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ap3783 document number: ds 37429 rev. 6 - 2 1 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 primary side regulated switching mode power supply controller description the ap3783 is a high performance ac/dc power supply controller for battery charger and adapter applications. the controller regulates the output voltage and current in the primary side by piece - wise pulse frequency modulation (p - pfm) in discontinuous conduction mode (dcm) . the ap3783 provides accurate constant voltage (cv), constant current (cc) and outstanding dynamic performance without requiring an opto - coupler. it also eliminates the need of loop compensation circuitry while maintaining stability. the ap3783 provides v all e y turn - on function , operating frequency jitter function (about 5.5 % frequency change every 256 s) from light to full load range and 3 - segment drive c urrent to improve the power supply em i performance. the ap3783 also has built - in fixed cable voltage drop compensation ( 10% , 7 % and 4% of nominal system output voltage to meet various cables with different length and gauge ) and adjustable line volt age compensation. the ap3783 is packaged in sot26. applications ? adapters/chargers ? led lighting ? standby and auxiliary power supplies pin assignments (top view) sot26 features ? less than 75 mw s tandby p ower c onsumption ? meet efficiency requirement of coc trier2 ? vall e y turn - on to r educe s witching l oss and improve emi ? piece - wise f requency r eduction to e nhance c onversion e fficiency and s uppress a udio n oise ? over v o ltage p rotection (ovp) ? over temperature p rotection (otp) ? short c ircuit p rotection (scp) with hiccup ? 3 - segment drive c urrent for radiative emi suppression ? o perating f requency jitter f unction for conductive emi suppression ? drive mosfet for 5w to 30w b attery c harger/ a dapter a pplications ? sot26 smd p ackage c omply with l evel 3 of ipc/jedec j - std - 033a ? totally lead - free & fully rohs compliant (notes 1 & 2 ) ? halogen and antimony free. green device (note 3) note s : 1 . no purposely added lead. fully eu directive 2002/95/ec (rohs) & 2011/65/eu (rohs 2) compliant. 2 . see http://www.diodes.com/quality/lead_free.html for more information about diodes incorporateds definitions of halogen - and antimony - free, "green" and lead - free . 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 . c s g n d v c c c p c f b d r i 1 2 3 4 5 pin 1 mark 6
ap3783 document number: ds 37429 rev. 6 - 2 2 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 typical applications circuit pin description s p in number pin name function 1 cs the cs is the current sense pin of the ic. t he ic will turn off the power mosfet according to the voltage on the cs pin 2 gnd the ground of the controller 3 vcc t he vcc pin supplies the power for the ic. i n order to get the correct operation of the ic, a capacitor with low esr should be placed as close as possible to the vcc pin 4 fb t he cv and cc regulation are realized based on the voltage sampling of this pin 5 dri output pin to drive external mo sfet 6 cpc a capacitor about 50nf should be connected to this pin. t he voltage of cpc pin is linear to load of the system and it is used for the functions of cable voltage drop compensation and audio noise suppression c i n 2 f r 1 d a t 1 d s f b r f b 1 d r i c p c r c s r f b 2 c s c v c c u 1 g n d v c c c c p c r s t 1 r s t 2 q 1 1 2 v / 1 . 5 a 5 v / 2 a c 2 r 2 c o u t 2 d i n r 0 r 1 c 1 d 1 c o u t 1 c y 1 a p 3 7 8 3 r d u m m y c i n 1 n p n s n a + + + + + l i n r a 1 2 3 4 5 6 d g r g
ap3783 document number: ds 37429 rev. 6 - 2 3 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 functional block diagram r e g u l a t o r & b i a s o v p o c k p o t p p f m u v l o c v _ c t r l p f m d r i v e r r q s r q s f b c s v c c d r i g n d c o n s t a n t v o l t a g e c o n t r o l c a b l e c o m p e n s a t i o n c o n s t a n t c u r r e n t c o n t r o l 0 . 0 5 v v f b _ r e f 1 3 5 2 6 4 c o m p p e a k c u r r e n t c o n t r o l l e b f r e q u e n c y d i t h e r v c s n s e l e c t d y n a m i c r e s p o n s e p r o d y n s h u t d o w n p r e _ s h u t d o w n l i n e c o m p . t o n s t o n s d e t e c t o r o s c u v u v v l o a d v a l l e y o n v l o a d c c _ c t r l o u t p u t s h o r t t o n s c p c t o s c d e t e c t p u l s e v l o a d u v d e t e c t o n d e t e c t o n v l o a d t o s c c p c v c s _ d / l / m / h v c s _ d / l / m / h
ap3783 document number: ds 37429 rev. 6 - 2 4 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 absolute maximum ratings (note 4 ) symbol parameter rating unit v cc supply voltage - 0.3 to 35 v v c s , v c pc voltage on cs, cpc pin - 0.3 to 7 v v fb fb input voltage - 0. 4 to 10 v i source source current from o ut pin internally limited a t j operating junction temperature - 40 to + 150 c t stg storage temperature - 65 to +150 c t lead lead temperature (soldering, 10 sec) +300 c ja thermal resistance ( junction to ambient ) 200 c /w esd esd (human body model) 6000 v esd ( charged device model ) 400 v note 4: stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. these are st ress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating condi tions is not implied. exposure to absolute maximum ratings for extended periods may affect device reliabi lity. electrical characteristics (@ v cc = 1 5v, t a = + 25c , unless othe rwise specified .) symbol parameters conditions min typ max unit startup and uvlo section v th_st startup threshold C 13 15.5 18 v v o pr(min) minimal operating voltage C 6 6.8 7.6 v standby current section i st startup current v cc = v th_st - 1 v before startup 0 0.2 0.6 a i cc _opr operating current static current @ no load 300 450 600 driving output section v gate gate voltage C 12 13 14 v i source_l low driver source current C 1 7.5 20 22.5 m a i source_h high driver source current C 100 110 120 ma v th high/low driver source current threshold voltage C 6 6.5 7 v r sink sink resistance C 5.5 6.5 7.5 ? ?
ap3783 document number: ds 37429 rev. 6 - 2 5 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 electrical characteristics (cont.) (@ v cc = 1 5v, t a = + 25c , unless othe rwise specified .) symbol parameters conditions min typ max unit operating frequency section f s(max) the maximum operating frequency i o(max) (note 5) C C 60 khz t off(max) maximum off time 691 768 845 s t sample _h sample time 57 % to 100% i o(max ) 5.2 5.8 6.4 s t sample _m 34 % to 57 % i o(max) (note 6 ) 4.3 4.8 5.3 s t sample _l 5.5 % to 34 % i o(max) (note 6 ) 2.7 3 3.3 s t sample _d 0% to 5.5 % i o(max) (note 6 ) 1.5 1. 7 1.9 s frequency jitter section v cs / v cs v cs modulation 5.5 % load to 100% i o (max) 4.5 5 5.5 % f mod v cs modulation frequency 5.5 % load to 100% i o(max) 3.6 4 4.4 khz current sense section v cs_h peak current s ense threshold v oltage 57 % to 100% i o(max) 828 900 972 mv v cs_m as above 34 % to 57 % i o(max) (note 6 ) 690 750 810 mv v cs_ l as above 5.5 % to 34 % i o(max) (note 6 ) 414 450 486 mv v cs_d as above 0% to 5.5 % i o(max) (note 6 ) 230 250 270 mv r l ine built - in line compensation r esistor (note 7 ) 245 260 275 ? ? t leb leading edge blanking v cs ( note 6 ) 495 550 605 ns constant voltage section v fb feedback voltage closed l oop t est of v out 3.95 4.01 4.07 v r fb fb pin input resistance v fb =4v 560 700 840 k? v cab l e /v out % cable compensation ratio ap3783a 6 7 8 % ap3783b 3 4 5 % ap3783c 9 10 11 % constant current section ? t ons /t sw secondary winding conduction duty v fb = 3.5 v 0.47 0.5 0.53 C valley - on section t val - on valid off time of valley - on from the end of t ons 14.4 16 17.6 s dy namic section v uv_h under voltage of fb pin for v cs_h C 3.61 3.68 3.75 v protection function section v fb(ovp) over voltage protection at fb pin C 7.1 7.5 7.9 v v cc(ovp) over voltage protection at vcc pin C 28 30 32 v t onp(max) m aximum turn - on time C 13.5 16 18.5 s v fb(scp) short circuit protection v fb @ hiccup 2.45 2.6 2.75 v t scp maximum time under v fb(scp) C 115 128 141 ms t otp shutdown temperature C +144 + 160 +176 c t hys temperature hysteresis C +36 + 40 +44 c notes: 5. the output c onstant - current design value, generally set to 110% to 120% of full load . 6. g uarantee d by design. 7. line compensation voltage on cs reference: aux line 1 fb line ref _ cs v r r r 438 . 0 v ? ? ? ?
ap3783 document number: ds 37429 rev. 6 - 2 6 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 performance characteristics start - up voltage vs. ambient temperature start - up current vs. ambient temperature minimal operating voltage vs. ambient temperature operating current vs. ambient temperature sink resistance vs. ambient temperature sample time vs. ambient temperature -40 -20 0 20 40 60 80 100 120 140 13.0 13.5 14.0 14.5 15.0 15.5 16.0 16.5 17.0 ambient temperature ( o c) start-up voltage (v) -40 -20 0 20 40 60 80 100 120 140 0.0 0.2 0.4 0.6 0.8 1.0 start-up current ( ? a) ambient temperature ( o c) -40 -20 0 20 40 60 80 100 120 140 3 4 5 6 7 8 ambient temperature ( o c) minimun operating voltage (v) -40 -20 0 20 40 60 80 100 120 140 200 250 300 350 400 450 500 ambient temperature ( o c) operating current ( ? a) -40 -20 0 20 40 60 80 100 120 140 0 2 4 6 8 10 12 14 ambient temperature ( o c) sink resistance ( ? ) -40 -20 0 20 40 60 80 100 120 140 2 3 4 5 6 7 ambient temperature ( o c) sample time ( ? s)
ap3783 document number: ds 37429 rev. 6 - 2 7 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 p erformance characteristics (cont.) feedback voltage vs. ambient temperature under voltage of fb pin vs. ambient temperature line compensation resistance input resistance of fb pin vs. ambient temperature vs. ambient temperature -40 -20 0 20 40 60 80 100 120 140 3.5 4.0 4.5 5.0 ambient temperature ( o c) feedback voltage (v) -40 -20 0 20 40 60 80 100 120 140 1 2 3 4 5 6 ambient temperature ( o c) under voltage of feedback pin (v) -40 -20 0 20 40 60 80 100 120 140 150 180 210 240 270 300 330 ambient temperature ( o c) line compensation resistance ( ? ) -40 -20 0 20 40 60 80 100 120 140 500 600 700 800 900 1000 1100 1200 ambient temperature ( o c) input resistance of fb pin (k ? )
ap3783 document number: ds 37429 rev. 6 - 2 8 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 o perati on principle description figure 1 . t ypical a pplication c ircuit of ap 3783 figure 1 is the typical application circuit of ap 3783 , which is a conventional flyback converter with a 3 - winding transfo rmer -- - primary winding (n p ), secondary winding (n s ) and auxiliary winding (n aux ). the auxiliary winding is used for providing vcc supply voltage for ic and sensing the output voltage feedback signal to fb pin. figure 2 shows the typical waveforms which d emonstrate the basic operating principle of ap 3783 application. and the parameters are defined as following. i p --- the primary side current i s --- the secondary side current i pk --- peak value of primary side current i pks --- peak value of secondary side curren t v sec --- the transient voltage at secondary winding v s --- the stable voltage at secondary winding when rectification diode is in conducting status, which equals the sum of output volt age v out and the forward voltage drop of diode v aux --- the transient voltag e at auxiliary winding v a --- the stable voltage at auxiliary winding when rectification diode is in conducting status, which equals the sum of voltage vcc and the forward voltage drop of auxiliary diode t sw --- the period of switching frequency t onp --- the conduction time when primary side switch is on t ons --- the conduction time when secondary side diode is on t off --- the dead time when neither primary side switch nor secondary side diode is on t offs --- the time when secondary side diode is off c i n 2 f r 1 d a t 1 d s f b r f b 1 d r i c p c r c s r f b 2 c s c v c c u 1 g n d v c c c c p c r s t 1 r s t 2 q 1 1 2 v / 1 . 5 a 5 v / 2 a c 2 r 2 c o u t 2 d i n r 0 r 1 c 1 d 1 c o u t 1 c y 1 a p 3 7 8 3 r d u m m y c i n 1 n p n s n a + + + + + l i n r a 1 2 3 4 5 6 d g r g
ap3783 document number: ds 37429 rev. 6 - 2 9 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 o peration principle description (cont.) figure 2 . the operation waveform of flyback psr system for primary - side regulation, the primary current ip(t) is sensed by a current sense resistor r cs ( as shown in figure 1) .the current rises up linearly at a rate of: ( 1 ) as illustrated in figure 2 , when the current ip(t) rises up to i pk , the switch q1 turns off. the constant peak current is given by: ( 2 ) the energy stored in the magnetizing inductance l m each cycle is therefore: ( 3 ) so the power transferring from the input to the output is given by: ( 4 ) where, the f sw is the switching frequency. when the peak current i pk is constant, the output power depends on the switching frequency f sw . constant voltage operation as to constant - voltage (cv) operation mode, the ap 3783 detects t he auxiliary winding voltage at fb pin t o regulate the output voltage. the auxiliary winding voltage is coupled with secondary side winding voltage, so the auxiliary winding v oltage at d1 conduction time is : ( 5 ) where the v d is the diode forward voltage drop. t onp t ons i pk i pks v s i p i s t offs t off v sec v a v aux t sw m in l ) t ( v dt ) t ( dip ? cs cs pk r v i ? 2 pk m i l 2 1 eg ? ? ? sw 2 pk m f i l 2 1 p ? ? ? ? ? ? d o s aux aux v v n n v ? ? ?
ap3783 document number: ds 37429 rev. 6 - 2 10 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 o peration principle description (cont.) figure 3 . auxiliary voltage waveform the voltage detection point is at a constant delay time of the d1 on - time. the constant delay time is chang ed with the different primary peak current. the cv loop control function of ap 3783 then generates a d1 off - time to regulate the output voltage. constant current operation the ap 3783 can work in constant - current (cc) mode. figure 2 shows the secondary curr ent waveforms. in cc operation mode, the cc control loop of ap 3783 will keep a fixed proportion between d1 on - time t ons and d1 off - time t offs . the fixed proportion is ( 6 ) the relationship between the output current and secondary peak current i pks is given by: ( 7 ) as to tight coupled primary and secondary winding, the secondary peak current is ( 8 ) thus the output constant - current is given by: ( 9 ) therefore, ap 3783 can realize cc mode operation by constant primary peak curre nt and fixed diode conduction duty cycle. multiple segment constant peak current as to the original pfm psr system, the switching frequency decreases with output current decreasing, which will encounter aud ible noise issue since switching frequency decr ease s to audio freq uency range, about less than 20 k hz. i n order to avoid audible noise issue, ap3783 uses 4 - segment constant primary peak current control method. at constant voltage mode, the current sense threshold voltage is multiple segments with dif ferent loading, as shown in figure 4 , which are v cs _h for high load, v cs _ m for medium load , v cs _ l for light load and v cs _ d for ultra light load. at constant curr ent mode, the peak current is still v cs _h . 0 v s e e e q u a t i o n 5 t o n s t s a m p l e 4 4 t t offs ons ? offs ons ons pks out t t t i 2 1 i ? ? ? ? pk s p pks i n n i ? ? pk s p offs ons ons pk s p out i n n 8 2 t t t i n n 2 1 i ? ? ? ? ? ? ? ?
ap3783 document number: ds 37429 rev. 6 - 2 11 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 o peration principle description (cont.) figure 4 . multiple segment peak current at cv mode it can be seen from figure 4 , with multiple segment peak current control, ap 3783 power system can achieve good audible noise performance. 3 - segment drive current for radiativ e emi suppression when the power switch is turned on, a turn - on spike will occur, that worsens the radiative emi. it is an effective way to decrease drive current before gate voltage gets to miller platform. the ap3783 uses 3 - segment drive current for rad iative emi suppression, as shown in figure 5. w hen gate voltage get s to 6v, the ap3783 drive current switches from low current ( typical: 2 0ma) to high current ( typical: 110 ma). when the gate voltage gets to 10v, the drive current will decrease gradually to 0ma until the gate voltage go es up to the clamp voltage (13v). figure 5 . drive current and gate voltage f s w f u l l l o a d i o 3 8 . 9 k h z 3 4 % 5 7 % 5 . 5 % i o v c s _ r e f 1 2 k h z i o ( m a x ) 2 4 . 5 k h z 6 8 k h z 3 1 . 2 k h z 4 5 k h z 5 0 k h z 5 5 k h z v c s _ l v c s _ h v c s _ m v c s _ d h i g h l o a d m e d i u m l o a d l i g h t l o a d u l t r a l i g h t l o a d g a t e v o l t a g e d r i v e c u r r e n t t 1 0 v 6 . 5 v h i g h d r i v e c u r r e n t = 1 1 0 m a l o w d r i v e c u r r e n t = 2 0 m a 1 3 v m i l l e r p l a t f o r m
ap3783 document number: ds 37429 rev. 6 - 2 12 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 o peration principle description (cont.) leading edge blanking (leb) time when the power switch is turned on, a turn - o n spike will occur on the sense - resistor. to avoid false turn off switch, a leading - edge blanking is built in. during this blanking time, the current sense comparator is disabled and the external power switch cannot be turned off. furthermore, due to multi ple segment peak current design, the required maximum on time t onp changes with different load condition s . therefore the leb time parameter also changes with different load condition s . adjustable line compensation and fixed cable compensation the ap 3783 power system can adjust line compensation by changing the upper resistor at fb pin. t he line compensation capability is increased by decreasing the resistance of the upper fb resistor . cable compensation is fixed in ap 3783 . valley turn - on when the of f time (t off ) is lower than 16 ? s, ap3783 power system can work with valley turn - on. it can reduce mosfet switching on power losses which is result ed from the equivalent output capacitance. at the same time, because of valley turn - on the switching frequency has the random jitter feature, which will be benefit ed for conductive emi performance. and valley turn - on can also reduce the power switch turn - on spike current and then result in the better radiative emi performance. frequency jitter even though the v alley turn on function can lead the random frequency jitter feature, an active frequency ji tter function is added to ap378 3 to ensure the frequency jitter performance in the whole loading condition . by adjusting the v cs_ref with deviation of 5 .0% every 256 s cycle , the active frequ ency jitter can be realize d . short circuit protection (scp) s hort c ircuit p rotection (scp) detection principle is similar to the normal output voltage feedback detection by sensing fb pin voltage . when the detected fb pin voltag e is below v fb(scp) for a duration of about 1 2 8ms, the scp is triggered. t hen the ap3783 enters hiccup mode that the ic immediately shuts down and then restarts , so that the vcc voltage changes between v th_st and uvlo threshold until v fb(scp) condition is removed. as to the normal system startup, the time duration of fb pin voltage below v fb(scp) should be less than 18ms to avoid entering scp mode. but for the output short condition or the output voltage below a certain level, the scp mode will be trigger ed. figure 6 is the ap3783 normal start - up waveform that t he voltage o f fb pin is above v fb(scp) during t scp after v cc gets to the v th_st , which doesn t enter the scp mode. as shown in figure 7, v out is short and t he voltage o f fb pin is lower than v fb(sc p) during t scp , the ap3783 triggers the scp and enter s the hiccup mode . figure 6 . normal start - up v t h _ s t v f b ( s c p ) t s c p v c c v f b v o u t v o u t ( s c p ) 5 v
ap3783 document number: ds 37429 rev. 6 - 2 13 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 o peration principle description (cont.) figure 7 . short circuit protection (scp) and hiccup mo de ovp the ap 3783 includes output over - voltage protection (ovp). if the voltage at fb pin exce eds v fb(ovp) , the a p 3783 immediately shuts down and keeps the internal circuitry enabled to discharge the vcc capacitor to the uvlo turn - off threshold. after th at, the device returns to the start state and a start - up sequence ensues. otp if the junction temperature reaches the thres hold of +16 0 ? c, ap 3783 shuts down immediately. before vcc voltage decrease s to uvlo, if the junction temperature decreases to + 120 ? c, ap 3783 can recover to normal operation. if not, the power system enters restart hiccup mode until the junction temperature decreases b elow + 120 ? c. v t h _ s t v o p r ( m i n ) v f b ( s c p ) t s c p v c c v f b v o u t 0 v
ap3783 document number: ds 37429 rev. 6 - 2 14 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 ordering information package temperature range cable compensation voltage part number marking id packing sot26 - 40 to + 85 ? c 7 % ap3 783 ak6tr - g1 g bz 3000/ tape & reel 4 % ap37 83 bk6tr - g1 g nz 3000/ tape & reel 10% ap3783ck6tr - g1 gpz 3000/ tape & reel marking information (top view) : logo xxx : marking id (see ordering information) xxx a p 3 7 8 3 x x x x x - x x p a c k i n g p a c k a g e t r : t a p e & r e e l k 6 : s o t 2 6 g 1 : g r e e n p r o d u c t n a m e r o h s / g r e e n c a b l e c o m p e n s a t i o n v o l t a g e a : 7 % b : 4 % c : 1 0 %
ap3783 document number: ds 37429 rev. 6 - 2 15 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 package outline dimensions (all d imensions in mm (inch) . ) (1) package t ype: s ot26 2 . 8 2 0 ( 0 . 1 1 1 ) 3 . 1 0 0 ( 0 . 1 2 2 ) 2 . 6 5 0 ( 0 . 1 0 4 ) 3 . 0 0 0 ( 0 . 1 1 8 ) 1 . 5 0 0 ( 0 . 0 5 9 ) 1 . 7 0 0 ( 0 . 0 6 7 ) 0 . 9 5 0 ( 0 . 0 3 7 ) t y p 1 . 8 0 0 ( 0 . 0 7 1 ) 2 . 0 0 0 ( 0 . 0 7 9 ) 0 . 3 0 0 ( 0 . 0 1 2 ) 0 . 5 0 0 ( 0 . 0 2 0 ) 0 . 7 0 0 ( 0 . 0 2 8 ) r e f 0 . 1 0 0 ( 0 . 0 0 4 ) 0 . 2 0 0 ( 0 . 0 0 8 ) 0 8 0 . 2 0 0 ( 0 . 0 0 8 ) 0 . 3 0 0 ( 0 . 0 1 2 ) 0 . 6 0 0 ( 0 . 0 2 4 ) 0 . 0 0 0 ( 0 . 0 0 0 ) 0 . 1 5 0 ( 0 . 0 0 6 ) 0 . 9 0 0 ( 0 . 0 3 5 ) 1 . 3 0 0 ( 0 . 0 5 1 ) 1 . 4 5 0 ( 0 . 0 5 7 ) m a x 1 2 3 4 5 6 p i n 1 m a r k
ap3783 document number: ds 37429 rev. 6 - 2 16 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 suggested pad layout (1) package t ype: s ot26 dimensions z (mm)/(inch) g (mm)/(inch) x (mm)/(inch) y (mm)/(inch) e (mm)/(inch) value 3.600/0.142 1.600/0.063 0.700/ 0.028 1.000/0.039 0.950/0.037 e e g z y x
ap3783 document number: ds 37429 rev. 6 - 2 17 of 17 www.diodes.com december 2015 ? diodes incorporated ap3783 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 fitn ess for a particular purpose (and their 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 described herein. diodes incorporated does not assume any lia bility 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 of others. any customer or user of this document or pro ducts 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 website, harmless against all damages. diodes incorpora ted does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales chann el. should customers purchase or use diodes incorporated products for any unintended or unauthorized application, customers shall i ndemnify 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 death associated with such unintended or unauthorized ap plication. 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. th is document is written in english but may be translated into multiple languages for reference. only the english version of t his document is the final and determinative format released by diodes incorporated. life support diodes incorporated products are specifically not authorized for use as critical components in life support devices or systems 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 labeling can be reasonably expected to result in signifi cant 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 support device or to affect its safety or effectiveness. c ustomers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support de vices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety - related requireme nts 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 incorporated and its representatives against any damages arising out of the use of diodes incorporated products in such safety - critical, life support devices or systems. copyright ? 201 5 , diodes incorporated www.di odes.com

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