Microchip Technology Voltage Supervisor SOT23 User Manual

Page 1
Voltage Supervisor SOT23
Evaluation Board
User’s Guide
© 2006 Microchip Technology Inc. DS51510B
Page 2
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.
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in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates.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 the buyer’s risk, and the buyer agrees to defend, indemnify and 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.
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The Microchip name and logo, the Microchip logo, Accuron, dsPIC, K
EELOQ, microID, MPLAB, PIC, PICmicro, PICSTART,
PRO MATE, PowerSmart, rfPIC and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.
AmpLab, FilterLab, Migratable Memory, MXDEV, MXLAB, SEEVAL, SmartSensor 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, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, Linear Active Thermistor, Mindi, MiWi, MPASM, MPLIB, MPLINK, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, 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.
© 2006, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona, Gresham, Oregon and Mountain View, California. The Company’s quality system processes and procedures are for its PICmicro 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.
®
8-bit MCUs, KEELOQ
®
code hopping devices, Serial
DS51510B-page ii © 2006 Microchip Technology Inc.
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VOLTAGE SUPERVISOR
SOT23 EVALUATION BOARD
USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 1
Chapter 1. Product Overview ........................................................................................ 5
1.1 Introduction ..................................................................................................... 5
1.2 What is the Voltage Supervisor SOT23 Evaluation Board ? .......................... 5
1.3 What the Voltage Supervisor SOT23 Evaluation Board Kit Includes ............ 5
Chapter 2. Installation and Operation .......................................................................... 7
2.1 Introduction ..................................................................................................... 7
2.2 Features ......................................................................................................... 7
2.3 Getting Started ............................................................................................... 8
2.4 Voltage Supervisor SOT23 Evaluation Board Description .......................... 12
2.5 Evaluating the Device ................................................................................... 13
Appendix A. Schematic and Layouts ........................................................................ 15
A.1 Introduction .................................................................................................. 15
A.2 Schematics and PCB Layout ....................................................................... 15
A.3 Board Schematic 1 ..................................................................................... 16
A.4 Board Layout - Top Layer With Silk Screen ............................................. 17
Appendix B. Bill Of Materials (BOM) ......................................................................... 19
Appendix C. Microchip Analog SOT-23 Device Compatibility ................................ 21
C.1 Introduction .................................................................................................. 21
C.2 PCB Compatibility ........................................................................................ 21
C.3 Ideas on Evaluating An LDO ....................................................................... 22
Worldwide Sales and Service .................................................................................... 24
© 2006 Microchip Technology Inc. DS51510B-page iii
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Voltage Supervisor SOT23 Evaluation Board User’s Guide
NOTES:
DS51510B-page iv © 2006 Microchip Technology Inc.
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VOLTAGE SUPERVISOR
SOT23 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.

INTRODUCTION

This chapter contains general information that will be useful to know before using the Voltage Supervisor SOT23 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 Voltage Supervisor SOT23 Evaluation Board as a development tool. The manual layout is as follows:
Chapter 1. “Product Overview” – Important information about the Voltage Supervisor SOT23 Evaluation Board.
Chapter 2. “Installation and Operation” – Includes instructions on how to get started with this evaluation board.
Appendix A. “Schematic and Layouts” – Shows the schematic and layout diagrams for the Voltage Supervisor SOT23 Evaluation Board.
Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the Volt­age Supervisor SOT23 Evaluation Board.
Appendix C. “Microchip Analog SOT-23 Device Compatibility” – Explains how this board (PCB) may be used with other Microchip Analog devices in the SOT-23-3 package.
© 2006 Microchip Technology Inc. DS51510B-page 1
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Voltage Supervisor SOT23 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...

RECOMMENDED READING

For more information regarding the Voltage Supervisor and Voltage Detector devices, the specific device data sheet is recommended reading. Table shows the device and associated Data Sheet literature number. These documents can be downloaded from the Microchip web site at: www.microchip.com.
DEVICES AND DATA SHEET LITERATURE NUMBERS
Device Literature # Device Literature # Device Literature #
MCP100 DS 11187 MCP809 DS11194 TC1277 DS21383
MCP101 DS 11187 MCP810 DS11194 TC1278 DS21384
MCP102 DS21906 TC51 DS21429 TC1279 DS21384
MCP103 DS21906 TC54 DS21434 TCM809 DS21661
MCP111 DS21889 TC1272 DS21382 TCM810 DS21661
MCP112 DS21889 TC1272A DS21877
MCP120 DS 11184 TC1273 DS21382
MCP121 DS21906 TC1274 DS21382
MCP130 DS 11184 TC1275 DS21383
MCP131 DS21906 TC1276 DS21383
DS51510B-page 2 © 2006 Microchip Technology Inc.
Page 7

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 events, listings of Microchip sales offices, distributors and factory representatives

CUSTOMER SUPPORT

Users of Microchip products can receive assistance through several channels:
• Distributor or Representative
• Local Sales Office
• Field Application Engineer (FAE)
• Technical Support
• Development Systems Information Line
Customers should contact their distributor, representative or field application engineer 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
Preface

DOCUMENT REVISION HISTORY

Revision B (July 2006)
• Add disclaimer to Bill of Materials regarding RoHS-Compliant part numbers
• Removed Appendix D and incorporated information here.
Revision A (September 2004)
• Initial Release of this Document.
© 2006 Microchip Technology Inc. DS51510B-page 3
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Voltage Supervisor SOT23 Evaluation Board User’s Guide
NOTES:
DS51510B-page 4 © 2006 Microchip Technology Inc.
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VOLTAGE SUPERVISOR
SOT23 EVALUATION BOARD
USER’S GUIDE

Chapter 1. Product Overview

1.1 INTRODUCTION

This chapter provides an overview of the Voltage Supervisor SOT23 Evaluation Board and covers the following topics:
• What is the Voltage Supervisor SOT23 Evaluation Board ?
• What the Voltage Supervisor SOT23 Evaluation Board kit includes

1.2 WHAT IS THE VOLTAGE SUPERVISOR SOT23 EVALUATION BOARD ?

The Voltage Supervisor SOT23 Evaluation Board allows the system designer to quickly evaluate the operation of Microchip Technology’s Voltage Supervisors and Voltage Detectors in the SOT-23-3 (3-pin SOT-23) package.
The Voltage Supervisor SOT23 Evaluation Board PCB supports the four different SOT-23-3 pinouts for the product family. This board has been made generic so that other devices may be supported with this board.

1.3 WHAT THE VOLTAGE SUPERVISOR SOT23 EVALUATION BOARD KIT INCLUDES

This Voltage Supervisor SOT23 Evaluation Board Kit includes:
• Five Voltage Supervisor SOT23 Evaluation Board Printed Circuit Boards (PCBs)
• Five MCP112 device samples (MCP112T-270E/TT) that can be installed on the Voltage Supervisor SOT23 Evaluation Board PCBs
- 2.63V Trip Point (Typical)
- Extended Temperature
- SOT-23-3 Package
• Voltage Supervisor SOT23 Evaluation Board User’s Guide (Electronic Version on CD)
• Analog and Interface Products Demonstration Boards CD-ROM (DS21912)
© 2006 Microchip Technology Inc. DS51510B-page 5
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Voltage Supervisor SOT23 Evaluation Board User’s Guide
NOTES:
DS51510B-page 6 © 2006 Microchip Technology Inc.
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Chapter 2. Installation and Operation

2.1 INTRODUCTION

The blank Printed Circuit Board (PCB) allows the desired voltage supervisor or voltage detector device to be installed along with other desired passive components (resistor and capacitors) and connection posts.
The Voltage Supervisor SOT23 Evaluation Board PCB supports four different SOT-23-3 pinouts. Three of these pinouts are used by the Voltage Supervisor or Voltage Detector product family, while the fourth is used by other Microchip analog products (see Appendix C. “Microchip Analog SOT-23 Device Compatibility”). This board has been made generic so that other devices may be supported with this board. However, the silk screen markings are designed for ease-of-use with the voltage supervisor devices.

2.2 FEATURES

The Voltage Supervisor SOT23 Evaluation Board has the following features:
• Connection terminals may be either through-hole or surface-mount
• Four SOT-23-3 pinouts supported
• Optional passive components for:
- Power Supply Filtering
- Output Filtering
- Output Pull-up Resistor
- Output Pull-down Resistor
- Output Loading Resistor
- Output Series Resistor
• Silk screen area to write specifics of implemented circuit , such as MCP111, 2.7V, 10 kΩ (to indicate that the device is the MCP111 with the 2.7V trip point and an external 10 kΩ pull-up resistor on the output)
VOLTAGE SUPERVISOR
SOT23 EVALUATION BOARD
USER’S GUIDE
© 2006 Microchip Technology Inc. DS51510B-page 7
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Voltage Supervisor SOT23 Evaluation Board User’s Guide

2.3 GETTING STARTED

The Voltage Supervisor SOT23 Evaluation Board is a blank PCB that allows the user to configure the circuit to their exact requirements. The Passive components use the surface mount 805 package layout. Figure 2-1 shows the board circuit. Table 2-1 shows which circuit option needs to be used for a given voltage supervisor/voltage detector. There are currently no voltage supervisors/voltage detectors that use the Option 3 pinout. For other Microchip Analog Devices, please refer to Appendix C. “Microchip
Analog SOT-23 Device Compatibility”.
FIGURE 2-1: VOLTAGE SUPERVISOR SOT23 EVALUATION BOARD SCHEMATIC
2
U1
Option 1
3
3
U1
Option 2
1
1
2
R1
R2
(1)
V
(1)
R3
(1)
OUT
V
SS
VDD
C1
(1)
Pinout not used by
voltage supervisors,
but other SOT-23-3 devices
(such as voltage references)
3
U1
Option 3
1
2
U1
Option 4
3
(1)
C2
2
1
Note 1: Components C1, C2, R1, R2 and R3
are placed to support different devices and configurations. These components may not be required for some configurations.
2: For Option 1, use: MCP112T-270/NB
For Option 2, use: TCM809RVNB713 For Option 3, use: MCP1525 (a V For Option 4, use: MCP100T-270I/TT
REF
)
DS51510B-page 8 © 2006 Microchip Technology Inc.
Page 13
Installation and Operation
TABLE 2-1: VOLTAGE SUPERVISOR / VOLTAGE DETECTOR DEVICES AND
EVAL BOARD CIRCUIT/FOOTPRINT OPTION
Device
MCP111 Option 1 V
MCP112 Option 1 V
TC54VC Option 1 V
TC54VN Option 1 V
TC51 Option 1 Open-Drain R1 = 47 kΩ
MCP103 Option 2 RST
TCM809 Option 2 RESET
TCM810 Option 2 RESET (H) Push-Pull
MCP809 Option 2 RESET
MCP810 Option 2 RESET
MCP102 Option 4 RST
MCP121 Option 4 RST
MCP131 Option 4 RST
TC1275 Option 4 RESET
Supported
on
Output Signal
(Active State)
(L) Open-Drain R1 = 100 kΩ
OUT
(L) Push-Pull
OUT
(L) Push-Pull
OUT
(L) Open-Drain R1 = 270Ω
OUT
V
(L)
OUT
(L) Push-Pull
(L) Push-Pull
(L) Push-Pull C1 = 0.1 µF
(L) Push-Pull C1 = 0.1 µF
(L) Push-Pull
(L) Open-Drain with Internal Pull-up
(L) Open-Drain R1 = 100 kΩ
(L) Push-Pull C1 = 0.1 µF
Output Type
Comment/Recommended
component values
TC1276 Option 4 RESET
TC1277 Option 4 RESET (H) Push-Pull C1 = 0.1 µF
TC1278 Option 4 RESET (H) Open-Drain with Internal Pull-up
TC1279 Option 4 RESET
TC1272 Option 4 RESET
TC1272A Option 4 RESET
TC1273 Option 4 RESET
TC1274 Option 4 RESET (H) Push-Pull C1 = 0.1 µF
MCP100 Option 4 RESET
MCP101 Option 4 RESET (H) Push-Pull
MCP120 Option 4 RESET
MCP130 Option 4 RESET
(L) Open-Drain C1 = 0.1 µF
R1 = 47 kΩ
(L) Open-Drain with Internal Pull-up
(L) Push-Pull C1 = 0.1 µF
(L) Push-Pull C1 = 0.1 µF
(L) Open-Drain C1 = 0.1 µF
R1 = 47 kΩ
(L) Push-Pull
(L) Open-Drain C1 = 0.1 µF
R1 = 47 kΩ
(L) Open-Drain with Internal Pull-up
C1 = 0.1 µF
© 2006 Microchip Technology Inc. DS51510B-page 9
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Voltage Supervisor SOT23 Evaluation Board User’s Guide
2.3.1 The Hardware
Figure 2-2 shows the layout of the Voltage Supervisor SOT23 Evaluation Board . This is a small board (1”x1.2” (25.4 mm x 30.5 mm)) that is single-sided. There are three connection points (V surface-mount connector posts. Additionally, a test point is available on the device V
, which may be useful if Resistor R3 is installed.
OUT
The different SOT-23-3 layout options are outlined in the diagram below, with Opt 1, Opt 2, Opt 3 and Opt 4 indicating the layout option of that SOT-23-3 footprint.
Resistor R1 is a pull-up resistor that may need to be installed for devices with an open-drain output. Though resistor R2 is not currently required, it was placed for possible future requirements. Resistor R3, too, is not required, but may be useful if this board is to be interfaced into existing circuits. If resistor R3 is to be installed, remember to cut the trace that “shorts out” R3. Capacitors C1 and C2 are bypass capacitors that may be required to be installed, depending on the device selected and the system requirements (such as the noise present on the power supply). Table 2-2 describes the components.
FIGURE 2-2: VOLTAGE SUPERVISOR SOT23 EVALUATION BOARD
, VSS and V
DD
LAYOUT
) that can use either through-hole or
OUT
Silk-screen area to write specifics of implemented circuit (ex: MCP112, 2.7V to indicate that the device is the MCP112 with the 2.7V trip point).
DS51510B-page 10 © 2006 Microchip Technology Inc.
Test Point: If R3 is installed, signal may be different than V
OUT
.
Page 15
Installation and Operation
TABLE 2-2: OPTIONAL PASSIVE COMPONENTS
Device Comment
C1 Power Supply Bypass Capacitor
C2 Output Filter Capacitor
R1 Pull-up Resistor
R2 Pull-down Resistor
R3 Inline Resistance of Device output
© 2006 Microchip Technology Inc. DS51510B-page 11
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Voltage Supervisor SOT23 Evaluation Board User’s Guide

2.4 VOLTAGE SUPERVISOR SOT23 EVALUATION BOARD DESCRIPTION

The Voltage Supervisor SOT23 Evaluation Board PCB is designed to be flexible in the type of device evaluation that can be implemented.
The following sections describe each element of this evaluation board in further detail.
2.4.1 Power and Ground
The Voltage Supervisor SOT23 Evaluation Board can have connection posts installed for the power (V surface-mount connectors.
For device evaluation, the use of an external variable power supply or waveform generator is required. The type of equipment used will determine the evaluation that may be performed.
) and ground (VSS) planes. The layout allows either through-hole or
DD
2.4.2 Output (V
OUT
)
The Voltage Supervisor SOT23 Evaluation Board can have a connection post installed for the output (V
) signal. The layout allows either a through-hole connector or a
OUT
surface mount connector.
For device evaluation, the use of an oscilloscope or digital volt meter (DVM) is required. The type of equipment used will determine the evaluation that may be performed.
2.4.3 SOT-23-3 Footprints
There are four SOT-23-3 pinout options that the Voltage Supervisor SOT23 Evaluation Board PCB supports. Figure 2-3 shows these four pinouts. Some devices may use dif­ferent nomenclature for the pin names, such as GND instead of V and RESET (or RESET
) or RST instead of V
OUT
.
Other Microchip analog devices may be used with this PCB if the power and ground pins match one of these four options. Appendix C. “Microchip Analog SOT-23 Device Compatibility” discusses other Microchip analog devices that may be used with this PCB.
FIGURE 2-3: PINOUT OPTIONS
Option 1
V
DD
3
Option 2 Option 3 Option 4
V
DD
3
V
SS
3
, VIN instead of VDD
SS
V
SS
3
V
OUT
1
V
2
SS
1
VSSV
OUT
2
1
2
V
V
DD
V
OUT
OUT
1
2
V
DD
2.4.4 Passive Components (C1, C2, R1, R2 and R3)
The footprints for these components are present to allow maximum flexibility in the use of this PCB to evaluate a wide range of SOT-23-3 devices. The purpose of these com­ponents may vary depending on the device under evaluation and how it is to be used in the desired circuit. Please refer to the device data sheet for the components that should be used when using that device.
DS51510B-page 12 © 2006 Microchip Technology Inc.
Page 17

2.5 EVALUATING THE DEVICE

When evaluating a Voltage Supervisor or Voltage Detector device, a minimum set of test equipment should be available. Table 2-3 shows the recommended test equipment.
TABLE 2-3: TEST EQUIPMENT
Hardware Connect to: Comment
Variable Power Supply
Arbitary Waveform Generator
Digital Multi-Meter (D.M.M.)
Oscilloscope V
Test Light (LED) V
Installation and Operation
VDD, VSS This allows the voltage to the SOT23 Evaluation Board
to be varied so the device output can be monitored.
VDD, VSS This is like a variable power supply, but allows program-
ablity into the input signal that the device will be subjected to. This also allows a particular waveform to be repeated (such as a 60 Hz sine wave that varies from 1V to 5V)
V
OUT
OUT
OUT
Used to indicate the output state (Low or High) of the Voltage Supervisor/Voltage Detector.
Allows the device conditions and response to be better evaluated due to the ability to capture this information. This is useful for faster signals and cases where small spikes need to be detected.
Used to visually indicate the output state (low or high) of the Voltage Supervisor/Voltage Detector. Ensure that the current requirements of this light can be supplied by the device’s output pin.
A typical system that would be used to evaluate the voltage supervisor or voltage detector device is shown in Figure 2-4. Figure 2-4 also shows an example input and output waveforms for a voltage supervisor or voltage detector device.
FIGURE 2-4: EVALUATION SYSTEM
Variable
Power
Supply
or
Arbitary Waveform Generator
Arbitary Waveform Generator Output
Test Point or
V
OUT
SOT23 Evaluation Board PCB
Voltage
Supervisor
or
Voltage
Detector
Device VDD out of Valid Operating Range Output voltage may be indeterminate
C2
R3
Test Point
Oscilloscope
© 2006 Microchip Technology Inc. DS51510B-page 13
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Voltage Supervisor SOT23 Evaluation Board User’s Guide
NOTES:
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SOT23 EVALUATION BOARD

Appendix A. Schematic and Layouts

A.1 INTRODUCTION

This appendix contains the schematics and layouts for the Voltage Supervisor SOT23 Evaluation Board . Diagrams included in this appendix:
• Board Schematic - Digital Circuitry
• Board - Top Layer

A.2 SCHEMATICS AND PCB LAYOUT

Figure A.3 shows the schematic of the Voltage Supervisor SOT23 Evaluation Board .
Figure A.4 shows the layout for the top layer of the Voltage Supervisor SOT23 Evaluation Board . The layer order is shown in Figure A-1.
FIGURE A-1: LAYER ORDER
VOLTAGE SUPERVISOR
USER’S GUIDE
Top Layer (Power, Ground, and Signals)
Bottom Layer (Blank)
© 2006 Microchip Technology Inc. DS51510B-page 15
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Voltage Supervisor SOT23 Evaluation Board User’s Guide
A.3 BOARD SCHEMATIC 1
M
DS51510B-page 16 © 2006 Microchip Technology Inc.
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Schematic and Layouts

A.4 BOARD LAYOUT - TOP LAYER WITH SILK SCREEN

© 2006 Microchip Technology Inc. DS51510B-page 17
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VOLTAGE SUPERVISOR
SOT23 EVALUATION BOARD
USER’S GUIDE

Appendix B. Bill Of Materials (BOM)

TABLE B-1: BILL OF MATERIALS
Qty Reference Description Manufacturer Part Number
1 PCB 103-00030 SOT23 Evaluation Board PCB Microchip
Technology Inc.
0 U1, U2, U3, U4 SOT-23-3 Device
(Only one of U1 - U4 installed per board)
0 C1 Power Supply Bypass Capacitor
Surface-mount (805 package) (Optional - Application-dependent)
0 C2 Output Filer Capacitor
Surface-mount (805 package) (Optional - Application-dependent)
0 R1 Output Pull-up resistor
Surface-mount (805 package) (Optional - Application-dependent)
0 R2 Output Pull-down resistor
Surface-mount (805 package) (Optional - Application-dependent)
0 R3 Output inline resistor
Surface-mount (805 package) (Optional - Application-dependent)
0V
0V
Note 1: The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM
, VSS, V
DD
, VSS, V
DD
used in manufacturing uses all RoHS-compliant components.
VDD, VSS and V
OUT
connector
VDD, VSS and V
OUT
connector
through-hole
OUT
surface-mount
OUT
Microchip
Technology Inc.
User-specified
User-specified
User-specified
User-specified
User-specified
Keystone
Electrionics
Keystone
Electrionics
®
103-00030
User-specified
5012
5016
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VOLTAGE SUPERVISOR
SOT23 EVALUATION BOARD
USER’S GUIDE

Appendix C. Microchip Analog SOT-23 Device Compatibility

C.1 INTRODUCTION

This appendix documents other Microchip analog devices that can be evaluated using this PCB. New devices may be introduced after the publication of this document that may be supported. Compare the pinout of the device to the PCB schematic/layout to determine compatibility of any SOT-23-3 (3-pin SOT-23) packaged device.

C.2 PCB COMPATIBILITY

There are four SOT-23-3 (3-pin SOT-23) pinouts that the Voltage Supervisor SOT23 Evaluation Board PCB supports. Figure C-1 shows these four pinouts. Other Microchip analog devices may be used with this PCB if the power and ground pins match one of these four options. Though these devices may use different nomenclature for the pin names, as long as the power and ground signals match one of the four options, this PCB should be able to be used to evaluate that device.
Table C-1 shows the Microchip analog device part number, the analog family the device belongs to, which footprint option to use and the recommended components to use for the circuit. Please refer to the device data sheet for complete information of the appli­cation circuit.
FIGURE C-1: SOT-23-3 PINOUT OPTIONS
Option 1
1
V
OUT
V
DD
3
V
2
SS
Option 2 Option 3 Option 4
V
DD
1
VSSV
3
2
OUT
V
SS
3
1
V
V
DD
2
V
OUT
OUT
V
SS
3
1
2
V
DD
© 2006 Microchip Technology Inc. DS51510B-page 21
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Voltage Supervisor SOT23 Evaluation Board User’s Guide
TABLE C-1: MICROCHIP ANALOG DEVICES AND SOT23 EVAL BOARD
CIRCUIT/FOOTPRINT OPTION SELECTION
Device Device Family
MCP1700 LDO Option 2 C1 = 1 µF Ceramic
MCP1701 LDO Option 2 C1 = 1 µF Tantalum
MCP1525 Voltage Reference Option 3 C1 = 0.1 µF
MCP1541 Voltage Reference Option 3 C1 = 0.1 µF
TC59 LDO Option 4 C1 = 1 µF Tantalum

C.3 IDEAS ON EVALUATING AN LDO

One of the characteristics that a designer may wish to evaluate on a LDO is how the LDO responds to transient loads. Figure C-2 shows a system block diagram for evaluating a LDO and a typical waveform response (at test point) for the function generator signal. The output of the function generator connects to a BJT transistor to simulate the fast switching loads of the circuit.
The value of C2, R3 and C Look at both the worst-case amplitude load requirements for a loaded and unloaded system. As the output response of the LDOs become faster, the selection of a smaller (cheaper) output load capacitor (C performance).
will depend on the LDO used and the load of the circuit.
L
Supported
on
) becomes possible (for the same system
L
Comment/ Recommended Component Values:
C2 = 1 µF Ceramic
C2 = 1 µF Tantalum
C2 = 1 µF to 10 µF
C2 = 1 µF to 10 µF
C2 = 1 µF Tantalum
FIGURE C-2: LDO EVALUATION SYSTEM
SOT23 Evaluation Board PCB
Power Supply
Function Generator Output
Test Point
DS51510B-page 22 © 2006 Microchip Technology Inc.
LDO
C2
C
L
R3
Test Point
From Function Generator
Page 27
NOTES:
Microchip Analog SOT-23 Device Compatibility
© 2006 Microchip Technology Inc. DS51510B-page 23
Page 28

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