MTD6505 [MICROCHIP]
Sinusoidal Sensorless 3-Phase Brushless DC Fan Motor Driver; 正弦无传感器三相无刷直流风扇电机驱动器
| 型号： | MTD6505 |
| 厂家： | 
MICROCHIP |
| 描述： | Sinusoidal Sensorless 3-Phase Brushless DC Fan Motor Driver |
| 文件： | 总20页 (文件大小：1729K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MTD6505
Sinusoidal Sensorless 3-Phase Brushless DC Fan Motor Driver
Features
Description
• 180° Sinusoidal Drive, for high efficiency and low
acoustic noise
The MTD6505 device is
a
3-phase full-wave
sensorless driver for brushless DC (BLDC) motors. It
features 180° sinusoidal drive, high torque output and
silent drive. With the adaptive features, parameters and
wide range of power supplies (2V to 5.5V), the
MTD6505 is intended to cover a broad range of motor
characteristics, while requiring minimum external
components. Speed control can be achieved through
either power supply modulation (PSM) or pulse-width
modulation (PWM).
• Position Sensorless BLDC Drivers
(No Hall-effect sensor required)
• Integrated Power Transistors
• Supports 2V to 5.5V Power Supplies
• Programming Resistor (RPROG) setting to fit motor
constant (Km) range from 3.25 mV/Hz to
52 mV/Hz
The compact packaging and the minimal bill-of-
material make the MTD6505 device extremely cost
efficient in fan applications. For example, the CPU
cooling fans in notebook computers require designs
that provide low acoustic noise, low mechanical
vibration, and are highly efficient. The frequency
generator (FG) output enables precision speed control
in closed-loop applications.
• Direction Control:
- Forward direction: connect DIR pin to GND or
leave floating
- Reverse direction: connect DIR pin to VBIAS
or 3V
• Speed Control through Power Supply Modulation
(PSM) and/or Pulse-Width Modulation (PWM)
The MTD6505 device includes Lockup Protection
mode to turn off the output current when the motor is in
a lock condition, with an automatic recovery feature to
restart the fan when the lock condition is removed.
Motor overcurrent limitation and thermal shutdown
protection are included for safety enhanced operations.
• Built-in Frequency Generator (FG Output Signal)
• Built-in Lockup Protection and Automatic
Recovery Circuit
• Built-in Overcurrent Limitation
• Built-in Thermal Shutdown Protection
• Built-in Over Voltage Protection
• No External Tuning Required
The MTD6505 is available in a compact, thermally
enhanced, 3mm x 3mm 10-lead UDFN package.
Package Types
• Available Package
10-Lead 3mm x 3mm UDFN
MTD6505
3x3 UDFN*
Applications
• Notebook CPU Cooling Fans
• 5V 3-Phase BLDC Motors
1
2
3
4
5
10
9
FG
RPROG
VBIAS
PWM
DIR
EP
11
VDD
8
OUT1
OUT2
OUT3
7
6
GND
*Includes Exposed Thermal Pad (EP); see Table 3-1.
2011 Microchip Technology Inc.
DS22281A-page 1
MTD6505
Functional Block Diagram
VBIAS
VDD
FG
VDD
OUT3
OUT2
OUT1
CPU + peripherals
PWM
DIR
GND
Thermal
protection
Short-circuit
protection
Non-volatile
memory
Motor Phase
Detection
Circuit
Overcurrent
protection
Adjustable
Km
RPROG
RPROG sense
DS22281A-page 2
2011 Microchip Technology Inc.
MTD6505
Typical Application
VDD
R1
Km0 Km1,2 Km3
VBIAS VBIAS
FG
10 PWM
1
2
3
4
5
R2
RPROG
VBIAS
DIR
9
VDD
C1
VDD
8
OUT1
OUT2
OUT3
7
C2
GND
6
Recommended External Components for Typical Application
Element
Type/Value
Comment
C1
C2
R1
R2
>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 microcontroller side (FG Pull-Up).
>10 kΩ
3.9 kΩ or 24 kΩ
Select appropriate programming resistor value, see
Table 4-2: Km Settings.
2011 Microchip Technology Inc.
DS22281A-page 3
MTD6505
NOTES:
DS22281A-page 4
2011 Microchip Technology Inc.
MTD6505
† 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
) ...................... -0.7 to +7.0V
DD_MAX
Maximum Output Voltage (V
)............... -0.7 to +7.0V
OUT_MAX
(2)
Note 1: Reference PCB, according to JEDEC
Maximum Output Current (I
)....................1000 mA
OUT_MAX
standard EIA/JESD 51-9.
FG Maximum Output Voltage (V
FG Maximum Output Current (I
) ........... -0.7 to +7.0V
FG_MAX
) ......................5.0 mA
2: IOUT is also internally limited, according to the
FG_MAX
limits
defined
in
the
Electrical
V
Maximum Voltage (V
) ..................... -0.7 to +4.0V
DD_MAX
DD
Characteristics table.
PWM Maximum Voltage (V
) ................ -0.7 to +7.0V
PWM_MAX
(1)
Allowable Power Dissipation (P
).........................1.5W
D_MAX
Max Junction Temperature (T )...................................+150°C
J
ESD protection on all pins2 kV
ELECTRICAL CHARACTERISTICS
Electrical Specifications: Unless otherwise specified, all limits are established for VDD = 5.5V to 2.0V, TA = +25°C
Parameters
Power Supply Voltage
Power Supply Current
Standby Current
Sym
VDD
Min
2
Typ
—
5
Max
5.5
10
Units
V
Conditions
IVDD
—
—
mA
µA
VDD = 5V
IVDD_STB
30
40
PWM = 0V, VDD = 5V
(Standby mode)
OUT1 High Resistance
OUT2 Low Resistance
OUT3 Total Resistance
RON(H)
RON(L)
RON(H+L)
VBIAS
—
0.75
0.75
1.5
—
—
Ω
Ω
IOUT = 0.5A, VDD = 5V
IOUT = 0.5A, VDD = 5V
IOUT = 0.5A, VDD = 5V
VDD = 3.2V to 5.5V
VDD < 3.2V
—
—
—
Ω
VBIAS Internal
Supply Voltage
—
3
—
V
—
V
DD – 0.2
—
V
PWM Input Frequency
PWM Input H Level
PWM Input L Level
fPWM
1
—
100
VDD
0.2*VDD
—
kHz
V
VPWM_H
VPWM_L
RPWM_0
0.55*VDD
—
VDD 4.5V
VDD 4.5V
PWM = 0V
0
—
V
PWM Internal Pull-Up
Resistor
—
266
kΩ
PWM Internal Pull-Up
Resistor
RPWM
—
133
—
kΩ
PWM duty-cycle > 0%
DIR Input H Level
DIR Input L Level
VDIR_H
VDIR_L
RDIR
0.55*VDD
—
—
—
VDD
0.2*VDD
200
V
V
VDD 4.5V
VDD 4.5V
0
DIR Internal Pull-Down
Resistor
100
kΩ
FG Output Pin Low
Level Voltage
VOL_FG
ILH_FG
—
—
—
0.25
10
V
IFG = -1 mA
VFG = 5.5V
FG Output Pin Leakage
Current
-10
µA
Note 1: 750 mA is the standard option for MTD6505. Additional overcurrent protection levels are available upon
request. Please contact factory for different overcurrent protection values.
2: Related to the internal oscillator frequency (see Figure 2-1)
2011 Microchip Technology Inc.
DS22281A-page 5
MTD6505
ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise specified, all limits are established for VDD = 5.5V to 2.0V, TA = +25°C
Parameters
Sym
Min
Typ
Max
Units
Conditions
Lock Protection
Operating Time
TRUN
—
0.5
—
s
Lock Protection Waiting
Time
TWAIT
4.5
5
5.5
s
Note 2
Overcurrent Protection
Overvoltage Protection
IOC_MOT
VOV
—
—
—
750
7.2
—
—
—
mA
V
Short Protection on
High Side
IOC_SW_H
2.57
A
Short Protection on
Low Side
IOC_SW_L
—
-2.83
—
A
Thermal Shutdown
TSD
—
—
170
25
—
—
°C
°C
Thermal Shutdown
Hysteresis
TSD_HYS
Note 1: 750 mA is the standard option for MTD6505. Additional overcurrent protection levels are available upon
request. Please contact factory for different overcurrent protection values.
2: Related to the internal oscillator frequency (see Figure 2-1)
TEMPERATURE SPECIFICATIONS
Electrical Specifications: Unless otherwise specified, all limits are established for VDD = 5.5V to 2.0V, TA = +25°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Temperature Ranges
Operating Temperature
TOPR
TSTG
-40
-55
—
—
+125
+150
°C
°C
Storage Temperature Range
Thermal Package Resistances
Thermal Resistance, 10L-UDFN
JA
—
96.6
—
°C/W
DS22281A-page 6
2011 Microchip Technology Inc.
MTD6505
2.0
TYPICAL PERFORMANCE CURVES
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note: Unless indicated, TA = +25°C, VDD = 5.5V to 2.0V, OUT1, 2, 3 and PWM open.
2.5
2
1
0.5
0
VDD = 5.5V
VDD=5.5V
VDD = 2V
VDD = 2V
-0.5
-1
1.5
1
-1.5
-2
-2.5
-3
-3.5
-4
0.5
0
-4.5
-40 -25 -10
5
20 35 50 65 80 95 110 125
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (C°)
Temperature (C°)
FIGURE 2-1:
Oscillator Frequency
FIGURE 2-4:
Inputs (PWM, DIR) VIL vs.
Deviation vs. Temperature.
Temperature.
3
2.5
2
3.14
3.12
3.1
VDD = 5.5V
3.08
3.06
3.04
3.02
3
1.5
1
VDD = 2V
0.5
0
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (C°)
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (C°)
FIGURE 2-2:
Internal Regulated Voltage
FIGURE 2-5:
Inputs (PWM, DIR) VIH vs.
(VBIAS) vs Temperature.
Temperature.
3.5
3
6
5.5
5
4.5
4
VDD = 2V
2.5
2
3.5
3
1.5
1
2.5
2
1.5
1
VDD = 5.5V
0.5
0
0.5
0
-40 -25 -10
5
20 35 50 65 80 95 110 125
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Temperature (C°)
VDD(V)
FIGURE 2-3:
Internal Regulated Voltage
FIGURE 2-6:
Outputs RON High Side
(VBIAS) vs Supply Voltage (VDD).
Resistance vs. Temperature.
2011 Microchip Technology Inc.
DS22281A-page 7
MTD6505
Note: Unless indicated, TA = +25°C, VDD = 5.5V to 2.0V, OUT1, 2, 3 and PWM open.
6
5.5
5
60
50
40
30
20
10
0
4.5
4
VDD = 5.5V
3.5
3
2.5
2
VDD = 2V
1.5
1
VDD = 2V
VDD = 5.5V
0.5
0
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (C°)
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (C°)
FIGURE 2-7:
Outputs RON Low Side
FIGURE 2-9:
Stand-By Current vs.
Resistance vs. Temperature.
Temperature.
7
6
0
-5
VDD = 5.5V
VDD = 2V
-10
-15
-20
-25
-30
-35
-40
5
4
VDD = 2V
3
2
1
0
VDD = 5.5V
-40 -25 -10
5
20 35 50 65 80 95 110 125
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (C°)
Temperature (C°)
FIGURE 2-8:
Temperature.
Supply Current vs.
FIGURE 2-10:
Temperature.
PWM Pull-Up Current vs.
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
MTD6505 PIN FUNCTION TABLE
Pin
Number
Type
Name
Function
1
2
3
4
5
6
7
8
9
O
I
FG
Motor speed indication output
RPROG Km parameter setting with external resistors, see Table 4-2 for values
—
O
O
—
O
—
I
VBIAS
OUT1
OUT2
GND
OUT3
VDD
Internal regulator output (for decoupling only)
Single phase coil output pin
Single phase coil output pin
Negative voltage supply (ground)
Single phase coil output pin
Positive voltage supply for motor driver
DIR
Motor Rotation Direction
- Forward direction: connect pin to GND or leave floating
- Reverse direction: connect pin to VBIAS
10
11
I
PWM
EP
PWM input signal for speed control
—
Exposed pad (can be connected to the ground plan for better thermal dissipation)
Legend: I = Input; O = Output
DS22281A-page 8
2011 Microchip Technology Inc.
MTD6505
4.3
Frequency Generator Function
4.0
FUNCTIONAL DESCRIPTION
The Frequency Generator output (FG) is a “Hall-effect
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 an out-of-sync situation is
detected by the driver, this output is set to high-
impedance until the motor is restarted. Leave the pin
open when it is not used.
The MTD6505 generates a full-wave signal to drive a
3-phase BLDC motor. High efficiency and low-power
consumption are achieved due to CMOS transistors
and synchronous rectification drive type.
4.1
Speed Control
The rotational speed of the motor can be controlled
either through the PWM digital input signal or by acting
directly on the power supply (VDD). When the PWM
signal is High (or left open), the motor rotates at full
speed. When the PWM signal is low, the IC outputs are
set to high-impedance and the motor is stopped.
4.4
Lockup Protection and Automatic
Restart
If the motor is blocked and cannot rotate freely, a lock-
up protection circuit detects it and disables the driver by
setting its outputs to high-impedance 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). If the motor is still
blocked, a new period of waiting time is started. TWAIT
and TRUN timings are fixed internally, so that no exter-
nal capacitor is required.
By changing the PWM duty cycle, the speed can be
adjusted. Thus, the user has maximum freedom to
choose the PWM system frequency within a wide range
(from 1 kHz to 100 kHz).
Since the PWM pin has an internal pull-up resistor
connected to VDD, it is recommended to drive it
between 0V and High-Z. The PWM driver must be able
to support the pull-up resistor current, in order to drive
the pin. See “PWM Internal Pull-Up Resistor” in
Section 1.0, Electrical Characteristics.
4.5
Overcurrent Protection
The output transistor activation always occurs at a fixed
rate of 30 kHz, which is outside of the range of audible
frequencies.
The motor peak current is limited by the driver to
750 mA (standard value), thus limiting the maximum
power dissipation in the coils.
Note 1: The PWM frequency has no direct affect
on the motor speed and is asynchronous
with the activation of the output
transistors.
4.6
Thermal Shutdown
The MTD6505 device has a thermal protection function
which detects when the die temperature exceeds
TJ = +170°C. When this temperature is reached, the
circuit enters the Thermal Shutdown mode, and the
outputs OUT1, OUT2 and OUT3 are disabled (high-
impedance), avoiding the IC destruction and allowing
the circuit to cool down. When the junction temperature
(TJ) drops below +145°C, normal operation resumes.
Note 2: The standard output frequency is 30 kHz.
A 20 kHz output frequency option is
available upon request.
4.2
Motor Rotation Direction
The current-carrying order of the outputs depends on
the DIR pin state (“Rotation Direction”) and is described
in Table 4-1. The DIR pin is not designed for dynamic
direction change during operation.
The thermal detection circuit has +25°C hysteresis.
Thermal shutdown
TABLE 4-1:
MOTOR ROTATION
DIRECTION OPTIONS
(DIR PIN)
Normal
operation
Rotation
Direction
Outputs Activation
Sequence
DIR Pin State
TJ
+145°
+170°
Connected
to GND
or Floating
Forward OUT1 OUT2 OUT3
FIGURE 4-1:
Hysteresis.
Thermal Protection
Connected
to VBIAS
Reverse OUT3 OUT2 OUT1
2011 Microchip Technology Inc.
DS22281A-page 9
MTD6505
4.7
Internal Voltage Regulator
VBIAS voltage is generated internally and is used to
supply internal logical blocks. The VBIAS 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.
4.8
BEMF Coefficient Setting
Km is the electro-mechanical coupling coefficient of the
motor (also referred to as “motor constant” or “BEMF
constant”). Depending on the conventions in use, the
exact definition of Km and its measurement criteria can
vary among motor manufacturers. To accommodate
various motor applications, the MTD6505 provides
options to facilitate diverse BEMF coefficients.
The MTD6505 defines BEMF coefficient (Km) as the
peak value of the phase-to-phase BEMF voltage,
normalized to the electrical speed of the motor. The
following table offers methods to set the Km value for
the MTD6505 device.
TABLE 4-2:
Km SETTINGS
Km (mV/Hz) Range
Phase-to-Phase
Km
Option
RPROG
Min
Max
Km0
Km1
Km2
Km3
3.25
6.5
13
6.5
13
26
52
GND
24 k
3.9 k
VBIAS
26
The RPROG sensing is actually a sequence that is con-
trolled by the firmware. For any given RPROG, the inter-
nal control block will output the corresponding Km
range.
DS22281A-page 10
2011 Microchip Technology Inc.
MTD6505
5.0
5.1
PACKAGING INFORMATION
Package Marking Information
10-Lead UDFN (3x3x0.5 mm)
Example
AAAD
1141
256
Device
Code
MTD6505T-E/NA
AAAD
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.
)
e3
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.
2011 Microchip Technology Inc.
DS22281A-page 11
MTD6505
DS22281A-page 12
2011 Microchip Technology Inc.
MTD6505
2011 Microchip Technology Inc.
DS22281A-page 13
MTD6505
NOTES:
DS22281A-page 14
2011 Microchip Technology Inc.
MTD6505
APPENDIX A: REVISION HISTORY
Revision A (November 2011)
This is the original release of this document.
2011 Microchip Technology Inc.
DS22281A-page 15
MTD6505
NOTES:
DS22281A-page 16
2011 Microchip Technology Inc.
MTD6505
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
T
-X
/XX
Examples:
a) MTD6505T-E/NA Tape and Reel,
Tape & Reel Temperature Package
Extended Temperature
10LD UDFN Package
Device:
MTD6505T: 3-Phase Brushless DC, Sinusoidal Sensorless
Fan Motor Driver (Tape and Reel)
Temperature Range:
Package:
E
=
=
Extended -40°C to +125°C
NA
Plastic Dual Flat, thermally-enhanced,
3x3x0.5 mm Body (UDFN)
2011 Microchip Technology Inc.
DS22281A-page 17
MTD6505
NOTES:
DS22281A-page 18
2011 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.
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Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,
32
PIC logo, rfPIC and UNI/O are registered trademarks of
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Solutions Company are registered trademarks of Microchip
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dsPICworks, dsSPEAK, ECAN, ECONOMONITOR,
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© 2011, Microchip Technology Incorporated, Printed in the
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Printed on recycled paper.
ISBN: 978-1-61341-788-1
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headquarters, design and wafer fabrication facilities in Chandler and
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2011 Microchip Technology Inc.
DS22281A-page 19
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Asia Pacific Office
Suites 3707-14, 37th Floor
Tower 6, The Gateway
Harbour City, Kowloon
Hong Kong
Tel: 852-2401-1200
Fax: 852-2401-3431
India - Bangalore
Tel: 91-80-3090-4444
Fax: 91-80-3090-4123
Austria - Wels
Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
Denmark - Copenhagen
Tel: 45-4450-2828
Fax: 45-4485-2829
India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
India - Pune
Tel: 91-20-2566-1512
Fax: 91-20-2566-1513
Australia - Sydney
Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
Web Address:
www.microchip.com
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Japan - Yokohama
Tel: 81-45-471- 6166
Fax: 81-45-471-6122
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
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
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 - Seoul
China - Chongqing
Tel: 86-23-8980-9588
Fax: 86-23-8980-9500
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
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
China - Hangzhou
Tel: 86-571-2819-3187
Fax: 86-571-2819-3189
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
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 - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
Dallas
Addison, TX
Tel: 972-818-7423
Fax: 972-818-2924
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
Detroit
Farmington Hills, MI
Tel: 248-538-2250
Fax: 248-538-2260
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Taiwan - Hsin Chu
Tel: 886-3-5778-366
Fax: 886-3-5770-955
Indianapolis
Noblesville, IN
Tel: 317-773-8323
Fax: 317-773-5453
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-330-9305
Los Angeles
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
Mission Viejo, CA
Tel: 949-462-9523
Fax: 949-462-9608
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
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
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
08/02/11
DS22281A-page 20
2011 Microchip Technology Inc.
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