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| zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 1 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated description the zxld1350 is a hysteret ic mode inductive step-down converter with integrated switch and high side current sense. it operates from an input supply from 7v to 30v driving single or multiple series connected leds efficiently external adjustable output current up to 350ma. the zxld1350 has been qualified to aecq100 grade 2 allowing it to operate at ambient temperatures from -40 to 105c. the output current can be adjus ted by applying a dc voltage or a pwm waveform. 100:1 adjus tment of output current is possible using pwm control. a pplying a voltage of 0.2v or lower to the adj pin turns the output off and switches the device into a low current standby state. pin assignments features ? simple low parts count ? internal 30v ndmos switch ? internal pwm filter ? high efficiency (up to 95% (note 1) ? wide input voltage range: 7v to 30v ? 40v transient capability ? up to 1mhz switching frequency ? typical 4% output current accuracy ? qualified to aec-q100 grade 2 ? available in ?green? molding compound (no br, sb) ? lead free finish/ rohs compliant (note 2) typical application circuit set v in lx gnd adj zxld1350 r s 0.33 l1 47h c1 1f gnd v in 7~30v notes: 1. using standard external components as specified under electrical characteri stics. efficiency is dependent upon the nu mber of leds driven and on external component types and values. 2. eu directive 2002/95/ec (rohs) . all applicable rohs exemptions appl ied. please visit our website at: http://www.diodes.com/products/lead_free.html i sense v in adj gnd lx tsot23-5 top view
zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 2 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated block diagram figure 1. block diagram ? pin connection pin description name pin no. description lx 1 drain of ndmos switch gnd 2 ground (0v) adj 3 multi-function on/off and br ightness control pin: ? leave floating for normal operation.(v adj = v ref =1.25v giving nominal average output current i outnom =0.1/r s ) ? drive to voltage below 0.2v to turn off output current ? drive with dc voltage (0.3v zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 3 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated absolute maximum ratings (voltages to gnd unless otherwise stated) symbol parameter rating unit v in input voltage -0.3 to +30 (40v for 0.5 sec) v v sense i sense voltage +0.3 to -5 (measured with respect to v in ) v v lx lx output voltage -0.3 to +30 (40v for 0.5 sec) v v adj adjust pin input volt age -0.3 to +6 v i lx switch output current 500 ma p tot power dissipation (refer to package thermal de-rating curve on page 19) 450 mw t st storage temperature -55 to 150 c t j max junction temperature 150 c these are stress ratings only. operation above the absolute maxi mum rating may cause device failure. operation at the absolute maximum ratings, for extended periods, may reduce device reliability. thermal resistance symbol parameter rating unit ja junction to ambient 200 c/w recommended operating conditions symbol parameter min typ. max units v in input voltage 7 30 v t offmin minimum switch off-time 800 ns t onmin minimum switch on-time 800 ns d lx duty cycle range 0.01 0.99 t a ambient operating temperature range -40 +105 c i lx_cont average/rms lx switch current 0.37 a f lxmax recommended maximum operating frequency 1 mhz t pd internal comparator propagation delay 50 ns zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 4 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated electrical characteristics (test conditions: v in = 12v, t amb = 25c, unless otherwise specified.) (note 3) symbol parameter condition min. typ. max. unit v su internal regulator start-up threshold v in rising 4.8 v i inqoff quiescent supply current with output off adj pin grounded 15 20 a i inqon quiescent supply current with output switching adj pin floating f = 250khz 250 500 a v sense mean current sense threshold voltage (defines led current setting accuracy) measured on i sense pin with respect to v in v adj = 1.25v 95 100 105 mv v sensehys sense threshold hysteresis 15 % i sense i sense pin input current v sense = v in -0.1 1.25 10 a v ref internal refe rence voltage measured on adj pin with pin floating 1.21 1.25 1.29 v dv ref /dt temperature coefficient of v ref 50 ppm/ c v adj external control voltage range on adj pin for dc brightness control (note 4) 0.3 2.5 v v adjoff dc voltage on adj pin to switch device from active (on) state to quiescent (off) state v adj falling 0.15 0.2 0.25 v v adjon dc voltage on adj pin to switch device from quiescent (off) state to active (on) state v adj rising 0.2 0.25 0.3 v r adj resistance between adj pin and v ref 135 250 k ? i lxmean continuous lx switch current 0.37 a r lx lx switch ?on? resistance 1.5 2 ? i lx(leak) lx switch leakage current 1 a d pwm(lf) duty cycle range of pwm signal applied to adj pin during low frequency pwm dimming mode pwm frequency <500hz pwm amplitude = v ref measured on adj pin 0.01 1 brightness control range 100:1 d pwm(hf) duty cycle range of pwm signal applied to adj pin during high frequency pwm dimming mode pwm frequency <10khz pwm amplitude = v ref measured on adj pin 0.16 1 brightness control range 5:1 f lx operating frequency (see graphs for more details) adj pin floating l = 100h (0.82v) i out = 350ma @ v led = 3.4v driving 1 led 250 khz t ss start up time (see graphs for more details) time taken for output current to reach 90% of final value after voltage on adj pin has risen above 0.3v. 500 s notes: 3. production testing of the devic e is performed at 25c. functional operation of the device and parameters specified ov er a -40c to +105c temperature range, are guaranteed by design, characterization and process control. 4. 100% brightness corresponds to v adj = v adj(nom) = v ref . driving the adj pin above v ref will increase the v sense threshold and output current proportionally. zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 5 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated device description the device, in conjunction with the coil (l1) and current sense resistor (r s ), forms a self-oscillating continuous-mode buck converter. device operation (refer to block diagram and figure 1 - operating waveforms) operation can be best understood by assuming that the adj pin of the device is unc onnected and the voltage on this pin (v adj ) appears directly at the (+) input of the comparator. when input voltage v in is first applied, the initial current in l1 and rs is zero and there is no output from the current sense circuit. under this condition, the (-) input to the comparator is at ground and its out put is high. this turns mn on and switch es the lx pin low, causing current to flow from v in to ground, via r s , l1 and the led(s). the current rises at a rate determined by v in and l1 to produce a voltage ramp (v sense ) across r s . the supply referred voltage v sense is forced across internal resistor r1 by the current sense circuit and produces a proportional current in internal resistors r2 and r3. this produces a ground referred rising voltage at the (-) input of the co mparator. when this reache s the threshold voltage (v adj ), the comparator output swit ches low and mn turns off. the comparator output also drives another nmos switch, which bypasses internal resistor r3 to provide a controlled amount of hyster esis. the hysteresis is set by r3 to be nominally 15% of v adj . when mn is off, the current in l1 continues to flow via d1 and the led(s) back to v in . the current decays at a rate determined by the led and diode forward voltages to produce a falling voltage at the input of the comparator. when this voltage returns to v adj , the comparator output switches high again. this cycle of events re peats, with the comparator input ramping between limits of v adj 15%. switching thresholds with v adj =v ref , the ratios of r1, r2 and r3, define an average v sense switching threshold of 100mv (measured on the i sense pin with respect to v in ). the average output current i outnom is then defined by this voltage and rs according to: i outnom =100mv/r s nominal ripple current is 15mv/r s adjusting output current the device contains a low pass filter between the adj pin and th e threshold comparator and an internal current limiting resistor (200k nom) between adj and the internal reference voltage. this allows the adj pin to be overdriven with either dc or pulse signals to change the v sense switching threshold and adjust the out put current. the filter is third order, comprising three sections, each with a cut-off frequency of nominally 4khz. details of the different modes of adjusting output current are give n in the applications section. output shutdown the output of the low pass filter drives the shutdown circuit. w hen the input voltage to this circuit falls below the threshold (0.2v nom), the internal regulator and the output switch ar e turned off. the voltage reference remains powered during shutdown to provide the bias current fo r the shutdown circuit. quiescent supply current during shutdown is nominally 15ma and switch leakage is below 1ma. zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 6 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated device description (continued) figure 1. theoretical operating waveforms zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 7 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated device description (continued) typical operating waveforms [v in = 12v, r s = 0.3v, l = 100 h] normal operation. output current (ch3) and lx voltage (ch1) start-up waveforms. output current (ch3), lx voltage (ch1) and v adj (ch2) zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 8 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated typical operating conditions zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 9 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated typical characteristics (continued) zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 10 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated typical characteristics (continued) zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 11 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated typical characteristics (continued) zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 12 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated application information setting nominal average output current with external resistor r s the nominal average output current in the led(s) is determi ned by the value of the external current sense resistor (r s ) connected between v in and i sense and is given by: i outnom = 0.1/r s [for r s > 0.27 ? ] the table below gives values of nominal average output current for several prefe rred values of current setting resistor (r s ) in the typical application circuit shown on page 1: r s ( ? ) nominal average output current (ma) 0.27 370 0.30 333 0.33 300 0.39 256 the above values assume that the adj pin is floating and at a nominal voltage of v ref (=1.25v). note that r s = 0.27v is the minimum allowed value of sense resistor under these conditions to maintain switch current below the specified maximum value. it is possible to use different values of r s if the adj pin is driven from an exte rnal voltage. (see next section). output current adjustment by external dc control voltage the adj pin can be driven by an external dc voltage (v adj ), as shown, to adjust the output current to a value above or below the nominal average value defined by r s . the nominal average output current in this case is given by: i outdc = 0.08*v adj /r s for 0.3 < v adj < 2.5v note that 100% brightness setting corresponds to v adj = v ref . when driving the adj pin above 1.25v, r s must be increased in proportion to prevent i outdc exceeding 370ma maximum. the input impedance of the adj pin is 200k ? 25%. ? gnd zxld1350 adj + dc gnd zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 13 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated application information (continued) output current adjustment by pwm control directly driving adj input a pulse width modulated (pwm) signal with duty cycle d pwm can be applied to the adj pin, as shown below, to adjust the output current to a value above or below t he nominal average value set by resistor r s : driving the adj input via open collector transistor the recommended method of driving the adj pin and controlling the amplitude of the pwm waveform is to use a small npn switching transistor as shown below: this scheme uses the 200k resistor between the adj pin and th e internal voltage reference as a pull-up resistor for the external transistor. driving the adj input from a microcontroller another possibility is to drive the device from the open drai n output of a microcontroller. the diagram below shows one method of doing this: the diode and resistor suppress possible high amplitude negative spikes on the adj input resulting from the drain-source capacitance of the fet. negative spikes at the input to the device should be avoi ded as they may cause errors in output current, or erratic device operation. pwm dimming can be further split into high frequency and low frequency pwm dimming and how the device responds to these. v adj gnd adj zxld1350 gnd 0v pwm adj zxld1350 gnd gnd pwm zxld1350 gnd adj 10k mcu zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 14 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated application information (continued) low frequency pwm mode when the adj pin is driven with a low frequency pw m signal (eg 100hz), with a high level voltage v adj and a low level of zero, the output of the internal low pass filter will swing between 0v and v adj , causing the input to the shutdown circuit to fall below its turn-off threshold (200mv nom) when the adj pin is low. this will cause the output current to be switched on and off at the pwm frequency, resulting in an average output current i outavg proportional to the pwm duty cycle. (see figure 2 - low frequency pwm operating waveforms). figure 2. low frequency pwm operating waveforms the average value of output current in this mode is given by: i outavg 0.1d pwm /r s for d pwm >0 01 this mode is preferable if optimum led 'whiteness' is r equired. it will also provide the widest possible dimming range (approx. 100:1) and higher efficiency at the expense of greater output ripple. note that the low pass filter introduces a small error in the output duty cycle due to the difference between the start-up and shut-down times. this time difference is a result of the 200mv shutdown threshold and the rise and fall times at the output of the filter. to minimize this error, the pwm duty cycle should be as low as possible consistent with avoiding flicker in the led . zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 15 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated application information (continued) high frequency pwm mode at pwm frequencies above 10khz and for duty cycles above 0.16, the output of the internal low pass filter will contain a dc component that is always above the shut down threshold. this will maintain continuous device operation and the nominal average output current will be proportional to the average voltage at the output of th e filter, which is directly proportional to the duty cycle. (see figure 3 ? high frequency pwm operating waveforms). for best results, the pwm frequency should be maintained above the minimum specified value of 10khz, in order to minimize ripple at the out put of the filter. the shutdown comparator has approximately 50mv of hyst eresis, to minimize erratic switching due to this ripple. an upper pwm frequency limit of approximately one tenth of the operating frequency is recommended, to avoid excessive output modulation and to avoid injecting excessive noise into the internal reference. figure 3. high frequency pwm operating waveforms the nominal average value of output current in this mode is given by: i outnom ? 0.1d pwm /r s for d pwm >0.16 this mode will give minimum output ripple and reduced radi ated emission, but with a reduc ed dimming range (approx.5:1). the restricted dimming range is a result of the device being turned off when the dc component on the filter output falls below 200mv. shutdown mode taking the adj pin to a voltage below 0.2v for more than approximately 100 s, will turn off the output and supply current will fall to a low standby level of 15 a nominal. note that the adj pin is not a logic input. taking the adj pin to a voltage above v ref will increase output current above the 100% nominal average value. (see graphs for details). zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 16 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated application information (continued) soft-start the device has inbuilt soft-start action due to the delay through the pwm filter. an external capacitor from the adj pin to ground will provide additional soft-start delay, by increasing the ti me taken for the voltage on th is pin to rise to the turn-o n threshold and by slowing down the rate of rise of the contro l voltage at the input of the comparator. with no external capacitor, the time taken for the output to reac h 90% of its final value is approximately 500 s. adding capacitance increases this delay by approximately 0.5ms/nf. the graph below shows the variation of soft-star t time for different values of capacitor. inherent open-circuit led protection if the connection to the led(s) is open-circuited, the coil is is olated from the lx pin of the chip, so the device will not be damaged, unlike in many boost converters, where the back emf may damage the internal switch by forcing the drain above its breakdown voltage. capacitor selection a low esr capacitor should be used for input decoupling, as the esr of this capacitor appears in series with the supply source impedance and lowers overall efficiency. this capacitor has to supply the relatively high peak current to the coil and smooth the current ripple on the input supply. a minimum value of 1 f is acceptable if the input source is close to the device, but higher values will improve performance at lower input voltag es, especially when the source impedance is high. the input capacitor should be placed as close as possible to the ic. for maximum stability over temperature a nd voltage, capacitors with x7r, x5r, or better dielectric are recommended. capacitors with y5v dielectric are not suitable for decoupling in this application and should not be used. a table of recommended manufacturers is provided below: manufacturer website murata www.murata.com taiyo yuden www.t-yuden.com kemet www.kemet.com avx www.avxcorp.com zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 17 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated application information (continued) inductor selection recommended inductor values for the zxld1350 are in the range 47h to 220h. higher values of inductance are recommended at higher supply volt ages in order to minimize errors due to switching delays, which result in increased ripple and lower efficiency. higher va lues of inductance also result in a smaller change in output current over the supply voltage range. (see graphs). the inductor should be mounted as close to the device as possible with low resistance connections to the lx and v in pins. the chosen coil should have a saturation current hi gher than the peak output current and a continuous current rating above the required mean output current. suitable coils for use with the zxld1350 are listed in the table below: part no. l (h) dcr (v) i sat (a) manufacturer do1608c 47 0.64 0.5 coilcraft mss6132ml 47 0.38 0.56 68 0.58 0.47 100 0.82 0.39 cd104-mc 220 0.55 0.53 sumida np04sb470m 47 0.27 0.38 taiyo yuden the inductor value should be chosen to maintain operating duty cycle and switch 'on'/'off' times within the specified limits ov er the supply voltage and load current range. the following equations can be used as a guide, wi th reference to figure 1 - operating waveforms. lx switch 'on' time () lxlsavg led in on rrrivv il t ++?? = note: t onnmin > 200ns lx switch 'off' time () lsavgdled off rrivv il t +++ = note: t offmin > 200ns where: l is the coil inductance (h) r l is the coil resistance ( ) i avg is the required led current (a) i is the coil peak-peak ripple current (a) {internally set to 0.3 x i avg } v in is the supply voltage (v) v led is the total led forward voltage (v) r lx is the switch resistance ( ) v d is the rectifier diode forward voltage at the required load current (v) zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 18 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated application information (continued) example: for v in =12v, l=47h, rl=0.64v, v led =3.4v, i avg =350ma and v d =0.36v t on = (47e-6 x 0.105)/(12 - 3.4 - 0.672) = 0.622s t off = (47e-6 x 0.105)/(3.4 + 0.36 + 0.322)= 1.21s this gives an operating frequency of 546khz and a duty cycle of 0.34. these and other equations are available as a spreadsheet calculator from the diodes website. note that in practice, the duty cycle and operating frequency will deviate from the calculated values due to dynamic switching delays, switch rise/fall times and losses in the external components. optimum performance will be achieved by setting the duty cycle close to 0.5 at the nominal supply voltage. this helps to equalize the undershoot and overshoot and improves temperature stability of the output current. diode selection for maximum efficiency and performance, the rectifier (d1) should be a fast low capacitance schottky diode with low reverse leakage at the maximum operating voltage and temperature. the recommended diode for use with this part is the zlls1000. this has approximately ten times lower leakage than standard schottky diodes, which are unsuitable for use above 85c. it also provides better efficiency than silicon diodes, due to a combination of lower forward voltage and reduced recovery time. the table below gives the typical characteristics for the zlls1000: diode forward voltage @ 100ma (mv) continuous current (ma) reverse leakage @ 30v 85c (ma) package zlls1000 310 1000 300 tsot23 if alternative diodes are used, it is important to select parts with a peak current rating above the peak coil current and a continuous current rating higher than the maximum output load current. it is very important to consider the reverse leakage of the diode when operating above 85c. excess leakage will increase the power dissipation in the device. the higher forward voltage and overshoot due to reverse recovery time in silicon diodes will increase the peak voltage on the lx output. if a silicon diode is used, care should be taken to ensure that the total voltage ap pearing on the lx pin including supply ripple, does not exceed the specified maximum value. reducing output ripple peak to peak ripple current in the led(s) can be reduced, if required, by shunting a capacitor cled across the led(s) as shown below: zxld1350 led cled l1 lx i sense d1 r s v in v in zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 19 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated application information (continued) a value of 1 f will reduce nominal ripple current by a factor three (approx.). proportionally lower ripple can be achieved with higher capacitor values. note that the capacitor will not affect operating frequency or efficiency, but it will increase start- up delay, by reducing the rate of rise of led voltage. operation at low supply voltage the internal regulator disables the drive to the switch until the supply has risen above the start-up threshold (vsu). above this threshold, the device will start to operate. however, with the supply voltage below the specified minimum value, the switch duty cycle will be high and the device power dissipation will be at a maximum. care should be taken to avoid operating the device under such conditions in the application, in order to minimize the risk of exceeding the maximum allowed die temperature. (see next section on thermal considerations). note that when driving loads of two or more leds, the forward drop will normally be sufficient to prevent the device from switching below approximately 6v. this will minimize the risk of damage to the device. thermal considerations when operating the device at high ambient temperatures, or when driving maximum load current, care must be taken to avoid exceeding the package power dissipation limits. the graph below gives details for power derating. this assumes the device to be mounted on a (25mm) 2 pcb with 1oz copper standing in still air. note that the device power dissipation will most often be a maximum at minimum supply voltage. it will also increase if the efficiency of the circuit is low. this may result from the use of unsuitable coils, or excessive parasitic output capacitance o n the switch output. thermal compensation of output current high luminance leds oft en need to be supplied with a tem perature compensated cu rrent in order to maintain stable and reliable operation at all drive levels. the leds are usually mounted remotely from the device, so for this reason, the temperature coefficients of the internal circuits for the zxld1350 have been optimized to minimize the change in output current when no compensation is employed. if output current compensation is required, it is possible to use an external temperature sensing network - normally using negative temper ature coefficient (ntc) thermistors and/or diodes, mounted very close to the led(s). the output of the sensing network can be used to drive the adj pin in order to reduce output current with increasing temperature. zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 20 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated application information (continued) layout considerations lx pin the lx pin of the device is a fast switching node, so pcb tracks should be kept as short as possible. to minimize ground 'bounce', the ground pin of the device should be soldered directly to the ground plane. coil and decoupling capacitors it is particularly important to mount the coil and the input decoupling capacitor close to the device to minimize parasitic resistance and inductance, which will degrade efficiency. it is also important to take account of any track resistance in serie s with current sense resistor rs. adj pin the adj pin is a high impedance input, so when left floating, pcb tracks to this pin should be as short as possible to reduce noise pickup. a 100nf capacitor from the adj pin to ground will reduce frequency modulation of the output under these conditions. an additional series 10k ? resistor can also be used when driving the adj pin from an external circuit (see below). this resistor will provide filtering for low frequency noise and provide protection against high voltage transients. zxld1350 gnd adj 100nf gnd 10k high voltage tracks avoid running any high voltage tracks close to the adj pin, to reduce the risk of leakage due to board contamination. any such leakage may raise the adj pin voltage and cause excessive output current. a ground ring placed around the adj pin will minimize changes in output current under these conditions. zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 21 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated ordering information device part mark package code packaging (note 5) reel size (mm) reel width (mm) quantity per reel part numbe r suffix aec-q100 level ZXLD1350ET5TA 1350 et5 tsot23-5 180 8 3000 ta grade 2 note: 5. pad layout as shown on diodes inc. suggested pad la yout document ap02001, which can be found on our website at http://www.diodes .com/datasheets/ap02001.pdf. package outline dimensions tsot23-5 tsot23-5 dim min max typ a ? 1.00 ? a1 0.01 0.10 ? a2 0.84 0.90 ? d ? ? 2.90 e ? ? 2.80 e1 ? ? 1.60 b 0.30 0.45 ? c 0.12 0.20 ? e ? ? 0.95 e1 ? ? 1.90 l 0.30 0.50 l2 ? ? 0.25 0 8 4 1 4 12 ? a ll dimensions in mm c a1 l e1 e a2 d e1 e 5x b 4x 1 l2 a zxld1350 30v 350ma led driver with aec-q100 zxld1350 document number: ds33468 rev. 8 - 2 22 of 22 www.diodes.com march 2011 ? diodes incorporated a product line o f diodes incorporated 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 described herein. diodes incorporated does not assume any liability arising out of the application or use of this document or any product described her ein; neither does diodes 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 in corporated 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 what soever in respect of any pr oducts purchased through unauthoriz ed sales channel. should customers purchase or use diodes in corporated products for any unintended or unauthorized application, customers shall i ndemnify and hold diodes incorporated and its representatives harmless a gainst all claims, damages, expens es, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death 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 names and markings noted herein may also be covered by one or mo re 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 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 prop erly used in accordance with instructions for use provided in the labeling can be reasonably expected to re sult in significant injury to the user. b. a critical component is any component in a life support dev ice 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 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-cri tical, life support devices or systems, notwithstanding any devic es- or systems- related information or support that may be provided by diodes inco rporated. further, customers must fully indemnify diodes inc orporated and its representatives against any damages aris ing out of the use of diodes incorporated products in such safety-critical, life su pport devices or systems. copyright ? 2011, diodes incorporated www.diodes.com |
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