MIC2125/6 Demonstration Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/20005469A.pdf · Select the Help menu, and then Topics to open a list of available online help files

2015 Microchip Technology Inc. DS20005469A

MIC2125/6Demonstration Board

User’s Guide

DS20005469A-page 2 2015 Microchip Technology Inc.

Information contained in this publication regarding deviceapplications and the like is provided only for your convenienceand may be superseded by updates. It is your responsibility toensure that your application meets with your specifications.MICROCHIP MAKES NO REPRESENTATIONS ORWARRANTIES OF ANY KIND WHETHER EXPRESS ORIMPLIED, WRITTEN OR ORAL, STATUTORY OROTHERWISE, RELATED TO THE INFORMATION,INCLUDING BUT NOT LIMITED TO ITS CONDITION,QUALITY, PERFORMANCE, MERCHANTABILITY ORFITNESS FOR PURPOSE. Microchip disclaims all liabilityarising from this information and its use. Use of Microchipdevices in life support and/or safety applications is entirely atthe buyer’s risk, and the buyer agrees to defend, indemnify andhold harmless Microchip from any and all damages, claims,suits, or expenses resulting from such use. No licenses areconveyed, implicitly or otherwise, under any Microchipintellectual property rights unless otherwise stated.

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Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of ourproducts. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such actsallow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

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ISBN: 978-1-5224-0069-1

Object of Declaration: MIC2125/6 Demonstration Board

2015 Microchip Technology Inc. DS20005469A-page 3

NOTES:


MIC2125/6 DEMONSTRATION BOARD USER’S GUIDE

Table of Contents

Preface ........................................................................................................................... 7

Chapter 1. Product Overview1.1 Introduction ................................................................................................... 11

1.2 MIC2125/6 Short Overview .......................................................................... 111.2.1 MIC2125/6 Key Features .......................................................................... 11

1.2.2 MIC2125/6 Overview ................................................................................. 11

1.3 What is the MIC2125/6 Demo Board? .......................................................... 121.3.1 Requirements ............................................................................................. 121.3.2 Precautions ................................................................................................ 121.3.3 Feedback Resistors.................................................................................... 131.3.4 SW Node .................................................................................................... 131.3.5 Current Limit ............................................................................................... 131.3.6 Loop Gain Measurement ............................................................................ 141.3.7 Setting the Switching Frequency................................................................ 15

1.4 MIC2125/6 Demo Board Kit Contents .......................................................... 16

Chapter 2. Installation and Operation2.1 Overview ...................................................................................................... 17

2.2 Getting Started ............................................................................................. 172.2.1 VIN Supply ................................................................................................. 17

2.2.2 Connect Load and Monitor Output ............................................................. 17

2.2.3 Enable Input ............................................................................................... 17

2.2.4 Turn On the Power ..................................................................................... 17

Appendix A. Schematics and LayoutsA.1 Introduction .................................................................................................. 19

A.2 Board - Schematic (16-Lead QFN Part) ....................................................... 20

A.3 Board - Top Layer ........................................................................................ 21

A.4 Board - Mid Layer 1 (Ground Plane) ............................................................ 21

A.5 Board - Mid Layer 2 ..................................................................................... 22

A.6 Board - Bottom Layer ................................................................................... 22

Appendix B. Bill of Materials (BOM) .................................................................................. 23

Worldwide Sales and Service .................................................................................... 26


MIC2125/6 Demonstration Board User’s Guide

NOTES:


MIC2125/6 DEMONSTRATION
BOARD
Preface

INTRODUCTION

This chapter contains general information that will be useful to know before using the MIC2125/6 Demo 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 MIC2125/6 Demo Board as a developmenttool to emulate and debug firmware on a target board, as well as how to programdevices. The document is organized as follows:

• Chapter 1. “Product Overview” – Provides important information about theMIC2125/6 Demo Board and shows the hardware details of its components.

• Chapter 2. “Installation and Operation” – Includes instructions on how to use,power and test the MIC2125/6 Demo Board.

• Appendix A. “Schematics and Layouts” – Shows the schematic and layoutdiagrams for the MIC2125/6 Demo Board.

• Appendix B. “Bill of Materials (BOM)” – Lists the parts used to build theMIC2125/6 Demo Board.

NOTICE TO CUSTOMERS

All documentation becomes dated, and this manual is no exception. Microchip tools anddocumentation are constantly evolving to meet customer needs, so some actual dialogsand/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 eachpage, in front of the page number. The numbering convention for the DS number is“DSXXXXXXXXA”, where “XXXXXXXX” is the document number and “A” is the revision levelof the document.

For the most up-to-date information on development tools, see the MPLAB® IDE online help.Select the Help menu, and then Topics to open a list of available online help files.



CONVENTIONS USED IN THIS GUIDE

This manual uses the following documentation conventions:

DOCUMENTATION CONVENTIONS

Description Represents Examples

Arial font:

Italic characters Referenced books MPLAB® IDE User’s Guide

Emphasized text ...is the only compiler...

Initial caps A window the Output window

A dialog the Settings dialog

A menu selection select Enable Programmer

Quotes A field name in a window or dialog

“Save project before build”

Underlined, italic text with right angle bracket

A menu path File>Save

Bold characters A dialog button Click OK

A tab Click the Power tab

N‘Rnnnn A number in verilog format, where N is the total number of digits, R is the radix and n is a digit.

4‘b0010, 2‘hF1

Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>

Courier New font:

Plain Courier New Sample source code #define START

Filenames autoexec.bat

File paths c:\mcc18\h

Keywords _asm, _endasm, static

Command-line options -Opa+, -Opa-

Bit values 0, 1

Constants 0xFF, ‘A’

Italic Courier New A variable argument file.o, where file can be any valid filename

Square brackets [ ] Optional arguments mcc18 [options] file [options]

Curly brackets and pipe character: |

Choice of mutually exclusive arguments; an OR selection

errorlevel 0|1

Ellipses... Replaces repeated text var_name [, var_name...]

Represents code supplied by user

void main (void) ...


Preface

RECOMMENDED READING

This user's guide describes how to use the MIC2125/6 Demo Board. Another useful document is listed below. The following Microchip document is available and recommended as a supplemental reference resource:

• MIC2125/6 Data Sheet – “28V Synchronous Buck Controllers Featuring Adaptive ON-Time Control” (DS20005459)

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

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://www.microchip.com/support.

DOCUMENT REVISION HISTORY

Revision A (December 2015)

• Initial release of this document.

2015 Microchip Technology Inc .DS20005469A-page 9

http://www.microchip.com/

http://www.microchip.com/support


NOTES:



Chapter 1. Product Overview

1.1 INTRODUCTION

This chapter provides an overview of the MIC2125/6 Demo Board and covers the following topics:

• MIC2125/6 Short Overview

• What is the MIC2125/6 Demo Board?

• MIC2125/6 Demo Board Kit Contents

1.2 MIC2125/6 SHORT OVERVIEW

1.2.1 MIC2125/6 Key Features

The key features of the MIC2125/6 include:

• Hyper Speed Control® Architecture Enables:

- High delta V operation (VIN = 28V and VOUT = 0.6V)

• Any Capacitor™ stable

• 4.5V to 28V Input Voltage

• Adjustable Output Voltage from 0.6V to 24V

• 200 kHz to 750 kHz Programmable Switching Frequency

• HyperLight Load® (MIC2125)

• Hyper Speed Control (MIC2126)

• Enable Input and Power Good Output

• Built-in 5V Regulator for Single-Supply Operation

• Programmable Current Limit and “Hiccup” Mode Short-Circuit Protection

• 7 ms Internal Soft-Start, Internal Compensation, and Thermal Shutdown

• Supports Safe Start-Up into a Prebiased Output

• –40°C to +125°C Junction Temperature Range

• 16-pin, 3 mm × 3 mm QFN Package

1.2.2 MIC2125/6 Overview

The MIC2125 and MIC2126 are constant-frequency synchronous buck controllersfeaturing a unique adaptive ON-time control architecture. The MIC2125/6 operate overan input voltage range from 4.5V to 28V and can be used to supply load current up to25A. The output voltage is adjustable down to 0.6V with an accuracy of ±1%. Thedevice operates with programmable switching frequency from 200 kHz to 750 kHz.

HyperLight Load® architecture operates in pulse-skipping mode at light loads, butoperates in fixed-frequency CCM mode from medium loads to heavy loads. HyperSpeed Control® architecture operates in fixed-frequency CCM mode under all loadconditions.



The basic parameters of the evaluation board are:

• Input: 5V to 28V

• Output: 0.6V to 5V at 20A

• 350 kHz Switching Frequency (Adjustable from 200 kHz to 750 kHz)

FIGURE 1-1: Typical Application Circuit.

1.3 WHAT IS THE MIC2125/6 DEMO BOARD?

The MIC2125/6 Demo Board has been developed to demonstrate the capabilities ofthe MIC2125/6 device with two adaptive ON-time control architectures:

• Hyper Speed Control (MIC2126)

• HyperLight Load (MIC2125)

1.3.1 Requirements

The MIC2125 and MIC2126 evaluation boards require only a single power supply withat least 10A current capability. The MIC2125/6 each have an internal VDD LDO, so noexternal linear regulator is required to power the internal biasing of the IC. Inapplications with VIN < +5.5V, VDD should be tied to VIN to by-pass the internal linearregulator. The output load can either be a passive or an active load.

1.3.2 Precautions

The MIC2125/6 evaluation boards do not have reverse polarity protection. Applying anegative voltage to the VIN and GND terminals may damage the device. The maximumVIN of the board is rated at 28V.

VIN4.5V TO 28V

2.2μF×3 220μF

0.1μF

0.1μF

0.72μHVOUT3.3V/20A

9.09kΩ

1.2kΩ

10kΩ

56.2kΩ

2.26kΩ10kΩ

4.7nF 100μF 470μF

4.7μF

EN

PGVOUT

PVDD

VDD

AGND

EN

PG

OVP

FB

FREQ

VIN

BST

DH

SW

DL

PGND

ILIM

MIC2125/6

CAUTION

Exceeding 28V on the VIN pin can damage the device.


Product Overview

1.3.3 Feedback Resistors

The output voltage on the MIC2125/6 evaluation boards, which are preset to 1.2V, isdetermined by the feedback divider:

EQUATION 1-1:

All other voltages not listed above can be set by modifying RBOTTOM value accordingto Equation 1-2.

EQUATION 1-2:

Note that the output voltage should not be set to exceed 5V due to the 6.3V voltagerating on the output capacitors.

1.3.4 SW Node

Test point J1 (VSW) is placed for monitoring the switching waveform, one of the mostcritical waveforms for the converter.

1.3.5 Current Limit

The MIC2125/6 use the RDS(ON) of the low-side MOSFET and an external resistorconnected from the ILIM pin to the SW node to determine the current limit.

In each switching cycle of the MIC2125/6, the inductor current is sensed by monitoringthe low-side MOSFET in the OFF period. The sensed voltage V(ILIM) is compared withthe power ground (PGND) after a blanking time of 150 ns. In this way, the drop voltageover resistor R17 (VCL) is compared with the drop over the bottom FET, generating theshort current limit. The small capacitor (C18) connected from the ILIM pin to PGNDfilters the switching node ringing during the OFF-time, allowing a better short currentlimit measurement. The time constant created by R17 and C18 should be much lessthan the minimum OFF-time.

The VCL drop allows the programming of the short current limit through the value of theresistor (RCL). If the absolute value of the voltage drop on the bottom FET is greaterthan VCL, then V(ILIM) is lower than PGND and a short-circuit event is triggered. A hiccupcycle is then generated to treat the short-circuit event.

VOUT VREF 1R1

RBOTTOM-------------------------+

=

Where:

VREF 0.6V

RBOTTOM R4 = 0.9V

R5 = 1.0V

R6 = 1.2V

R7 = 1.5V

R8 = 1.8V

R9 = 2.5V

R10 = 3.3V

R11 = 5V

OPEN = 0.6V

RBOTTOMR1 VREFVOUT VREF–----------------------------------=



The hiccup sequence, including the soft-start, reduces the stress on the switching FETsand protects the load and supply in severe short conditions.

FIGURE 1-2: MIC2125/6 Current-Limiting Circuit.

The short-circuit current-limit can be programmed by using the following formula.

EQUATION 1-3:

The MOSFET RDS(ON) varies 30% to 40% with temperature; therefore, it isrecommended to add a 50% margin to ICL in the equation above to avoid false currentlimiting due to any rise in MOSFET junction temperature. It is also recommended toconnect the SW pin directly to the drain of the low-side MOSFET to accurately sensethe MOSFET’s RDS(ON).

1.3.6 Loop Gain Measurement

The resistor, R14, is placed in series with the regulator feedback path. The control loopgain can be measured by connecting an impedance analyzer across the resistor andselecting a resistor value in between 20Ω to 50Ω.

R17ICLIM PP+ 0.5 RDS ON VCL–

ICL----------------------------------------------------------------------------------------------=

Where:

ICLIM Desired Current Limit

∆PP Inductor Current Peak-to-Peak

RDS(ON) On-Resistance of Low-Side Power MOSFET

VCL Current-Limit Threshold (Typical Value is 14 mV)

ICL Current-Limit Source Current (Typical Value is 36 µA)


Product Overview

1.3.7 Setting the Switching Frequency

The MIC2125/6 are adjustable-frequency, synchronous buck controllers that feature aunique adaptive ON-time control architecture. The switching frequency can beadjusted between 200 kHz and 750 kHz by changing the resistor divider network, whichconsists of R19 and R20.

FIGURE 1-3: Switching Frequency Adjustment.

The following formula gives the estimated switching frequency:

EQUATION 1-4:

For more precise setting, it is recommended to use the following graph.

FIGURE 1-4: Switching Frequency vs. R20.

The evaluation board design is optimized for a switching frequency of 350 kHz. If theswitching frequency is programmed to either the lower end or higher end, the designneeds optimization.

VDD/PVDD

SW

FB

VDD5V

2.2μFx3

AGND

MIC2125/6

BST4.7μF

PGND

VINVIN

FREQ

CS

R20

R19

fSW ADJ fOR20

R19 R20+---------------------------=

Where:

fO Switching Frequency When R19 is 100kΩ and R20 is open; fO is typically 750 kHz.



1.4 MIC2125/6 DEMO BOARD KIT CONTENTS

This MIC2125/6 Demo Board kit includes the following items:

• MIC2125/6 Demo Board (MIC2125YML-20A-EV or MIC2126YML-20A-EV)

• Important Information Sheet



Chapter 2. Installation and Operation

2.1 OVERVIEWThe following sections describe how to use the MIC2125/6 Demo Board to fully evalu-ate and demonstrate the capabilities of the MIC2125/6 device.

2.2 GETTING STARTED

2.2.1 VIN Supply

Connect a supply to the VIN and GND terminals, paying careful attention to the polarity and the supply range (5V < VIN < 28V). Monitor IIN with a current meter and input volt-age at VIN and GND terminals with voltmeter. Do not apply power until step 2.2.4.

2.2.2 Connect Load and Monitor Output

Connect a load to the VOUT and GND terminals. The load can be either a passive (resistive) or an active (as in an electronic load) type. A current meter may be placed between the VOUT terminal and the load to monitor the output current. Ensure the out-put voltage is monitored at the VOUT terminal.

2.2.3 Enable Input

The EN pin has an on board 100kΩ pull-up resistor (R22) to VIN that allows the output to be turned on when VDD exceeds its UVLO threshold. An EN connector is provided on the evaluation board for users to easily access the enable feature. Applying an external logic signal on the EN pin to pull it low or using a jumper to short the EN pin to GND will shut off the output of the MIC2125/6 evaluation board.

2.2.4 Turn On the Power

Turn on the VIN supply and verify that the output voltage is regulated to 3.3V.



NOTES:


MIC2125/6 DEMONSTRATIONBOARD

Appendix A. Schematics and Layouts

A.1 INTRODUCTION

This Appendix contains the following schematics and layouts for the MIC2125/6 Demo Board (MIC2125YML-20A-EV or MIC2126YML-20A-EV):

• Board - Schematic (16-Lead QFN Part)

• Board - Top Layer

• Board - Mid Layer 1 (Ground Plane)

• Board - Mid Layer 2

• Board - Bottom Layer



A.2 BOARD - SCHEMATIC (16-LEAD QFN PART)TP3TP4

TP5TP6

TP1TP2

EN

R2210kΩ

GND

D1 OPEN

C81μF

C6

R150Ω

0.1μF

R19

178kΩ

R20

121kΩ

R1849.9kΩ

PG

R231Ω

R140Ω

GND

C90.47μF

C74.7μF

C174.7μF

J9

VDD

R24

10kΩ

R21

49.9Ω

J1

VSW

L1

720nH

R25

OPENVOUT

13

14

15

16

8

7

6

5

12 11 10 9

1 2 3 4

AG

ND

NC

OV

PB

ST

VD

D

PV

VD

ILIM

DL

SWDH

FREQ

PGND

FB

PG

EN

VIN

U1MIC2125YML

U1

R16

2Ω

R17

1.2kΩC18

OPEN

VIN

TP8

TP13

TP14

TP7

C1220μF

+

C13470μF

+

C15OPEN

+

C210μF

C310μF

C124.7nF

C14100μF

C19100μF

C20100μF

C410μF

C100.1μF

C160.1μF

Q1D5 D6D7

S1 S2S3 S1 S2S3

D8Q2D5 D6D7 D8

S1 S2S3

Q3D5 D6D7 D8

S1 S2S3

Q4D5 D6D7 D8 R2

1.21Ω

C112.2nF

IRFH4213TRPB IRFH4213TRPB

IRFH4234TRPB

G G

G G

OPEN

R39.09kΩ

R110kΩ

VOUTVOUT

C211μF

C5OPEN

R13OPEN

R12OPEN

R111.37kΩ

5V

R102.26kΩ

3.3V

R93.16kΩ

2.5V

R84.99kΩ

1.8V

R76.65kΩ

1.5V

R610kΩ1.2V

R515kΩ1.0V

R430.1kΩ

0.8V

J14

2PIN

J13

2PIN

J11

2PIN J8

2PIN J7

2PIN J6

2PIN J5

2PIN J4 J3

2PIN

2PIN J2

2PIN

J12 FB


Schematics and Layouts

A.3 BOARD - TOP LAYER

A.4 BOARD - MID LAYER 1 (GROUND PLANE)



A.5 BOARD - MID LAYER 2

A.6 BOARD - BOTTOM LAYER


MIC2125/6 DEMONSTRATIONBOARD

Appendix B. Bill of Materials (BOM)

TABLE B-1: BILL OF MATERIALS (BOM)

Qty. Reference Description Manufacturer Part Number

1 C1 220 µF/35V Aluminum Capacitor Nichicon UHE1V221MPD6

3 C2, C3, C4 10 µF/35V, Ceramic Capacitor, X7R, Size 1210

Murata GRM32ER7YA106K

TDK C3216X7R1V106K160AC

3 C14, C19, C20

100 µF/6.3V Ceramic Capacitor, X5R, Size 1210 Murata GRM32ER60J107M

AVX 12106D107KAT2A

TDK C3225X5R0J107M250AC

3 C6, C16, C10 0.1 µF/50V Ceramic Capacitor, X7R, Size 0603 Murata GRM188R71H104K

AVX 06035C104KAT2A

TDK C1608X7R1H104K

2 C7, C17 4.7 µF/10V Ceramic Capacitor, X7R, Size 0603 Murata GRM188C71A475K

AVX 0603ZD475KAT2A

TDK CGB3B1X5R1A475K

2 C8, C21 1 µF/6.3V Ceramic Capacitor, X7R, Size 0603 Murata GRM188R70J105K

AVX 06036C105KAT2A

TDK C1608X5R0J105K

1 C9 0.47 µF/50V Ceramic Capacitor, X7R, Size 0805 Murata GRM21BR71H474K

AVX 08055C474KAT2A

1 C11 2.2 nF/100V Ceramic Capacitor, X7R, Size 0603 Murata GRM188R72A222K

AVX 06031C222KAT2A

TDK C1608X7R2A222K

1 C12 4.7 nF/50V Ceramic Capacitor, C0G, Size 0603 Murata GRM1885C1H472J

AVX 06035A471JAT2A

TDK C1608C0G1H471J080AA

1 C13 470 µF/6.3V, 7mΩ, OSCON Sanyo 6SEPC470MX

1 C15 (OPEN) 470 µF/6.3V, POSCAP Sanyo 6TPB470M

1 C5 (OPEN) 100 µF/6.3V Ceramic Capacitor, X5R, Size 1210 Murata GRM32ER60J107M

1 C18 (OPEN) 10 pF/50V Ceramic Capacitor, C0G, Size 0603 Murata GRM1885C1H100J

AVX 06035A100JAT2A

D1 (OPEN)

1 L1 0.72 µH, 35 ASAT, 22 ARMS for 40ºC rise Wurth 744325072

1 Q1 MOSFET, N-CH, Power SO-8 IRF IRFH4234TRPB

2 Q3, Q4 MOSFET, N-CH, Power SO-8 IRF IRFH4213TRPB

1 R1 10 kΩ Resistor, Size 0603, 1% Vishay Dale CRCW060310K0FKEA

1 R2 1.21 Ω Resistor, Size 0805, 5% Vishay Dale CRCW08051R21FKEA

1 R3 9.09 kΩ, 1%, 1/10W, 0603 Vishay Dale CRCW06039K09FKEA

1 R4 30.1 kΩ Resistor, Size 0603, 1% Vishay Dale CRCW060330K1FKEA

Note: 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.


Bill of Materials (BOM)








R12, R13, R25 (OPEN)

2 R14, R15 0Ω Resistor, Size 0603, 5% Vishay Dale CRCW06030000Z0EA

1 R16 2Ω Resistor, Size 0603, 1% Vishay Dale CRCW06032R00FKEA

1 R17 750Ω Resistor, Size 0603, 1% Vishay Dale CRCW0603750RFKEA


1 R19 178 kΩ Resistor, Size 0603, 1% Vishay Dale CRCW0603178KFKEA

1 R20 121 kΩ Resistor, Size 0603, 1% Vishay Dale CRCW0603121KFKEA

1 R21 49.9Ω Resistor, Size 0603, 1% Vishay Dale CRCW060349R9FKEA

2 R22, R24 10 kΩ Resistor, Size 0603, 1% Vishay Dale CRCW060310K0FKEA

1 R23 1Ω Resistor, Size 0603, 1% Vishay Dale CRCW06031R00FKEA

1 U1 28V Synchronous Buck Controllers Featuring Adaptive ON-Time Control

Microchip Technology Inc.

MIC2125YML

MIC2126YML

TABLE B-1: BILL OF MATERIALS (BOM) (CONTINUED)

Qty. Reference Description Manufacturer Part Number

Note: 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.


Bill of Materials (BOM)

NOTES:



AMERICASCorporate Office2355 West Chandler Blvd.Chandler, AZ 85224-6199Tel: 480-792-7200 Fax: 480-792-7277Technical Support: http://www.microchip.com/supportWeb Address: www.microchip.com

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07/14/15

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