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al1676 document number: ds 38290 rev. 1 - 2 1 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 universal high power factor buck led driver description t he al1676 is a universal ac input (85~277 v ac ), high power factor (pf) and high efficiency buck led driver. the al1676 topology provides accurate constant current (cc) with good line and load regulation, operating at boundary conduction mode (bcm) to ease in emi/emc qualification and testing to meet the latest regulatory laws. the al167 6 single buck stage driver works with a single winding inductor and h igh voltage mosfet included, th erefore, can use fewer external components and create a low bill of material (bom) cost solution. the al1676 has rich protection features to enhance system safety and reliability , including under voltage lock out (uvlo), led open/short, o ver voltage, over current, o ver temperature protection and thermal fold - back function which c an reduce output current when the driver s temperature is higher than the setting value . the al1676 is available for so - 7 package . features ? >90% e fficiency ? universal 85 to 277 v a c input range ? multiple o ptions for i nternal mosfet ? tight output current tolerance : 3 % ? low startup current: 10 0 a ? low operation current: 1 7 0 a (5k h s s witching) ? s ingle w inding i nductor ? inte r nal protections : ? under v oltage lock out (uvlo) ? leading - edge blank ing (leb) ? cycle - by - cycle over current protection (ocp) ? output o pen /short p rotection (ovp/osp) ? thermal fold - back protection (tfp) ? over t emperature p rotection (otp) ? so - 7 p ackage ? totally lead - free & fully r o hs compliant (notes 1 & 2) ? halogen and antimony free . green device (note 3 ) pin assignments (top view) so - 7 applications ? retrofit led lamps ? led t ube ? high voltage dc - dc led driver ? general purpose constant current source note s: 1 . no purposely added lead . fully eu directive 2002/95/ec (r o hs) & 2011/65/eu (r o hs 2) compliant. 2. see http://www.diodes.com/quality/lead_free.html for more information about diodes incorporateds definitions of hal ogen - and antimony - free, "green" and lead - f ree . 3. halogen - and antimony - free "green products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total br + cl) and <1000ppm antimony compounds. v c c r o v p c o m p g n d c s d n c 1 2 3 4 7 6 5
al1676 document number: ds 38290 rev. 1 - 2 2 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 typical applications circuit pin description s pin number p in name function 1 v cc p ower s upply v oltage 2 rovp resistor s et the o pen v oltage 3 comp compensation for c urrent c ontrol 4 gnd ground 5 cs current s ensing 6 nc no c onnection 7 d drain of the i nternal high voltage mosfet functiona l block diagram o u t + r o v p g n d u 1 a l 1 6 7 6 c 5 r 1 a c i n p u t f 1 d b 1 c 1 c o m p v c c r 2 c s d c 4 d 1 l 2 r 4 r 5 r 3 c 2 c 3 v r l 1 n c v c c m a n a g e m e n t f a u l t m a n a g e m e n t u v l o o f f v c c c l a m p o s p o t p o v p v d d s t o p t o f f d e t e c t i o n ( z c d ) v c c o v p o v p d v c c g n d r o v p o s p s t o p r s q 6 - + c o m p g m v r e f s a m p l e a n d h o l d - + 3 5 v o v p _ r e f t o f f v o v p _ r e f v r e f t o f f 4 2 1 7 c s n c d r i v e r s u p p l y c l a m p - + 0 . 8 v o c p
al1676 document number: ds 38290 rev. 1 - 2 3 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 absolute maximum ratings (@ t a = +25c , unless otherwise specified.) ( note 4 ) symbol parameter rating unit v cc power supply voltage 18 v v d voltage on d pin ( al1676 - 20a s7 - 13) 300 v voltage on d pin ( al1 676 - 30a s7 - 13) 300 v voltage on d pin ( al1676 - 10b s7 - 13) 500 v voltage on d pin ( al1676 - 20b s7 - 13) 500 v voltage on d pin ( al1676 - 20c s7 - 13) 600 v voltage on d pin ( al1676 - 4 0 dcs7 - 13) 670 v i d continuous drain current t c = +25 c ( al1676 - 20a s7 - 13) 2.0 a continuous drain current t c = +25 c ( al1676 - 30a s7 - 13) 3.0 a continuous drain current t c = +25 c ( al1676 - 10b s7 - 13) 1.0 a continuous drain current t c = +25 c ( al1676 - 20b s7 - 13) 2.0 a continuous drain current t c = +25 c (al1676 - 20cs7 - 13) 2.0 a conti nuous drain current t c = +25 c (al1676 - 40ds7 - 13) 4.0 a v cs voltage on cs pin - 0.3 to 7 v v rovp voltage on r ovp p in - 0.3 to 7 v t j operating junction temperature - 40 to + 150 c t stg storage temperature - 65 to + 150 c t lead lead temperature (soldering, 1 0 seconds) +260 c p d power dissipation and thermal characteristics ( t a = + 50c ) 0. 8 w ? ja thermal resistance (junction to ambient) ( note 5 ) 123 c/w ? j c ? C note s : 4. stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. these are stres s ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. exposure to absolute maximum ratings for extended periods may affect device reliability. 5. device mounted on 1"x1" fr - 4 substrate pcb, 2oz copper, with minimum recommended pad layout. recommended operating conditions (@ t a = +25c, unless otherwise specified.) symbol parameter min max unit t a ambient temperature (note 6) - 40 + 105 c note 6 : the device can operate normally at + 125 c ambient temperature under the condition that the junction temperature is less than + 150 c .
al1676 document number: ds 38290 rev. 1 - 2 4 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 electrical characteristics (@ t a = +25c, unless otherwise specified.) symbol parameter conditions min typ max unit uvlo v th(st) start up voltage C C 14.5 C v v opr(min) minimal operating voltage after turn on C 8 .5 C v v cc_clamp v cc c lamp v oltage i cc = 1ma C C standby current i st start - up current v cc = v th (st) - 0.5v, before s tart up C C cc (opr) operating current switching frequency at 5khz C C internal high voltage mosfet r ds( on ) drain - source on - state resistance al1676 - 20a s7 - 13 C C 6.5 ? C C C C C C C C 5.5 al1676 - 40ds7 - 13 C C ds continu ous drain - source current al1676 - 20a s7 - 13 C C a al1676 - 30a s7 - 13 C C C C C C C C al1676 - 40ds7 - 13 C C ds drain - source voltage al1676 - 20a s7 - 13 300 C C v al1676 - 30a s7 - 13 300 C C C C C C C C al1676 - 40ds7 - 13 65 0 C C dss drain - source l eakage c urrent al1676 - 20a s7 - 13 C C 1 a al1676 - 30a s7 - 13 C C C C C C C C 1 al1676 - 40ds7 - 13 C C
al1676 document number: ds 38290 rev. 1 - 2 5 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 electrical characteristics (@ t a = +25c, unless otherwise specified.) (cont.) symbol parameter conditions min typ max unit r ovp v r ovp r eference voltage of r ovp p in C C 0. 5 C v current sen se v ref internal r eference voltage C C 0. 400 C v v cs_clamp v cs clamp v oltage C C 0.8 C v t on_min minimum t on C C 550 C ns t on_max m aximum t on C C 29 C s t off _ max maximum t off C C 180 C s t off _ min minimum t off (note 7 ) C C 6 C s error amplifie r gm gm t rans - conductance C C 25 C a/v i source amplifier source current C C 10 C a i sink amplifier sink current C C 9 C a thermal foldback and over temperature protection t reg overheating temperature regulation (note 7 ) C C + 1 50 C c C shutdow n temperature (note s 7, 8 ) C C + 1 7 0 C c note s : 7 . these parameters, although guaranteed by design, are not 100% tested in production. 8 . the device will latch off when otp happen s, recovered after power cycle and device won t operating normally at th is temperature.
al1676 document number: ds 38290 rev. 1 - 2 6 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 performance characteristics (note 9 ) start - up voltage vs. ambient temperature start - up current vs. ambient temperature minimal operating voltage vs. amb ient temperature operating current vs . ambient temperature v ref vs. ambient temperature v rovp r eference vs. ambient temperature -40 -20 0 20 40 60 80 100 120 120 130 140 150 160 170 180 190 operating current ( ? a) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 12.0 12.5 13.0 13.5 14.0 14.5 15.0 15.5 16.0 start-up voltage (v) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 0.20 0.25 0.30 0.35 0.40 0.45 0.50 v ref (v) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 0.30 0.35 0.40 0.45 0.50 0.55 0.60 v rovp reference (v) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 130 140 150 160 170 180 190 start-up current ( ? a) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 minimal operating voltage (v) ambient temperature ( o c)
al1676 document number: ds 38290 rev. 1 - 2 7 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 perform ance characteristics (cont.) (note 9 ) vcc c lamp v oltage vs. ambient temperature v ref vs. ambient temperature note 9 : these electr ical characteristics are tested under dc condition. the ambient te mperature is equal to the junction temperature of the device. -40 -20 0 20 40 60 80 100 120 6 9 12 15 18 21 24 vcc clamp voltage (v) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 140 160 180 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 v ref (v) ambient temperature ( o c)
al1676 document number: ds 38290 rev. 1 - 2 8 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 functional description and application i nformation convertor operation the al1676 is a high efficiency and high power factor buck led driver solution for universal input applica tion based on single winding inductor . i t is available for 6 internal mosfet options (300v/2a, 300v/3a, 500/1a, 500v/2a, 600v/2a, 65 0v/4a) which can help to reduce the overall led driver solution size of the led lamp. t his 6 mosfet options can cover most o f the 3~1 8 w applications. high power factor (pf) is achieved by constant on - time control. c oupled with simple closed loop of constant current control , the al1676 can achieve good line and load regulation. the al1676 adopts source - driver techn ique to decrea se the system operat ing current . it uses a novel method to detect the t off time which helps to get rid of an auxiliary winding for ( v cc supply and ) detecting the t off time, resulting in an extremely low bill material (bom). t he al1676 operates at boundary conduction mode (bcm) which can ease emi design. figure 1 . typical application circuit start - up and s upply voltage before start - up, the vcc capacitor c 3 is charged by the startup resistors (r1, r2) from the high voltage mai ns. w hen the start - up voltage is reached, the al1676 starts switching. d uring normal operation , the vcc supply is provide d by s tart - up resister s ( r1, r2 ) and internal source driver circuit. t he al1676 has an internal vcc clamp voltage (typical 15.5v), whic h is limited by one internal active z ener diode . when vcc voltage drops to below the under voltage lockout (uvlo), switching stop s , the ic can restart when the voltage on vcc pin is exceeding the startup voltage ( v th (st) ). protections under voltage lockou t (uvlo) when the voltage on the vcc pin drops to below v opr(min) , the ic stops switching . t he ic can restart when the voltage on vcc exceeds the startup voltage (v th(st) ) leading - edge blanking (leb) to prevent false detection of the peak current of the in ductor, a blanking time following switch - on is designed. when the internal switch turns on, a short current spike can occur because of the capacitive discharge of the voltage over the drain and source. i t is disregarded during the leb time ( t on_min ). cycle - by - cycle over current protection (ocp) the al1676 has a built - in peak current detector. i t triggers when the voltage on cs pin reaches the peak level v cs_clamp . t he r5 is connected to the cs pin to sense the current of the inductor. t he maximum peak curre nt (i peak(max) ) of the inductor can be calculated as below: ( 1 ) o u t + r o v p g n d u 1 a l 1 6 7 6 c 5 r 1 a c i n p u t f 1 d b 1 c 1 c o m p v c c r 2 c s d c 4 d 1 l 2 r 4 r 5 r 3 c 2 c 3 v r l 1 n c ? ? _ 5 cs clamp peak max v i r ?
al1676 document number: ds 38290 rev. 1 - 2 9 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 functional description and application i nformation (cont.) t he detection circuit is activated after the leb time. w hen the detection circuit sense the cs voltage is higher than 1v, the ic will turn off the switch to limit the output current. i t automatically provides protection for the maximum led current during operation. a propagation delay exists between over current detection and actual source - switch off, so the actual peak current is a little higher than the ocp level set by the r5. over - voltage p rotection and output - open protection (ovp) the al1676 has output open voltage protection when the led is open, which can prevent the output voltage from increas ing to a very high value . this feature can help the system designer to select a smaller volume capacitor. t he output voltage is set by the external resistor r 3 shown in figure 1. w hen led is open, the t off_ovp time can be calculated as : ( 2 ) w here , v ovp is the output open voltage. v cs is the voltage on the cs pin when ovp happens . the output voltage is set by r 3 , and r 3 is calculated as : ( 3 ) w here , v r ovp_ref is the internal r ovp pin 0.5 v s reference , c ref is the internal 6 p f capacitor . o utput - short protection (osp) w hen led is short ed , the device can not detect the t off time, and the device control s the system operati ng at 5 khz low switching frequency. thermal foldback protection (tfp) the al1676 has a therm al foldback function and adopts self - adaptive control method , which can prevent the system from breaking down caused by high temperature. t he overheating temperature is set at +1 50 c typical , when the junction temperature of the ic is higher than +15 0 c ty pical, the device will linearly decrease the internal reference voltage to decrease the output current . as a result of this feature , the device can control the system s output power at high ambient temperature , to control the quantity of heat of the system . this enhances t he safety of the system at high temperature . the thermal foldback waveform is shown below: figure 2 . thermal f oldback w aveform _ 1 r5 cs off ovp ovp lv t v ? ? ? 5 20 1 20 3 _ _ _ r v c l v v c t v r ovp ref ref rovp cs ref ovp off ref rovp ? ? ? ? ? ? ? ? ?
al1676 document number: ds 38290 rev. 1 - 2 10 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 functional description and application i nformation (cont.) over - temperature protection (otp) the al1676 ha s otp protection function . w hen the junction temperature reach es + 1 7 0 c typical , the ic will trigger an over - temperature protection condition which causes the device to shut down and latch. once otp has triggered , the system will resume after the system s in put power supply has been reset and power up . design p arameters setting the c urrent s ense r esistor r 5 i n buck structure , when output is larger than input, no energy will be transfer red to output, this period is called dead zone, and the dead zone angle is . ( 4 ) where, v o is the output voltage . v in _ rms is the rms value of the input volta ge . the al1676 adopt s boundary conduction mode, the output current is calculated as below, ( 5 ) where , i peak is t he peak current of the inductance . t on is the internal mosfet on time . t off is the freewheel diode d1 s conduction time . t delay is typical ly 0. 1 5 s . t he al1676 is a closed loop constant current control, so it has the equation. ( 6 ) where, v ref is the internal reference, typical 0.4v , r5 is the current sense resistor . so we can get the output current equation as below, ( 7 ) i nductance selection ( l 1) i n buck structure , the peak current of the induct or c an be calculate d as below , ( 8 ) _ = sin 2 o in rms v a v ? ? - _ _ 11 (sin( ) ) 2 2 o on off o mean peak on off delay in rms v t t i i dt t t t v ?? ? ? ? ? ? ? ? ? ? ?? ? - _ 1 (sin( ) ) r5 2 o on off ref peak on off delay in rms v t t v i dt t t t v ?? ? ? ? ? ? ? ? ? ? ?? ? _ 1 = 25 ref o mean v i r ? - _ 5 (sin( ) ) 2 ref peak o on off on off delay in rms v i v t t r dt t t t v ?? ? ? ? ? ? ? ? ? ? ?? ?
al1676 document number: ds 38290 rev. 1 - 2 11 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 functional description and application i nformation (cont.) t he al1676 controls the system operat ing at boundary conduction mode which results in its operating frequency in constant. t o set the minim um switching frequency f min at the crest of the minimum ac input. ( 9 ) a ccording to the f araday s l aw of inductio n, the winding number of the inductance can be calculated by: ( 10 ) where , a e is the cor e effective area . b m is the maximum magnetic flux density . t he al1676 has designed the minimum t on time and maximum t on time, the t on_min is about 700ns and the t on_max time is about 29 s. i n buck topology there is the equation v in _ rms - v o =l*i peak /t on . i f t he induc tance is too small, it will make t on smaller than t on_min , the device can not detect the peak current of the system , resulting in incorrect output current. i f the inductance is too large, make t on longer than the t on_max , the system s output current will decrease because of the limit of the t on_max . the al1676 has also the limitation of minimum t off time and maximum t off time, the t off_min time is about 6 s and t off_max time is about 180 s. i n buck topology there is the equation v o =l*i peak /t off . if the inductance is too small, make t off smaller than t off_min , the system will enter dcm mode, and the output current will be incorrect . i f the inductance is too large, make t off longer than t off_max , the system will enter ccm mode, and the output current w ill also be incorrect . so a suitable value of the inductance is very important. c onsider these parameters, two examples of the typical application inductance is recommended as below: s ystem spec i nductance v alue s ystem f requency t on _ min t off 60v/100ma (8 5~265v ac ) 2.2mh 64khz(230 v ac ) 2.4 s (265 v ac ) 12.6 s 42v/150ma (85~265 v ac ) 1.1mh 64khz(230 v ac ) 1.6 s (265 v ac ) 13.5 s recommended a pplications the al1676 integrates different mosfet to adapt different wattage application . t he output current is limite d by the integrated mosfet , and the so - 7 package s heat dissipation capability. t he minimum output voltage is limited by the leb time, and the minimum output voltage is recommended to 20v. t he recommended application is given below: d evice o utput p ower c overage maximum o utput current minimum output voltage al1676 - 20a 1 _ _ ( 2 ) 2 2 in rms o o peak in rms min v v v l i v f ?? ? ?? 2 2 peak l em li n ab ? ? ?
al1676 document number: ds 38290 rev. 1 - 2 12 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 ordering information part number package code package 13 tape and reel quantity part number suffix al1676 - 20a s 7 - 13 s 7 so - 7 40 00/tape & reel - 13 al1676 - 30as7 - 13 s 7 so - 7 40 00/tape & reel - 13 al1676 - 10b s 7 - 13 s 7 so - 7 40 00/tape & reel - 13 al1676 - 20bs7 - 13 s 7 so - 7 40 00/tape & reel - 13 al1676 - 20cs7 - 13 s 7 so - 7 40 0 0/tape & reel - 13 al1676 - 40ds7 - 13 s 7 so - 7 40 00/tape & reel - 13 marking information 2 0 : 2 . 0 a a l 1 6 7 6 C C m o s f e t v o l t a g e c u r r e n t o p t i o n a : 3 0 0 v b : 5 0 0 v c : 6 0 0 v d : 6 5 0 v s 7 : s o - 7 p a c k a g e p a c k i n g 1 3 : 1 3 " t a p e & r e e l 1 0 : 1 . 0 a 3 0 : 3 . 0 a 4 0 : 4 . 0 a 1 6 7 6 - x x x ( t o p v i e w ) y y w w x x p a r t n u m b e r 1 6 7 6 - 2 0 a f o r 2 . 0 a / 3 0 0 v 1 6 7 6 - 3 0 a f o r 3 . 0 a / 3 0 0 v 1 6 7 6 - 1 0 b f o r 1 . 0 a / 5 0 0 v 1 6 7 6 - 2 0 b f o r 2 . 0 a / 5 0 0 v 1 6 7 6 - 2 0 c f o r 2 . 0 a / 6 0 0 v 1 6 7 6 - 4 0 d f o r 4 . 0 a / 6 5 0 v l o g o w w : w e e k : 0 1 ~ 5 2 ; 5 2 y y : y e a r : 1 5 , 1 6 , 1 7 ~ x x : i n t e r n a l c o d e 7 6 5 1 2 3 4 r e p r e s e n t s 5 2 a n d 5 3 w e e k
al1676 document number: ds 38290 rev. 1 - 2 13 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 package outline dimensions (all d imensions in mm . ) (1) package type: so - 7 3 . 8 0 0 ( 0 . 1 5 0 ) 4 . 0 0 0 ( 0 . 1 5 7 ) 1 . 2 7 0 ( 0 . 0 5 0 ) t y p 4 . 7 0 0 ( 0 . 1 8 5 ) 5 . 1 0 0 ( 0 . 2 0 1 ) 0 . 3 3 0 ( 0 . 0 1 3 ) 0 . 5 1 0 ( 0 . 0 2 0 ) 0 . 1 5 0 ( 0 . 0 0 6 ) 0 . 2 5 0 ( 0 . 0 1 0 ) 0 . 0 8 0 ( 0 . 0 0 3 ) 0 . 2 5 0 ( 0 . 0 1 0 ) 1 . 3 5 0 ( 0 . 0 5 3 ) 1 . 7 5 0 ( 0 . 0 6 9 ) 0 . 4 5 0 ( 0 . 0 1 7 ) 0 . 8 0 0 ( 0 . 0 3 1 ) 8 0 5 . 8 0 0 ( 0 . 2 2 8 ) 6 . 2 0 0 ( 0 . 2 4 4 ) 2 . 5 4 ( 0 . 1 0 0 ) t y p 1 . 2 5 0 ( 0 . 0 4 9 ) 1 . 5 0 0 ( 0 . 0 5 9 ) n o t e : e j e c t h o l e , o r i e n t e d h o l e a n d m o l d m a r k i s o p t i o n a l . o p t i o n 2 4 5 0 . 3 5 0 ( 0 . 0 1 4 ) t y p o p t i o n 1
al1676 document number: ds 38290 rev. 1 - 2 14 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 sug gested pad layout (1) package type: so - 7 dimensions z (mm)/(inch) g (mm)/(inch) x (mm)/(inch) y (mm)/(inch) e (mm)/(inch) e 1 (mm)/(inch) value 6.900/0.272 3.900/0.154 0.650/0.026 1.500/0.059 1.270/0.050 2.54 0/0. 100 z g e 1 e x y
al1676 document number: ds 38290 rev. 1 - 2 15 of 15 www.diodes.com february 2016 ? diodes incorporated new product al 167 6 important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this document, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose (and the ir equivalents under the laws of any jurisdiction). diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product descri bed herein. diodes incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does diodes incorporated convey any license unde r its patent or trademark rights, nor the rights o f others. any customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on diod es incorporated web site, harmless against all damages. diodes incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthor ized sales channel. should customers purchase or use diodes incorporated products for any un intended or unauthorized application, customers shall indemnify and hold diodes incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising ou t of, directly or indirectly, any claim of personal injury or d eath associated with such unintended or unauthorized application. products described herein may be covered by one or more united states, international or foreign patents pending. product nam es and markings noted herein may also be covered by one or more united states, international or foreign trademarks. this document is written in english but may be translated into multiple languages for reference. only the english version of this document is the final and determinative format released by diodes incorp orated. life support diodes incorporated products are specifically not authorized for use as critical components in life support devices or system s without the express written approval of the chief executive officer of diodes incorporated. as used herein : a. life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided i n the l abeling can be reasonably expected to result in significant injury to the user. b. a critical component is any component in a life support device or system whose failure to perform can be reasonably expe cted to cause the failure of the life supp ort device or to affect its safety or effectiveness. customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support d evices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety - related requirements concerning their products and any use of diodes incorporated products in such safety - critical, life support devices or systems, notwithstanding any devices - or systems - related information or support that may be provided by diodes incorporated. further, customers must fully indemnify diodes incorpora ted and its representatives against any damages arising out of the use of diodes incorporated products in such safety - crit ical, life support devices or systems. copyright ? 201 6 , diodes incorporated www.diodes.com

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