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Version 2.11, May 2005
Datasheet
DS-FanControl-TDA21801
TDA21801
Authors:
E. Chang 1) G. Bernacchia 2) N. Florio 2) R. Pittassi 2) G. Capodivacca 2)
Published by Infineon Technologies AG
http://www.infineon.com/dcdc
1) Villach, Infineon Technologies Austria AG 2) Padova, Infineon Technologies Italia S.r.l.
Power Management & Drive
N e v e r s t o p t h i n k i n g.
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DS-FanControl-TDA21801
Contents:
1. Features ...................................................................................................................... 4 2. Applications................................................................................................................. 4 3. Pinout and Description .................................................................................................. 4 4. General Description...................................................................................................... 5
4.1 Block Diagram..................................................................................................................... 7 4.1.1 External Components Recommendation Values........................................................... 7 4.2 Application Circuit.............................................................................................................. 8 4.3 Absolute Maximum Ratings............................................................................................... 9 4.4 Thermal Characteristic ....................................................................................................... 9 4.5 Operating Condition ......................................................................................................... 10
6 Application Information ................................................................................................ 11
6.1 Filter and Amplifier parameters ....................................................................................... 11 6.2 Oscillator parameters ....................................................................................................... 12 6.2.1 Electrical Characteristic 13
6.3 Digital Control parameters............................................................................................... 15 6.3.1 Function of the speed loop 15
6.4 Power Output Stage parameters ..................................................................................... 15 6.4.1 Electrical Characteristic - Power Output Stage 16
6.5 Speed Value Generation parameters .............................................................................. 17 6.6 NTC input .......................................................................................................................... 19 6.6.1 Electrical Characteristic - NTC 19
6.7 FCin Input.......................................................................................................................... 21 6.7.1 Electrical Characteristic - FCin 22
6.8 Under Voltage Lockout Block .......................................................................................... 23 6.8.1 Electrical Characteristic - Undervoltage Lockout 24 DS-FanControl-TDA21801
FanControl
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6.8 FanM .................................................................................................................................. 25 6.8.1 Electrical Characteristic - FanM Signal 25
7. Outline Dimension: ..................................................................................................... 27
7.1 Footprint Drawing PG-DSO-8........................................................................................... 27
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DS-FanControl-TDA21801
TDA21801 Low Cost Fan Speed Controller
1. Features
* * * * * * Low cost Fan Speed Controller for standard two wires fans No external components for fan speed loop compensation necessary Tacho output signal, FanM for speed measurement Adjustable minimum Fan Speed External control voltage for fan speed setting System Overtemperature Protection for early warning and for system shutdown. PG-DSO-8
2. Applications
* Fan Speed Control for PC Desktop Silver Box Power Supply
Type TDA21801
Package PG-DSO-8
Marking 21801
Ordering Code Q67042-S4257
3. Pinout and Description
TOP VIEW TDA21801 FCin RSin TRSOUT GND 1 2 3 4 8 7 6 5 VDD NTC FanM RC-VCO
N
1 2 3 4 5 6 7 8
Name
FCin RSin TRSOUT GND RC-VCO FanM NTC VDD Sense-resistor input signal
Description
Analog input for external speed control Output to drive the external PNP transistor Ground VCO adjustment for minimum (minimal) frequency and OTP-psu-shut-down. Digital output for speed monitoring. Two pulses per revolution signal. Monitor for OTP-early warning and OTP-psu-shut-down warning. Analog input for temperature sensor (NTC divider) Supply voltage
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4. General Description
The Fan Speed Controller is a fully integrated control with few external components to set up a flexible and low cost application. The device uses the waveform of the current in a standard two-wire fan to detect the speed of revolution and to control it. The current flowing through the fan is sensed by the shunt resistor connected to RSin. For fans with a supply current between 50mA and 400mA, a good value for this resistor is between 0.5 and 1 as the maximum input voltage of RSin for linear operation is 330mV. The Pulse Detector circuit creates one internal trigger pulse at every commutation of the fan motor. The internal trigger pulse will be processed if the current waveform through the motor shows appropriate variations at the commutation. Monitoring and warning signal can be used to check the working condition. Every two internal trigger pulses one is fed to the FanM output to monitor the speed of rotation. The device controls the speed of revolution. The temperature is measured with the NTC thermistor and according to the voltage on the NTC the speed of the fan is set. In Fig.1 the dependence of the fan speed with the temperature is shown (supposing a minimum speed of 1329 rpm). The expression of the minimum VCO frequency @ minimum FAN Speed is given by:
fvco =
16 *n*P 15
n = Fan speed in rpm.
P =number of pole (Fans in use for desktop PC SMPS are normally 4 poles).
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n max = 4540 rpm
n min = 1329 rpm
Fig.1 Fan Speed (rpm) vs. Temperature Consider only the typical curve (blue line)
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4.1 Block Diagram
12V VDD 8 6 FanM
BIAS
3 TRSOUT RBIAS FCin NTC 1 7
Fan M
DAC
Digital Integrator
Logic Unit
RVCO 5 RC-VCO
Speed Value Generator + OTP
In Case of OTP
VCO
1mA VDD 4 GND CVCO
RNTC
RSin
2
Filter Amplifier
Pulse Detection
RRSin
Fig. 2 TDA21801 Block Diagram
4.1.1 External Components Recommendation Values
Name
RBIAS RNTC RRSin RVCO CVCO
Description
Pull up resistor for NTC divider NTC, thermally coupled e.g. with heat sink Shunt Resistor to measure fun current VCO frequency setting resistor and capacitor
Typ. Value
3.6 k 2.2 k 0.5 ~ 1 220K 3.3nF
Tolerance
1% 5% 5% 1% 5%
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4.2 Application Circuit
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4.3 Absolute Maximum Ratings
At Tj = 25 C, unless otherwise specified
Parameter Voltage supplied to `VDD' pin; DC Max voltage on `TRSOUT' pin; DC Max voltage on `FanM' pin; DC Max voltage on `RSin' pin; DC Max voltage on `NTC' pin; DC Max voltage on `FCin' pin; DC Max voltage on `RC-VCO' pin; DC Junction temperature Storage temperature ESD Rating; Human Body Model ESD Rating; Machine Model IEC climatic category; DIN EN 60068-1
Values Symbol Min. Max. Unit
VDD VTRSOUT VFanM VRSin VNTC VFCin VRC-VCO TJ TS
-0.3 -0.3 -0.3 -0.3 -0.3 -0.3 -0.3 -25 -55
13.2 13.2 5.5 5.5 13.2 5.5 13.2 125 150 2 200 kV V C V
55/150/56
4.4 Thermal Characteristic
Parameter Thermal resistance, junction-soldering point (PG-DSO-8) Thermal resistance, junction-ambient (PG-DSO-8)
Values Symbol Min. Typ. Max. Unit
Rthjc-PG-DSO-8 Rthja-PG-DSO-8
95 125
K/W
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4.5 Operating Condition
At Tj = 25 C, unless otherwise specified
Parameter Voltage supplied to `VDD' pin; DC Voltage supplied to `TRSOUT' pin; DC FanM RSin NTC FCin RC-VCO Junction temperature Ambient temperature Operating supply current1
1
Symbol VDD VTRSOUT VFanM VRSin VNTC VFCin VRC-VCO Tj Ta IVDD
Values Min. 10.8 0 0 0 0 0 0 0 0 8 3.3 Typ. 12 Max. 13.2 VDD 5 0.5 VDD 3.5 VDD 100 70 12
UNIT
V
C mA
Without taking into account output current of TRSOUT, FanM and RC-VCO.
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6 Application Information
6.1 Filter and Amplifier parameters
The Fan current is measured by a shunt resistor RRSin and connected to the RSin pin. This is the input signal to the pre-amplifier with a typical gain of 15 and a typical cut off frequency of 20k Hz and -6 dB/ octave. Only an input signal between 40mV and 330mV will be properly detected and processed otherwise the recognition of the pulse cannot be guaranteed. The value of the shunt resistor RRSin has to be chosen according to the current of the fan. For example with spike current of 400mA a shunt resistor of typically 0.68 should be used. At typical operating condition.
Parameter
Symbol
Conditions
Values Min. Typ. Max. 14.7 15 20 0 4 15.3
UNIT
Gain Cutoff frequency RSin pin source current
GRSin FFA IRsin
Verified by Design Verified by Design VRSin= 100m V
kHz uA
R3 VRSin VR1
14R R Ib I1 R + _ I2 14R
VREF Rf VOUT` R2
+ _
D
VOUT C
Fig. 3 Analog front end Block Diagram
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6.2 Oscillator
The technology of oscillator is similar to the industrial standard 555-timer, with control voltage to increase frequency by a factor of up to 3.4. The external timing resistor, RVCO and capacitor, CVCO set the minimum frequency of Voltage Controlled Oscillator. The minimum Fan Speed can be adjusted in the range from 750 to 4000 rpm. With tolerance of 3% at rated speed of 1322 rpm, VDD=12V and 25C (without external components' tolerance), RC-VCO is switched to continuous VDD-output-voltage with open collector output stage if OTP-condition is detected at NTC input. Typical source current up to VDD-5V is 1mA. For this function the anode of a diode can be connected to RC-VCO and the cathode with the 5V input of an external Power-Good circuit. In the case of no OTP the oscillator works between VSP and VSPH and so the diode will not conduct due to lower voltage at Anode compared to Cathode (=5V-input of PowerGood circuit).
R
C
Fig. 4 OTP Application circuit
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6.2.1 Electrical Characteristic - Oscillator
At typical operating condition.
Parameter
Symbol
Conditions
Values Min. Typ. Max.
Unit
Minimum speed control voltage limit High speed control voltage limit Upper threshold Minimum VCO frequency Minimum VCO frequency Maximum VCO frequency External capacitor VCO sink current VCO source current in OTP condition
Verified by Design (VbD)
Highest VSP voltage, which VSPfmin doesn't change the frequency: f = f min (VbD) Lowest VSP voltage, which VSPfmax produces the maximum frequency: f = f max (VbD) VSPH (VbD) VDD = 12V, Tj=25C, C = 3.3nF, f min0 R= 220k Note 1 VNTC=1.5V 0.42V 3V CVCO I VCO sink I VCO source to have a minimum frequency error better than 5% At Vvco=2V 25C % of VDD % of VDD % of VDD kHz
kHz
kHz
nF mA mA
(1) Parasitic PAD capacitor is typically 2pF. (2) In OTP condition a current generator (MOS current mirror is turned on).
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The control loop regulates the fan rotation to a reference frequency. This reference is provided by the internal voltage controlled oscillator. The basic architecture of the VCO is the standard 555 topology. The minimum frequency setting is fixed by an external RC network. The voltage across C is forced to oscillate between the two thresholds VSPH and VSP. The period of oscillation is given by the expression:
V - VSP TS = Tch arg e + Tdisch arg e = RC ln DD V -V SPH DD
+ 500ns
Discharging the capacitor is achieved through an internal pull-down transistor. The discharge time is constant and very short compared to the RC time constant. The advantage of this topology is to be insensitive to variations on VDD if the thresholds VSP and VSPH are directly derived from the VDD itself
Fig. 5 RC-VCO Valley Voltage At Minimum and Maximum Frequency
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6.3 Digital Control parameters
6.3.1 Function of the speed loop
The VCO sets the length of the FanM pulse (TFanM = 16*Tvco). The length of this pulse is fixed for fixed VCO frequency. The speed loop tries to keep the FanM duty cycle of 12.5% stable. For fixed VCO frequency this means that the fan speed is stable. If the VCO frequency is increased, the FanM pulse length TFanM is decreased, so with the previous fan speed the duty cycle is lower than 12.5%. The speed loop then increases the fan speed to achieve 12.5% duty cycle. This happens by reducing TRSOUT. If the duty cycle is too high, this means the FanM frequency and fan speed is too high, the TRSOUT output is increasing (voltage across fan is decreasing). If the duty cycle is too low, this means the FanM frequency and fan speed is too low, the TRSOUT output is decreasing (voltage across fan is increasing). At power-on and every time the fan is turned on starting from not rotating condition the applied voltage on TRSOUT is 6.8V referenced to VDD.
6.4 Power Output Stage parameters
The output of the DAC is amplified to the output TRSOUT. The power output stage is connected with an external transistor to control the fan. There is an intentional internal coupling of fast VDD supply voltage variations to the output TRSOUT to keep the voltage across the fan stable. The ratio between supply variations and voltage variations across VDDTRSOUT is expressed as PSRR in the table below.
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6.4.1 Electrical Characteristic - Power Output Stage
At typical operating condition.
Parameter
Symbol
Conditions
Values Min. Typ. Max.
Unit
Output saturation voltage Maximum output voltage Startup Voltage Negative slew rate for minimum VCO speed Positive slew rate Output sink current Power Supply Rejection Ratio
3Negative
VTRSsat VTRSmax VTRSstart
Isink = 20m A VDD-1 TRSOUT to VDD voltage 6.46 6.8
0.4 VDD 7.28
V V V
Slrn_fn01 Slrp Isink PSRR
FVCO = fn = 5.160k Hz 3*Slrn VTRSOUT = 1 V TRSOUT refered to VDD; Freq=20k Hz 30 -20
-1.17 3*Slrn 50 -40 3*Slrn
V/s mA dB
slew rate meaning decreasing of the VTRSout and increasing of the voltage across the fan.
Value defined in order to have a stable global loop
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6.5 Speed Value Generation parameters
This block generates the lower threshold for the oscillator: increasing the lower threshold the frequency of the VCO is increased as well. This threshold is given by the highest value of the NTC amplifier output, FCin amplifier output and VSPn min and it is limited to VSPn max. For VDD=12V and typical values following limits are valid: VFCin < 2.9% VDD: fan stops if the voltage at NTC is higher than 9% of VDD. If the voltage of the NTC decreases below 9% of VDD, the speed of the VCO is controlled by the voltage at the NTC pin. When the NTC increase back (in case of decreasing temperature) the VCO is controlled by the NTC up to 10% of VDD. If the `NTC' input voltage is increased above 10% of VDD, the fan is turned off again. 2.9% VDD < VFCin < 7.5% VDD: fan speed is controlled only by NTC (If the pin FCin is open, the open pin voltage is VFC open = 5.4% VDD typical) 7.5% VDD < VFCin: VCO and fan speed are controlled by the highest between NTC amplified output or FCin amplified output. VFCin > 23% VDD: VCO oscillator is forced to work at max speed
Fig. 6 FAN speed vs. NTC pin voltage (FCin < 2.9% of VDD)
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n max
n min0
Fig. 7 FAN speed vs. temperature (FCin < 2.9% of VDD)
Fig. 8 FAN speed vs. NTC pin voltage (2.9% of VDD FanControl
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6.6 NTC input
The analog input for NTC divider gives speed information to the VCO (as indicated before) and detects two over temperature conditions for RC-VCO output and FanM output and TRSOUT output: a) OTP-early-warning condition
This condition is detected, if the NTC input goes below VNTC_EW (with a certain hysteresis VHyst_EW). In this case the FanM signal will be inverted to give a warning signal to the PC-system that the power supply is becoming too hot and soon might be switched off. Normally the FanM signal has a duty cycle of 12.5% or lower. In the case of OTP-early-warning condition this duty cycle will switch to 87.5% or higher. This can be easily detected by the PC-system. b) OTP-psu-shut-down condition
This condition is detected, if the NTC input goes below VNTC_OT (with a certain hysteresis VHyst_OT). In this case actions will be started to shut down the Power supply via the RC-VCO pin, also to switch FanM to High-level and TRSOUT to Low-level. OTP and Early warning output are filtered and delayed before they become active.
6.6.1 Electrical Characteristic - NTC
At typical operating condition.
Parameter
Symbol
Conditions
Values Min. 0 Typ. Max. VDD 10 9 10.2 9.2
UNIT
Input voltage range Fan Off NTC voltage Fan On NTC voltage Early warning temperature detection level. Early warning temperature detection hysteresis. Overtemperature detection level Overtemperature detection hysteresis Voltage gain
VNTC VNTC_FanOff VNTC_FanOff VNTC_EW Rising Falling Voltage falling
V
9.8 8.8 4.685
4.785 4.885 % of
VHyst_EW
To be added to the VNTC_EW
0.19
0.25
0.29
VDD
VNTC_OT VHyst_OT GNTC
Voltage falling To be added to the VNTC_OT without external resistor - VbD
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4.075 0.19 -5.2
4.175 4.275 0.25 -5 0.29 -4.8
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DS-FanControl-TDA21801
Input resistance OTP and Early Warning delay
Verified by Design (VbD)
RNTC Td OTP-EW
26.3
40 10.4
51.4
k us
Fig. 9 Amplification of the NTC input signal
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6.7 FCin Input
It is an analog input for external speed control. It gives speed information to the VCO and detects fan off condition. If no external voltage source is connected, an internal resistor divider fixes the voltage level at 5.4 % of VDD. FCin signal is processed in order to make the compare the FCin signal with the NTC one. See Fig. 9
Fig. 10 NTC and FCin signal processing
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Fig. 11 FAN speeds vs. FCin pin voltage (FCin falling and NTC >10% of VDD)
6.7.1 Electrical Characteristic - FCin
At typical operating condition.
Parameter
Symbol
CONDITIONS
Values Min. 2.32 0.3 6 20.7 5.1 100 Typ. Max. 2.9 0.4 7.5 23 5.4 160 3.48 0.5 9 25.3 5.7
UNIT
OFF voltage limit OFF voltage limit Hysteresis Voltage limit for minimum speed Voltage limit for maximum speed Open pin voltage Input resistance
VFCoff VFCoff-Hyst VFCmin VFCmax VFC open RFC
Voltage Falling To be added to the VFCoff
% of VDD
k
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6.8 Under Voltage Lockout Block
At the power ON/OFF, until the VDD is below 3V the FanM, RC-VCO and TRSOUT pins are all set up to high impedance state (oscillation and OTP warning not allowed). When VDD is crossing between 3 and 7V, FanM is switched to Low level, OTP is still not activated and TRSOUT pulled up to VDD.
12V
V DD
7V 3.6V 3V 1.2V
Lockout condition Reset Condition
TRSOUT
RC -VCO FanM
- FanM - RC-VCO - TRSOUT
Low or high impedance OTP not activate High impedance
- FanM - RC - TRSOUT
Low or high impedance OTP not activat High impedance
Fig.12 Power Up main waveforms transitory
V
12V
DD
6.5V 3.6V 3V
TRSOUT RC - VCO
FanM
1.2V
Reset Condition
- FanM - RC-VCO - TRSout At low level OTP not activate High impedance
Lockout condition
- FanM - RC-VCO - TRSout Low or High Impedance OTP not activate High Impedance
Fig.13 Power Down main waveforms transitory
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6.8.1 Electrical Characteristic - Undervoltage Lockout
At typical operating conditions
Parameter
Symbol
CONDITIONS
Values Min. Typ. Max
Unit
Lockout Mode Voltage Limit Reset Mode Limit Voltage for rising transient Hysteresis
VTLOCK
slew rate < 5V/ms
3 V
VRH Hyst -0.46
7 -0.58
8 -0.7
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6.8 FanM
The FanM is a digital output to show the fan speed. The output is an open drain MOSFET with internal pull up and pull down to have same behavior like a 3.3V pull up of 10K. If there is no OTP-condition detected by the analogue-speed-value block, the FanM signal with running fan will have a duty cycle of 12.5% in steady state condition and if the fan is able to run at the loop speed). If the fan is not able to run at the loop speed the duty cycle is lower than 12.5%. The FanM signal is generated to give two pulses per revolution for a four poles fan. Each of the 2 pulses has the same time length of t = 16 / frequency of VCO There are 2 exceptions: a) FanM output with OTP-early-warning condition at NTCin-pin:
This condition is detected, if the NTC input goes below VNTC_EW (with a certain hysteresis VHyst_EW ). In this case the FanM-signal will be inverted to give a warning to the PC-system, that the power supply is becoming too hot and soon might be switched off. In this case the FanM duty cycle will switch to 87.5% or higher. b) FanM output with OTP-psu-shut-down condition at NTCin-pin:
FanM goes to continuous HIGH-position = open Drain MOSFET off. This is a way that an external control system can detect that there is an OTP condition. This signal is a static signal, because the RCVCO pin will also be used as OTP output. This will stop the oscillator.
6.8.1 Electrical Characteristic - FanM Signal
At typical operating conditions
Parameter
Symbol
Conditions
Values Min. Typ. Max.
Unit
Output voltage high Output voltage low Output impedance
VFanM_H VFanM_L RFanM
Generated from VDD=12 V Isink =6m A
26.5
26.8
27.1 0.4
%of VDD V k
6.6
10
12.8
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VNTC ( V )
VHYST_EW VNTC_EW VHYST_OTP VNTC_OTP Time ( sec ) CMP_EW EW CMP_OTP OTP FanM
Fig. 14 Signal of the FanM vs NTC pin voltage
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7. Outline Dimension:
7.1 Footprint Drawing PG-DSO-8
e 1,27 mm
A 5,69 mm
L 1,31 mm
B 0,65 mm
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DS-FanControl-TDA21801
Revision History Datasheet DS-FanControl-TDA21801 Actual Release: V2.11 Page of actual Rel. 13 20 25 Page of prev. Rel. 13 20 25 Add test condition "25C For questions on technology, delivery and prices please contact the Infineon Technologies Offices in Germany or the Infineon Technologies Companies and Representatives worldwide: see the address list on the last page or our webpage at http://www.infineon.com/DCDC
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Edition 2004-09-03
Published by Infineon Technologies AG, St.-Martin-Strasse 53, D-81541 Munchen
(c) Infineon Technologies AG 2004.
All Rights Reserved.
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Attention please! The information herein is given to describe certain components and shall not be considered as warranted characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and charts stated herein. Infineon Technologies is an approved CECC manufacturer. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide (see address list). Warnings Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in life-support devices or systems with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered.
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Singapore
France
Infineon Technologies France SAS 39 - 47, Bd. Ornano 93527 Saint-Denis CEDEX2 T (+33) 1 48 09 72 00 Fax (+33) 1 48 09 72 90
China
Infineon Technologies International Trade ( Shanghai ) Co., Ltd Beijing Representative Office 12th Floor, Quantum Plaza No.27 Zhichun Road, Haidian Distric, Beijing 100083, People's Republic of China T (+86) 10 82 35 61 18 Fax (+86) 10 82 35 54 74 Infineon Technologies Hong Kong Ltd, Hong Kong Office 302 Level 3 Festival Walk 80 Tat Chee Avenue, Kowloon Tong Hong Kong T (+852) 28 32 05 00 Fax (+852) 28 27 97 62 Infineon Technologies International Trade ( Shanghai ) Co., Ltd No.8, Lane 647, Songtao Road Zhangjiang Hi-Tech Park Pudong, Shanghai, China Infineon Technologies International Trade ( Shanghai ) Co., Ltd Shenzhen Office Room 1501-05, Block A Tian An International Building Renmin Nan Road Shenzhen 518001, China T (+86) 7 55 -2 28 91 04 Fax (+86) 7 55 -2 28 02 17
Infineon Technologies Asia Pacific Pte. Ltd. 8 Kallang Sector 349282, Singapore T (+65) 68 40 08 88 Fax (+65) 68 40 xx xx
South Africa
Siemens Components P.O. Box 3438 Halfway House 1685 Gauteng, South Africa T (+27) 11 6 52 20 00 Fax (+27) 11 6 52 26 73
India
Infineon Technologies India Pvt. Ltd. 10th Floor, Discoverer Building International Technology Park Whitefield Road Bangalore 560 066, India T (+91) 80 8 41 00 17/18 Fax (+91) 80 8 41 00 12
Spain
Ireland
Infineon Technologies Ireland Ltd. 69 Fitzwilliam Lane Dublin 2, Ireland T (+35) 31 79 99 500 Fax (+35) 31 79 99 501
Siemens S.A. Division Components Ronda de Europa, 5 28760 Tres Cantos-Madrid T (+34) 91 5 14 71 54 Fax (+34) 91 5 14 70 13
Sweden
Israel
Nisko Ltd. 2A, Habarzel Street Tel Aviv 69710, Isreal T (+9 72)3 -7 65 73 00 Fax (+9 72)3 -7 65 73 33
Infineon Technologies Nordic AB P.O. Box 46 16493 Kista, Sweden T (+46) 8 7 03 59 00 Fax (+46) 8 7 03 59 01
Switzerland
Italy
Infineon Technologies Italy S.r.l. Via Vipiteno 4 20128 Milano, Italy T (+39) 022 52 04 1 Fax (+39) 022 52 04 43 95
Japan
Infineon Technologies Switzerland AG Badenerstrae 623 P.O. Box 1570 8048 Zurich T (+41) 1 4 97 80 40 Fax (+41) 1 4 97 80 50
Germany
Infineon Technologies AG Siemensstrae 31-33 71254 Ditzingen/Stuttgart T (+49) 71 56 -1 79 19 10 Fax (+49) 71 56 -1 79 19 90 Infineon Technologies AG Volklinger Strae 4 40219 Dusseldort T (+49) 2 11 -20 95 49 0 Fax (+49) 2 11 -20 95 49 60 Infineon Technologies AG Naegelsbachstrae 26 91052 Erlangen T (+49) 91 31 97 00 10 Fax (+49) 91 31 97 00 99
Infineon Technologies Japan K.K. Takanawa Park Tower 8F/9f/12F/17F 3-20-14, Higashi-Gotanda Shinagawa-ku Tokyo 141-0022, Japan T (+81) 3 54 49 64 11 Fax (+81) 3 54 49 64 01
Taiwan
Infineon Technologies Taiwan.Ltd. 12F-1, No.3-2 Yuan Qu. St., Nan Kang Software Park, Taipei Taiwan 115, ROC T (+8 86)2-2655 7500 Fax (+8 86)2-2655 7501-8
Korea
Infineon Technologies Korea Co., Ltd.. Room No. 2&3,9th floor Daelim Acrotel Building 467-6 Dokock-Dong. Kangnam-Gu Seoul, Korea 135-971 T (+82) 23 46 00 900 Fax (+82) 23 46 00 901/902
Turkey
Siemens Sanayi ve Ticaret A.S. Yakacik Yolu No.111 34861 Kartal, Istanbul T (+90) 21 64 59 28 51 Fax (+90) 21 64 19 31 90
United Kindom
Infineon Technologies UK.Ltd. Infineon House Fleet Mill Minley Road Fleet, Hampshire GU51 2RD T (+44) 12 52 77 22 00 Fax (+44) 12 52 77 22 01
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