MTD6501D [MICROCHIP]
3-Phase Brushless DC Sinusoidal Sensorless Fan Motor Driver; 3相无刷直流正弦无传感器风扇电机驱动器
| 型号： | MTD6501D |
| 厂家： | 
MICROCHIP |
| 描述： | 3-Phase Brushless DC Sinusoidal Sensorless Fan Motor Driver |
| 文件： | 总24页 (文件大小：920K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MTD6501C/D/G
3-Phase Brushless DC Sinusoidal Sensorless Fan Motor Driver
Features
Description
• Position Sensorless BLDC Drivers (No Hall
Sensor Required)
The MTD6501C/D/G devices are 3-phase, full-wave
drivers for brushless sensorless DC motors. They
feature 180° sinusoidal drive, high torque output, and
silent drive. Due to their adaptive features and wide
power-supply range capabilities (2V to 14V), they are
intended to cover a wide range of motor characteristics,
while requiring no external tuning from the user. Speed
control can be achieved through either power supply
modulation or pulse-width modulation (using the PWM
digital input pin).
• 180° Sinusoidal Drive, for High Efficiency and Low
Acoustic Noise
• Support 2V to 14V Power Supplies
• Speed Control Through PAM and/or PWM
• Built-in Frequency Generator (FG Output Signal)
• Built-in Lock-up Protection and Automatic
Recovery Circuit (External Capacitor not
Necessary)
Due to the compact packaging and minimum bill of
materials (power transistors incorporated, no Hall
sensor, no external tuning), they are best suited for low-
cost fan applications requiring high efficiency and low
acoustic noise, such as CPU cooling fans. Frequency
generator output enables precision speed control in
closed-loop applications. The MTD6501C/D/G drivers
include a Lock-up Protection mode, which turns off the
output current when the motor is under lock condition,
and an automatic recovery that enables the fan to run
when the lock condition is removed. Motor overcurrent
limitation, short-circuit protection and thermal-
shutdown protection are also included.
• Built-in Over Current Limitation and Short Circuit
Protection
• Built-in Thermal Shutdown Protection
• Thermally Enhanced SOP-8 Package for
MTD6501C and MTD6501G (Maximum Output
Current – 800 mA);
• MSOP-10L Package for MTD6501D (Maximum
Output Current – 500 mA)
• 20 kHz PWM Output Frequency for MTD6501C/D
and 23 kHz for MTD6501G
• Boost Mode (Optional Back Electromotive Force
(BEMF) Pre-amplification in MTD6501D)
The MTD6501C and the MTD6501G are available in a
compact thermally-enhanced SOP-8 package, while
the MTD6501D is available in the MSOP-10L package.
• No External Tuning Required
The MTD6501C/D/G devices are formerly products of
Advanced Silicon.
Package Types
MTD6501C, MTD6501G
SOP-8
PWM
1
2
3
4
8
7
6
5
FG
VCC
VDD
OUT1
OUT2
OUT3
GND
MTD6501D
MSOP
PWM
FG
1
2
10
9
GND
BOOST
VCC
VDD 3
8
OUT1
OUT3
4
5
7
OUT2
GND
6
2010-2012 Microchip Technology Inc.
DS22263B-page 1
MTD6501C/D/G
Functional Block Diagram
BOOST *MTD6501D Only
VCC
VREF
Motor Phase
Detection Circuit
Regulator
VDD
FG
Overcurrent
protection
VCC
Timing
Controller
OUT3
OUT2
OUT1
VDD
PWM
Input
PWM
GND
Thermal
protection
Short-circuit
protection
DS22263B-page 2
2010-2012 Microchip Technology Inc.
MTD6501C/D/G
Typical Application – Fan Motor Driver Using the MTD6501C or MTD6501G
PWM input
(0.02-100 kHz)
Vlogic
(controller side)
R1
FG
PWM 8
VCC
1
VCC
2 VDD
7
C1
C2
3 OUT1
4 OUT2
OUT3 6
GND 5
Recommended External Components for Typical Application
Element
Type/Value
Comment
C1
C2
R1
>1 µF
>1 µF
Connect as close as possible to IC input pins
Connect as close as possible to IC input pins
Connect to Vlogic on controller side
>10 kΩ
2010-2012 Microchip Technology Inc.
DS22263B-page 3
MTD6501C/D/G
Typical Application – Fan Motor Driver Using the MTD6501D
PWM input
(0.02-100 kHz)
Vlogic
(controller side)
R1
Tie to GND
for BOOST
mode
10
FG
PWM
1
2
3
GND
VDD
BOOST 9
VCC
OUT3
GND
8
7
6
C1
OUT1
OUT2
C2
4
5
Recommended External Components for Typical Application
Element
Type/Value
Comment
C1
C2
R1
>1 µF
>1 µF
Connect as close as possible to IC input pins
Connect as close as possible to IC input pins
Connect to Vlogic on controller side
>10 kΩ
DS22263B-page 4
2010-2012 Microchip Technology Inc.
MTD6501C/D/G
† Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of
the device at those or any other conditions above those
indicated in the operational listings of this specification
is not implied. Exposure to maximum rating conditions
for extended periods may affect device reliability.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings†
Power Supply Voltage (V
Maximum OUT1, 2, 3 Output Voltage (V
) .................... -0.7 to +15.3V
CC_MAX
) .................
OUT_MAX
................................................................-0.7 to +15.3V+0.7V
Note 1: Reference PCB, according to JEDEC
FG Maximum Output Voltage (V
) ......... -0.7 to +15.3V
)....................800 mA
)....................500 mA
) ......... -0.7 to +15.3V
).....................5.0 mA
FG_MAX
OUT_MAX
OUT_MAX
standard EIA/JESD 51-9.
(3,4)
Maximum Output Current
Maximum Output Current
(I
(I
(3,5)
2: Derating applies for ambient temperatures
outside the specified operating range (refer
to Figure 1-1).
FG Maximum Output Voltage (V
FG Maximum Output Current (I
FG_MAX
FG_MAX
V
Maximum Voltage (V
) ..................... -0.7 to +4.0V
DD
DD_MAX
3: OUT1, OUT2, OUT3 (Continuous,
PWM Maximum Voltage (V
) ................ -0.7 to +4.0V
PWM_MAX
100% duty cycle).
(1,2,4)
Allowable Power Dissipation
Allowable Power Dissipation
(P
(P
).....................1.0W
).....................0.5W
D_MAX
(1,2,5)
4: MTD6501C and MTD6501G
5: MTD6501D
D_MAX
Max Junction Temperature (T )....................................+150°C
J
ELECTRICAL CHARACTERISTICS
Electrical Specifications: Unless otherwise specified, all limits are established for VCC = 5.0V, TA = +25°C
Parameters
Sym.
Min.
Typ.
Max.
Units
Conditions
Power Supply Voltage
Power Supply Current
VCC
IVCC
2
—
10
14
—
V
—
mA
Rotation Mode
5
Lock-Protection Mode
IOUT = 0.5A, VCC = 3.3V to 14V
IOUT = -0.5A, VCC = 3.3V to 14V
IOUT = 0.5A, VCC = 3.3V to 14V
VCC = 3.3V to 14V
VCC < 3.3V
OUTx High Resistance
OUTx Low Resistance
RON(H)
RON(L)
—
—
—
—
0.75
0.75
1.5
3
1
1
Ω
Ω
OUTx Total Resistance RON(H+L)
2
Ω
VDD Output Voltage
VDD
—
V
VCC – 0.2
—
V
PWM Input Frequency
PWM Input H Level
PWM Input L Level
fPWM
0.02
100
3.6
kHz
V
—
VPWM_H 0.8*VDD
—
—
VPWM_L
IPWM_L
0
17
8
—
0.2*VDD
—
V
—
PWM Internal Pull-Up
Current
34
µA
µA
kHz
kHz
V
PWM = GND, VCC = 3.3V to 14V
PWM = GND, VCC < 3.3V
MTD6501C and MTD6501D
MTD6501G
17
—
PWM Output
Frequency
fPWM_O
—
20
—
23
FG Output Pin Low
Level Voltage
VOL_FG
ILH_FG
TRUN
—
—
—
0.25
10
IFG = -1 mA
FG Output Pin Leakage
Current
—
0.5
5
µA
s
VFG = 14V
Lock Protection
Operating Time
—
—
—
—
Lock Protection Waiting
Time
TWAIT
4.5
5.5
s
Thermal Shutdown
TSD
—
—
170
25
—
—
°C
°C
—
—
Thermal Shutdown
Hysteresis
TSD_HYS
2010-2012 Microchip Technology Inc.
DS22263B-page 5
MTD6501C/D/G
TEMPERATURE SPECIFICATIONS
Electrical Specifications: Unless otherwise specified, all limits are established for VCC = 5.0V, TA = +25°C
Parameters
Sym.
Min.
Typ.
Max.
Units
Conditions
Temperature Ranges
Operating Temperature
Storage Temperature Range
TOPR
TSTG
-30
-55
—
—
+95
°C
°C
+150
1.2
SOP-8
1
0.8
0.6
0.4
0.2
0
MSOP-10
TA (°C)
FIGURE 1-1:
Allowable Power Dissipation (PD_MAX) as a Function of Ambient Temperature (TA).
DS22263B-page 6
2010-2012 Microchip Technology Inc.
MTD6501C/D/G
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
MTD6501C/D/G PIN FUNCTION TABLE
MTD6501C,
MTD6501G
MTD6501D
Type
Symbol
Description
SOP-8
MSOP
1
2
1
3
O
P
O
O
P
O
P
I
FG
VDD
Motor speed indication output
Internal regulator output (for decoupling only)
Single-phase coil output pin
3
4
OUT1
OUT2
GND
4
5
Single-phase coil output pin
5
2, 6
7
Negative voltage supply (ground)
Single-phase coil output pin
6
OUT3
VCC
7
8
Positive voltage supply for motor driver
PWM input signal for speed control
Boost mode selection:
8
10
9
PWM
BOOST
N/A
I
• Pin floating for Normal mode
• Pin tied to GND for Boost mode
Legend: I = Input; O = Output; P = Power
2010-2012 Microchip Technology Inc.
DS22263B-page 7
MTD6501C/D/G
NOTES:
DS22263B-page 8
2010-2012 Microchip Technology Inc.
MTD6501C/D/G
3.4
Overcurrent Protection and Short
Circuit Detection
3.0
FUNCTIONAL DESCRIPTION
The MTD6501C/D/G devices generate a full-wave sig-
nal to drive a 3-phase sensorless BLDC motor. High
efficiency and low-power consumption are achieved
due to DMOS transistors and synchronous rectification
drive type. The current carrying order of the output is as
follows: OUT1 OUT2 OUT3.
The motor peak current is limited by the driver to a fixed
value (defined internally), thus limiting the maximum
power dissipation in the coils. The detection of a short-
circuit situation immediately sets the driver outputs to
high-impedance, in order to avoid permanent damage
to the IC.
3.1
Speed Control
3.5
Thermal Shutdown
The rotational speed of the motor can be controlled
either through the PWM digital input signal or by acting
directly on the power supply (VCC). When the PWM
signal is “High” (or left open) the motor rotates at full
speed. When the PWM signal is “Low”, the motor is
stopped (and the IC outputs are set to high-
impedance). By changing the PWM duty cycle, the
speed can be adjusted. Notice that the PWM frequency
has no special meaning for the motor speed and is
asynchronous with the activation of the output
transistors. Thus, the user has maximum freedom to
choose the PWM system frequency within a wide range
(from 20 Hz to 100 kHz), while the output transistor
activation always occurs at a fixed rate, which is
outside of the range of audible frequencies. The
MTD6501C and MTD6501D typical output frequency is
20 kHz. The MTD6501G output frequency is 23 kHz.
The MTD6501C/D/G have
a thermal protection
function which detects when the die temperature
exceeds TSD = +170°C. When this temperature is
reached, the circuit enters Thermal Shutdown mode
and the outputs OUT1, OUT2 and OUT3 are disabled
(high-impedance), avoiding IC destruction and allowing
the circuit to cool down. Once the junction temperature
(TSD) has dropped below +145°C, the normal operation
resumes (thermal detection circuit has +25°C
hysteresis function).
Thermal Shutdown
3.2
Frequency Generator Function
Normal operation
The Frequency Generator output is a “Hall-sensor
equivalent” digital output, giving information to an
external controller about the speed and phase of the
motor. The FG pin is an open drain output, connecting
to a logical voltage level through an external pull-up
resistor. When a lock (or out-of-sync) situation is
detected by the driver, this output is set to high-imped-
ance until the motor is restarted. Leave the pin open
when not used. The FG signal can be used to compute
the motor speed in rotations per minute (RPM). Typi-
cally, for a four pole BLDC fan, the speed in RPMs is 30
FG frequency (Hz).
T
SD
+145°C
+170°C
FIGURE 3-1:
Hysteresis.
Thermal Protection
3.6
Internal Voltage Regulator
VDD voltage is generated internally and is used to
supply internal logical blocks. The VDD pin is used to
connect an external decoupling capacitor (1 µF or
higher). Notice that this pin is for IC internal use and is
not designed to supply DC current to external blocks.
3.3
Lockup Protection and Automatic
Restart
If the motor is stopped (blocked) or if it loses
synchronization with the driver, a lock-up protection
circuit detects this situation and disables the driver (by
setting its outputs to high-impedance) in order to
prevent the motor coil from burnout. After a “waiting
time” (TWAIT), the lock-up protection is released and
normal operation resumes for a given time (TRUN). In
case the motor is still blocked, a new period of waiting
time is started. TWAIT and TRUN timings are fixed
internally, so that no external capacitor is needed.
2010-2012 Microchip Technology Inc.
DS22263B-page 9
MTD6501C/D/G
3.7
Boost Mode (MTD6501D)
The Boost mode is an optional BEMF pre-amplification
by a factor of three. The intention of Boost mode is to
compensate for motors with a low coupling coefficient
(= BEMF coefficient), thus allowing it to cover an even
wider range of motor characteristics. Notice that Boost
mode impacts the mechanical performance of the
motor altogether. In Boost mode, the speed of the
motor will adjust faster to variations of the control (VCC
or PWM) and/or of the load, including at start-up.
However, when the BEMF is amplified too much, the
mechanical performance (in terms of vibration and
acoustic noise) may start degrading. Thus, Boost mode
may be inappropriate for motors that already have a
good coupling coefficient. The optimum choice
between normal mode and Boost mode depends both
on the application requirements and on the motor
characteristics.
Refer to Table 3-1 for usage of Boost pin 9; leaving this
pin floating results in the normal mode of operation,
while tying this pin to GND activates Boost mode
(active low feature, internal pull-up).
TABLE 3-1:
POSSIBLE MODES OF
OPERATION BASED ON THE
BOOST PIN CONNECTION
BOOST Pin
Floating
Mode of Operation
Normal
Boost
Tied to GND
DS22263B-page 10
2010-2012 Microchip Technology Inc.
MTD6501C/D/G
4.0
4.1
PACKAGING INFORMATION
Package Marking Information
8-Lead SOP (3.90 mm) (MTD6501C, MTD6501G)
Example
MTD6501C
HC 1135
e
3
256
NNN
10-Lead MSOP (MTD6501D)
Example
6501D
135256
Legend: XX...X Customer-specific information
Y
YY
WW
NNN
Year code (last digit of calendar year)
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
e
3
Pb-free JEDEC designator for Matte Tin (Sn)
This package is Pb-free. The Pb-free JEDEC designator (
can be found on the outer packaging for this package.
e
3
*
)
Note: In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information.
2010-2012 Microchip Technology Inc.
DS22263B-page 11
MTD6501C/D/G
DS22263B-page 12
2010-2012 Microchip Technology Inc.
MTD6501C/D/G
2010-2012 Microchip Technology Inc.
DS22263B-page 13
MTD6501C/D/G
DS22263B-page 14
2010-2012 Microchip Technology Inc.
MTD6501C/D/G
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
2010-2012 Microchip Technology Inc.
DS22263B-page 15
MTD6501C/D/G
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
DS22263B-page 16
2010-2012 Microchip Technology Inc.
MTD6501C/D/G
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
2010-2012 Microchip Technology Inc.
DS22263B-page 17
MTD6501C/D/G
NOTES:
DS22263B-page 18
2010-2012 Microchip Technology Inc.
MTD6501C/D/G
APPENDIX A: REVISION HISTORY
Revision B (May 2012)
The following is the list of modifications:
1. Added the MTD6501G device to the family and
related information throughout the document.
2. Updated the Temperature Specifications
table.
3. Sorted the information in Table 2-1.
4. Corrected Frequency Generator output to open
drain in Section 3.2 “Frequency Generator
Function”.
5. Renamed
Section 4.0
“Packaging
Information”. Added Section 4.1 “Package
Marking Information”.
6. Added Product Identification System section.
7. Other minor typographical corrections.
Revision A (September 2010)
• Original data sheet for the MTD6501C/D/G family
of devices.
2010-2012 Microchip Technology Inc.
DS22263B-page 19
MTD6501C/D/G
NOTES:
DS22263B-page 20
2010-2012 Microchip Technology Inc.
MTD6501C/D/G
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
PART NO.
Device
-X
XX
Examples:
a)
b)
c)
d)
e)
f)
MTD6501C-HC1
Tube,
8LD SOP Package
Tape and Reel,
8LD SOP Package
Tube,
10LD MSOP Package
Tape and Reel,
10LD MSOP Package
Tube,
Tube/Tape and Reel Package
MTD6501C-LC1
MTD6501D-HC1
MTD6501D-LC1
MTD6501G-HC1
MTD6501G-LC1
Device
MTD6501C-H:
MTD6501C-L:
3-Phase BLDC Sinusoidal Sensorless Fan Motor
Driver (IOUT maximum 800 mA, PWM 20 kHz) (Tube)
3-Phase BLDC Sinusoidal Sensorless Fan Motor
Driver (IOUT maximum 800 mA, PWM 20 kHz)
(Tape and Reel)
8LD SOP Package
Tape and Reel,
8LD SOP Package
MTD6501D-H:
MTD6501D-L:
3-Phase BLDC Sinusoidal Sensorless Fan Motor
Driver (IOUT maximum 500 mA, PWM 20 kHz, Boost
option) (Tube)
3-Phase BLDC Sinusoidal Sensorless Fan Motor
Driver (IOUT maximum 500 mA, PWM 20 kHz, Boost
option) (Tape and Reel)
MTD6501G-H:
MTD6501G-L:
3-Phase BLDC Sinusoidal Sensorless Fan Motor
Driver (IOUT maximum 800 mA, PWM 23 kHz) (Tube)
3-Phase BLDC Sinusoidal Sensorless Fan Motor
Driver (IOUT maximum 800 mA, PWM 23 kHz)
(Tape and Reel)
Package C1*
=
=
8-Lead Plastic Small Outline – Thermally Enhanced Package
(SOP)
10-Lead Plastic Micro Small Outline Package (MSOP)
* These devices are formerly products of Advanced Silicon
2010-2012 Microchip Technology Inc.
DS22263B-page 21
MTD6501C/D/G
NOTES:
DS22263B-page 22
2010-2012 Microchip Technology Inc.
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
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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, dsPIC,
KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,
32
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MXDEV, MXLAB, SEEVAL 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, chipKIT,
chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net,
dsPICworks, dsSPEAK, ECAN, ECONOMONITOR,
FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP,
Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB,
MPLINK, mTouch, Omniscient Code Generation, PICC,
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UniWinDriver, WiperLock and ZENA are trademarks of
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SQTP is a service mark of Microchip Technology Incorporated
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All other trademarks mentioned herein are property of their
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© 2010-2012, Microchip Technology Incorporated, Printed in
the U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-62076-278-3
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CERTIFIED BY DNV
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and manufacture of development systems is ISO 9001:2000 certified.
== ISO/TS 16949 ==
2010-2012 Microchip Technology Inc.
DS22263B-page 23
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Fax: 49-89-627-144-44
Japan - Osaka
Tel: 81-66-152-7160
Fax: 81-66-152-9310
Atlanta
Duluth, GA
Tel: 678-957-9614
Fax: 678-957-1455
China - Beijing
Tel: 86-10-8569-7000
Fax: 86-10-8528-2104
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Japan - Yokohama
Tel: 81-45-471- 6166
Fax: 81-45-471-6122
China - Chengdu
Tel: 86-28-8665-5511
Fax: 86-28-8665-7889
Boston
Westborough, MA
Tel: 774-760-0087
Fax: 774-760-0088
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
China - Chongqing
Tel: 86-23-8980-9588
Fax: 86-23-8980-9500
Chicago
Itasca, IL
Tel: 630-285-0071
Fax: 630-285-0075
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
Korea - Seoul
China - Hangzhou
Tel: 86-571-2819-3187
Fax: 86-571-2819-3189
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
Cleveland
Independence, OH
Tel: 216-447-0464
Fax: 216-447-0643
China - Hong Kong SAR
Tel: 852-2401-1200
Fax: 852-2401-3431
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
Dallas
Addison, TX
Tel: 972-818-7423
Fax: 972-818-2924
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
Detroit
Farmington Hills, MI
Tel: 248-538-2250
Fax: 248-538-2260
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
Indianapolis
Noblesville, IN
Tel: 317-773-8323
Fax: 317-773-5453
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Taiwan - Hsin Chu
Tel: 886-3-5778-366
Fax: 886-3-5770-955
Los Angeles
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-330-9305
Mission Viejo, CA
Tel: 949-462-9523
Fax: 949-462-9608
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
Santa Clara
Santa Clara, CA
Tel: 408-961-6444
Fax: 408-961-6445
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
Toronto
Mississauga, Ontario,
Canada
China - Xiamen
Tel: 905-673-0699
Fax: 905-673-6509
Tel: 86-592-2388138
Fax: 86-592-2388130
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
11/29/11
DS22263B-page 24
2010-2012 Microchip Technology Inc.
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