34-91-708-08-90 Fax: 34-91-708-08-91

UK - Wokingham

Tel: 44-118-921-5869 Fax: 44-118-921-5820

02/16/06

Microchip Technology MCP1256 Charge Pump Evaluation Board, MCP1257 Charge Pump Evaluation Board, MCP1258 Charge Pump Evaluation Board, MCP1259 Charge Pump Evaluation Board User guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Preface

Chapter 1. Product Overview

1.1 INTRODUCTION

1.2 WHAT IS THE MCP1256/7/8/9 CHARGE PUMP EVALUATION BOARD?

Chapter 2. Installation and Operation

2.1 INTRODUCTION

2.2 FEATURES

2.3 GETTING STARTED

Appendix A. Schematic and Layouts

A.1 INTRODUCTION

Appendix B. Bill Of Materials (BOM)

WORLDWIDE SALES AND SERVICE