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SOT23-5

Voltage Regulator

Evaluation Board

User’s Guide

Summary of content (24 pages)

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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.
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SOT23-5 VOLTAGE REGULATOR EVALUATION BOARD USER’S GUIDE Table of Contents Preface ........................................................................................................................... 1 Introduction............................................................................................................ 1 Document Layout .................................................................................................. 1 Conventions Used in this Guide .................................
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SOT23-5 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.
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SOT23-5 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...
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Preface RECOMMENDED READING This user's guide describes how to use SOT23-5 Voltage Regulator Evaluation Board. Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources.
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SOT23-5 VOLTAGE REGULATOR EVALUATION BOARD USER’S GUIDE Chapter 1. Product Overview 1.
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SOT23-5 Voltage Regulator Evaluation Board User’s Guide 1.2.2 Input Capacitance Jumper JP1 connects the input capacitance to the circuit. The input capacitor is disconnected when performing Power Supply Ripple Rejection tests. By default, C1 is populated with a 1 µF, 50V, XR7 ceramic capacitor. 1.2.3 Shutdown Control Jumper JP2 allows the user to select the Shutdown (SHDN) pin voltage level. The voltage level may be set to VIN, GND or open, depending on the placement of the JP2 jumper.
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Product Overview 1.3 WHAT THE SOT23-5 VOLTAGE REGULATOR EVALUATION BOARD KIT INCLUDES? This SOT23-5 Voltage Regulator Evaluation Board kit includes: • One SOT23-5 Voltage Regulator Evaluation Board -102-00201 • Important Information "Read First" © 2009 Microchip Technology Inc.
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SOT23-5 VOLTAGE REGULATOR EVALUATION BOARD USER’S GUIDE Chapter 2. Installation and Operation 2.1 INTRODUCTION The SOT23-5 Voltage Regulator Evaluation Board is designed to be used to facilitate the evaluation of Microchip’s voltage regulators, or to be used as a standalone voltage regulator board. Jumpers have been placed on the board to facilitate testing of specific voltage regulator parameters. The jumpers may also be used to select pull-up and pulldown voltage levels.
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SOT23-5 Voltage Regulator Evaluation Board User’s Guide 2.3 GETTING STARTED The SOT23-5 Voltage Regulator Evaluation Board is fully assembled and tested. All that is required for operating is a user supplied voltage regulator and a supply voltage source. Some of the tests that may be completed using the SOT23-5 Voltage Regulator Evaluation Board shall now be described. 2.3.1 Ground Current and Quiescent Current When measuring ground current, jumper JP3 should be removed, otherwise leave jumper JP3 on.
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Installation and Operation 2.3.4 Power Good (PWRGD) The Power Good (PWRGD) output pin has the ability to be pulled up to either SHDN or VOUT. Populating R2 (and removing R4) with the desired pull-up resistor causes PWRGD to be pulled up to VOUT. Populating R4 (and removing R2) with the desired pull-up resistor causes PWRGD to be pulled up to VIN. When PWRGD is pulled up to VOUT, the device current will be minimal when SHDN is active.
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SOT23-5 VOLTAGE REGULATOR EVALUATION BOARD USER’S GUIDE Appendix A. Schematic and Layouts A.1 INTRODUCTION This appendix contains the following schematics and layouts for the SOT23-5 Voltage Regulator Evaluation Board: • • • • Board - Schematic Board - Top Silk and Pads Board - Top Copper Board - Bottom Copper © 2009 Microchip Technology Inc.
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Input Voltage ( 0V to 50V) DS51811A-page 14 Bypass Pwrgd/Error Revision Notes Initial Release Gnd Vout Output Voltage ( 0V to 6.0V ) Date 18-FEB-2008 A.2 Adj Adj 3.3V OUT REV 1 SOT23-5 Voltage Regulator Evaluation Board User’s Guide BOARD - SCHEMATIC © 2009 Microchip Technology Inc.
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SOT23-5 Voltage Regulator Evaluation Board User’s Guide A.4 BOARD - TOP COPPER DS51811A-page 16 © 2009 Microchip Technology Inc.
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SOT23-5 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 Corp C0805C105K4RACTU 1 C3 DO NOT POPULATE — — 1 J1 2 pin RA header, 0.100 centers, 0.025 sq pins, 0.
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