TO220-3/TO263-3 Voltage Regulator Evaluation Board User’s Guide © 2009 Microchip Technology Inc.
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TO220-3/TO263-3 VOLTAGE REGULATOR EVALUATION BOARD USER’S GUIDE Table of Contents Preface ........................................................................................................................... 1 Introduction............................................................................................................ 1 Document Layout .................................................................................................. 1 Conventions Used in this Guide ........................
TO220-3/TO263-3 Voltage Regulator Evaluation Board User’s Guide NOTES: DS51818A-page iv © 2009 Microchip Technology Inc.
TO220-3/TO263-3 VOLTAGE REGULATOR 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.
TO220-3/TO263-3 Voltage Regulator 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 Referenced books Emphasized text A window A dialog A menu selection A field name in a window or dialog A menu path MPLAB® IDE User’s Guide ...is the only compiler...
Preface RECOMMENDED READING This user's guide describes how to use TO220-3/TO263-3 Voltage Regulator Evaluation Board. Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources.
TO220-3/TO263-3 Voltage Regulator Evaluation Board User’s Guide NOTES: DS51818A-page 4 © 2009 Microchip Technology Inc.
TO220-3/TO263-3 VOLTAGE REGULATOR EVALUATION BOARD USER’S GUIDE Chapter 1. Product Overview 1.1 INTRODUCTION The TO220-3 / TO263-3 Voltage Regulator Evaluation Board is designed to provide functional evaluation of Microchip Voltage Regulators that utilize the TO220-3 and TO263-3 package and the following device pinouts: Pin Number U1 footprint Pin 1 VIN Pin 2 GND Pin 3 VOUT The TO220-3 / TO263-3 Voltage Regulator Evaluation Board does not come with a voltage regulator soldered onto the board.
TO220-3/TO263-3 Voltage Regulator Evaluation Board User’s Guide 1.2.4 Load Resistor R5 may be populated with the desired load resistor value for the device being evaluated. JP4 connects R5 to the device output. R6 may also be populated with a load resistor. JP5 connects R6 to the device output. 1.2.5 Output Capacitor C2 may be populated with the desired surface mount output capacitance. By default, C2 is populated with a 1 µF, 6.3V, XR7 ceramic capacitor.
TO220-3/TO263-3 VOLTAGE REGULATOR EVALUATION BOARD USER’S GUIDE Chapter 2. Installation and Operation 2.1 INTRODUCTION The TO220-3/TO263-3 Voltage Regulator Evaluation Board is designed to be used to facilitate evaluation of Microchip’s voltage regulators or to be used as a stand-alone voltage regulator board. Jumpers have been placed on the board to facilitate testing of specific voltage regulator parameters.
TO220-3/TO263-3 Voltage Regulator Evaluation Board User’s Guide 8. Read the Ground Current directly from the ammeter connected to testpoints TP6 and TP7. 9. Vary the input voltage to obtain data for ground current versus input voltage. With no load attached to the output of the voltage regulator, the measured ground current is also called the quiescent current of the regulator. 10. Add a load selection jumper, JP4 or JP5. 11.
TO220-3/TO263-3 VOLTAGE REGULATOR EVALUATION BOARD USER’S GUIDE Appendix A. Schematic and Layouts A.1 INTRODUCTION This appendix contains the following schematis and layouts for the TO220-3/TO263-3 Voltage Regulator Evaluation Board: • • • • Board - Schematic Board - Top Silk Board - Top Copper Board - Bottom Copper © 2009 Microchip Technology Inc.
TO220-3/TO263-3 Voltage Regulator Evaluation Board User’s Guide REV Revision Notes Initial Release Date BOARD - SCHEMATIC 05-DEC-2007 A.2 DS51818A-page 10 © 2009 Microchip Technology Inc.
Schematic and Layouts A.3 BOARD - TOP SILK © 2009 Microchip Technology Inc.
TO220-3/TO263-3 Voltage Regulator Evaluation Board User’s Guide A.4 BOARD - TOP COPPER DS51818A-page 12 © 2009 Microchip Technology Inc.
Schematic and Layouts A.5 BOARD - BOTTOM COPPER © 2009 Microchip Technology Inc.
TO220-3/TO263-3 Voltage Regulator Evaluation Board User’s Guide NOTES: DS51818A-page 14 © 2009 Microchip Technology Inc.
TO220-3/TO263-3 VOLTAGE REGULATOR EVALUATION BOARD USER’S GUIDE Appendix B. Bill of Materials (BOM) TABLE B-1: Qty BILL OF MATERIALS (BOM) Reference Description Manufacturer Part Number 1 C1 CAP CERAMIC 1.0 uF 50V X7R 0805 Murata Electronics® GRM21BR71H105KA12L 1 C2 CAP CERAMIC 1.0 uF 16V X7R 0805 Kemet® Electronics C0805C105K4RACTU 1 C3 DO NOT POPULATE — 1 J1 2 pin RA header, 0.100 centers, 3M 0.025 sq pins, 0.
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