TO220-5 / TO263-5
Voltage Regulator
Evaluation Board
User’s Guide
© 2009 Microchip Technology Inc.
DS51817A
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Trademarks
The Microchip name and logo, the Microchip logo, Accuron,
dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,
PICSTART, rfPIC, SmartShunt and UNI/O are registered
trademarks of Microchip Technology Incorporated in the
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SEEVAL, SmartSensor and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
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dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, In-Circuit Serial
Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, nanoWatt XLP,
PICkit, PICDEM, PICDEM.net, PICtail, PIC32 logo, PowerCal,
PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select
Mode, Total Endurance, TSHARC, WiperLock and ZENA are
trademarks of Microchip Technology Incorporated in the
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SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
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© 2009, 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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are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
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analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS51817A-page ii
© 2009 Microchip Technology Inc.
TO220-5 / TO263-5 VOLTAGE
REGULATOR EVALUATION
BOARD USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 7
Introduction............................................................................................................ 7
Document Layout .................................................................................................. 7
Conventions Used in this Guide ............................................................................ 8
Recommended Reading........................................................................................ 9
The Microchip Web Site ........................................................................................ 9
Customer Support ................................................................................................. 9
Document Revision History ................................................................................... 9
Chapter 1. Product Overview
1.1 Introduction ................................................................................................... 11
1.2 What is the TO220-5 / TO263-5 Voltage Regulator Evaluation Board? ....... 11
1.3 What the TO220-5 / TO263-5 Voltage Regulator Evaluation Board
kit includes. ............................................................................................. 12
Chapter 2. Installation and Operation
2.1 Introduction ................................................................................................... 13
2.2 Features ....................................................................................................... 13
2.3 Getting Started ............................................................................................. 13
Appendix A. Schematic and Layouts
A.1 Introduction .................................................................................................. 15
A.2 Board - Schematic ....................................................................................... 16
A.3 Board - Top Silkscreen ................................................................................ 17
A.4 Board - Top Solder ....................................................................................... 18
A.5 Board - Bottom Solder ................................................................................. 19
Appendix B. Bill Of Materials (BOM)
Worldwide Sales and Service .................................................................................... 22
© 2009 Microchip Technology Inc.
DS51817A-page iii
TO220-5 / TO263-5 Voltage Regulator Evaluation Board User’s Guide
NOTES:
DS51817A-page iv
© 2009 Microchip Technology Inc.
TO220-5 / TO263-5 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. 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
TO220-5 / TO263-5 Voltage Regulator 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 TO220-5 / TO263-5 Voltage Regulator
Evaluation Board. The manual layout is as follows:
• Chapter 1. “Product Overview” - Important information about the
TO220-5 / TO263-5 Voltage Regulator Evaluation Board.
• Chapter 2. “Installation and Operation” – Includes instructions on how to get
started with this user’s guide and a description of the user’s guide.
• Appendix A. “Schematic and Layouts” – Shows the schematic and board
layouts for the TO220-5 / TO263-5 Voltage Regulator Evaluation Board.
• Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the
sub-assemblies in the TO220-5 / TO263-5 Voltage Regulator Evaluation Board.
© 2009 Microchip Technology Inc.
DS51817A-page 1
TO220-5 / TO263-5 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...
the Output window
the Settings dialog
select Enable Programmer
“Save project before build”
A dialog button
A tab
A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
A key on the keyboard
Click OK
Click the Power tab
4‘b0010, 2‘hF1
Italic Courier New
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
Constants
A variable argument
Square brackets [ ]
Optional arguments
Curly brackets and pipe
character: { | }
Ellipses...
Choice of mutually exclusive
arguments; an OR selection
Replaces repeated text
#define START
autoexec.bat
c:\mcc18\h
_asm, _endasm, static
-Opa+, -Opa0, 1
0xFF, ‘A’
file.o, where file can be
any valid filename
mcc18 [options] file
[options]
errorlevel {0|1}
Initial caps
Quotes
Underlined, italic text with
right angle bracket
Bold characters
N‘Rnnnn
Text in angle brackets < >
Courier New font:
Plain Courier New
Represents code supplied by
user
DS51817A-page 2
Examples
File>Save
Press <Enter>, <F1>
var_name [,
var_name...]
void main (void)
{ ...
}
© 2009 Microchip Technology Inc.
Preface
RECOMMENDED READING
This user's guide describes how to use TO220-5 / TO263-5 Voltage Regulator
Evaluation Board. Other useful documents are listed below. The following Microchip
documents are available and recommended as supplemental reference resources.
MCP1790 Datasheet, “70 mA, High Voltage Regulator”, DS-22075
MCP1825 Datasheet, “500 mA, Low Voltage, Low Quiescent Current LDO
Regulator”, DS-22056
MCP1826 Datasheet, “1000 mA, Low Voltage, Low Quiescent Current LDO
Regulator”, DS-22057
MCP1827 Datasheet, “1.5A, Low Voltage, Low Quiescent Current LDO
Regulator”, DS-22001
These datasheets provide useful information regarding voltage regulator parameters
that may be validated using this evaluation board.
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
(FAE) 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 A (April 2009)
• Initial Release of this Document.
© 2009 Microchip Technology Inc.
DS51817A-page 3
TO220-5 / TO263-5 Voltage Regulator Evaluation Board User’s Guide
NOTES:
DS51817A-page 4
© 2009 Microchip Technology Inc.
TO220-5 / TO263-5 VOLTAGE
REGULATOR EVALUATION
BOARD USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
The TO220-5 / TO263-5 Voltage Regulator Evaluation Board is designed to provide
functional evaluation of Microchip Voltage Regulators that utilize the TO220-5 and
TO263-5 package and the following device pinouts:
Pin Number
Pin 1
U1 footprint
SHDN
Pin 2
VIN
Pin 3
GND
Pin 4
VOUT
Pin 5
PWRGD/ADJ
The TO220-5 / TO263-5 Voltage Regulator Evaluation Board does not come with a
voltage regulator soldered onto the board. This allows the user to attach the voltage
regulator of their choosing to the board and perform quiescent current, ground current,
PSRR, and other desired tests.
The TO220-5 / TO263-5 Voltage Regulator Evaluation Board is based upon a modulare
concept which will allow the user to plug in additional boards to increase the test
capability of the voltage regulator. Planned additional modulare plugin boards currently
consist of an Input Voltage Linestep Board, Output Voltage Loadstep Board, and
several other device packages.
1.2
WHAT IS THE TO220-5 / TO263-5 VOLTAGE REGULATOR EVALUATION
BOARD?
The TO220-5 / TO263-5 Voltage Regulator Evaluation Board is designed to evaluate
and test voltage regulators. By soldering the desired device to the evaluation board, the
user can easily validate several parameters of the device.
1.2.1
Functional Blocks
The TO220-5 / TO263-5 Voltage Regulator Evaluation Board can be broken up into 6
functional blocks. The blocks are:
•
•
•
•
•
•
Input Capacitance
Shutdown Control
Ground Current Measurement
Voltage Adjust
Power Good
Load Resistor
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.
© 2009 Microchip Technology Inc.
DS51817A-page 5
TO220-5 / TO263-5 Voltage Regulator Evaluation Board User’s Guide
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. When the jumper is not connecting pins 1 and 2 or pins 2 and 3 of JP2, the
voltage level may be set by attaching an external signal to TP5. This allows the user to
enable, disable, or pulse the shutdown pin of the device.
The board comes with R1 populated with a 10 kΩ resistor.
1.2.4
Ground Current Measurement
Jumper JP3 allows measurement of ground current. When a current meter is
connected to TP6 and TP7 and jumper JP3 is removed, the ground current of the
device may be measured.
1.2.5
Voltage Adjust
For Adjustable Output Voltage devices, R2 and R3 may be populated with appropriate
values to provide the desired output voltage.
The board comes with R2 populated with a 69.8 kΩ resistor.
1.2.6
Power Good (PWRGD)
For devices with a Power Good (PWRGD) output, either R2 or R4 is populated
depending on the desired pullup source voltage.
R2 selects VOUT as the pullup source voltage.
R4 selects VIN as the pullup source voltage.
The board comes with R2 populated with a 69.8 kΩ resistor.
1.2.7
Load Resistor
R5 and R6 may be populated with the desired load resistor values for the device being
evaluated. Jumper JP4 connects R5 to the device output. Jumper JP5 connects R6 to
the device output.
1.2.8
Output Capacitor
C2 may be populated with the desired output capacitance. By default, C2 is populated
with a 1 µF, 6.3V, XR7 ceramic capacitor.
1.2.9
Power Supply
J1 or TP1 and TP2 are connected to the user’s power supply.
1.3
WHAT THE TO220-5 / TO263-5 VOLTAGE REGULATOR EVALUATION
BOARD KIT INCLUDES.
This TO220-5 / TO263-5 Voltage Regulator Evaluation Board kit includes:
• TO220-5 / TO263-5 Voltage Regulator Evaluation Board (102-00203, Qty 2)
• Important Information “Read First”
DS51817A-page 6
© 2009 Microchip Technology Inc.
TO220-5 / TO263-5 VOLTAGE
REGULATOR EVALUATION
BOARD USER’S GUIDE
Chapter 2. Installation and Operation
2.1
INTRODUCTION
The TO220-5 / TO263-5 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 TO220-5 / TO263-5 Voltage Regulator Evaluation Board kit comes with a 1 µF
ceramic input and output capacitor soldered to the board. The board has two
unpopulated resistor locations that may be used for loads.
2.2
FEATURES
The TO220-5 / TO263-5 Voltage Regulator Evaluation Board has the following
features:
• Input and Output headers for future connection to Line Step and Load Step
modules
• Ample testpoints to attach multimeters, power supplies, and loads
• Jumper to select ground current measurement
• Jumpers to connect output load resistors
• Jumper to connect input capacitor to circuit
2.3
GETTING STARTED
The TO220-5 / TO263-5 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 TO220-5 /
TO263-5 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. To measure ground current, perform the following steps:
1. Add desired load resistors to R5 and R6.
2. Remove jumpers JP3, JP4, and JP5.
3. Connect an Ampere Meter across testpoints TP6(+) and TP7(-). Select the
appropriate meter scale for the device being evaluated.
4. Connect a voltmeter across testpoints TP9(+) and TP10(-).
5. Add jumper JP1.
6. Apply source voltage to testpoints TP1(+) and TP2(-).
7. Verify the voltage across testpoints TP9 and TP10 is within the expected range
of the device being tested.
8. Read the Ground Current directly from the ampere meter connected to testpoints
TP6 and TP7.
© 2009 Microchip Technology Inc.
DS51817A-page 7
TO220-5 / TO263-5 Voltage Regulator Evaluation Board User’s Guide
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. Read the Ground Current directly from the ampere meter connected to testpoints
TP6 and TP7.
12. The data collected will be the ground current versus load current.
2.3.2
Load Resistance
R5 and R6 are used to set desired load values. One choice is to set R5 to the minimum
current desired for testing. R6 would then be set to a value desired for specific tests.
Either value may be selected by adding their respective jumpers.
2.3.3
Line Step
Dynamic Line Step response may be evaluated by connecting an electronically
switched input voltage to testpoints TP1(+) and TP2(-) or to connector J1. An
oscilloscope is connected to TP3(Ch1 Trigger), TP9(Ch2) and TP10(Gnd). An
appropriate load is selected using R5 and JP4 or R6 and JP5. The input voltage is then
electronically switched from a low voltage to a high voltage. The corresponding voltage
waveform data of the voltage regulator response is captured by the oscilloscope.
Microchip will be offering a Line Step module that connects directly to connector J1.
The Line Step module will be capable of switching between two voltage levels that the
user supplies.
2.3.4
Load Step
Dynamic Load Step response may be evaluated by connecting an electronically
switched load to testpoints TP9(+) and TP10(-) or to connector P1. An oscilloscope is
connected to the electronic load switch signal (Ch1 Trigger) and to TP9(Ch2) and
TP10(Gnd). The load is then electronically switched from a high resistance to a low
resistance. The corresponding voltage waveform data of the voltage regulator
response is captured by the oscilloscope. Microchip will be offering a Load Step module
that connects directly to connector P1. The Load Step module will have several
selectable load values populated onboard to cover a wide range of loads. The load will
have the ability to be electronically or manually switched.
2.3.5
Power Supply Rejection Ratio (PSRR)
Power Supply Rejection Ratio tests are performed by removing the input capacitor
jumper, JP1, and connecting an appropriate PSRR analyzer to the TO220-5 / TO263-5
Voltage Regulator Evaluation Board. The PSRR analyzer may then sweep the input
voltage frequencies and record the corresponding output voltages.
DS51817A-page 8
© 2009 Microchip Technology Inc.
TO220-5 / TO263-5 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
TO220-5 / TO263-5 Voltage Regulator Evaluation Board:
•
•
•
•
Board - Schematic
Board - Top Silk-Screen
Board - Top Solder
Board - Bottom Solder
© 2009 Microchip Technology Inc.
DS51817A-page 9
TO220-5 / TO263-5 Voltage Regulator Evaluation Board User’s Guide
Initial Release
Date
Revision Notes
REV
14-FEB-2008
BOARD - SCHEMATIC
1
A.2
DS51817A-page 10
© 2009 Microchip Technology Inc.
Schematic and Layouts
A.3
BOARD - TOP SILK-SCREEN
© 2009 Microchip Technology Inc.
DS51817A-page 11
TO220-5 / TO263-5 Voltage Regulator Evaluation Board User’s Guide
A.4
BOARD - TOP SOLDER
DS51817A-page 12
© 2009 Microchip Technology Inc.
Schematic and Layouts
A.5
BOARD - BOTTOM SOLDER
© 2009 Microchip Technology Inc.
DS51817A-page 13
TO220-5 / TO263-5 Voltage Regulator Evaluation Board User’s Guide
NOTES:
DS51817A-page 14
© 2009 Microchip Technology Inc.
TO220-5 / TO263-5 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
Capacitor, Ceramic, 1 µF, 50V, X7R, SMT 0805
Murata
Electronics®
GRM21BR71H105KA12L
1
C2
Capacitor, Ceramic, 1 µF, 16V, X7R, SMT 0805
Kemet®
Electronics
C0805C105K4RACTU
4
Each Corner Bumpon Hemisphere 0.44 x 0.20 Clear
3M
SJ-5303 (Clear)
1
J1
2 pin RA header, 0.100 centers, 0.025 sq pins,
0.070 pcb to pin center height, 36 pins to a strip
(yields 18 headers)
3M
929835-01-36-RK
5
JP1, JP2,
JP3, JP4,
JP5
Connector, Shorting jumper, Tin, 0.100”
Sullins
STC02SYAN
4
JP1, JP3,
JP4, JP5
2 pin header, 0.100 centers, 0.025 sq pins, 0.070 Molex®
pcb to pin center height, 36 pins to a strip (yields Electronics
18 headers)
22-28-4360
1
JP2
3 pin header, 0.100 centers, 0.025 sq pins, 0.070 Molex®
pcb to pin center height, 36 pins to a strip (yields Electronics
12 headers)
22-28-4360
1
P1
RA socket, 0.100 centers, 0.025 sq pins, 0.070
pcb to pin center height
Sullins
PPPC021LGBN-RC
1
PCB
RoHS Compliant Bare PCB, TO220-5 / TO263-5
Voltage Regulator Evaluation Board
Advanced
Circuits
104-00203
1
R1
10K Res, Smt 0805, 1%, 1/8W
Rohm
MCR10EZHF1002
1
R2
69.8K Res, Smt 0805, 1%, 1/8W
Rohm
MCR10EZHF6982
4
R3, R4, R5,
R6
*** DO NOT POPULATE ***
—
—
10
TP1, TP2,
TP3, TP4,
TP5, TP6,
TP7, TP8,
TP9, TP10
SMT Testpoint
Keystone
Electronics®
5016
1
U1
*** DO NOT POPULATE ***
—
—
Note 1:
The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM
used in manufacturing uses all RoHS-compliant components.
© 2009 Microchip Technology Inc.
DS00000A-page 15
WORLDWIDE SALES AND SERVICE
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
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Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
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Web Address:
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Fax: 82-53-744-4302
China - Hong Kong SAR
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Fax: 852-2401-3431
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Hsin Chu
Tel: 886-3-6578-300
Fax: 886-3-6578-370
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-536-4803
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
03/26/09
DS51817A-page 16
© 2009 Microchip Technology Inc.