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 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in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates.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. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KEELOQ, 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, 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® 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. 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