TC670 [MICROCHIP]
Tiny Predictive Fan Failure Detector; 微小的预测风扇故障检测
| 型号： | TC670 |
| 厂家： | 
MICROCHIP |
| 描述： | Tiny Predictive Fan Failure Detector |
| 文件： | 总12页 (文件大小：470K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TC670
Tiny Predictive Fan Failure Detector
Features
General Description
• Fan Wear-out Detection for 2-Wire Linear
Controlled Fans
The TC670 is an integrated fan speed sensor that
predicts and/or detects fan failure, preventing thermal
damage to systems with cooling fans. When the fan
speed falls below a user specified level, the TC670
asserts an ALERT signal. With this design, a critical
minimum fan speed is determined by the user. The fan
alert level is then set with a resistor divider on the
THRESHOLD pin (Pin 1) of the TC670. When the
minimum fan speed is reached, the ALERT pin (Pin 5)
changes from a digital HIGH to LOW. This failure
detection works with all linear controlled 2-wire fans.
The TC670 eliminates the need for 3-wire fan solutions.
• Replacement System for 3-Wire Fans
• Fan Alert Signal when Fan Speed is below
Programmed Threshold
• CLEAR Capability for Eliminating False Alarm
• Low Operating Current, 90µA (typ.)
• V Range 3.0V to 5.5V
DD
• Available in a 6-Pin SOT-23 Package
Applications
A CLEAR option can be used to reset the ALERT signal,
allowing the flexibility of connecting the ALERT output
of the TC670 with other Alert/FAULT interrupts in the
system. This feature can be implemented so that false
Fan Fault conditions do not initiate system shutdown.
• Protection for Linear Controlled Fans
• Power Supplies
• Industrial Equipment
• PCs and Notebooks
• Data Storage
The TC670 is specified to operate over the full
industrial temperature range of -40°C to +85°C. The
TC670 is offered in a SOT23-6 pin package and
consumes 90µA (typ) during operation. The space
saving package and low power consumption make this
device an ideal choice for systems requiring fan speed
monitoring.
• Data Communications Equipment
• Instrumentation
Device Selection Table
Part Number
Package
Temp. Range
TC670ECH
6-Pin SOT-23
-40°C to +85°C
Typical Application Circuit
Package Type
SOT-23A-6
+5V
ALERT
THRESHOLD
SENSE
1
2
3
6
5
4
LED
4
VDD
GND
ALERT
VDD
R4
0.1
µ
F
+12V
CLEAR
3
5
6
ALERT
CLEAR
From
Microcontroller
R3
DC
FAN
1
CSENSE
THRESHOLD
SENSE
R2
R
SENSE
GND
2
2002 Microchip Technology Inc.
DS21688B-page 1
TC670
Stresses above those listed under “Absolute Maximum Rat-
ings” may cause permanent damage to the device. These are
stress ratings only and functional operation of the device at
these or any other conditions above those indicated in the
operation sections of the specifications is not implied. Expo-
sure to Absolute Maximum Rating conditions for extended
periods may affect device reliability.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
VDD...................................................................................6.0V
All inputs and outputs w.r.t. .....(GND − 0.3V) to (VDD + 0.3V)
Difference Input voltage ...................................... IVDD - GND
Output Short Circuit Current ..................................continuous
Current at Input Pin ................................................... +/-2 mA
Current at Output Pin .............................................. +/-25 mA
Junction Temperature, TJ ............................................. 150°C
ESD protection on all pins..................................................≥ 4 kV
Operating Temperature Range........................-40°C to +85°C
Storage Temperature Range.........................-55°C to +150°C
TC670 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise specified, all limits are specified at +25°C, VDD = 3.0V to 5.5V, CLEAR = Low.
Boldface type specifications apply for temperature range of -40°C to +85°C
Symbol
Parameters
Min
Typ
Max
Unit
Conditions
Power Supply:
VDD
Supply Voltage
Supply Current
3.0
—
—
5.5
V
IDD
90
150
µA
CLEAR Input:
VIH
CLEAR Logic Input High Level
CLEAR Logic Input Low Level
0.8VDD
—
—
—
V
V
VIL
—
0.2VDD
SENSE Input:
VTH(SENSE)
RSENSE
SENSE Input Level Threshold Voltage
SENSE Input Resistance
—
—
124
50
—
—
mV
kΩ
THRESHOLD Input:
THRESHOLD Input Voltage Minimum
—
—
0.0
2.4
100
—
—
—
V
V
THRESHOLD Input Voltage Maximum
THRESHOLD Input Resistance
—
—
MΩ
%
(1)
ALERTACC Programmed Fan Speed Alert Accuracy
ALERT Output:
-10
+10
VDD = 3.0V
VLOW
ALERT Output Low Voltage
ALERT Output Delay Time
—
—
—
0.3
—
V
ISINK = 2.5 mA
tDELAY
176
ms
Note 1:
The TC670 will operate properly over the entire power supply range of 3.0V to 5.5V. As VDD varies from 3.0V, accuracy will degrade
based on the percentage of VDD as shown in Section 3.0.
TEMPERATURE SPECIFICATIONS
Electrical Characteristics: Unless otherwise specified, all limits are specified for -40°C to +85°C and VDD = 3.0V to 5.5V
Symbol
Parameters
Min
Typ
Max
Unit
Conditions
Temperature Ranges:
TA
TA
Specified Temperature Range
Operating Temperature Range
-40
-40
—
—
+85
+85
°C
°C
Thermal Package Resistances:
θJA
Thermal Resistance, 6L-SOT-23
—
230
—
°C/W
DS21688B-page 2
2002 Microchip Technology Inc.
TC670
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Symbol
Pin No.
(6-Pin SOT-23)
Description
1
THRESHOLD Analog Input used to set Fan ALERT Threshold Voltage. Input range = 0.0V to
2.4V.
2
3
GND
Ground Terminal.
CLEAR
Digital Input. Active High. The ALERT Output is cleared when a high level signal is
applied to this input.
4
5
VDD
Power Supply Input, 3.0V to 5.5V.
ALERT
Digital (Open Drain) Output, active low. This pin goes low to indicate an alert
condition when the fan speed at the SENSE pin reaches the alert threshold
applied on the THRESHOLD pin.
6
SENSE
Analog Input. Current spikes are detected at this pin as the fan excitation signal
transitions from high to low and low to high.
2002 Microchip Technology Inc.
DS21688B-page 3
TC670
3.0
TYPICAL PERFORMANCE CHARACTERISTICS
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.
Supply Current I
vs. Supply Voltage (V
)
DD
DD
vs.Temperature (T )
A
ALERT
ACC
13000
vs. Fan Speed vs. Temperature
115
110
105
100
95
12000
11000
10000
9000
8000
7000
6000
5000
4000
3000
T
= -40˚C
A
T
= +25˚C
= +90˚C
A
T
A
90
85
V
= 3.0V
DD
80
75
70
-10.0 -8.0 -6.0 -4.0 -2.0 0.0 2.0 4.0 6.0 8.0 10.0
ALERT (%)
ACC
5.1
5.4
5.7
6.0
4.5
SUPPLY VOLTAGE (V)
4.8
2.7
3.0
3.3
3.6
3.9
4.2
Alert Output Delay (T
Power Supply Voltage (V
) vs.
DELAY
THRESHOLD Voltage vs. Fan Speed vs. Supply Voltage (V
)
DD
)
DD
15000
177
176
175
174
173
172
171
170
169
168
14000
13000
12000
11000
10000
9000
8000
7000
6000
5000
4000
3000
2000
1000
V
= 3.6V
DD
V
= 3.3V
DD
V
= 3.0V
DD
V
= 5.5V
V
= 2.7V
DD
DD
V
= 5.0V
DD
0
0.00
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.5
3.0
3.5
4.0
4.5
5.0
THRESHOLD VOLTAGE (V)
POWER SUPPLY VOLTAGE (V
)
DD
CLEAR Pin HIGH to ALERT pin HIGH
Timing Diagram
ALERT V
vs. ALERT I
SINK
LOW
V
= 5.0V
160
140
120
100
80
DD
V
= 3.6V
DD
V
= 3.0V
DD
= 2.7V
V
DD
60
40
V
= 5.5V
4
DD
20
0
0.5
1
1.5
2
2.5
3
3.5
4.5
ALERT I
SINK
(mA)
DS21688B-page 4
2002 Microchip Technology Inc.
TC670
FIGURE 4-2:
TYPICAL APPLICATION
CIRCUIT
4.0
DETAILED DESCRIPTION
The TC670 is an integrated fan speed sensor that
predicts/detects fan failure, consequently preventing
thermal damage to systems with cooling fans. When
the fan speed falls below a user programmed threshold
level, the TC670 asserts an ALERT signal. This
threshold is set with an external resistor divider
network.
VDD = +5V
ALERT
LED
4
VDD
R4
FIGURE 4-1:
TC670 BLOCK DIAGRAM
0.1
µ
F
+12V
CLEAR
3
5
6
ALERT
From
R3
Microcontroller
DC
FAN
VDD
1
Vthreshold
CSENSE
THRESHOLD
SENSE
CLEAR
THRESHOLD
R2
RSENSE
ALERT
GND
2
Logic
R
2
---------------------
V
= V
THRESHOLD
DD
R
SENSE
+ R
2
3
Frequency to
50kΩ
Voltage
GND
Note: This typical application circuit uses an LED to indicate that a
fan failure has occurred.
124mV
Bandgap
Oscillator
4.1
SENSE Input
As shown in Figure 4-2, the SENSE input (Pin 6) is
As shown in Figure 4-1, the TC670 senses the fan
pulses and internally converts those pulses from a
frequency into an analog voltage. This voltage is then
compared with a DC voltage present on the THRESH-
OLD pin. If the converted frequency-to-voltage value
from the fan’s pulses falls below the THRESHOLD
voltage, a FAULT signal is asserted through the ALERT
pin (active LOW).
connected through a sensing capacitor (C
). A
SENSE
low value current sensing resistor (R
) is also
SENSE
connected to the low side of the fan to the ground return
leg of the fan. During normal fan operation, commuta-
tion occurs as each pole of the fan is energized. This
causes brief interruptions in the fan current, seen as
pulses across the sense resistor.
These short rapid changes in fan current cause a
corresponding dV/dt voltage across the sense resistor
as well as a corresponding dI/dt current across the
In a 3.0V system, the external fan alert level on the
THRESHOLD pin can be designed from 0.0V (stalled
fan) and up to 2.4V (for 13,000 RPM) to cover most of
the common fan speeds. This failure detection system
works with linear controlled 2-wire fans and eliminates
the need for 3-wire fans. The TC670 can work with 3-
wire fans as well either by using the SENSE circuit or
by directly sensing the RPM output from the 3rd wire.
sense capacitor. The current across C
is termi-
SENSE
nated with the internal 50kΩ input resistance at the
SENSE pin of the TC670. When positive going fan
pulses at the SENSE input are greater than 124mV
(typ) the TC670 latches in those voltage spikes. This
124mV (typ) SENSE input built-in threshold reduces
false triggering errors caused by extraneous noise
pulses associated with a running fan. The presence
and frequency of these pulses is a direct indication of
fan operation and fan speed.
A CLEAR pin is provided to allow the user to reset the
ALERT pin status back to a HIGH state. This CLEAR
option also allows the flexibility of connecting the
ALERT output of the TC670 with other Alert/FAULT
interrupts in the system without having a risk of a
system shutdown due to false Fan Fault condition.
2002 Microchip Technology Inc.
DS21688B-page 5
TC670
The design of the proper input SENSE circuitry is a
4.2.1
THRESHOLD CALIBRATION USING
FAN’S FULL SCALE SPEED
matter of scaling R
to provide the necessary
SENSE
amount of gain and proper selection of the sensing
capacitor. The following table (Table 4-1) lists some
The fan should first be run at full speed. At full speed
the THRESHOLD voltage level should be adjusted until
the ALERT output is asserted. With this full scale value
of the THRESHOLD voltage, the value can be scaled
down to the Fan Fault speed as a percentage of the full
speed. For example, if the fan full speed THRESHOLD
voltage is 1.5V, then the Fan Fault THRESHOLD
voltage at 30% of full speed would be 30% x 1.5V =
0.45V.
recommended values for R
according to the
SENSE
nominal operating current of the fan. Please note that
the current draw specified by the fan manufacturer may
not be the fan’s nominal operating current, but a worst-
case rating. If the fan current falls between two of the
values listed, it is recommended that the higher value
resistor is used.
TABLE 4-1:
RECOMMENDED VALUES
FOR R PER FIGURE 4-2
4.2.2
THRESHOLD CALIBRATION USING
FAN’S MINIMUM ALLOWABLE
SPEED ESTIMATE
SENSE
Nominal Fan Current
(mA)
R
(Ω)
SENSE
For a more exact Fan Fault trip point, the user can run
the fan at its minimum allowed speed. At this speed, the
THRESHOLD voltage can be adjusted until the ALERT
output is asserted.
100
200
300
400
500
600
4.7
2.4
1.8
1.3
1.0
0.8
4.3
CLEAR Input
The CLEAR input allows the user to reset the ALERT
pin to a high status. This is an active HIGH input.
Consequently, as long as CLEAR is HIGH, ALERT will
always be HIGH as well. To allow ALERT to operate
correctly CLEAR must be held LOW. This feature can
be implemented so that false Fan Fault conditions do
not initiate system shutdown.
A
C
0.1µF ceramic capacitor is recommended for
. Smaller capacitor values will require larger
SENSE
sense resistors whereas larger capacitors are more
expensive and occupy more board space.
4.2
THRESHOLD Input
4.4
ALERT Output
The voltage at the THRESHOLD input sets the
equivalent minimum allowable fan speed for the appli-
cation. As shown in Section 3.0 typical performance
curves, the relationship between the THRESHOLD
voltage and minimum fan speed is also power supply
and temperature dependant.
The ALERT output is an open drain output capable of
sinking 2.5mA (typ). The ALERT output is asserted
whenever the detected fan speed equals or falls below
the equivalent voltage set at the THRESHOLD pin. The
ALERT output is only deactivated once the CLEAR pin
is brought to a HIGH state. Although the absolute
maximum output current of this pin is 25mA, it is
recommended that this current sinking into the ALERT
Output does not exceed 20mA.
All the values for the THRESHOLD voltage that are
shown in these graphs represent typical numbers and
might not be optimized for all fans in all applications. To
ensure accurate fan speed monitoring of a specific fan
in a specific application, the user must perform a one-
time correlation check with the prototype.
4.5
Power Supply Input, VDD
To assure proper operation of the TC670 in a noisy
environment where the fans are running, the V pin
There are two techniques that can be used to calibrate
the system. One approach is to find the fan’s full scale
capability and mathematically estimate the minimum
acceptable speed of the fan. A second technique is to
identify the fan’s minimum speed and calibrate the
THRESHOLD voltage accordingly.
DD
(Pin 4) must be decoupled with a 0.1µF capacitor as
shown in Figure 4-1. This capacitor should be located
as close to the TC670 V pin as possible as well being
DD
promptly terminated to the ground plane. A Ceramic
capacitor is recommended.
4.6
Ground Terminal, GND
The GND pin (Pin 2) of the TC670 should be connected
directly to the analog ground plane of the circuit board.
Care should be taken in circuit layout to keep this pin
away from switching signals, such as the fan excitation
signals in order to avoid false signals on the SENSE
pin.
DS21688B-page 6
2002 Microchip Technology Inc.
TC670
5.0
PACKAGE INFORMATION
5.1
Package Marking Information
6-Pin SOT-23A (EIAJ SC-74) Device
3
4
2
1
5
6
1 & 2 = part number code + temperature range and
voltage
Part Number
TC670ECH
Code
3 = year and quarter code
4 = lot ID number
2002 Microchip Technology Inc.
DS21688B-page 7
TC670
5.2
Taping Form
Component Taping Orientation for 6-Pin SOT-23A (EIAJ SC-74) Devices
User Direction of Feed
Device
Marking
W
PIN 1
P
Standard Reel Component Orientation
For TR Suffix Device
(Mark Right Side Up)
Carrier Tape, Number of Components Per Reel and Reel Size
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
6-Pin SOT-23A
8 mm
4 mm
3000
7 in
5.3
Package Dimensions
SOT-23A-6
.075 (1.90)
REF.
.069 (1.75)
.059 (1.50)
.122 (3.10)
.098 (2.50)
.020 (0.50)
.014 (0.35)
.037 (0.95)
REF.
.118 (3.00)
.110 (2.80)
.057 (1.45)
.035 (0.90)
.008 (0.20)
.004 (0.09)
10° MAX.
.006 (0.15)
.000 (0.00)
.024 (0.60)
.004 (0.10)
Dimensions: inches (mm)
DS21688B-page 8
2002 Microchip Technology Inc.
TC670
SALES AND SUPPORT
Data Sheets
Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom-
mended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following:
1. Your local Microchip sales office
2. The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277
3. The Microchip Worldwide Site (www.microchip.com)
Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using.
New Customer Notification System
Register on our web site (www.microchip.com/cn) to receive the most current information on our products.
2002 Microchip Technology Inc.
DS21688B-page 9
TC670
NOTES:
DS21688B-page 10
2002 Microchip Technology Inc.
TC670
Information contained in this publication regarding device
applications and the like is intended through suggestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Microchip Technology Incorporated with respect
to the accuracy or use of such information, or infringement of
patents or other intellectual property rights arising from such
use or otherwise. Use of Microchip’s products as critical com-
ponents in life support systems is not authorized except with
express written approval by Microchip. No licenses are con-
veyed, implicitly or otherwise, under any intellectual property
rights.
Trademarks
The Microchip name and logo, the Microchip logo, FilterLab,
KEELOQ, microID, MPLAB, PIC, PICmicro, PICMASTER,
PICSTART, PRO MATE, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip Tech-
nology Incorporated in the U.S.A. and other countries.
dsPIC, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,
In-Circuit Serial Programming, ICSP, ICEPIC, microPort,
Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM,
MXDEV, PICC, PICDEM, PICDEM.net, rfPIC, Select Mode
and Total Endurance are trademarks of Microchip Technology
Incorporated in the U.S.A.
Serialized Quick Turn Programming (SQTP) is a service mark
of Microchip Technology Incorporated in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2002, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received QS-9000 quality system
certification for its worldwide headquarters,
design and wafer fabrication facilities in
Chandler and Tempe, Arizona in July 1999
and Mountain View, California in March 2002.
The Company’s quality system processes and
procedures are QS-9000 compliant for its
PICmicro® 8-bit MCUs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals,
non-volatile memory and analog products. In
addition, Microchip’s quality system for the
design and manufacture of development
systems is ISO 9001 certified.
2002 Microchip Technology Inc.
DS21688B-page 11
WORLDWIDE SALES AND SERVICE
Japan
AMERICAS
ASIA/PACIFIC
Microchip Technology Japan K.K.
Benex S-1 6F
3-18-20, Shinyokohama
Kohoku-Ku, Yokohama-shi
Kanagawa, 222-0033, Japan
Tel: 81-45-471- 6166 Fax: 81-45-471-6122
Corporate Office
Australia
2355 West Chandler Blvd.
Microchip Technology Australia Pty Ltd
Suite 22, 41 Rawson Street
Epping 2121, NSW
Chandler, AZ 85224-6199
Tel: 480-792-7200 Fax: 480-792-7277
Technical Support: 480-792-7627
Web Address: http://www.microchip.com
Australia
Tel: 61-2-9868-6733 Fax: 61-2-9868-6755
Korea
Rocky Mountain
China - Beijing
Microchip Technology Korea
168-1, Youngbo Bldg. 3 Floor
Samsung-Dong, Kangnam-Ku
Seoul, Korea 135-882
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7966 Fax: 480-792-7456
Microchip Technology Consulting (Shanghai)
Co., Ltd., Beijing Liaison Office
Unit 915
Bei Hai Wan Tai Bldg.
Atlanta
500 Sugar Mill Road, Suite 200B
Atlanta, GA 30350
Tel: 770-640-0034 Fax: 770-640-0307
Boston
2 Lan Drive, Suite 120
Westford, MA 01886
Tel: 978-692-3848 Fax: 978-692-3821
Tel: 82-2-554-7200 Fax: 82-2-558-5934
Singapore
Microchip Technology Singapore Pte Ltd.
200 Middle Road
#07-02 Prime Centre
No. 6 Chaoyangmen Beidajie
Beijing, 100027, No. China
Tel: 86-10-85282100 Fax: 86-10-85282104
China - Chengdu
Microchip Technology Consulting (Shanghai)
Co., Ltd., Chengdu Liaison Office
Rm. 2401, 24th Floor,
Ming Xing Financial Tower
No. 88 TIDU Street
Singapore, 188980
Tel: 65-6334-8870 Fax: 65-6334-8850
Taiwan
Microchip Technology Taiwan
11F-3, No. 207
Tung Hua North Road
Taipei, 105, Taiwan
Tel: 886-2-2717-7175 Fax: 886-2-2545-0139
Chicago
333 Pierce Road, Suite 180
Itasca, IL 60143
Chengdu 610016, China
Tel: 86-28-86766200 Fax: 86-28-86766599
Tel: 630-285-0071 Fax: 630-285-0075
China - Fuzhou
Dallas
Microchip Technology Consulting (Shanghai)
Co., Ltd., Fuzhou Liaison Office
Unit 28F, World Trade Plaza
No. 71 Wusi Road
Fuzhou 350001, China
4570 Westgrove Drive, Suite 160
Addison, TX 75001
EUROPE
Denmark
Microchip Technology Nordic ApS
Regus Business Centre
Lautrup hoj 1-3
Ballerup DK-2750 Denmark
Tel: 45 4420 9895 Fax: 45 4420 9910
Tel: 972-818-7423 Fax: 972-818-2924
Detroit
Tri-Atria Office Building
32255 Northwestern Highway, Suite 190
Farmington Hills, MI 48334
Tel: 248-538-2250 Fax: 248-538-2260
Tel: 86-591-7503506 Fax: 86-591-7503521
China - Shanghai
Microchip Technology Consulting (Shanghai)
Co., Ltd.
Room 701, Bldg. B
Far East International Plaza
No. 317 Xian Xia Road
Shanghai, 200051
Tel: 86-21-6275-5700 Fax: 86-21-6275-5060
Kokomo
France
2767 S. Albright Road
Kokomo, Indiana 46902
Tel: 765-864-8360 Fax: 765-864-8387
Los Angeles
Microchip Technology SARL
Parc d’Activite du Moulin de Massy
43 Rue du Saule Trapu
Batiment A - ler Etage
91300 Massy, France
Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79
Germany
Microchip Technology GmbH
Gustav-Heinemann Ring 125
D-81739 Munich, Germany
Tel: 49-89-627-144 0 Fax: 49-89-627-144-44
18201 Von Karman, Suite 1090
Irvine, CA 92612
Tel: 949-263-1888 Fax: 949-263-1338
China - Shenzhen
Microchip Technology Consulting (Shanghai)
Co., Ltd., Shenzhen Liaison Office
Rm. 1315, 13/F, Shenzhen Kerry Centre,
Renminnan Lu
Shenzhen 518001, China
Tel: 86-755-2350361 Fax: 86-755-2366086
New York
150 Motor Parkway, Suite 202
Hauppauge, NY 11788
Tel: 631-273-5305 Fax: 631-273-5335
San Jose
Microchip Technology Inc.
2107 North First Street, Suite 590
San Jose, CA 95131
Tel: 408-436-7950 Fax: 408-436-7955
Toronto
China - Hong Kong SAR
Italy
Microchip Technology Hongkong Ltd.
Unit 901-6, Tower 2, Metroplaza
223 Hing Fong Road
Kwai Fong, N.T., Hong Kong
Tel: 852-2401-1200 Fax: 852-2401-3431
Microchip Technology SRL
Centro Direzionale Colleoni
Palazzo Taurus 1 V. Le Colleoni 1
20041 Agrate Brianza
Milan, Italy
6285 Northam Drive, Suite 108
Mississauga, Ontario L4V 1X5, Canada
Tel: 905-673-0699 Fax: 905-673-6509
India
Tel: 39-039-65791-1 Fax: 39-039-6899883
Microchip Technology Inc.
India Liaison Office
United Kingdom
Microchip Ltd.
505 Eskdale Road
Winnersh Triangle
Wokingham
Berkshire, England RG41 5TU
Tel: 44 118 921 5869 Fax: 44-118 921-5820
Divyasree Chambers
1 Floor, Wing A (A3/A4)
No. 11, O’Shaugnessey Road
Bangalore, 560 025, India
Tel: 91-80-2290061 Fax: 91-80-2290062
04/20/02
DS21688B-page 12
2002 Microchip Technology Inc.
相关型号：
TC6815C6AJ
CAPACITOR, TANTALUM, SOLID, POLARIZED, 15 V, 68 uF, THROUGH HOLE MOUNT, AXIAL LEADED
VISHAY
TC6815C6AK
CAPACITOR, TANTALUM, SOLID, POLARIZED, 15 V, 68 uF, THROUGH HOLE MOUNT, AXIAL LEADED
VISHAY
TC6815C6AM
CAPACITOR, TANTALUM, SOLID, POLARIZED, 15 V, 68 uF, THROUGH HOLE MOUNT, AXIAL LEADED
VISHAY
TC6815C6RJ
CAPACITOR, TANTALUM, SOLID, POLARIZED, 15 V, 68 uF, THROUGH HOLE MOUNT, RADIAL LEADED
VISHAY
TC6815C6RK
CAPACITOR, TANTALUM, SOLID, POLARIZED, 15 V, 68 uF, THROUGH HOLE MOUNT, RADIAL LEADED
VISHAY
TC6815C6RM
CAPACITOR, TANTALUM, SOLID, POLARIZED, 15 V, 68 uF, THROUGH HOLE MOUNT, RADIAL LEADED
VISHAY
©2020 ICPDF网 联系我们和版权申明