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zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 1 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 dc-dc boost switching controllers description the zxsc410/420/440 are dc-dc boost controllers. their wide input voltage range make suitable for operation from a number of battery configurations including single li -ion cell and 2~3 alkaline/nicd/nimh cells. using high gain diodes zete x-brand switching npn-transistors allow high voltage boost ratios and/or high output current depending on transistor. the zxsc410/440 has a shutdown feature that can also be used for some dimming functionality. zxsc420/440 includes an end of regulation flag that can be used to indicate when the regulator is no longer able to maintain the regulated output voltage/current or has reached the required current/voltage. the zxsc440 combines the features of the zxsc410 and zxsc420 into one device. features ? 1.65v to 8v supply range ? typical output regulation of 1% ? over 85% typical efficiency ? output currents up to 300ma ? 4.5a typical shutdown current zxsc410/440 ? end of regulation output zxsc420/440 ? available in sot26 and msop-8 ? totally lead-free & fully rohs compliant (notes 1 & 2) ? halogen and antimony free. ?green? device (note 3) pin assignments zxsc410 (sot26) drive vfb sense v cc gnd stdn 1 2 3 8 7 6 zxsc420 (sot26) drive vfb sense v cc gnd eor 1 2 3 8 7 6 zxsc440 (msop-8) drive vfb sense n/c v cc gnd eor stdn 1 2 3 4 8 7 6 5 applications ? system power for battery portable products ? lcd bias ? local voltage conversion ? high brightness led driving notes: 1. no purposely added lead. fully eu directiv e 2002/95/ec (rohs) & 2011/6 5/eu (rohs 2) compliant. 2. see http://www.diodes.com for more in formation about diodes incorpor ated?s definitions of halogen- and antimony-free, "gree n" 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. typical applications circuit zxsc410 zxtn25012efh zhcs2000 22h 18m? 820m? 22f 100f
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 2 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 pin descriptions pin name pin number function zxsc410 zxsc420 zxsc440 v cc 1 1 8 supply voltage gnd 2 2 7 ground stdn 3 ? 5 shutdown (zxsc410 and zxsc440) eor ? 3 6 end of regulation (zxsc420 and zxsc440) sense 4 4 3 inductor current sense input. internal threshold voltage set to 28mv. connect external sense resistor. v fb 5 5 2 reference voltage. internal threshold set to 300mv. connect external resistor network to set output voltage. drive 6 6 1 drive output for external switching transistor. connect to base or gate of external switching transistor. nc ? ? 4 no connection functional block diagram
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 3 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 absolute maximum ratings (@t a = +25c, unless otherwise specified.) parameter rating unit v cc -0.3 to +10 v drive -0.3 to v cc +0.3 v eor -0.3 to v cc +0.3 v stdn -0.3 to the lower of (+5.0) or (v cc +0.3) v v fb , sense -0.3 to the lower of (+5.0) or (v cc +0.3) v operating temperature -40 to +85 c storage temperature -55 to +120 c power dissipation @ +25c 450 mw caution: stresses greater than the 'absolute maximum ratings' specified a bove, may cause permanent damage to the device. these are stres s ratings only; functional operation of the device at th ese or any other conditions exceeding those indicated in this specification is not imp lied. device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time. semiconductor devices are esd sensitive and may be damaged by ex posure to esd events. suitable esd precautions should be taken when handling and transporting these devices. recommended operating conditions (@t a = +25c, unless otherwise specified.) symbol parameter min max unit v cc v cc range 1.8 8 v t a ambient temperature range -40 +85 c v ih shutdown threshold 1.5 v cc v v il shutdown threshold 0 0.55 v electrical characteristics (v cc = 3v, @t a = +40c to +85c, unless otherwise specified.) symbol parameter conditions min typ max unit i q (note 4) quiescent current v cc = 8v 220 a i stdn shutdown current 4.5 a e ff (note 5) efficiency 50ma > i out > 300ma 85 % acc ref reference tolerance 1.8v < v cc < 8v -3.0 +3.0 % tco ref reference temp co. 0.005 %/c t drv discharge pulse width 1.8v < v cc < 8v 1.7 s f osc operating frequency 200 khz input parameters v sense sense voltage (note 5) 22 28 34 mv i sense sense input current v fb = 0v; v sense = 0v -1 -7 -15 a v fb feedback voltage t a = +25c 291 300 309 mv i fb (note 6) feedback input current v fb = 0v; v sense = 0v -1.2 -4.5 a dv ln line voltage regulation 0.5 %/v output parameters i out (note 7) output current v in > 2v, v out = v in 300 ma i drive transistor drive current v drive = 0.7v 2 3.4 5 ma v drive transistor voltage drive 1.8v < v cc < 8v 0 v cc -0.4 v c drive mosfet gate drive cpbty 300 pf v oheor eor flag output high i eor = -300na 2.5 v cc v v oleor eor flag output low i eor = 1ma 0 1.15 v t eor eor delay time t a = +25c 70 195 250 s di ld load current regulation 0.01 %/ma notes: 4. excluding gate/base drive current. 5. effective sense voltage observed when switching at approxima tely 100khz. the internal comparator propagation delay of appro ximately 1s causes an increase in the effective sense volt age over a dc measurement of the sense voltage. 6. i fb is typically half of these values at 3v. 7. system not device specificat ion, including recommended transistors.
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 4 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 typical characteristics 18 234567 29.0 27.0 28.5 28.0 27.5 input voltage (v) input voltage vs. sense voltage se n se v o l t a g e (mv ) t = -40c a t = 25c a t = 85c a 18 234567 8 7 3 2 6 5 4 input voltage (v) input voltage vs. shutdown voltage shutdown current (a) t = -40c a t = 25c a t = 85c a i = 0v stdn 18 234567 3.5 3.2 3.4 3.3 3.6 input voltage (v) input voltage vs. drive current d r ive c u r r e n t (ma ) t = -40c a t = 25c a t = 85c a input voltage (v) input voltage vs. feedback voltage 18 234567 310 290 300 feedback voltage (mv) t = -40c a t = 25c a t = 85c a
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 5 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 application information functional blocks bandgap reference all threshold voltages and internal currents are derived from a temperature compensated bandgap reference circuit with a refere nce voltage of 1.22v nominal. dynamic drive output depending on the input signal, the output is eit her ?low? or ?high?. in the high state a 2.5ma current source (max drive voltag e = v cc -0.4v) drives the base or gate of the external transistor. in order to operate the external switching transistor at optimum efficiency , both output states are initiated with a short transient current in order to qui ckly discharge the base or the gate of the switching transistor. switching circuit the switching circuit consists of two co mparators, comp1 and comp2, a gate u1, a monostable and the drive output. normally the drive output is ?high?; the external switching transistor is turned on. curre nt ramps up in the inductor, the switching transistor and exter nal current sensing resistor. this voltage is sensed by comparator, comp2, at input i sense . once the current sense voltage ac ross the sensing resistor exceeds 20mv, comparator comp2 through gate u1 triggers a re-tri ggerable monostable and turns off the output drive stage for 2 s. the inductor discharges to the load of the application. after 2 s a new charge cycle begins, thus ramping the out put voltage. when the output voltage reaches the nominal value and vfb gets an input voltage of more than 300mv, the monostable is forced ?on? from comp1 through gate u1, u ntil the feedback voltage falls below 300mv. the above ac tion continues to maintain regulation. eor, end of regulation detector (zxsc420/440) the eor circuit is a retriggerable 120 s monostable, which is re-triggered by every down regulating action of comparator comp1. as long as regulation takes place, output eor is ?high? (high impedance, 100k to v cc ). short dips of the output voltage of less than 120 s are ignored. if the output voltage falls below the nominal value for more than 120 s, output eor goes ?low?. the reason for this to happen is usually a slowly progressing drop of input voltage from the discharging battery. th erefore the output voltage will also start to drop slowly. wi th the eor detector, batteries can be used to the ultimate end of discharge, with enough time left for a safe shutdown. it can also be used in high- voltage photoflash with the zxsc440 to show when the capacitor is fully charged. shutdown control the zxsc410/440 offers a shutdown mode that consumes a stan dby current of less than 5a. the zxsc410/440 is enabled, and is in normal operation, when the voltage at the stdn pin is between 1v and 8v (and also open circuit). the zxsc410/440 is shutdown with the driver disabled when the voltage at the stdn pin is 0.7v or lower. the stdn input is a high impedance current source of 1a typ. the d riving device can be an open-collector or -drain or a logic output with a ?hi gh? voltage of 5v max. the device shutdown current depends on th e supply voltage, see typical characteristics graph.the z xsc440 with its stdn pin and eor pins ca n be used as a camera flash driver. the stdn pin is used to initiate the high voltage capacitor charge cycle. the eor pin is used as flag to show when the capacito r has been charged to the appropriate level. a transformer is used to boost the voltage. if designing a transformer, bear in mind that the primary current may be over an am p and, if this flows through 10 turns, the primary flux will be 10 amp. small number of turns and small cores will need an air gap to cope with this value without saturation. secondary winding capacitance shoul d not be too high as this is working at 300v and could soon cause excessive loss es.
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 6 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 application information (cont.) external component selection switching transistor selection the choice of switching transistor has a major impact on the c onverter efficiency. for optimum performance, a bipolar transisto r with low v ce(sat) and high gain is required. the v ceo of the switching transistor is also an important par ameter as this sees the full output voltage when the transistor is switched off. diodes sot26 transistors are an ideal choice for this application. schottky diode selection as with the switching transistor, the schottky rectifier diode has a major impact on the conver ter efficiency. a schottky diode with a low forward voltage and fast recovery time should be used for this application. the diode should be selected so that the maximum forward current rating is greater or equal to the maximum peak current in the inductor, and the maximum reverse voltage is greater or equal to the out put voltage. the diodes zhcs series meet these needs. inductor selection the inductor value must be chosen to satisfy performance, cost and size requirements of the overall solution. inductor selection has a significant impact on the converter performance. for applicati ons where efficiency is critical, an ind uctor with a series resistance of 500m ? or less should be used. output capacitors output capacitors are a critical choice in the overall perform ance of the solution. they are required to filter the output and supply load transient currents. there are three parameters which are paramount in the selection of the output capacitors, capacitance, i ripple and esr. the capacitance value is selected to meet the l oad transient requirements. the capacitors i ripple rating must meet or exceed the current ripple of the solution. the esr of the output capacitor can also affect loop stability and transient performance. the capacitors selected for the solut ions, and indicated in the reference designs, are optimised to provide the best overall performance. input capacitors the input capacitor is chosen for its voltage and rms current rating. the use of low esr electrolytic or tantalum capacitors is recommended. capacitor values for optimum performance ar e suggested in the reference design section. also note that the esr of the input capacitor is effectively in series with the input and henc e contributes to efficiency losse s in the order of i rms 2 esr. peak current definition in general, the i pk value must be chosen to ensure that the switching transistor, q1, is in full saturation with maximum output power conditions, assuming worse case input voltage and transistor gain under all operating temperatureextremes.once i pk is decided the value of r sense can be determined by: i v r pk sense sense ? sense resistor a low value sense resistor is required to set the peak current. po wer in this resistor is negligible due to the low sense volta ge threshold, v sense .
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 7 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 application information (cont.) output power calculation by making the above assumptions for inductance and peak current the output power can be determined by: p out = i av x v in x = (watts) where ? ? ?? t t t t i i off on dis on pk av x 2 ? ? ? and v i t in pk on xl ? and v v i t in in pk dis xl ? ? and t off 1.7 s (internally set by zxsc410/420/440) and = efficiency i.e. 100% = 1 operating frequency can be derived by: t t off on 1 f ? ? output adjustment the zxsc410/420/440 are adjustable output controllers allowing t he end user the maximum flexibilty. they can be used both as sw itching voltage regulators and as constant current regulators. a feedba ck voltage of 300mv provides a good compromise for both voltage and current regulation. for a constant output voltage operation a potent ial divider network is connected as follows: v fb v out gnd r a r b the output voltage is determined by the equation: ? ? ? ? ? ? ? ? rb ra 1 v v fb out where v fb = 300mv the resistor values, ra and rb, should be ma ximised to improve efficienc y and decrease battery drain. optimisation can be achie ved by providing a minimum current of i fb(max) = 200na to the vfb pin. output is adjustable from v fb to the (br)v ceo of the switching transistor, q1. note: for the reference designs, ra is assigned the label r2 and rb the label r3. the zxsc410/420/440 can also be used to generate a constant curr ent between boosted output rail and the vfb pin by connecting a single resistor between vfb and gnd.
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 8 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 application information (cont.) led driving the zxsc410/420/440 make simple low voltage boost led drivers. the resistor value is determined by the following: led fb led r v i ? v fb gnd r led open-circuit protection as a boost converter if the load (led chai n) should become open-circuit a zener diode can be connected across the led chain pre venting over- voltage and possible damage to the main switching transistor. t he zener diodes should be selected by ensuring its voltage ratin g is higher than the combined forward voltage of the led chain. under open circui t conditions the current in t he zener diode defines the output current as: z fb z r v i ? the circuit example below give an open circuit output current of 300a. v fb gnd r led r z 1k? zd1 to converter
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 9 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 application information (cont.) dimming control there are many types of dimming control that can be implemented for the zxsc410/420/440. dimming control using the shutdown pin the first method uses the shutdown pin (only zxsc410 and zxsc440). by injecting a pwm waveform on this pin and varying the duty cycle, led current and hence led brightness can be adjusted. to implement this method of brightness control on the zxsc410/440, a pwm signal with amplitude of between 0.7v and v cc at a frequency of 120hz or above (to eliminate led flicker) should be applied to the stdn pin. the led current and hence led brightness is linearly proportional to the duty cycle ratio, so for brightness control adjust duty cycle ratio as necessary . for example, a 10% duty cycle equates to 10% of full led brightness. 30 0 10 o u t p u t c u r r e n t (a) 20 40 20 0 100 80 60 duty cycle (%) led current vs. duty cycle 4 white leds v = v = 3.3v in en dimming control using a dc voltage for applications where a pwm signal is not available or for the zxsc420 a dc voltage can be used to control dimming by modulati ng the v fb pin. by adding resistors r2 and r3 and applying a dc voltage, the led current can be adjusted from 100% to 0%. as the dc voltage increases, the voltage drop across r2 increases and the voltage drop across r1 decreases, thus reduci ng the current through the leds. selection of r2 and r3 should ensure that the current from the dc voltage is much less than the led current and much larger than the feedback current. the component values in the diagram above represent 0% to 100% dimming control from a 0 to 2v dc voltage. r2 10k r3 67k r1 v fb v dc dimming control using a filtered pwm signal the filtered pwm signal can be considered as an adjustable dc voltage by applying a rc filter (r4 and c1). the values shown in the diagram below are configured to give 0% to 100% dimming for a 1khz to 100k hz pwm signal with a 2v amplitude. e.g. a 50% duty cycle will give 50% dimming. c1 0.1f r2 10k r3 67k r1 v fb pwm r4 10k
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 10 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 application information (cont.) dimming control using a logic signal for applications where the led current needs to be adjusted in discrete steps a logic signal can be applied as shown in the diagram below. when q1 is ?off?, r1 sets the mini mum led current. when q1 is ?on?, r2 sets the led current that will be added to the minimum led current. the formula for selecting values for r1 and r2 are given below: mosfet ?off? 1 fb ) min ( led r v i ? i r2 r1 v fb logic signal q1 2n7002 mosfet ?on? ) min ( led 2 fb ) max ( led i r v i ? ? layout issues layout is critical for the circuit to func tion in the most efficient manner in terms of electrical effici ency, thermal consider ations and noise. for ?step-up converters? there are four main current loops, t he input loop, power-switch loop, rectifier loop and output loop. the supply charging the input capacitor forms the input loop. the power-switch loop is defined when q1 is ?on?, current flows from the input throug h the inductor, q1, r sense and to ground. when q1 is ?off?, the energy stored in the induc tor is transferred to the output capacitor and load via d1, for ming the rectifier loop. the output loop is formed by the output capacitor supplying the load when q1 is switched back off. to optimise for best performance each of t hese loops kept separate from each other and interconnected with short, thick traces thus minimising parasitic inductance, capacitanc e and resistance. also the r sense resistor should be connected, with minimum trace length, between emitter lead of q1 and ground, again minimizing stray parasitics.
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 11 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 application examples zxsc410 dc-dc boost voltage regulators v in = 2.5v to 4.2v, v out = 5v; i load = 100ma 020406080100 100 70 90 80 e f f i c ien c y (%) load current (ma) load current vs. efficiency v = 3.6v in v = 4.2v in v = 3v in 2.5 3.0 3.5 4.0 100 70 90 80 e f f i c ie n c y (%) input voltage (v) input voltage vs. efficiency i = 10ma load i = 100ma load i = 60ma load switching waveform output ripple zxsc410 zxtn25012efh zhcs2000 22h 100m ? 1k ? 22f 22f v in = 2.5v to 4.2v r3 16k ? c3 100nf
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 12 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 application examples (cont.) triple output tft bias generator zxsc410 as triple output tft bias sequencing a vdd and v on by adding the circuit below to the lcd bias output (v on ) of the converter a 10ms delay can be achieved between a vdd power up and v on power up. the circuit operates by a delay in turning the pmos transistor on, which transfers to a 10ms delay between input and output of the circuit. the delay is set by the rc time constant of r1 and c1. the diode, d1, discharges the gate of the pmos when the main system supply is turned off, gua ranteeing a delay every turn on cycle. system voltage a vdd c1 0.1f r1 470k lcd bias voltage v on q1 zxmp3a13f sequenced output 10ms delay zxsc410 q1 zxtn 25012efh c1 10f c5 1f c2 47f r1 22m ? r2 30k ? r3 1k ? l1 22h u1 d1 bat54 v cc stdn gnd v drive i sense v fb c7 1f c6 1f c8 1f c4 1f v on 27v, 10ma a vdd 9v, 180ma v off -9v, 10ma c3 1f v in 4.2v ~ 3v bat54s bat54s bat54s
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 13 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 application examples (cont.) battery powered two 1w led lamp this application shows the zxsc410/420/440 drivi ng 2 serial leds. the input voltage ranges from 2v to 3.6v with a maximum outpu t current of 360ma from 2.6v input. the wide input voltage range allows the use of different battery cell combinations. this could be dual alkaline cells with volt age starting from 3v down to 2v or triple nicad/nimh cells with voltage starting from 3.6v down to 2.7v. 2.8 2.6 2.4 2.2 2.0 3.6 3.4 3.2 3.0 input voltage (v) efficiency vs. input voltage 100 90 60 50 80 70 e f f i c ien c y (%) 0.4 0.0 0.2 o u t p u t c u r r en t (a) 2.8 2.6 2.4 2.2 2.0 3.6 3.4 3.2 3.0 input voltage (v) led current vs. input voltage zxsc410 zxtn25012efh zhcs2000 22h 18m ? 820m ? 22f 100f
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 14 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 application examples (cont.) high current led photoflash the input voltage is 3v with a maximum pulsed output current of 1a for 2ms. operation in charging mode, sw1 is closed and sw2 is open the zxsc410/420/440 is configured as a typical boost converter, charging capaci tor c2 up the regulated output voltage set by the ratio of r1 and r2. this is typically 16v. the peak current of the converter (current d rawn from the battery) is controlled by r3 plus r4, and is typically 280ma fo r this application. when c2 is charged to 16v the sw1 is opened and sw2 is closed, converting the zxsc400 to a step down converter to provide a 1a constant curr ent for 2ms to the photoflash led. during step down operation, current flows from c2, through the photoflash led, l1, u2 and is returned to c2 through r3. this means that the peak current is set at a higher value than in charging mode, typically 1a. when the current reaches its peak value, u2 is switched off and current flows from l1 through the schottky diode in u2, to the photoflash led. this cyclic process is repeated until c2 is discharged. zxsc410 q1 zxtn 25012 efh c1 1f c3 1f c2 150f r3 22m ? r4 100m ? r1 10k ? l1 12h u1 sw1 sw2 vbatt d1 bat54 v cc stdn gnd v drive i sense v fb charging mode: sw1 closed, sw2 open discharging mode: sw1 open, sw2 closed
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 15 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 ordering information device part mark package code packaging 7? tape & reel quantity part number suffix ZXSC410E6TA c410 e6 sot26 3000 ta zxsc420e6ta c420 e6 sot26 3000 ta zxsc440x8ta zxsc 440 x8 msop-8ep 1000 ta package outline dimensions (all dimensions in mm.) please see ap02002 at http://www.diodes.com /datasheets/ap02002.pdf for latest version. sot26 msop-8 sot26 dim min max typ a 0.35 0.50 0.38 b 1.50 1.70 1.60 c 2.70 3.00 2.80 d ?? ?? 0.95 h 2.90 3.10 3.00 j 0.013 0.10 0.05 k 1.00 1.30 1.10 l 0.35 0.55 0.40 m 0.10 0.20 0.15 ?? 0 8 ?? all dimensions in mm msop-8 dim min max typ a - 1.10 - a1 0.05 0.15 0.10 a2 0.75 0.95 0.86 a3 0.29 0.49 0.39 b 0.22 0.38 0.30 c 0.08 0.23 0.15 d 2.90 3.10 3.00 e 4.70 5.10 4.90 e1 2.90 3.10 3.00 e3 2.85 3.05 2.95 e - - 0.65 l 0.40 0.80 0.60 a 0 8 4 x - - 0.750 y - - 0.750 all dimensions in mm a m j l d b c h k a a1 a2 e seating plane gauge plane l see detail c detail c c a e1 e3 a3 1 e y x d b 0.25 4 x 1 0 4 x 1 0
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 16 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 suggested pad layout please see ap02001 at http://www.diodes.com/dat asheets/ap02001.pdf for the latest version. sot26 msop-8 dimensions value (in mm) z 3.20 g 1.60 x 0.55 y 0.80 c1 2.40 c2 0.95 dimensions value (in mm) c 0.650 x 0.450 y 1.350 y1 5.300 x z y c1 c2 c2 g x c y y1
zxsc410/zxsc420/zxsc440 document number: ds33618 rev. 5 - 2 17 of 17 www.diodes.com march 2013 ? diodes incorporated zxsc410/zxsc420/zxsc440 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 rese rve the right to make modifications, enhanc ements, improvements, corrections or ot her changes without further notice to this document and any product descri bed herein. diodes incorporated does not assume any liability ari sing out of the application or use of this document or an y product described herein; neither does di odes incorporated convey any license under its patent or trademark rights, nor the rights of others. any customer or us er of this document or products described herein in such applica tions 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 w hatsoever in respect of any products purchased through unauthoriz ed sales channel. should customers purchase or use diodes inco rporated products for any unintended or una uthorized application, customers shall i ndemnify and hold diodes incorporated and its representativ es harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death a ssociated with such unintended or unauthorized application. 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. this 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 component s in life support devices or systems without the express written approval of the chief executive offi cer of diodes incorporated. as used herein: a. life support devices or syst ems 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 proper ly 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 devic e or system whose failure to perform can be reasonably expect ed 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 ramifi cations of their life support dev ices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-rel ated requirements concerning the ir products and any use of diodes incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or s ystems-related information or support that may be provided by diodes incorporated. further, customers must fully indemnify diodes incorporate d and its representatives against any damages arisi ng out of the use of diodes incorporated pr oducts in such safety-critical, life suppor t devices or systems. copyright ? 2013, diodes incorporated www.diodes.com

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