austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems datasheet is still valid. Contact information: Headquarters: ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 e-Mail: [email protected] Please visit our website at www.ams.com Datasheet AS3490 Highly Efficient 2-6 LEDs Backlight Driver with PWM Input 2 Key Features MHz DCDC Boost converter - Small 4.7µH external coil - Very high system efficiency of 86% (DCDC and current sources combined) - Very low voltage changes on output to avoid acoustic noise on output capacitor even with PWM - Smooth startup even under low duty cycle PWM conditions Three Current sources up to 25mA - Low voltage compliance (150mV) - High side current source to simplify layout and thermal management of the LEDs - Automatically detect and disable failing or not used LEDs to keep efficiency high - Current matching <4% - Current accuracy <7.5% Excellent LED current output ripple <500µA Support DLS (Dynamic Luminance Scaling or DBC) Undervoltage lockout and overcurrent protection Overtemperature protection Available in a tiny WL-CSP package - 3x4 balls, 0.4mm pitch, 1.7x1.4x0.5mm am lc s on A te G nt st il The output of the DCDC converter is used for five current sources connected to up to 6 LEDs. If a current source is not required, it shall be connected to VOUT or GND - the AS3490 detects this condition and disables this current source automatically; this keeps the efficiency of the system constantly high. 2 al id The AS3490 is an inductive highly efficient DCDC boost converter. The DCDC converter operates at a fixed frequency of 2MHz and includes soft startup to allow easy integration into noise sensitive RF systems. A predictable startup is guaranteed even with very low duty cycle PWM input signals. The voltage on the output capacitor is controlled to minimize ripple and to avoid any acoustic effects for low frequency PWM input signals. lv 1 General Description The AS3490 is controlled by one enable input, ON. This input can also be used to connect a PWM input (like DLS or DBC). The AS3490 includes several protection functions like undervoltage lockout, overcurrent and overtemperature. No microvias are required to assemble the AS3490. The AS3490 is available in a space-saving WL-CSP package measuring only 1.7x1.4x0.5mm and operates over the -30ºC to +85ºC temperature range. Figure 1. AS3490 Typical Operating Circuit Display backlight driver for mobile phones, digital cameras, PND and PMPs. ca AS3490 www.austriamicrosystems.com/AS3490 (ptr) Te ch ni 3 Applications 1.2 1 - 18 AS3490 Datasheet - P i n o u t 4 Pinout Pin Assignment AS3490 !"##$ %& '( ! !"#$ %& '( ! Pin Description am lc s on A te G nt st il lv al id Figure 2. Pin Assignments (Top View) AS3490 Table 1. WL-CSP12 Pin Description Pin Number Pin Name Description A1 VIN Positive supply voltage input - connect to supply and make a short connection to input capacitor CVIN ISET External current set resistor, forced to 1.25V in operation - LED current typically 400xISET current LED1 Current source output 1 - controlled by ON A2 A3 ON B2 GND Supply ground - connect to ground supply LED2 Current source output 2 - controlled by ON ni B3 1 Digital input pin - enable input active high for current sources D1...D3 ca B1 GND Supply ground - connect to supply and make a short connection to input capacitor CVIN and CVOUT GND Supply ground - connect to ground supply C3 LED3 Current source output 3 - controlled by ON D1 SW D2 VOUT DCDC converter output - make a short connection to capacitor COUT D3 VOUT Connect directly to Ball D2 C1 Te ch C2 DCDC converter switching node 1. If ON is low low, the AS3490 enters shutdown. www.austriamicrosystems.com/AS3490 1.2 2 - 18 AS3490 Datasheet - A b s o l u t e M a x i m u m R a t i n g s 5 Absolute Maximum Ratings Stresses beyond those listed in Table 2 may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in Table 3, “Electrical Characteristics,” on page 4 is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 2. Absolute Maximum Ratings Min Max Units VIN, ON and ISET to GND -0.3 +7.0 V +0.3 V 11 V +0.3 V internal protection diodes to VOUT +100 +IIN mA Norm: EIA/JESD78 -0.3 SW, LED1...LED3 to VOUT Input Pin Current without causing latchup -100 am lc s on A te G nt st il Continuous Power Dissipation (TA = +70ºC) internal protection diodes to VIN lv ON and ISET to VIN SW, VOUT, LED1...LED3 to GND Comments al id Parameter 1 Continuous power dissipation 870 mW PT at TAMB=70ºC Continuous power dissipation derating factor 11.67 mW/ºC PDERATE ESD HBM ±2000 V Norm: JEDEC JESD22-A114F ESD CDM ±500 V Norm: JEDEC JESD 22-C101E ESD MM ±100 V Norm: JEDEC JESD 22-A115-B +125 ºC +125 ºC 2 Electrostatic Discharge Temperature Ranges and Storage Conditions Junction Temperature Storage Temperature Range -55 Humidity 5 Body Temperature during Soldering Moisture Sensitivity Level (MSL) 85 % Non condensing +260 ºC according to IPC/JEDEC J-STD-020 Represents a max. floor life time of unlimited MSL 1 Te ch ni ca 1. Depending on actual PCB layout and PCB used 2. PDERATE derating factor changes the total continuous power dissipation (PT) if the ambient temperature is not 70ºC. Therefore for e.g. TAMB=85ºC calculate PT at 85ºC = PT - PDERATE * (85ºC - 70ºC) www.austriamicrosystems.com/AS3490 1.2 3 - 18 AS3490 Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s 6 Electrical Characteristics VVIN = +2.5V to +5.5V, TAMB = -30ºC to +85ºC, unless otherwise specified. Typical values are at VVIN = +3.7V, TAMB = +25ºC, unless otherwise specified. Table 3. Electrical Characteristics Symbol Parameter Condition Min Typ 2.5 3.7 Max Unit VVIN Supply Voltage VVIN_REDUC ED Supply Voltage reduced performance not all parameters within specification ISHUTDOWN Shutdown Current ON=0V 0.5 IVIN Operating Current no load, PWM Normal mode 250 TAMB Operating Temperature 2.0 automatically regulated VVOUT_RIPP Voltage VOUT due to LE_PWM PWM signal 25 VVIN+ 0.3V 85 VVOUT _MAX VOUT<7.5V VVIN=3.7V, TAMB = +25ºC, LED mismatch <= 30mV, VLED=3.0V Overall Efficiency ILOAD=50mA V 100 mV mA 86 85 ILOAD=100mA All internal timings are derived from this oscillator Operating Frequency 70 0.0 ILOAD=75mA ºC 140 DCDC not in pulseskip or current limit Load current µA µA am lc s on A te G nt st il Output Voltage VOUT ILOAD V V all other conditions with ON13=ON45 fCLK 5.5 lv -30 DCDC Converter parameters VVOUT 2.3 al id General Operating Conditions 86 % 86 -10% 2.0 +10% MHz Minimum on-time 60 ns MDC Maximum Duty Cycle 90 % RSW_P DCDC Switch SW - VOUT 0.5 RSW_N DCDC Switch SW - GND 0.5 1.2 ms 7.0 V ca tMIN_ON Output voltage soft start tVOUT_START START tPWM_START VOUT startup voltage Startup with PWM Maximum duration between PWM pulses during startup; see Figure 17 on page 11 10 DCDC timeout time if ON=0 for tTIMEOUT, the DCDC is stopped and the AS3490 enters shutdown 29 ch _MAX tTIMEOUT measured from first high signal on ON ni VVOUT_ softstart time 11 12 ms 48 ms 3.9 x2 V Te Current Sources VLED1..3 LED1...LED3 output voltage range 2.6 x2 ILED1..3 LED1...LED3 output current range 0.0 25.0 mA ILED1..3 LED1...LED3 current 1 source accuracy -7.5 +7.5 % www.austriamicrosystems.com/AS3490 ILED1..3 =20mA 1.2 3.3 x2 4 - 18 AS3490 Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s Table 3. Electrical Characteristics (Continued) Parameter Condition Min ILED1..3 LED1...LED3 current source matching ILED1..3 = 20mA -4.0 ILED1..3 LED1...LED3 ripple current BW=10MHz LED1...LED3 2 linearity ILED=20mA, PWM frequency 300Hz MATCH RIPPLE ILED1..3 PWMLIN Max Unit +4.0 % ILED > 5mA 10 % of ILED ILED < 5mA 500 µA PWM>=25/255 -2 25/255> PWM>=1/255 -10 Typ PWM input frequency on pin ON 100 300 ILED1..3 LEAKAGE LED1...LED3 leakage current current source off, TAMB < +50ºC -0.5 0 VILED_COMP LED1...LED3 current source voltage compliance Minimum voltage between pin VOUT and 3 LED1...LED3, ILED<20mA 100 +2 % +10 % 800 Hz +0.5 µA lv fPWM al id Symbol am lc s on A te G nt st il mV Current Reference (pin ISET) VISET ISET voltage 1.25 V ILED2ISET LED current to ISETcurrent 400 A/A Protection Functions (see page 12) VVOUT_MAX VOUT overvoltage protection VVOUT_OPE VOUT open LED detection threshold Voltage level on VOUT where open LED detection is performed VLED_OPEN VVLED1..3 open detection VLED_SHORT V 8.5 8.8 V an open LED is assumed if the voltage on the current source is less than VLED_OPEN and VOUT=VVOUT_OPENLED 92 125 mV VLED1..3 short detection voltage on LED1..3 where a shorted LED is assumed 0.95 tLED_ERROR _DEB_OPEN VLED1..3 open debounce time Open LED detection debounce time 4.8 µs tLED_ERROR _DEB_SHORT VLED1..3 short debounce time Short LED detection debounce time 4 9.0 µs ILIMIT Current Limit for coil LSW (Pin SW) 685 mA TOVTEMP Overtemperature Protection Overtemperature Hysteresis ch ST ni TOVTEMPHY ca 10.0 NLED 8.6 VUVLO Undervoltage Lockout 8.0 510 600 V 144 ºC 5 ºC Junction temperature Falling VVIN 1.8 1.9 2.1 V Rising VVIN VUVLO +0.05 2.2 2.3 V Te Digital Interface VIH High Level Input Voltage 1.07 VVIN V VIL Low Level Input Voltage 0.0 0.68 V RPULLDOWN Pulldown resistor 1.8V on pad 90 250 k 1. Excluding variation of external resistor RISET; voltage difference between any set of drivers less than 200mV www.austriamicrosystems.com/AS3490 1.2 5 - 18 AS3490 Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s Te ch ni ca am lc s on A te G nt st il lv al id 2. Note: It is not recommended to operate the current sources at minimum duty cycle with low LED currents. 3. The dcdc output voltage VOUT is regulated to 150mV above the maximum LED voltage (LED1...LED3) to guarantee proper operation of the current with output voltage ripple and undershoots (e.g. due to PWM or supply voltage changes) 4. The short LED detection debounce time is longer than the open LED detection debounce time to allow the parasitic capacitance of the LED to charge above VLED_SHORT within this time and avoid wrong triggering of short LED detection. www.austriamicrosystems.com/AS3490 1.2 6 - 18 AS3490 Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s 7 Typical Operating Characteristics VBAT = 3.7V, TA = +25ºC (unless otherwise specified). 95 95 90 90 85 85 80 80 75 % al id % Figure 4. LED Efficiency vs. VBAT 75 lv Figure 3. DCDC Efficiency vs. VBAT 70 70 65 65 VLED=7.5V, ILEDs=73.5mA VLED=7.5V, ILEDs=73.5mA 60 am lc s on A te G nt st il 60 VLED=7.5V, ILEDs=49mA VLED=7.5V, ILEDs=49mA 55 55 2,5 2,9 3,3 3,7 4,1 4,5 4,9 2,5 5,3 Figure 5. Efficiency vs. Load Current 95 90 85 ) % ( 80 y c n75 ie c fif 70 E 65 2,9 3,3 3,7 4,1 4,5 4,9 5,3 Input Voltage (V) Input Voltage (V) Figure 6. Startup with PWM, 20% duty cycle LED Efficiency (PLED/PVIN) 60 DCDC Efficiency (PDCDC/PVIN) ca 55 0 25 50 75 ILED(s) (mA) - combined Figure 8. DCDC Switching Waveforms Te ch ni Figure 7. Startup with PWM, 70% duty cycle www.austriamicrosystems.com/AS3490 1.2 7 - 18 AS3490 Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s Figure 10. VIN line transient 10µs (ILOAD=100mA) am lc s on A te G nt st il lv al id Figure 9. Open LED Detection Waveform Figure 12. ILED ripple (ILOAD=100mA) ca Figure 11. VOUT ripple with PWM Figure 13. ILED vs. RISET ni 25 2,050 ILED [mA] 2,025 ch 20 Figure 14. fosc vs.VIN 15 ILED mA Te 2,000 fosc [MHz] 10 1,975 5 -30deg 85deg ILED=VISET/RISET*ILED2ISET 0 0 25 50 75 100 125 25deg 150 175 200 1,950 2,3 RISET [kOhm] www.austriamicrosystems.com/AS3490 2,7 3,1 3,5 3,9 4,3 4,7 5,1 5,5 Input Voltage (V) 1.2 8 - 18 AS3490 Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s Figure 15. Current Error vs. duty cycle (ILED=25mA) 4 3 2 al id error [%] 1 lv 0 -1 0 10 20 30 40 50 60 70 80 90 100 Te ch ni ca am lc s on A te G nt st il PWM duty cycle [%] www.austriamicrosystems.com/AS3490 1.2 9 - 18 AS3490 Datasheet - D e t a i l e d D e s c r i p t i o n 8 Detailed Description The AS3490 is a high performance DCDC step up converter and three current sources in a small WL-CSP12 package. 1 2 The LED configuration is done in up to three strings , each strings using two LEDs in series . This configuration results in excellent application efficiency even using very small external components (capacitors and coil). The device is controlled by ON. A high levels on this input enables the DCDC and the current sources. ON can be used as PWM input to accurately control the LED brightness. 3 al id The target application is to use the AS3490 for highly efficient backlight driver (display and/or keypad backlight). Internal Circuit lv Figure 16. AS3490 internal circuit " ! am lc s on A te G nt st il " & # $% AS3490 ca ni The AS3490 includes a fixed frequency DCDC step-up with accurate startup control. It is enabled by the input pin ON and controls the LED current with five current sources. These input can be used as PWM inputs to control the brightness: Te ch - a high level on ON enables LED1, LED2 and LED3 The current is adjustable by an external resistor RISET. 1. Unused strings shall be connected to VOUT or GND. 2. Single LED strings can be mixed with dual LED strings as long as one string has two LEDs in series - it will reduce application efficiency. 3. Using the PWM inputs, the AS3490 supports DLS, dynamic luminance scaling, also called CABC, content adaptive backlight control or DBC, dynamic backlight control. www.austriamicrosystems.com/AS3490 1.2 10 - 18 AS3490 Datasheet - D e t a i l e d D e s c r i p t i o n Startup In order to avoid inrush-current during startup the supplies are smoothly ramped up according to Figure 17 even under low PWM duty cycle conditions. This allows the easy integration into mobile battery powered systems: Figure 17. Startup Procedure !"# .- /01 al id -+% ')*+ +, am lc s on A te G nt st il lv $%&""" 02 /01 1 )*+ )*+ /01 Open and short LED detection After the startup is finished, the AS3490 continuously monitors open and shorted LEDs. If an open or shorted LED string is detected, this LED string is disabled and the driver continuous its normal operation. The driver is disabled to keep the efficiency of AS3490 for different LED configurations high. The error is cleared once the AS3490 enters shut4 down . Shorted LED After startup is finished, for any LED, enabled by the inputs ON, is below VLED_SHORT, for at least tLED_ERROR_DEB_SHORT, a shorted LED is assumed. Open LED LED outputs (LED1...LED5) which are not used by the application shall be connected permanently to VOUT or GND. The AS3490 detect this condition upon startup and automatically disables the current sources for these LEDs - see Figure 18 and Figure 19, immediately after the rising edged of ON. ca For LEDs, which are open during operation of the device, following procedure of the AS3490 is used for detection: 5 After startup is finished, if the voltage on VOUT=VVOUT_OPENLED and the voltage across any current source, enabled by the inputs ON, is below VLED_OPEN (VOUT-LED1...3), for at least tLED_ERROR_DEB_OPEN, an open LED is assumed. Te ch ni Figure 18 shows the waveform for the detection of a single open LED, Figure 19 for all LEDs open. 4. The error is automatically cleared as the open/short LED error might be temporarily (e.g. bouncing of the connections to the LED) 5. If the current limit of the coil (ILIMIT) is reached before VOUT=VVOUT_OPENLED, an open LED is not detected. www.austriamicrosystems.com/AS3490 1.2 11 - 18 AS3490 Datasheet - D e t a i l e d D e s c r i p t i o n Figure 18. Single Open LED detection ! "#$# %& ( () ,-. "#/ !* !### ! al id !( ( !( ! 0+,-.+-1 &+ lv am lc s on A te G nt st il & !### ( 3 ( "(4(( ( "( ! Figure 19. All LEDs open ') )"* $ %& " '.!/ )"0 ! " # ca )1#'.!/'#!2 ni $+ ,)- $) Protection and Fault Detection Functions ch The protection functions protect the AS3490, its external components and connected LEDs against physical damage. Overvoltage Protection 6 Te The voltage on VOUT is kept below or at VVOUT_MAX under every operating condition . If the voltage on VOUT is at 7 VVOUT_MAX for more than 70ms , the DCDC will shutdown. It can be re-enabled by setting ON to low for more than tTIMEOUT. 6. When reaching VOUT=VVOUT_OPENLED, the open LED detection is performed. 7. The duration can vary from 55ms to 85ms within a single AS3490. www.austriamicrosystems.com/AS3490 1.2 12 - 18 AS3490 Datasheet - D e t a i l e d D e s c r i p t i o n DCDC Inductor Peak Current Limitation To limit the maximum current from the battery, the DCDC converter limits its current through the coil to ILIMIT on a cycle by cycle basis. Overtemperature Protection Supply undervoltage Protection Te ch ni ca am lc s on A te G nt st il lv If the voltage on the pin VIN is or falls below VUVLO, the AS3490 is kept in shutdown. al id The junction temperature of the AS3490 is continuously monitored. If the temperature exceeds TOVTEMP, the DCDC is stopped. The driver is automatically re-enabled once the junction temperature drops below TOVTEMP-TOVTEMPHYST. www.austriamicrosystems.com/AS3490 1.2 13 - 18 AS3490 Datasheet - A p p l i c a t i o n I n f o r m a t i o n 9 Application Information External Components Input Capacitor CVIN Table 4. Recommended Input Capacitor Size Manufacturer X5R 6V3 X5R 6V3 0402 (1.0x0.5x 0.5mm) Murata www.murata.com C TC Code GRM155R60J225ME15 2.2µF +/-20% GRM155R60J155M---D 1.5µF ESR 0402 (1.0x0.5x 0.5mm) JDK105BJ155MVNF Panasonic Matsushita www.panasonic.com am lc s on A te G nt st il X5R lv Rated Voltage Part Number ECJ0MBFJ185V al id Low ESR input capacitors reduce input switching noise and reduce the peak current drawn from the battery. Ceramic capacitors are required for input decoupling and should be located as close to the device as is practical. 0402 (1.0x0.5x 0.5mm) X5R Taiyo Yuden www.taiyo-yuden.com If a different input capacitor is chosen, ensure similar ESR value and at least 0.6µF capacitance at the maximum input supply voltage. Larger capacitor values (C) may be used without limitations. Output Capacitors COUT Low ESR capacitors should be used to minimize VOUT ripple. Multi-layer ceramic capacitors are recommended since they have low ESR and are available in small footprints. The capacitor should be located as close to the device as is practical. X5R dielectric material is recommended due to their ability to maintain capacitance over wide voltage and temperature range. Table 5. Recommended Output Capacitor COUT Part Number TC Code ESR Rated Voltage Size Manufacturer 10µF X5R 120m 10V 0805 (2x1.25x 0.85mm) Murata www.murata.com 10V 0805 (2x1.25x 0.85mm) Taiyo Yuden www.taiyo-yuden.com ca GRM219R61A116UE82L C 10µF X5R ni LDK212BJ106MDNT Te ch If a different output capacitor is chosen, ensure similar ESR values and at least 4.2µF @ 5.6V and maximum 20µF capacitance. www.austriamicrosystems.com/AS3490 1.2 14 - 18 AS3490 Datasheet - A p p l i c a t i o n I n f o r m a t i o n Inductor LSW The fast switching frequency (2MHz) of the AS3490 allows for the use of small SMDs for the external inductor. The 2 inductor should have low DC resistance (DCR) to reduce the I R power losses - high DCR values will reduce efficiency. Table 6. Recommended Inductor L DCR Size Manufacturer LQM2HPN4R7MGC 4.7µH; >2.45µH @ 0.5A 160m 2.5x2.0x0.9mm max height 1.0mm Murata www.murata.com CIG32K1R0SAF 4.57µH; >2.45µH @ 0.5A <300m 2.0x1.25x0.9mm max height 1.0mm Samsung ElectroMechancs www.sem.samsung.co.kr lv al id Part Number If a different inductor is chosen, ensure similar DCR values and at least 2.45µH inductance at maximum peak input current. am lc s on A te G nt st il PCB Layout Guideline The high speed operation requires proper layout for optimum performance. Route the power traces first and try to minimize the area and wire length of the three high frequency/high current loops: Loop1: pin GND - CVIN - LSW - pin SW - pin GND Loop2: pin GND - CVIN - LSW - pin SW - pin VOUT - CVOUT - pin GND At the pin GND a single via (or more vias, which are closely combined) connects to the common ground plane. This via(s) will isolate the DCDC high frequency currents from the common ground (as most high frequency current will flow between Loop1 and Loop2 and will not pass the ground plane) - see the ‘island’ at the two through ground vias in Figure 20: Figure 20. Layout recommendation & ) % & ca ni " # $ AS3490 ! &'( Te ch Note: If component placement rules allow, move all components close to the AS3490 to reduce the area and length of Loop1 and Loop2 www.austriamicrosystems.com/AS3490 1.2 15 - 18 AS3490 Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s 10 Package Drawings and Markings Figure 21. 12pin WL-CSP12 1.7x1.4x0.5mm Marking AS3490 <Code> Note: austriamicrosystems logo AS3490 <Code> Encoded Datecode (4 characters) am lc s on A te G nt st il Line 1: Line 2: Line 3: al id lv Figure 22. 12pin WL-CSP12 1.7x1.4x0.5mm Package Dimensions !"# %&' (&)! ' ' ' ' ' * * * * * + + + ch + $ * + ni + ca ' Te The coplanarity of the balls is 40µm. www.austriamicrosystems.com/AS3490 1.2 16 - 18 AS3490 Datasheet - O r d e r i n g I n f o r m a t i o n 11 Ordering Information The devices are available as the standard products shown in Table 7. Table 7. Ordering Information Description Delivery Form Package AS3490-ZWLT Highly Efficient 2-6 LEDs Backlight Driver with PWM Input Tape & Reel 12-pin WL-CSP (1.7x1.4x0.5mm) RoHS compliant / Pb-Free / Green al id Model Note: All products are RoHS compliant and austriamicrosystems green. Buy our products or get free samples online at ICdirect: http://www.austriamicrosystems.com/ICdirect lv Technical support is found at http://www.austriamicrosystems.com/Technical-Support Note: AS3490-ZWLT am lc s on A te G nt st il For further information and requests, please contact us mailto:[email protected] or find your local distributor at http://www.austriamicrosystems.com/distributor Te ch ni ca AS3490Z Temperature Range: -30ºC - 85ºC WL Wafer Level Chip Scale Package (WL-CSP) 1.7x1.4x0.5mm T Delivery Form: Tape & Reel www.austriamicrosystems.com/AS3490 1.2 17 - 18 AS3490 Datasheet - O r d e r i n g I n f o r m a t i o n Copyrights Copyright © 1997-2012, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. al id All products and companies mentioned are trademarks or registered trademarks of their respective companies. Disclaimer am lc s on A te G nt st il lv Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or lifesustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. ca The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. ni Contact Information ch Headquarters austriamicrosystems AG Te Tobelbaderstrasse 30 Schloss Premstaetten A-8141 Austria Tel: +43 (0) 3136 500 0 Fax: +43 (0) 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com/contact www.austriamicrosystems.com/AS3490 1.2 18 - 18