Voltage Supervisor SOT-23-5/6 Evaluation Board User's Guide

Voltage Supervisor SOT-23-5/6
Evaluation Board
User’s Guide
© 2006 Microchip Technology Inc.
DS51527B
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
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•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
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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
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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
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Information contained in this publication regarding device
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and may be superseded by updates. It is your responsibility to
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PRO MATE, PowerSmart, rfPIC and SmartShunt are
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Company are registered trademarks of Microchip Technology
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Analog-for-the-Digital Age, Application Maestro, dsPICDEM,
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FanSense, FlexROM, fuzzyLAB, In-Circuit Serial
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© 2006, Microchip Technology Incorporated, Printed in the
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Printed on recycled paper.
Microchip received ISO/TS-16949:2002 certification for its worldwide
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Company’s quality system processes and procedures are for its
PICmicro® 8-bit MCUs, KEELOQ® code hopping devices, Serial
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.
DS51527B-page ii
© 2006 Microchip Technology Inc.
VOLTAGE SUPERVISOR SOT-23-5/6
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 SOT-23-5/6 Evaluation Board? .................... 5
1.3 What the Voltage Supervisor SOT-23-5/6 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 SOT-23-5/6 Evaluation Board Description .................... 16
2.5 Voltage Supervisor/Voltage Detector Circuits .............................................. 19
2.6 Digital Potentiometer Circuit ......................................................................... 23
Appendix A. Schematics and Layouts ....................................................................... 25
A.1 Introduction .................................................................................................. 25
A.2 Schematics and PCB Layout ....................................................................... 25
A.3 Schematic .................................................................................................. 26
A.4 Board Layout – Top Layer, Bottom Layer and Silk Screen .......................... 27
A.5 Board Layout – Top Layer and Silk Screen ................................................. 28
A.6 Board Layout – Bottom Layer ...................................................................... 29
A.7 Board Layout – Ground Plane ..................................................................... 30
A.8 Board Layout – Power Layer ....................................................................... 31
A.9 Board Layout – Top Components and Silk Screen ...................................... 32
Appendix B. Bill Of Materials (BOM) .......................................................................... 33
Appendix C. Microchip SOT-23-5/6 Device Compatibility ........................................ 35
C.1 Introduction .................................................................................................. 35
C.2 PCB Compatibility ........................................................................................ 35
C.3 Ideas on Evaluating An LDO ....................................................................... 39
Worldwide Sales and Service ..................................................................................... 40
© 2006 Microchip Technology Inc.
DS51527B-page iii
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
NOTES:
DS51527B-page iv
© 2006 Microchip Technology Inc.
VOLTAGE SUPERVISOR SOT-23-5/6
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® IDE on-line help.
Select the Help menu, and then Topics to open a list of available on-line help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
Voltage Supervisor SOT-23-5/6 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 SOT-23-5/6 Evaluation
Board. The manual layout is as follows:
• Chapter 1. “Product Overview” – Important information about the Voltage
Supervisor SOT-23-5/6 Evaluation Board.
• Chapter 2. “Installation and Operation”– Includes instructions on how to get
started with the Voltage Supervisor SOT-23-5/6 Evaluation Board.
• Appendix A. “Schematics and Layouts” – Shows the schematic and layout
diagrams for the Voltage Supervisor SOT-23-5/6 Evaluation Board.
• Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the
Voltage Supervisor SOT-23-5/6 Evaluation Board.
• Appendix C. “Microchip SOT-23-5/6 Device Compatibility” – Explains how this
board may be used with other Microchip analog devices in the SOT-23-5 or
SOT-23-6 packages.
© 2006 Microchip Technology Inc.
DS51527B-page 1
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
Represents
Examples
MPLAB® IDE User’s Guide
...is the only compiler...
Referenced books
Emphasized text
RECOMMENDED READING
Table 1-1 shows the device and associated data sheet literature number. These
documents can be downloaded from the Microchip web site at: www.microchip.com.
TABLE 1-1:
Device
DS51527B-page 2
DEVICES AND DATA SHEET LITERATURE NUMBERS
Literature #
Device
Literature #
Device
Literature #
MCP601
21314
MCP6541
21690
TC52
21430
MCP601R
21314
MCP6541R
21690
TC53
21432
MCP606
11177
MCP6546
21714
TC54
21434
MCP6001
21733
MCP6546R
21714
TC105
21349
MCP6001R
21733
MCP3221
21732
TC77
20092
MCP6001U
21733
MCP9800
21909
MCP603
21314
MCP6231
21881
MCP9802
21909
TC1035
21343
MCP6231R
21881
MCP4012
21978
MCP4022
21916
MCP6231U
21881
MCP4013
21978
MCP4023
21916
MCP6241
21882
MCP4014
21978
MCP4024
21916
MCP6241R
21882
TC1014
21335
MCP73826
21705
MCP6241U
21882
TC1015
21335
PIC10F200
41239
MCP1316
21985
TC1017
21813
PIC10F202
41239
MCP1317
21985
TC1054
21350
PIC10F204
41239
MCP1318
21985
TC1055
21350
PIC10F206
41239
MCP1319
21985
TC1070
21353
TC1185
21350
MCP1320
21985
TC1071
21353
TC1186
21353
MCP1321
21985
TC1034
21343
TC1187
21368
MCP1322
21985
TC1037
21344
TC1223
21368
TC2014
21662
TC1038
21344
TC1224
21368
TC2015
21662
TC1039
21344
TC2055
21663
TC2185
21662
TC2054
21663
TC2186
21663
© 2006 Microchip Technology Inc.
Preface
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
DOCUMENT REVISION HISTORY
Revision B (May 2006)
• Updated Bill of Materials (BOM) to show RoHS-compliant part numbers.
Revision A (January 2005)
• Initial Release of this Document.
© 2006 Microchip Technology Inc.
DS51527B-page 3
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
NOTES:
DS51527B-page 4
© 2006 Microchip Technology Inc.
VOLTAGE SUPERVISOR SOT-23-5/6
EVALUATION BOARD USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
This chapter provides an overview of the Voltage Supervisor SOT-23-5/6 Evaluation
Board and covers the following topics:
• What is the Voltage Supervisor SOT-23-5/6 Evaluation Board?
• What the Voltage Supervisor SOT-23-5/6 Evaluation Board Kit includes
1.2
WHAT IS THE VOLTAGE SUPERVISOR SOT-23-5/6 EVALUATION BOARD?
The Voltage Supervisor SOT-23-5/6 Evaluation Board allows the system designer to
quickly evaluate the operation of Microchip Technology’s voltage supervisors and
voltage detectors in the SOT-23-5 (5-pin SOT-23) or SOT-23-6 (6-pin SOT-23)
packages.
The Voltage Supervisor SOT-23-5/6 Evaluation Board Printed Circuit Board (PCB)
supports the four different SOT-23-6 pinouts (which also supports compatible
SOT-23-5 footprints) and one SOT-23-5 footprint.
The Voltage Supervisor SOT-23-5/6 Evaluation Board has been made generic so that
other devices in the SOT-23-5 and SOT-23-6 packages may be supported with this
board. Microchip device families supported include:
•
•
•
•
•
•
•
•
•
•
1.3
Voltage Supervisors/Voltage Detectors
Nonvolatile Digital Potentiometers (Digi-Pots)
Operational Amplifiers (Op Amps)
Comparators
Low Drop-out Regulators (LDOs)
Thermal sensors
Analog-to-Digital Converters (ADCs)
PFM/PWM Step-Down DC/DC Controllers
Battery Charger Controllers
PICmicro® Microcontrollers
WHAT THE VOLTAGE SUPERVISOR SOT-23-5/6 EVALUATION BOARD KIT
INCLUDES
This Voltage Supervisor SOT-23-5/6 Evaluation Board Kit includes:
• Five Voltage Supervisor SOT-23-5/6 Evaluation Board PCBs
• Three voltage supervisor device samples that can be installed on the Voltage
Supervisor SOT-23-5/6 Evaluation Board PCBs
• Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
(Electronic version on CD)
© 2006 Microchip Technology Inc.
DS51527B-page 5
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
NOTES:
DS51527B-page 6
© 2006 Microchip Technology Inc.
VOLTAGE SUPERVISOR SOT-23-5/6
EVALUATION BOARD USER’S GUIDE
Chapter 2. Installation and Operation
2.1
INTRODUCTION
The blank Printed Circuit Board (PCB) allows the desired voltage supervisor/voltage
detector device to be installed along with other desired passive components (resistors
and capacitors) and connection posts.
The PCB supports four different SOT-23-6 and one SOT-23-5 pinouts. Two of these
pinouts are used by the voltage supervisor/voltage detector product family, while the
other pinouts are used by other Microchip analog and PICmicro® microcontroller
products (see Appendix C. “Microchip SOT-23-5/6 Device Compatibility”). The
PIC10F2XX devices uses the last pinout. This board is generic so that other devices
may be supported. However, the silk-screen markings are designed for ease-of-use
with the voltage supervisor devices.
2.2
FEATURES
The Voltage Supervisor SOT-23-5/6 Evaluation Board has the following features:
• Connection terminals may be either through-hole or surface-mount
• Four SOT-23-6 pinouts supported
- Also supports VDD/VSS footprint-compatible SOT-23-5 devices
• One SOT-23-5 pinout supported
• Footprints for optional passive components for:
- Power supply filtering
- Device bypass capacitor
- Output filtering
- Output pull-up resistor
- Output pull-down resistor
- Output loading resistor
- Output series resistor
• Footprints for two optional switches for:
- Voltage supervisor manual resets
- PIC10F2XX general purpose inputs
• Silk screen area to write specifics of implemented circuit (on back of PCB), such
as TC52 2.7V, 10 kΩ (to indicate that the device is the TC52 with the 2.7V trip
point and an external 10 kΩ pull-up resistor on the output)
© 2006 Microchip Technology Inc.
DS51527B-page 7
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
2.3
GETTING STARTED
The Voltage Supervisor SOT-23-5/6 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.
This evaluation board supports the following Microchip device families:
•
•
•
•
•
•
•
•
•
•
Voltage Supervisors/Voltage Detectors
Nonvolatile Digital Potentiometers (Digi-Pots)
Operational Amplifiers (Op Amps)
Comparators
Low Drop-Out Regulators (LDOs)
Thermal Sensors
Aanalog-to-Digital Converters (ADCs)
PFM/PWM Step-Down DC/DC Controllers
Battery Charger Controllers
PICmicro® Microcontrollers
Table 2-1 shows these product families, the devices that are supported and which
SOT-23-5/6 layout option to use. Devices that are in a 5-pin SOT-23 package can be
installed into the SOT-23-6 footprint.
Table 2-2 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 B, C or E pinout. For other Microchip analog devices,
please refer to Appendix C. “Microchip SOT-23-5/6 Device Compatibility”.
DS51527B-page 8
© 2006 Microchip Technology Inc.
Installation and Operation
VDD
A B C D E
6 2 1 2 5
C5F
TP1A
VSS
R2A
TP 1
R3A
A B C D E
2 6 2 3 2
R1A
(VOUT
VIN+)
Option A
C5A
1
C1
2
3
C5B
A B C D E
1 1 6 1 1
6
TP4A
5
4
U1
R2D
S2
R3D
R1D
TP 4
(WDI
VIN–)
A B C D E
4 4 4 4 4
C5D
1
2
3
Option B
C2
U2
TP5A
6
5
TP 5
R3E
4
R1E
C5E
BFMP Header (Top)
2
3
1
2
C4
3
6
5
U3
4
5
U4
C6
4
TP1A
1
TP2A
2
TP3A
3
Option E
C3
Option C
1
TP3A (ICSPCLK)
TP1A (ICSPDT)
TP2A (VSS)
TP5A (VDD)
TP6A (VPP)
(WDI
VIN–)
A B C D E
5 5 5 5 6
No Connect
Option D
1
2
3
4
5
6
R2E
U5
6
TP5A
5
TP6A
4
TP4A
TP3A
R2C
S1
R3C
R1C
C5C
Footprint Option
(A, B, C, D or E)
Pin Number of that
Footprint Version
(1, 2, 3, 4, 5 or 6)
FIGURE 2-1:
A B C D E
3 3 3 — 3
Footprint Option/Pin Number
Combination (Pad A3)
TP 3 A B C D E
(MR 3 3 3 — 3
VIN+)
For:
Version A use: MCP13XX
Version B use: MCP1035
Version C use: MCP4022
Version D use: TC52
Version E use: PIC10F200
Voltage Supervisor SOT-23-5/6 Evaluation Board Circuit.
© 2006 Microchip Technology Inc.
DS51527B-page 9
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
TABLE 2-1:
SUPPORTED SOT-23-5 AND SOT-23-6 DEVICES
Family
Voltage Supervisors/Detectors
Digital Potentiometers (Digi-Pots) – Volatile
Digital Potentiometers (Digi-Pots) –
Nonvolatile
Operational Amplifiers (Op Amps)
Comparators
Thermal Sensors
Analog-to-Digital Converter (ADC)
DS51527B-page 10
Device
Option
# of Pins
TC52
D
5
TC53C
D
5
TC53N
D
5
TC54
D
5
MCP13XX
A
5
MCP4012
C
6
MCP4013
C
6
MCP4014
C
5
MCP4022
C
6
MCP4023
C
6
MCP4024
C
5
MCP601
A
5
MCP601R
B
5
MCP603
A
6
MCP606
A
5
MCP6001
A
5
MCP6001R
B
5
MCP6001U
A
5
MCP6231
A
5
MCP6231R
B
5
MCP6231U
A
5
MCP6241
A
5
MCP6241R
B
5
MCP6241U
A
5
TC1034
B
5
TC1035
B
6
MCP6541
A
5
MCP6541R
B
5
MCP6546
A
5
MCP6546R
B
5
TC1037
A
5
TC1038
A
6
TC1039
A
6
MCP9800
C
5
MCP9802
C
5
TC77
A
5
MCP3221
C
5
© 2006 Microchip Technology Inc.
Installation and Operation
TABLE 2-1:
SUPPORTED SOT-23-5 AND SOT-23-6 DEVICES (CONTINUED)
Family
PICmicro® Microcontrollers
Device
Option
# of Pins
PIC10F200
E
6
PIC10F202
E
6
PIC10F204
E
6
PIC10F206
E
6
TC1014
C
5
TC1015
C
5
TC1017
C
5
TC1054
C
5
TC1055
C
5
TC1070
C
5
TC1071
C
5
TC1185
C
5
TC1186
C
5
TC1187
C
5
TC1223
C
5
TC1224
C
5
TC2014
C
5
TC2015
C
5
TC2054
C
5
TC2055
C
5
TC2185
C
5
TC2186
C
5
PFM/PWM Step-Down DC/DC Controller
TC105
D
5
Battery Charger Controller
MCP73826
E
6
Low Drop-Out Regulators (LDOs)
© 2006 Microchip Technology Inc.
DS51527B-page 11
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
TABLE 2-2:
Device
VOLTAGE SUPERVISOR / VOLTAGE DETECTOR DEVICES AND EVALUATION
BOARD CIRCUIT/FOOTPRINT OPTION
Supported
on
Output Signal
(Active State)
Output Type
Comment/Recommended
Component Values
MCP1316
Option A
RST (L)
Push-Pull
MCP1317
Option A
RST (H)
Push-Pull
MCP1318
Option A
RST (H) and RST (L)
Push-Pull
MCP1319
Option A
RST (H) and RST (L)
Push-Pull
MCP1320
Option A
RST (L)
Open-Drain
R = TBD
MCP1321
Option A
RST (H) and RST (L)
Push-Pull and Open-Drain
R = TBD
MCP1322
Option A
RST (H) and RST (L)
Push-Pull and Open-Drain
R = TBD
TC52
Option D
VOUT1 (L),
VOUT2 (L)
Open-Drain
C4 = 0.1 µF, R2A = 47 kΩ
R2E = 47 kΩ, C1 = 1 µF
TC53C
Option D
VOUT (L)
Push-Pull
TC53N
Option D
VOUT (L)
Open-Drain
TC54VC
Option D
VOUT (L)
Push-Pull
TC54VN
Option D
VOUT (L)
Open-Drain
DS51527B-page 12
R2A = 47 kΩ
R2A = 47 kΩ
© 2006 Microchip Technology Inc.
Installation and Operation
2.3.1
The Hardware
Figure 2-2 shows the layout of the Voltage Supervisor SOT-23-5/6 Evaluation Board.
This is a small four-layer board (1.5" x 2" (38.1 mm x 50.8 mm)). There are six
connection points/pads that can use either through-hole or surface-mount connector
posts.
Additionally, a test point is available between the device pin and the PCB pad that may
be useful if the in-line resistor (R1A, R1C, R1D or R1E) is installed.
The different SOT-23 layout options are outlined in Section 2.4.3 “SOT-23-6 and
SOT-23-5 Footprints”, with Opt A, Opt B, Opt C, Opt D and Opt E indicating the layout
option of that SOT-23-5/6 footprint.
There are six pads on the PCB. One is labeled VDD, one is labeled VSS, with all pads
having a label that indicates the footprint option used (shown as “A B C D E”) and a
label underneath that indicates the pin number of that footprint. This footprint option/pin
number combination will be used to indicate the remaining pads. If the device is placed
in the option A footprint, the remaining pads would be A1, A3, A4 and A6, where the
VDD pad is also A6 and the VSS pad is A2. Figure 2-2 has text added on each pad to
show what the “pad name” would be (A1, A2, A3, A4, A5 and A6). If the device required
the option C footprint, what is currently A1 for option A would then be referred to as pad
C6 for option C.
Each of these four pads has four passive components associated with them. A pull-up
resistor, a pull-down resistor, an in-line resistor and a filtering/load capacitor. The
pull-up resistor is always R2x, the pull-down resistor is R3x, the in-line resistor is R1x
and the filtering/load capacitor is C5x. The “x” is an alpha character that corresponds
to a particular pad. So pad A1’s pull-up resistor is R2A.
The green area of Figure 2-2 shows the silk screen on the bottom layer of the PCB.
This is where the details of the implemented circuit can be written.
Resistor R2x is a pull-up resistor that may need to be installed for devices with an
open-drain output. Though resistor R3x is not currently required, it was placed for
possible future requirements. Resistor R1x is not required, but may be useful if this
board is to be interfaced into existing circuits. If resistor R1x is to be installed, remember to cut the trace that “shorts out” R3. Capacitors C1, C2, C3, C4, C6, C5A, C5C,
C5D, C5E and C5F 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 2-3 describes the components.
© 2006 Microchip Technology Inc.
DS51527B-page 13
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
A3
A6
A1
A5
A4
A2
FIGURE 2-2:
Voltage Supervisor SOT-23-5/6 Evaluation Board Layout with
added “Pad Names”.
TABLE 2-3:
OPTIONAL PASSIVE COMPONENTS
Device
DS51527B-page 14
Comment
C1, C2, C3, C4, C5, C5F, C6
Power supply bypass capacitor
C5A, C5C, C5D, C5E
Output filter capacitor
R1, R3A, R3C, R3D, R3E
Pull-up resistor
R2, R2A, R2C, R2D, R2E
Pull-down resistor
R1A, R1C, R1D, R1E
In-line resistance of device output
S1, S2
Switches
© 2006 Microchip Technology Inc.
Installation and Operation
2.4
VOLTAGE SUPERVISOR SOT-23-5/6 EVALUATION BOARD DESCRIPTION
The Voltage Supervisor SOT-23-5/6 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 SOT-23-5/6 Evaluation Board can have connection posts
installed for the power (VDD) and ground (VSS) planes. The layout allows either
through-hole or 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.
2.4.2
Pads A1, A3, A4 and A5 (for Footprint Option A)
The Voltage Supervisor SOT-23-5/6 Evaluation Board can have a connection post
installed for the pads A1, A3, A4 and A5 signals. Depending on the device installed,
this could be an input, output or bidirectional I/O signal. The layout allows either a
through-hole connector or a surface mount connector.
For device evaluation, the use of an oscilloscope or Digital Voltmeter (DVM) is required.
The type of equipment used will determine the evaluation that may be performed.
© 2006 Microchip Technology Inc.
DS51527B-page 15
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
2.4.3
SOT-23-6 and SOT-23-5 Footprints
There are four SOT-23-6 and one SOT-23-5 pinout options that the Voltage Supervisor
SOT-23-5/6 Evaluation Board PCB supports. Figure 2-3 shows these four pinouts.
Figure 2-4 shows the single SOT-23-5 pinout option. Some devices may use different
nomenclature for the pin names, such as GND instead of VSS, VIN instead of VDD and
RESET (or RESET) or RST instead of VOUT.
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 SOT-23-5/6 Device
Compatibility” discusses other Microchip analog devices that may be used with this
PCB.
Option A
1
VSS
Option B
6
2
5
3
4
FIGURE 2-3:
VDD
VDD
Option C
1
6
2
5
3
4
VSS
Option E
VDD
1
6
VSS
2
5
3
4
VSS
1
6
2
5
3
4
VDD
SOT-23-6 (and SOT-23-5) Pinout Options.
Option D
1
FIGURE 2-4:
VDD
2
VSS
3
5
4
SOT-23-5 Pinout Option.
2.4.4
Passive Components (R1x, R2x, R3x, C5x, R1, R2, C1, C2, C3,
C4 and C6)
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 recommended
components that should be used when evaluating that device.
2.4.5
Switches (S1 and S2)
The footprints for these components are present to allow maximum flexibility in the use
of this PCB to evaluate a wide range of SOT-23-5 and SOT-23-6 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
recommended components that should be used when evaluating that device.
2.4.6
BFMP Interface (Header J1)
The Baseline Flash Microcontroller Programmer (BFMP) interface allows a
PIC10F2XX device that is populated in the SOT-23-6 version E footprint to be
programmed with programmers that support this interface, such as the BFMP
programmer (part number PG164101).
DS51527B-page 16
© 2006 Microchip Technology Inc.
Installation and Operation
2.5
VOLTAGE SUPERVISOR/VOLTAGE DETECTOR CIRCUITS
Currently, the voltage detectors/voltage supervisors use either footprint option A or
footprint option D.
2.5.1
Option D Circuit
Using the TC53C or TC54VC, no passive components would be required and the
device VOUT could be monitored on the D1 pad.
Using the TC53N or TC54VN, an external pull-up resistor is required. This resistor
would be installed in the R2A location and the device VOUT could be monitored on the
D1 pad.
The TC52 is a dual-channel voltage detector. This means that the device has a VOUT1
and a VOUT2 output. Both outputs are open-drain and require a pull-up resistor.
Locations R2A and R2E should be installed with 47 kΩ resistors.
Detect voltage 2 (VOUT2) is lower than detect voltage 1 (VOUT1). Therefore, VOUT1 is
typically used to indicate a low-power situation, with VOUT2 being used to reset the
system. Typically, a 0.1 µF capacitor would be on the VOUT2 pin (installed in the C5E
location).
Power supply filtering may be required, so a 0.1 µF capacitor is suggested in the C4
location.
VDD
C5F
A B C D E
6 2 1 2 5
TP1A
R2A
VSS
C5A
Option D
1
C4
2
3
U4
TP5A
4
R2E
R3E
TP 5
R1E
(WDI
VIN–)
A B C D E
5 5 5 5 6
TP3A
R2C
R3C
S1
R1C
TP4A
R2D
TP 3
(MR
VIN+)
C5D
R3D
A B C D E
3 3 3 — 3
Footprint Version
(A, B, C, D or E)
Pin Number of that
Footprint Version
(1, 2, 3, 4, 5 or 6)
FIGURE 2-5:
(VOUT
VIN+)
A B C D E
1 1 6 1 1
C5E
C5C
TP 1
R1A
5
TC5X
A B C D E
2 6 2 3 2
R3A
A B C D E
5 5 5 5 6
S2
R1D
TP 4
(WDI
VIN–)
A B C D E
4 4 4 4 4
Footprint Option/Pin Number
Combination (Pad D5)
Voltage Supervisor Circuit using Option D Footprint.
© 2006 Microchip Technology Inc.
DS51527B-page 17
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
2.5.2
Option A Circuit
The MCP13XX devices are only in the SOT-23-5 (5-pin) package, therefore option A
footprint pin 5 is not connected to the device. Once the device is released, please refer
to the data sheet to determine your desired circuit.
VDD
C5F
A B C D E
6 2 1 2 5
TP1A
VSS
R2A
A B C D E
2 6 2 3 2
R3A
C5A
(VOUT
VIN+)
1
2
3
MCP13XX
Option A
C1
A B C D E
1 1 6 1 1
6
5
U1
4
MCP13XX devices
do not use this pin.
TP5A
R2E
R3E
C5E
TP 5
R1E
(WDI
VIN–)
A B C D E
5 5 5 5 6
TP3A
R2C
C5C
TP 1
R1A
R3C
Footprint Version
(A, B, C, D or E)
Pin Number of that
Footprint Version
(1, 2, 3, 4, 5 or 6)
FIGURE 2-6:
DS51527B-page 18
TP4A
S1
R1C
R2D
TP 3
(MR
VIN+)
A B C D E
3 3 3 — 3
C5D
R3D
S2
R1D
TP 4
(WDI
VIN–)
A B C D E
4 4 4 4 4
A B C D E
3 3 3 — 3
Footprint Option/Pin Number
Combination (Pad A3)
Voltage Supervisor Circuit using Option A Footprint.
© 2006 Microchip Technology Inc.
Installation and Operation
2.5.3
A Circuit with the PIC10F200 and a Voltage Supervisor
(MCP13XX)
The PIC10F200 can be used to show the operation of the Watchdog Timer feature
(WDI) or the Manual Reset (MR) inputs that are available on some of the MCP13XX
devices.
Figure 2-7 shows the schematic to interface the appropriate MCP13XX device to the
PIC10F200 to exercise the Watch Dog Timer (WDI) and Manual Reset (MR)
functionality of the device.
After the release of the MCP13XX devices, please check the Microchip web site for an
application note or technical brief that will demonstrate one of the MCP13XX devices
using the Voltage Supervisor SOT-23-5/6 Evaluation Board.
VDD
C5F
A B C D E
6 2 1 2 5
TP1A
VSS
R2A
A B C D E
2 6 2 3 2
TP 1
R3A
C5A
R1A
(VOUT
VIN+)
C1
MCP13XX
Option A
1
2
3
U1
6
MCP13XX devices
do not use this pin.
5
A B C D E
1 1 6 1 1
TP4A
TP 4
4
(WDI
VIN–)
A B C D E
4 4 4 4 4
C6
GP0
1
2
BFMP Header (Top)
1
2
3
4
5
6
GP1
No Connect
3
R2E
GP3/MCLR
C5E
5
R3E
TP 5
R1E
GP2
(WDI
VIN–)
A B C D E
5 5 5 5 6
S1
R1C
TP 3 A B C D E
(MR
3 3 3 — 3
VIN+)
A B C D E
3 3 3 — 3
Pin Number of that
Footprint Version
(1, 2, 3, 4, 5 or 6)
FIGURE 2-7:
6
4
U5
Option E
TP3A (ICSPCLK)
TP3A
TP1A (ICSPDT)
R2C
VSS
VDD
R3C
TP5A (VPP)
C5C
Footprint Option
(A, B, C, D or E)
PIC10F200
TP5A
Footprint Option/Pin Number
Combination (Pad A3)
MCP13XX and a PIC10F200 Circuit.
© 2006 Microchip Technology Inc.
DS51527B-page 19
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
2.5.4
Evaluating a Voltage Supervisor or Voltage Detector Device
When evaluating a voltage supervisor/voltage detector device, a minimum set of test
equipment should be available. Table 2-4 shows the recommended test equipment.
TABLE 2-4:
TEST EQUIPMENT
Hardware
Connect to:
Comment
Variable Power
Supply
VDD, VSS
This allows the voltage to the SOT23 Evaluation Board
to be varied so the device output can be monitored.
Arbitrary
Waveform
Generator
VDD, VSS
This is like a variable power supply, but allows programmability 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).
Digital Multi-Meter
(D.M.M.)
VOUT (1)
Used to indicate the output state (low or high) of the
voltage supervisor/voltage detector.
Oscilloscope
VOUT (1)
Allows the device conditions and response to be
evaluated due to the ability to capture this information.
This is useful for faster signals and cases where small
spikes need to be detected.
Test Light (LED)
VOUT (1)
Used to visually indicate the output state (low or high) of
the voltage supervisor/voltage detector. Ensure that the
current requirements of this LED can be supplied by the
device’s output pin.
Note 1:
The pad connection to connect to the VOUT or RST pin will be dependent on the
device and the footprint option used.
A typical system that would be used to evaluate the voltage supervisor or voltage
detector device is shown in Figure 2-8. This also shows an example of input and output
waveforms for a voltage supervisor or voltage detector device.
SOT-23-5/6 Evaluation Board PCB
PCB
Pad
R2
Variable
Power
Supply
or
Arbitrary
Waveform
Generator
Voltage
Supervisor
or
Voltage
Detector
Oscilloscope
R1
C5
R3
Test Point
Arbitrary Waveform
Generator
Output
Test
Point or
VOUT
Device VDD out of valid operating range.
Output voltage may be indeterminate.
FIGURE 2-8:
DS51527B-page 20
Evaluation System.
© 2006 Microchip Technology Inc.
Installation and Operation
2.6
DIGITAL POTENTIOMETER CIRCUIT
The Voltage Supervisor SOT-23-5/6 Evaluation Board can be utilized to demonstrate
and test Microchip’s SOT-23-5 and SOT-23-6 nonvolatile digital potentiometers. This is
accomplished by populating the PCB with the desired MCP401X or MCP402X device,
a PIC10F2XX microcontroller, two momentary switches and a few resistors.
Note:
Microchip Technology Inc. offers a built-up evaluation board for the
MCP402X Digital Potentiometer (MCP402XEV). Additional information
regarding this evaluation board may be found on the CD-ROM directory:
CD-ROM:\00066 - MCP402X Digital Potentiometer Evaluation Board. Within this directory, you will find the user’s guide for this
evaluation board, the PIC10F200 program (firmware) and assembled HEX
file (00066_MCP402XEV.hex).
The code supplied for this evaluation board may be easily modified to demonstrate
operation of the Voltage Supervisor SOT-23-5/6 Evaluation Board.
Section 2.3 and Section 2.4 of the MCP401X/2X Digital Potentiometer Evaluation
Board User’s Guide (DS51546) discuss the MCP402XEV firmware. This firmware can
easily be modified to demonstrate using the Voltage Supervisor SOT-23-5/6 Evaluation
Board.
Figure 2-9 illustrates an example circuit. This circuit uses the MCP4023 and
PIC10F200 devices with all the components installed. The PCB silk-screen indicates
the VDD and VSS pads. The remaining PCB pads will be referred to by their footprint
option/pin number combination. These combinations are C3, C4, C5 and C6.
The PIC10F2XX will need to be programmed to make the system work. The
PIC10F2XX device can be programmed via the Baseline Flash Microcontroller
Programmer (BFMP) header (J1). The program (firmware) configures the GP1 and
GP2 pins to be outputs (driving high) and the GP0 and GP3 pins to be inputs. The GP1
and GP2 pins are individually polled to determine if either switch S1/D (down) and S2/U
(up) are depressed.
If the nonvolatile MCP402X device is used, the digital potentiometer setting can be
stored in nonvolatile memory, power can be cycled and the digital potentiometer will be
at the last saved setting for the volatile versions of the device. The wiper will go to its
default setting when power is cycled.
Note:
© 2006 Microchip Technology Inc.
The PIC10F2XX program (firmware) must take care in the timing requirements of the GP1 and GP2 pins, due to the multiplexing of the PIC10F2XX
GP1 pin with the MCP4023 U/D pin and Switch S1, and the multiplexing of
the PIC10F2XX GP2 pin with the MCP4023 CS pin and switch S2.
DS51527B-page 21
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
VDD
A B C D E
1 1 1 1 1
VSS
A B C D E
2 2 2 2 2
C5F
C6
1
2
3
PIC10F200
Option C
U5
Option E
6
1
5
MCP4023
A
V B
DD
6
R2A
0Ω
A
C3
4
2
3
VSS
W
U/D
CS
U3
W A B C D E
5 5 5 5 5
5
4
TP4A Cut Trace
S2
R1D Cut Trace
2.2 kΩ
TP3A Cut Trace
1
2
3
4
5
6
A B C D E
4 4 4 4 4
S1
R1C Cut Trace
2.2 kΩ
BFMP Header (Top)
A B C D E
6 6 6 6 6
A B C D E
3 3 3 3 3
No Connect
TP3A (ICSPCLK)
TP1A (ICSPDT)
VSS
VDD
TP5A (VPP)
FIGURE 2-9:
DS51527B-page 22
Footprint Option/Pin Number
Combination (Pad C3)
Footprint Option
(A, B, C, D or E)
Pin Number of that
Footprint Version
(1, 2, 3, 4, 5 or 6)
A B C D E
3 3 3 — 3
Circuit Utilizing the MCP4023 Digital Pot and the PIC10F200 Microcontroller.
© 2006 Microchip Technology Inc.
VOLTAGE SUPERVISOR SOT-23-5/6
EVALUATION BOARD USER’S GUIDE
Appendix A. Schematics and Layouts
A.1
INTRODUCTION
This appendix contains the schematics and layouts for the Voltage Supervisor
SOT-23-5/6 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 SOT-23-5/6 Evaluation
Board.
Figure A.4 shows the layout for the top layer of the Voltage Supervisor SOT-23-5/6
Evaluation Board. The layer order is shown in Figure A-1.
FIGURE A-1:
LAYER ORDER
Top Layer
Ground Layer
Power Layer
Bottom Layer
© 2006 Microchip Technology Inc.
DS51527B-page 25
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
SCHEMATIC
M
A.3
DS51527B-page 26
© 2006 Microchip Technology Inc.
Schematics and Layouts
A.4
BOARD LAYOUT – TOP LAYER, BOTTOM LAYER AND SILK SCREEN
© 2006 Microchip Technology Inc.
DS51527B-page 27
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
A.5
BOARD LAYOUT – TOP LAYER AND SILK-SCREEN
DS51527B-page 28
© 2006 Microchip Technology Inc.
Schematics and Layouts
A.6
BOARD LAYOUT – BOTTOM LAYER
© 2006 Microchip Technology Inc.
DS51527B-page 29
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
A.7
BOARD LAYOUT – GROUND PLANE
DS51527B-page 30
© 2006 Microchip Technology Inc.
Schematics and Layouts
A.8
BOARD LAYOUT – POWER LAYER
© 2006 Microchip Technology Inc.
DS51527B-page 31
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
A.9
BOARD LAYOUT – TOP COMPONENTS AND SILK SCREEN
DS51527B-page 32
© 2006 Microchip Technology Inc.
VOLTAGE SUPERVISOR SOT-23-5/6
EVALUATION BOARD USER’S GUIDE
Appendix B. Bill Of Materials (BOM)
TABLE B-1:
Qty
1
BILL OF MATERIALS
Reference
Description
Manufacturer
Part Number
PCB 103-00050
Voltage Supervisor SOT-23-5/6 Evaluation
Microchip
103-00050
Board PCB
Technology Inc.
0
U1, U2, U3, U5
SOT-23-6 Device
Microchip
User-specified
(Only one of U1 - U5 installed per board)
Technology Inc.
0
U4
SOT-23-5 Device
Microchip
User-specified
(Only one of U1 - U5 installed per board)
Technology Inc.
0
C1, C2, C3, C4, C6 Device Power Supply Bypass Capacitor
—
User-specified
Surface-mount (805 package)
(Optional - Application-dependent)
0
C5F
Power Supply Bypass Capacitor
—
User-specified
Surface-mount (805 package)
(Optional - Application-dependent)
—
User-specified
0
C5A, C5C, C5D,
Output Filer Capacitor
C5E
Surface-mount (805 package)
(Optional - Application-dependent)
0
R2A, R2C, R2D,
Output Pull-up resistor
—
User-specified
R2E
Surface-mount (805 package)
(Optional - Application-dependent)
0
R3A, R3C, R3D,
Output Pull-down resistor
—
User-specified
R3E
Surface-mount (805 package)
(Optional - Application-dependent)
0
R1A, R1C, R1D,
Output inline resistor
—
User-specified
R1E
Surface-mount (805 package)
(Optional - Application-dependent)
—
—
0
R1
BFMP Header pin 1 pull up resistor (2)
—
—
0
R2
BFMP Header pin 1 pull down resistor (2)
0
J1
BFMP Header (6-pin, 100 mil spacing)
—
—
5012
0
TP1A, TP3A, TP4A, Through-hole Test Point connector
Keystone
TP5A, H1TP
Electronics®
Through-hole Switch (3)
Panasonic®
EVQ-ATA048
0
S1, S2 (3)
0
S1, S2
Surface-mount Switch
Panasonic
EVQ-PJ504K
VDD, VSS and the other PCB Pads (A1 (1), A3 (1),
Keystone
5012
0
VDD, VSS, A1 (1),
(1), A4 (1), A5 (1)
Electronics®
A3
A4 (1), A5 (1)) through-hole connector
VDD, VSS and the other PCB Pads (A1 (1), A3 (1),
Keystone
5016
0
VDD, VSS, A1 (1),
(1), A4 (1), A5 (1)
Electronics®
A3
A4 (1), A5 (1)) surface-mount connector
Note 1: This reference is a description of the silk screen name “A B C D E” that matches the footprint version
option to the package pin number (“1 2 3 4 5 6”).
For example, A1 means footprint version option A, package pin number 1.
2: The current BFMP programming specifications has pin 1 (J1-1) unconnected. These footprints are to
support possible future functionality enhancements.
3: Revision 1 of the PCB has through-holes that are too small to support this switch. For Revision 1 boards,
please use surface-mount switches.
© 2006 Microchip Technology Inc.
DS51527B-page 33
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
NOTES:
DS51527B-page 34
© 2006 Microchip Technology Inc.
VOLTAGE SUPERVISOR SOT-23-5/6
EVALUATION BOARD USER’S GUIDE
Appendix C. Microchip SOT-23-5/6 Device Compatibility
C.1
INTRODUCTION
This appendix documents other Microchip analog devices that can be evaluated using
the Voltage Supervisor SOT-23-5/6 Evaluation Board. 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-23-5
(5-pin SOT-23) or SOT-23-6 (6-pin SOT-23) packaged device.
C.2
PCB COMPATIBILITY
There are four SOT-23-6 (6-pin SOT-23) pinouts that the Voltage Supervisor
SOT-23-5/6 Evaluation Board PCB supports. Figure C-1 shows these four pinouts.
There is an additional SOT-23-5 (5-pin SOT-23) pinout that the Voltage Supervisor
SOT-23-5/6 Evaluation Board PCB supports. Figure C-2 shows this pinout. Other
Microchip analog devices may be used with this PCB if the power and ground pins
match these available 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 on the
application circuit.
Option A
VSS
Option B
1
6
5
VDD 2
5
4
3
4
1
6
2
3
FIGURE C-1:
VDD
Option C
VSS
Option E
VDD 1
6
VSS
2
5
3
4
VSS
1
6
2
5
3
4
VDD
SOT-23-6 (and SOT-23-5) Pinout Options.
Option D
1
5
VDD 2
VSS 3
FIGURE C-2:
4
SOT-23-5 Pinout Option.
© 2006 Microchip Technology Inc.
DS51527B-page 35
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
TABLE C-1:
MICROCHIP ANALOG AND PIC®MICRO DEVICES AND SOT-23-5/6 EVALUATION
BOARD CIRCUIT/FOOTPRINT OPTION SELECTION
Device Family
Digital Potentiometers
(Digi-Pots) – Volatile
Digital Potentiometers
(Digi-Pots) – Nonvolatile
Operational Amplifiers
(Op Amps)
DS51527B-page 36
Option
Supported
On
# of
Pins
Comment
Recommended Component Values:
MCP4012
C
6
MCP4013
C
6
MCP4014
C
5
MCP4022
C
6
MCP4023
C
6
MCP4024
C
5
MCP601
A
5
MCP601R
B
5
MCP603
A
6
MCP606
A
5
MCP6001
A
5
MCP6001R
B
5
MCP6001U
A
5
MCP6231
A
5
MCP6231R
B
5
MCP6231U
A
5
MCP6241
A
5
MCP6241R
B
5
MCP6241U
A
5
TC1034
B
5
TC1035
B
6
See Device Data Sheet (DS21978) for
recommended components
See Device Data Sheet (DS21978) for
recommended components
See Device Data Sheet (DS21978) for
recommended components
See Device Data Sheet (DS21916) for
recommended components
See Device Data Sheet (DS21916) for
recommended components
See Device Data Sheet (DS21916) for
recommended components
See Device Data Sheet (DS21314) for
recommended components
See Device Data Sheet (DS21314) for
recommended components
See Device Data Sheet (DS21314) for
recommended components
See Device Data Sheet (DS11177) for
recommended components
See Device Data Sheet (DS21733) for
recommended components
See Device Data Sheet (DS21733) for
recommended components
See Device Data Sheet (DS21733) for
recommended components
See Device Data Sheet (DS21881) for
recommended components
See Device Data Sheet (DS21881) for
recommended components
See Device Data Sheet (DS21881) for
recommended components
See Device Data Sheet (DS21882) for
recommended components
See Device Data Sheet (DS21882) for
recommended components
See Device Data Sheet (DS21882) for
recommended components
See Device Data Sheet (DS21343) for
recommended components
See Device Data Sheet (DS21343) for
recommended components
Device
© 2006 Microchip Technology Inc.
Microchip SOT-23-5/6 Device Compatibility
TABLE C-1:
MICROCHIP ANALOG AND PIC®MICRO DEVICES AND SOT-23-5/6 EVALUATION
BOARD CIRCUIT/FOOTPRINT OPTION SELECTION (CONTINUED)
Option
Supported
On
# of
Pins
Comment
Recommended Component Values:
MCP6541
A
5
MCP6541R
B
5
MCP6546
A
5
MCP6546R
B
5
TC1037
A
5
TC1038
A
6
TC1039
A
6
MCP9800
C
5
MCP9802
C
5
TC77
MCP3221
A
C
5
5
See Device Data Sheet (DS21696) for
recommended components
See Device Data Sheet (DS21696) for
recommended components
See Device Data Sheet (DS21714) for
recommended components
See Device Data Sheet (DS21714) for
recommended components
See Device Data Sheet (DS21344) for
recommended components
See Device Data Sheet (DS21344) for
recommended components
See Device Data Sheet (DS21344) for
recommended components
C3 = 0.1 µF
R2C = 10 kΩ
R2D = 10 kΩ
R2A = 10 kΩ
C3 = 0.1 µF
R2C = 10 kΩ
R2D = 10 kΩ
R2A = 10 kΩ
C1 = 0.1 µF
See Device Data Sheet (DS21732) for
recommended components
Device Family
Comparators
Thermal Sensors
A/D Converter (ADC)
Device
© 2006 Microchip Technology Inc.
DS51527B-page 37
Voltage Supervisor SOT-23-5/6 Evaluation Board User’s Guide
TABLE C-1:
MICROCHIP ANALOG AND PIC®MICRO DEVICES AND SOT-23-5/6 EVALUATION
BOARD CIRCUIT/FOOTPRINT OPTION SELECTION (CONTINUED)
Device Family
Low Drop-Out
Regulators (LDOs)
PICmicro®
Microcontrollers
PFM/PWM Step-Down
DC/DC Controller
Battery Charger
Controller
DS51527B-page 38
Option
Supported
On
# of
Pins
TC1014
C
5
TC1015
C
5
TC1017
C
5
TC1054
C
5
TC1055
C
5
TC1070
C
5
TC1071
C
5
TC1185
C
5
TC1186
C
5
TC1187
C
5
TC1223
C
5
TC1224
C
5
TC2014
C
5
TC2015
C
5
TC2054
C
5
TC2055
C
5
TC2185
C
5
TC2186
C
5
PIC10F200
PIC10F202
PIC10F204
PIC10F206
TC105
E
E
E
E
D
6
6
6
6
5
MCP73826
E
6
Device
Comment
Recommended Component Values:
C3 = 1 µF
C5A = 1 µF
C5D = 470 pF
Pad C3 (schematic TP3) connected to pad
VDD
See Device Data Sheet (DS21335) for
recommended components
See Device Data Sheet (DS21813) for
recommended components
See Device Data Sheet (DS21350) for
recommended components
See Device Data Sheet (DS21350) for
recommended components
See Device Data Sheet (DS21353) for
recommended components
See Device Data Sheet (DS21353) for
recommended components
See Device Data Sheet (DS21350) for
recommended components
See Device Data Sheet (DS21353) for
recommended components
See Device Data Sheet (DS21368) for
recommended components
See Device Data Sheet (DS21368) for
recommended components
See Device Data Sheet (DS21368) or
recommended components
See Device Data Sheet (DS21662) for
recommended components
See Device Data Sheet(DS21662) for
recommended components
See Device Data Sheet (DS21663) for
recommended components
See Device Data Sheet (DS21663) for
recommended components
See Device Data Sheet (DS21662) for
recommended components
See Device Data Sheet (DS21663) for
recommended components
C6 = 1 µF
C6 = 1 µF
C6 = 1 µF
C6 = 1 µF
See Device Data Sheet (DS21349) for
recommended components
See Device Data Sheet (DS21705) for
recommended components
© 2006 Microchip Technology Inc.
Microchip SOT-23-5/6 Device Compatibility
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-3 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 CL will depend on the LDO used and the load of the circuit.
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 (CL) becomes possible (for the same system
performance).
SOT-23 Evaluation Board PCB
Power
Supply
R3
LDO
C2
CL
From Function
Generator
Test Point
Function
Generator
Output
Test
Point
FIGURE C-3:
© 2006 Microchip Technology Inc.
LDO Evaluation System.
DS51527B-page 39
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02/16/06
DS51527B-page 40
© 2006 Microchip Technology Inc.