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al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 1 of 15 www.diodes.com june 2011 ? diodes incorporated new product description the al9910/a high voltage pwm led driver-controller provides an efficient solution for offline high brightness led lamps from rectified line voltages ranging from 85v ac up to 277v ac . the al9910 drives external mosfets at switching frequencies up to 300khz, with the switching frequency determined by a single resistor. the al9910 topology creates a constant current through the leds providing constant light output. the output current is programmed by one external resistor and is ultimately determined by the external mosfet chosen and therefore allows many low current leds to be driven as well as a few high current leds the led brightness can be varied by both linear and pwm dimming using the al9910?s ld and pwm_d pins respectively. the pwm_d input operates with duty ratio of 0-100% and frequency of up to several khz. the al9910 can withstand input voltages up to 500v which makes it very resilient to transients at standard mains voltages. as well as standard so-8 package the al9910 is available in the thermally enhanced so-8ep package. pin assignments so-8 1 2 3 45 6 7 8 (top view) cs gate gnd ld v in rosc v dd pwm_d al9910 so8-ep 1 2 3 45 6 7 8 (top view) cs gate gnd ld v in rosc v dd pwm_d al9910 features ? >90% efficiency ? universal rectified 85 to 277v ac input range ? input voltage up to 500v ? internal voltage regulator removes start-up resistor o 7.5v mosfet drive ? al9910 o 10v mosfet drive ? al9910a ? tighter current sense tolerance: 5% AL9910-5 ? drives led lamps with both high and low current leds ? led brightness control with linear and pwm dimming ? internal thermal protection (otp) ? so-8 and so-8ep in ?green? molding compound ? (no br, sb) with lead free finish/ rohs compliant (note 1) applications ? led offline lamps ? high voltage dc-dc led driver ? signage and decorative led lighting ? back lighting of flat panel displays ? general purpose constant current source notes: 1. eu directive 2002/95/ec (rohs). all applicab le rohs exemptions applied. please visit our website at http://www.diodes.com /products/lead_free.html . typical application circuit r sense al9910/a gate cs ld pwm_d gnd r osc v dd v in v ac in q1 l1 d1 c1 r osc c2 c3 br1 r sense al9910/a gate cs ld pwm_d gnd r osc v dd v in v ac in q1 l1 d1 c1 r osc c2 c3 br1
al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 2 of 15 www.diodes.com june 2011 ? diodes incorporated new product pin descriptions pin name so-8 so-8ep descriptions v in 1 1 input voltage cs 2 2 senses led string and external mosfet switch current gnd 3 3 device ground gate 4 4 drives the gate of the external mosfet switch. pwm_d 5 5 low frequency pwm dimming pin, also enable input. internal 100k ? pull-down to gnd v dd 6 6 internally regulated supply voltage. x 7.5v nominal for al9910 and x 10v nominal for al9910a. can supply up to 1 ma for external circuitr y. a sufficient storage capacitor is used to provide storage when the rectified ac input is near the zero crossing. ld 7 7 linear dimming input. changes the current li mit threshold at current sense comparator and changes the average led current. r osc 8 8 oscillator control. a resistor connected between this pin and ground sets the pwm frequency. the devices can be switched into constant off time (pfm) mode by connecting the external oscillator resistor between r osc pin and the gate of the external mosfet. ep pad n/a ep exposed pad (bottom). connect to gnd directly underneath the package. functional block diagram 250mv ld v dd ldo v in otp pwm_d gnd 7.5/10v osc s ro r osc gate cs 100k v dd v in r sense al9910/al9910a 250mv ld v dd ldo v in otp pwm_d gnd 7.5/10v osc s ro r osc gate cs 100k v dd v in r sense al9910/al9910a
al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 3 of 15 www.diodes.com june 2011 ? diodes incorporated new product absolute maximum ratings (note 2) symbol parameter ratings unit v in(max) maximum input voltage, v in , to gnd -0.5 to +520 v v cs maximum cs input pin voltage rela tive to gnd -0.3 to 0.45 v v ld maximum ld input pin voltage relative to gnd -0.3 to (v dd + 0.3) v v pwm_d maximum pwm_d input pin voltage relative to gnd -0.3 to (v dd + 0.3) v v gate maximum gate pin volt age relative to gnd -0.3 to (v dd + 0.3) v v dd(max) maximum v dd pin voltage relative to gnd 12 v continuous power dissipation (t a = 25 c) so-8 (derate 6.3mw/ c above +25 c) 630 mw so-8ep (derate at 22mw/c above 25c) 2200 mw t j junction temperature range +125 c t st storage temperature range -65 to 150 c esd hbm human body model esd protection (note 3) 1500 v esd mm machine model esd protection (note 3) 300 v notes: 2. stresses above those listed under absolute maximum rati ngs may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above t hose listed in the operational sect ions of this specification i s not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. all voltages are with respect to ground. currents are positive into, negative out of the specified terminal. 3. semiconductor devices are esd sensit ive and may be damaged by exposure to esd events. suitable esd precautions should be ta ken when handling and transporting these devices recommended operating conditions symbol parameter min max unit v indc input dc supply voltage range al9910 15.0 500 v al9910a 20.0 500 t a ambient temperature range -40 85 c v dd maximum recommended voltage applied to v dd pin (note 4) al9910 10 v al9910a 11 v en(lo) pin pwm_d input low voltage 0 1 v v en(hi) pin pwm_d input high voltage 2.4 v dd notes: 4. when using the al9910 in isolated led lamps an auxiliary winding might be used.
al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 4 of 15 www.diodes.com june 2011 ? diodes incorporated new product electrical characteristics (over recommended operating conditions unless otherwise specified - t a = 25c) specifications apply to al9910, al9910a and AL9910-5 unless otherwise specified symbol parameter conditions min typ. max unit i insd shut-down mode supply current pin pwm_d to gnd, v in = v in(min) (note 5) al9910 0.50 1 ma al9910a 0.65 1.2 v dd internally regulated voltage v in = v in(min) ~500v, (note 5) l dd(ext) =0, gate pin open al9910 7.0 7.5 8.0 v al9910a 9.5 10 10.5 i dd(ext) v dd current available for external circuitry v in = v in(min) to 100v (note 5 & 6) 1.0 ma uvlo v dd under voltage lockout threshold v dd rising al9910 6.4 6.7 7 v al9910a 8.4 9 9.6 ? uvlo v dd under voltage lockout hysteresis v dd falling al9910 500 mv al9910a 750 r pwm_d pwm_d pull-down resistance v pwm_d = 5v 150 200 250 k? v cs(hi) current sense threshold voltage t a = -40c to +85c al9910/a 225 250 275 mv AL9910-5 237.5 250 262.5 v gate(hi) gate high output voltage i out = 10ma v dd -0.3 v dd v v gate(lo) gate low output voltage i out = -10ma 0 0.3 v f osc oscillator frequency r osc = 1m ? 20 25 30 khz r osc = 226k ? 80 100 120 d maxhf maximum oscillator pwm duty cycle f pwmhf = 25khz, at gate, cs to gnd. 100 % v ld linear dimming pin voltage range t a = <85c, v in = 20v 0 - 250 mv t blank current sense blanking interval v cs = 0.45v, v ld = v dd 160 250 440 ns t delay delay from cs trip to gate lo v in = 20v, v ld = 0.15, v cs = 0 to 0.22v after t blank 300 ns t rise gate output rise time c gate = 500pf 30 50 ns t fall gate output fall time c gate = 500pf 30 50 ns t sd thermal shut down 150 qc t sdh thermal shut down hysteresis 50 t ja thermal resistance junction-to- ambient so-8 (note 7) 110 qc/w so-8ep (note 8) 66 t jc thermal resistance junction-to- case so-8 (note 7) 22 qc/w so-8ep (note 8) 9 notes: 5. v in(min) for the al9910 is 15v and for the al9910a it is 20v 6. also limited by package power diss ipation limit, whichever is lower. 7. device mounted on fr-4 pcb (25mm x 25mm 1oz copper, minimu m recommended pad layout on top. for better thermal performance, larger copper pad for heat-sink is needed. 8. device mounted on fr-4 pcb (51mm x 51mm 2oz copper, mini mum recommended pad layout on top layer and thermal vias to bottom layer ground plane. for better thermal perform ance, larger copper pad for heat-sink is needed.
al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 5 of 15 www.diodes.com june 2011 ? diodes incorporated new product typical characteristics -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -40 -15 10 35 60 85 ambient temperature (c) change in current sense threshold vs. ambient temperature curr ent sense threshold (m v) 280 300 320 340 360 380 400 420 440 460 -40 -15 10 35 60 85 ambien t temperature ( c) i nput current vs. ambient temperature v = 15v in v = 400v in input current (a) -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1. 5 -40 -15 10 35 60 85 am bient temper ature (c) change in oscillation frequency vs. ambient temperature change in frequency (%) r = 1m osc r = 226k osc 150 200 250 300 350 400 450 85 105 125 145 165 185 205 225 245 265 input voltage (v ) 180ma led driver short circuit out put current vs. i nput voltage rms short circuit output current (ma) i = 180ma led(nom) v dimming control (mv) i vs. v dimming control ld out max ld 0 10 20 30 40 50 60 70 80 90 100 050 100 150 200 250 300 i (%) out max i = 281ma v = 264v t = 23.5c led in a
al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 6 of 15 www.diodes.com june 2011 ? diodes incorporated new product typical characteristics (continued) measured using al9910ev4 140 150 160 170 180 190 200 85 105 125 145 165 185 205 225 245 265 input voltage (v ) 180ma led driver output current vs. input voltage rms i (ma) out max 18 leds 16 leds 14 leds 15 leds 17 leds 80 85 90 9 5 105 125 145 165 185 205 225 245 265 85 i nput voltage (v ) 180ma led driver efficiency vs. input voltage rms efficiency (%) 15 leds 16 leds 17 leds 18 leds 14 leds 0.7 0.75 0.8 0.85 0.9 0.9 5 85 105 125 145 165 185 205 225 245 265 in put voltage (v ) 180ma led driver power factor vs. input voltage rms power facto r 18 leds 17 leds 16 leds 15 leds 14 leds 4 6 8 10 12 85 105 125 145 165 185 205 225 245 265 i nput voltage (v ) 180ma led driver input power dissipation vs. input voltage rms power (w) 14 leds 15 leds 16 leds 17 leds 18 leds
al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 7 of 15 www.diodes.com june 2011 ? diodes incorporated new product applications information the al9910 is very versatile and is capable of operating in isolat ed or non-isolated topologies. it can also be made to operate in continuous as well as discontinuous conduction mode. fig. 1 functional block diagram the al9910 contains a high voltage ldo (see figure 1) the output of the ldo provides a power rail to the internal circuitry including the gate driver. a uvlo on t he output of the ldo prevents incorrect operation at low input voltage to the v in pin. in a non-isolated buck led driver when the gate pin goes high the external power mosfet q1 is turned on causing current to flow through the leds, inductor (l1) and current sense resistor (r sense ). when the voltage across r sense exceeds the current sense pin threshold the external mo sfet q1 is turned off. the stored energy in the inductor causes the current to continue to flow through the leds via diode d1. the al9910?s ldo provides all power to the rest of the ic including gate drive this removes the need for large high power start-up resistors. this means that operate correctly it require s around 0.5ma from the high vo ltage power rail. the ldo can also be used to supply up to 1ma to external circuits. the al9910 operates and regulates by limi ting the peak current of the external mo sfet; the peak current sense threshold is nominally set at 250mv. the same basic operation is true for isolated topologies, howe ver in these the energy stored in the transformer delivers energy to leds during the off-cycle of the external mosfet. design parameters setting the led current in the non-isolated buck converte r topology, figure 1, the averag e led current is not the peak current divided by 2 - however, there is a certain error due to the difference between the peak and the average current in the in ductor. the following equation accounts for this error: () ))i*5.0(i mv250 r ripple led sense + = . 250mv ld v dd ldo v in otp pwm_d gnd 7.5/10v osc s ro r osc gate cs 100k v dd v in r sense al9910/al9910a 250mv ld v dd ldo v in otp pwm_d gnd 7.5/10v osc s ro r osc gate cs 100k v dd v in r sense al9910/al9910a
al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 8 of 15 www.diodes.com june 2011 ? diodes incorporated new product applications information (continued) setting operating frequency the al9910 is capable of operating over a 25 and 300 khz sw itching frequency range. t he switching frequency is programmed by connecting an external resistor between r osc pin and ground. the corresponding oscillator period is: t osc = 25 22 + osc r s with r osc in k the switching frequency is the reciprocal of the oscillator period. typical values for r osc vary from 75k to 1m when driving smaller numbers of leds, care should be taken to ensure that t on > t blank . the simplest way to do this is to reduce/limit the switching fr equency by increasing the r osc value. reducing the switching frequency will also improve the efficiency. when operating in buck mode the designer mu st keep in mind that the input voltage must be maintained higher than 2 times the forward voltage drop across the leds. this limitation is related to the output current instabilit y that may develop when th e al9910 operates at a duty cycle gr eater than 0.5. this instability reveals itself as an oscillation of the output current at a sub- harmonic (sbo) of the switching frequency. the best solution is to adopt the so-called constant o ff-time operation as shown in figure 2. the resistor (r osc ) is, connected to ground by default, to set operating frequency. to force the al9910 to enter constant off time mode r osc is connected to the gate of the external mosf et. this will decrease the duty cycle from 50% by increasing the total period, t off + t on . fig. 2 constant off-time configuration the oscillator period equation above now defines the al9910 off time, t off . when using this mode the nominal switching frequency is chosen and from the nominal input an d output voltages the off-time can be calculated: osc f 1 )nom(in v )nom(out v 1 off t ? ? ? ? ? ? ? ? ? ?= from this the timing resistor, r osc , can be calculated: ( ) )k(2225)s(tr off osc ?? = al9910/a gate cs ld pwm_d gnd r osc v dd v in q1 r osc v in al9910/a gate cs ld pwm_d gnd r osc v dd v in q1 r osc v in
al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 9 of 15 www.diodes.com june 2011 ? diodes incorporated new product applications information (continued) inductor selection the non-isolated buck circuit, figure 1, is usually selected and it has two operation modes: continuous and discontinuous conduction modes. a buck power stage can be designed to operate in continuous mode for load current above a certain level usually 15% to 30% of full load. usually, the input voltage range, the output voltage and load current are defined by the power stage specification. this leaves the inductor value as the only design parameter to maintain continuous conduction mode. the minimum value of inductor to maintain continuous conduction mode can be determined by the following example. the required inductor value is determined from the desired peak-to- peak led ripple current in the inductor; typically around 30% of the nominal led current. l = () () osc led leds in fi3.0 dvv ? where d is duty cycle the next step is determining the total voltage drop across the led string. for example, when the string consists of 10 high- brightness leds and each diode has a forward voltage drop of 3.0v at its nominal current; the total led voltage v leds is 30v. dimming the led brightness can be dimmed either linearly (using the ld pin) or via pulse width modulation (using the pwm-d pin); or a combination of both - depending on the application. pulling the pwm_d pin to ground will turn off the al9910. when disabled, the al9910?s quiescent current is typically 0.5ma (0.65 for al9910a). reducing the ld voltage will reduce the led current but it will not entirely turn off the external power transistor and hence the led current ? this is due to the finite blanking period. only the pwm_d pin will turn off the power transistor. linear dimming is accomplished by applying a 45 to 250mv analog signal to the ld pin. this overrides the default 250mv threshold level of the cs pin and reduces the output current. if an input voltage greater than 250mv is applied to the ld then the output current will not change. the ld pin also provides a simple cost effective solution to soft start; by connecting a capacitor to the ld pin down to ground at initial power up the ld pin will be held low causing the sense threshold to be low. as the capacitor charges up the current sense threshold will increase thereby causing the average led current to increase. pwm dimming is achieved by appl ying an external pwm signal to the pwm_d pi n. the led current is proportional to the pwm duty cycle and the light output can be adjusted between zero and 100%.. the pwm signal enables and disables the al9910 - modulating the led current. the ultimate accuracy of the pwm dimming method is limited only by the minimum gate pulse width, which is a fr action of a percentage of the low frequency duty cycle. pw m dimming of the led light can be achieved by turning on and off the converter with low frequency 50hz to 1000hz ttl logic level signal. with both modes of dimming it is not possible to achieve average brightness levels higher than the one set by the current sense threshold level of the al9910. i f a greater led current is required then a smaller sense resistor should be used output open circuit protection the non-isolated buck led driver topology provides inherent protection against an open circuit condition in the led string due to the leds being connected in series with the inductor. should the led string become open circuit then no switching occurs and the circuit can be permanently left in this state with damage to the rest of the circuit.
al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 10 of 15 www.diodes.com june 2011 ? diodes incorporated new product applications information (continued) ac/dc off-line led driver the al9910 is a cost-effective off-line buck led driver-controller specifically designed for driving led strings. it is suitabl e for being used with either rectified ac line or any dc voltage between 15-500v. see figure 3 for typical circuit. fig. 3 typical application circuit (without pfc) buck design equations: = d in leds v v osc on f d t = l led on leds in i3.0 t)vv( ? = sense r ))3.0i(5.0(i 25.0 led led + where i led x 0.3 = i ripple design example for an ac line voltage of 120v the nominal rectified input voltage v in = 120v*1.41 = 169v. from this and the led chain voltage the duty cycle can be determined: d = v leds /v in = 30/169 = 0.177 from the switching frequency, for example f osc = 50khz, the required on-time of the external mosfet can be calculated: t on = d/f osc = 3.5 s the value of the inductor is determined as follows: l = (v in - v leds ) * t on /(0.3 * i led ) = 4.6mh r sense al9910/a gate cs ld pwm_d gnd r osc v dd v in led + led - v ac in q1 l1 d1 c1 r osc c2 c3 br1 r sense al9910/a gate cs ld pwm_d gnd r osc v dd v in led + led - v ac in q1 l1 d1 c1 r osc c2 c3 br1
al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 11 of 15 www.diodes.com june 2011 ? diodes incorporated new product applications information (continued) input bulk capacitor for offline lamps an input bulk capacitor is required to ensure t hat the rectified ac voltage is held above twice the led strin g voltage throughout the ac line cycle. the value can be calculated from: in c max_dclmin_line ch in vf2 v2 )d1(p ? ? where ch d : capacity charge work period, generally about 0.2~0.25 l f : input frequency for full range (85~265v rms ) max_dc v should be set 10~15% of min_line v2 if the capacitor has a 15% voltage ripple then a simplified formula for the minimum value of the bulk input capacitor approximates to: c min = 2 in leds led v 0.06 vi power factor correction if power factor improvement is required then for the input power less than 25w, a simple passive power factor correction circuit can be added to the al9910 typical application circuit. fi gure 4 shows that passive pfc circuitry (3 current steering diodes and 2 identical capacitors) does not significantly affect the rest of the circuit. simple passive pfc improves the line current harmonic distortion and achieves a power factor greater than 0.85. fig. 4 typical application circuit with passive pfc each of these identical capacitors should be rated for half of the input voltage and have twice as much capacitance as the calculated c min of the buck converter circuit without passive pf c (see above section on bulk capacitor calculation). for further design information please see an75 from the diodes website. r sense al9910/a gate cs ld pwm_d gnd r osc v dd v in led + led - v ac in q1 l1 d1 r osc c3 c4 br1 passive pfc c1 c2 r sense al9910/a gate cs ld pwm_d gnd r osc v dd v in led + led - v ac in q1 l1 d1 r osc c3 c4 br1 passive pfc c1 c2
al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 12 of 15 www.diodes.com june 2011 ? diodes incorporated new product applications information (continued) dc-dc buck led driver the design procedure for an ac input buck led driver outlined in the previous chapters equally applies dc input led drivers. when driving long led chains care should be taken not to i nduce sbo ? maximum led chain voltage should be less half of v in . so either maximum duty cycle should be kept below 50% or use of constant off-time removes this issue. dc-dc boost led driver due to the topology of the al9910 led driver-controller it is capable of being used in boost configurations ? at reduced accuracy. the accuracy can be improved by measuring the led current with an op amp and use the op amp?s output to drive the ld pin. a boost led driver is used when the forward voltage drop of the led string is higher than the input supply voltage. for example, the boost topology can be appropriate when input voltage is supplied by a 48v power supply and the led string consists of twenty hb leds, as the case may be for a street light. fig. 5 boost led driver in a boost converter, when the external mosfet is on the ener gy is stored in the inductor which is then delivered to the output when the external mosfet switches off. if the energy stored in the inductor is not fully depleted by the next switching cycle (continuous conduction mode) the dc conversion between input and output voltage is given by: d1 v v in out ? = ? out in out v vv d ? = from the switching frequency, f osc , the on-time of the mosfet can be calculated: osc on f d t = from this the required inductor value can be determined by: led onin i3.0 tv l ? ? = the boost topology led driver requires an output capacitor to deliver current to the led string during the time that the external mosfet is on. in boost led driver topologies if the leds should become open circuit damage may occur to the power switch and so some form of detection should be present to provide over-voltage detection/protection. r sense al9910/a gate cs ld pwm_d gnd r osc v dd v in q1 l1 d1 c1 r osc c2 c3 v in
new product a l9910/al9 9 document numbe r ordering i device al9910s-13 al9910as-13 AL9910-5sp- 1 al9910sp-13 al9910asp-1 notes: 7. pad http : marking i n (1) so-8 (2) so-8ep 9 10 a /al991 0 r : ds 35103 rev. 3 nformatio n v cs tole r 10 % 10 % 1 3 5 % 10 % 3 10 % layout as shown o : //www.diodes.co m n formatio n part n u 9910 f o 9910 a 0 -5 3 - 2 n r ance packa % % % s % s % s n diodes inc. sug g /datasheets/ap02 0 n u mber o r 7.5v fo r 10v logo variant blank : 7.5v a : 10v variant blank : 7.5v a : 10v univ e w w ge code pa c s s s p s p s p g ested pad layout d 0 01.pd f . 9910 x (top v yy w w 87 1 2 a l991 p s s p v dd v dd a l991 p s s p v dd v dd a l9 9 e rsal hi g 13 of 15 w w.diodes.com c kaging (note so-8 so-8 so-8ep so-8ep so-8ep d ocument ap0200 1 x iew) w x x 65 34 0 x xx - p ackage s : so-8 p : so-8ep 0 x xx - p ackage s : so-8 p : so-8ep 9 10/a l g h volta 7) qu a 2500/ta p 2500/ta p 2500/ta p 2500/ta p 2500/ta p 1 , which can be fo u ww : we e yy : year : g : green x x : inter n represent s 13 pac 13 : 13? t a 13 pac 13 : 13? t a l 9910 a ge high b 13? tape a ntity p e & reel p e & reel p e & reel p e & reel p e & reel u nd on our website e k : 01~52; 5 2 : 08, 09,10~ n al code s 52 and 53 w king a pe & reel king a pe & reel a /al9 9 b rightn e j ? diodes and reel part numbe r -13 -13 -13 -13 -13 at 2 w eek 9 10-5 e ss led driver une 2011 incorporated r suffix
al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 14 of 15 www.diodes.com june 2011 ? diodes incorporated new product package outline dimensions (all dimensions in mm) (1) package type: so-8 1.27typ 0.3/0.5 7~9 4.85/4.95 3.85/3.95 5.90/6.10 0.15/0.25 7~9 0.62/0.82 0.10/0.20 gauge plane 0.254 seating plane 0.35max. 45 detail "a" detail "a" 1.30/1.50 1.75max. land pattern recommendation (unit: mm) 6x-1.27 8x-1.55 8x-0.60 5.4 0/8 (2) package type: so8-ep 1.27typ 0.3/0.5 7x~ 9x 4.85/4.95 3 .85 /3 .9 5 5. 90 /6 .10 0.15/0.25 7x~ 9x 3. 70/ 4 .10 0.62/0.82 0/0.13 0. 25 4 0. 35max. 45x detail "a" detail "a" 1. 30/ 1. 50 1. 75max. bo ttom view 2. 4ref . 3.3ref. exposed pad 8x-0.60 land pa tte m recommendat ion (unit:mm) exposed pad 1 1 1 5. 4 8x -1. 55 6x-1.27
al9910/al9910a/AL9910-5 universal high voltage high brightness led driver al9910/al9910a/AL9910-5 document number: ds 35103 rev. 3 - 2 15 of 15 www.diodes.com june 2011 ? diodes incorporated new product 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 their equivalents under the laws of any jurisdiction). diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or ot her changes without further notice to this document and any product described herein. diodes incorporated does not assume any liabi lity arising out of the application or use of this document or any product described herein; neither does diodes incorporated convey any license under its patent or trademark rights, nor the rights of others. any customer or user of this document or products desc ribed 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 diodes incorporated website, harmless against all damages. diodes incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthoriz ed sales channel. should customers purchase or use diodes incorporated products for any unintended or unauthorized application, customers shall indemnify and hold diodes incorporated and its representatives harmless against all claims, damages, expenses, and attorney fee s arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized a pplication. products described herein may be covered by one or more united states, international or foreign patents pending. product names and markings noted herein may also be covered by one or more united states, international or foreign trademarks. 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 in the labeling 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 expected to cause the failure of the life support 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 dev ices 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 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 ? 2011, diodes incorporated www.diodes.com

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	To Download AL9910-5 Datasheet File
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