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preliminary i ntegrated c ircuits d ivision preliminary ds-lia130-r00d 1 lia130 optically isolated error amplifier e 3 pb part # description lia130 8 pin dip (50/tube) lia130s 8-pin surface mount (50/tube) LIA130STR 8-pin surface mount (1000/reel) applications features description ordering information block diagram ? power system for workstations ? telecom central office supply ? telecom bricks ? optocoupler, precision reference, and error amplifier in a single package ? 1.240v 1% reference (@ 25oc) ? linear optical coupler technology with an industry standard 431-type ? ctr 300% to 600% linearity ? 3750v rms isolation 1 2 3 4 5 6 7 8 led fb comp gnd nc c e nc approvals ? ul recognized component: file # e76270 ? csa certified component: certificate # 1305490 the lia130 is an optically isolated amplifier with a 431-type precision programmable shunt reference combined in the same package. the optocoupler portion of the lia130 comprises a gallium arsenide (gaas) light-emitting diode (led) optically coupled to a silicon phototransistor. the current transfer ratio of the device is between 300% and 600%. the combination of features in the lia130 is optimal for use in isolated ac-to-dc power supplies and dc-to-dc converters. it replaces several discrete components, saves valuable circuit board space, and reduces complexity. the device is available in dip and surface-mount packages.
preliminary i ntegrated c ircuits d ivision preliminary 2 r00d lia130 absolute maximum ratings are stress ratings. stresses in excess of these ratings can cause permanent damage to the device. functional operation of the device at conditions beyond those indicated in the operational sections of this data sheet is not implied. parameter conditions symbol min typ max units input characteristics @ 25c led forward voltage i led = 5 ma, vc omp = v fb (fig.1) v f 0.9 - 1.4 v reference voltage v comp = v fb , i led = 10 ma, -40 to +85c (fig.1) v ref 1.224 1.24 1.259 v v comp = v fb , i led = 10 ma, 25c (fig.1) 1.228 1.24 1.252 deviation of v ref over temperature 1 t a = -40 to +85c v ref (dev) - 77 tbd mv ratio of v ref variation to the output of the error amplifier i led = 10 ma, v comp = v ref to 10 v (fig.2) ? v ref / ? v comp - 0.002 tbd mv/v feedback input current i led = 10 ma, r1 = 10 k ? (fig.3) i ref - 0.09 tbd ? a deviation of i ref over temperature 1 t a = -40 to +85c i ref (dev) - 0.028 tbd ? a minimum drive current v comp = v fb (fig.1) i led (min) -4580 ? a off-state error amplifier current v led = 6 v, v fb = 0 (fig.4) i (off) - 0.001 0.1 ? a error amplifier output impedance 2 v comp = v fb , i led = 0.1 ma to 15 ma, f<1 khz iz out i - 0.22 - ? output characteristics @ 25c collector dark current v ce = 10v (fig. 5) i ceo - 0.3 50 na collector-emitter voltage breakdown i c = 1.0ma bv ceo 70 - - v emitter-collector voltage breakdown i e = 100 a bv eco 7- - v 1. the deviation parameters v ref(dev) and i ref(dev) are defined as the differences between the maximum and minimum values obtained over the rated temperature range. the average f ull- range temperature coefficient of the reference input voltage, ? v ref , is defined as: | ? v ref | (ppm/c) = {v ref (dev) /v ref (t a 25c)} x 10 6 / ? t a where ? t a is the rated operating free-air temperature range of the device. 2. the dynamic impedance is defined as |z out | = ? v comp / ? i led . when the device is operating with two external resistors (see figure 2), the total dynamic impedance of the circuit is given by: |z out, tot | = ? v/ ? i ? |z out | x [1 + r1/r2] electrical characteristics parameter symbol ratings units collector-emitter voltage v ceo 20 v emitter-collector voltage v eco 7v input voltage v led 10 v input dc current i led 20 ma collector current i c 50 ma input power dissipation 1 p d 145 mw transistor power dissipation 2 p d 85 mw total power dissipation 3 p d 145 mw storage temperature t stg -55 to +125 c operating temperature t opr -40 to +85 c absolute maximum ratings (@ 25? c) 1 derate linearly from 25c at a rate of 2.42 mw/ c. 2 derate linearly from 25c at a rate of 1.42 mw/ c. 3 derate linearly from 25c at a rate of 2.42 mw/ c.
preliminary i ntegrated c ircuits d ivision lia130 preliminary 3 r00d parameter conditions symbol min typ max units transfer characteristics @ 25c current transfer ratio i led = 5 ma, v comp = v fb , v ce = 5 v (fig. 6) ctr 300 500 600 % collector-emitter saturation voltage i led = 10 ma, v comp = v fb , i c = 2.5 ma (fig. 6) v ce (sat) - 0.099 0.5 v isolation characteristics @ 25c input-output insulation leakage current 1 rh = 45%, t a = 25c, t = 5s, v i-o = 3000 v dc i i-o - - 1.0 ? a withstand insulation voltage 1 rh <= 50%, t a = 25c, t = 1 min v iso 2500 - - v rms resistance (input to output) 1 v i-o = 500 v dc r i-o -10 12 - ? switching characteristics @ 25c bandwidth (fig. 7) b w - 10 - khz common mode transient immunity at output high 2 i led = 0 ma, vcm = 10 v pp r l = 2.2 k ? (fig. 8) |cmh| - tbd - kv/ ? s common mode transient immunity at output low 2 i led = 10 ma, vcm = 10 v pp r l = 2.2 k ? (fig. 8) |cml| - tbd - kv/ ? s 1. device is considered as a two terminal device: pins 1, 2, 3 and 4 are shorted together and pins 5, 6, 7 and 8 are shorted to gether. 2. common mode transient immunity at output high is the maximum tolerable (positive) dvcm/dt on the leading edge of the common mode impulse signal, vcm, to assure that the output will remain high. common mode transient immunity at output low is the maximum tolerable (negative) dvcm/dt on the trailing edge of t he common pulse signal,vcm, to assure that the output will remain low. electrical characteristics r1 r2 pwm control lia130 v in v out 1 2 3 4 5 6 7 8 example application for the lia130
preliminary i ntegrated c ircuits d ivision preliminary 4 r00d lia130 2 3 8 6 7 5 i led i ref + 2 3 8 6 7 5 i off + v led 2 3 8 6 7 5 + v ce i ceo 2 3 8 6 7 5 i led i c + + v ref v ce v comp 2 3 8 6 7 5 + v f v ref i led i off test circuit ctr, v ce-sat test circuit v ref / v comp test circuit i ref test circuit i ceo test circuit v ref , v f , i led-min test circuit 2 3 8 6 7 5 i led + v comp v ref test circuits
preliminary i ntegrated c ircuits d ivision lia130 preliminary 5 r00d a b v cc = +5v dc v cc = +5v dc i f = 10 ma i f = 0 ma (a) i f = 10 ma (b) v in 0.47v 0.1 v pp 47 v out v out v cm 10v p-p r1 2.2k r l 1 f + _ frequency response cmh and cml 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 test circuits (cont.)
preliminary i ntegrated c ircuits d ivision preliminary 6 r00d lia130 *the performance data shown in the graphs above is typical of device performance. for guaranteed parameters not indicated in t he written speci? cations, please contact our application department. performance data* led current vs. cathode voltage (t a =25oc, v comp =v fb ) v comp - cathode voltage (v) i led - supply current (ma) -1.0 15 10 5 0 -5 -10 -15 -0.5 0.0 0.5 1.0 1.5 led current vs. cathode voltage (t a =25oc, v comp =v fb ) v comp - cathode voltage (v) i led - supply current (a) -1.0 150 120 90 60 30 0 -30 -60 -90 -120 -150 -0.5 0.0 0.5 1.0 1.5 reference voltage vs. ambient temperature v ref - reference voltage (v) -40 1.40 1.37 1.34 1.31 1.28 -20 0 20406080 i led =10ma temperature (oc) reference current vs. ambient temperature (i led =10ma, r 1 =10k : ) i ref - reference current (ma) -40 110 100 90 80 70 60 50 -20 0 20406080100 temperature (oc) off current vs. ambient temperature (v led =13.2v, v fb =0v) i (off) - off current (na) -40 0.5 0.4 0.3 0.2 0.1 0 -20 0 20406080100 temperature (oc) led forward current vs. forward voltage i led - forward current (ma) v f - forward-voltage (v) 0.8 20 15 10 5 0 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 85oc 55oc 25oc -5oc dark current vs. temperature (v ce =10v) i ceo - dark current (na) -40 50 40 30 20 10 0 -10 -20 0 20 40 60 80 100 temperature (oc) collector current vs. ambient temperature (v ce =5v) i c - collector current (ma) i led =20ma -40 120 100 80 60 40 20 0 -20 0 20 40 60 80 100 temperature (oc) i led =1ma i led =5ma i led =10ma current transfer ratio vs led current (v ce =5v) (i c /i f ) - current transfer ratio (%) i led - forward current (ma) 0 700 600 500 400 300 200 100 0 5 10152025 -5oc 25oc 55oc 85oc
preliminary i ntegrated c ircuits d ivision lia130 preliminary 7 r00d *the performance data shown in the graphs above is typical of device performance. for guaranteed parameters not indicated in t he written speci? cations, please contact our application department. performance data* saturation voltage vs. ambient temperature (i led =10ma; i c =10ma) v ce (sat) - saturation voltage (v) -40 0.30 0.25 0.20 0.15 0.10 0.05 0.00 -20 0 20406080100 temperature (oc) collector current vs. collector voltage (t a =25oc) i c - collector current (ma) v ce - collector-emitter (v) 0 180 160 140 120 100 80 60 40 20 0 12345678910 i led =20ma i led =1ma i led =5ma i led =10ma delta v ref / delta v comp vs. ambient temperature v ce (sat) - saturation voltage (v) -40 -1.5 -2.0 -2.5 -3.0 -20 0 20406080100 temperature (oc) voltage gain vs. frequency voltage gain, a(v o /v in ) db frenquency khz 10 15 0 -15 -30 100 1000 100 : 1k : 500 :
preliminary i ntegrated c ircuits d ivision preliminary 8 r00d lia130 the lia130 the lia130 is essentially an optically isolated error amplifier. it comprises three of the necessary components to form an isolated power supply: an optocoupler, an error amplifier, and a reference voltage device. the lia130 is the functional equivalent of a 431 series shunt voltage regulator plus an optocoupler in the same package. led pin fb pin comp pin gnd pin connect the gnd pin of the lia130 to the secondary ground of the converter. nc pins the nc (not connected) pins have no internal connection and must not have any connection to the secondary side, as this might compromise the primary-to-secondary isolation. c & e pins the led within the lia130 is powered by a sample of the output voltage that is being regulated. typically, a resistor divider is provided to keep this voltage sample within the operating range of the led and its series resistor. as the output voltage changes, the led light output changes, which provides a changing error voltage from the phototransistor output of the lia130. the sampled voltage must be at least 1.24v (the reference voltage) plus 1.5v (the led voltage drop) or a minimum of 2.74 volts. the sampled voltage can also be provided from a slaved secondary winding of the transformer rather than a resistor divider. there must be a current-limiting resistor in series with the led pin to keep the current flow through the led within its operating range for all expected sampled output levels. this resistor must be selected along with the resistor in series with the output phototransistor. the lia130, when connected as shown in the typical application circuit, will regulate the output voltage so that the voltage on its fb pin is 1.24v. set the values of the two voltage divider resistors, r1 and r2 in this way: r1/r2 = (v out / v ref ) - 1 the value of r1 is set by the input offset current, 0.8 ? a. 1% accuracy is obtained when the value of r1 satisfies this formula: ((v out - 1.24) / r1) > 80a the frequency response of the converter can be optimized for the particular application by placing a compensation network between the comp pin and the fb pin of the lia130. in a system with a typical low-bandwidth requirement, only a 0.1f capacitor might be needed. if the system has more critical bandwidth requirements, then measurements must be made of the system's loop. see ?practical design of power supplies? by ron lenk, ieee press, 1998, for an excellent description. the output phototransistor of the lia130 provides the isolated and amplified error signal that represents the dc output level of the converter. typically, the collector of the phototransistor will be pulled up to voltage and the emitter will be grounded. the value of the collector's pull-up resistor and the value of the led current-limiting resistor must be determined together with respect to the input voltage range of the pwm circuitry. the variation in ctr of the lia130 must also be taken into account. as an example, consider first that the minimum ctr of the lia130 is 300%. if the current-limiting resistor of the led is set to allow a maximum current through the led of 1ma when the converter output is at a nominal 15 volts: r led = (15v - 2.74v) / 0.001a = 12.260k ? then a minimum of 3ma will flow through the collector pull-up resistor. if the collector is pulled up to 12v and the pwm has an internal reference voltage of 5v, then the minimum resistor value is: r pullup > (12v - 5v) / 0.003a > 2.333k ? [standard values can be selected for r led and r pullup and the small differences then re-calculated.]
preliminary i ntegrated c ircuits d ivision lia130 preliminary 9 r00d manufacturing information moisture sensitivity all plastic encapsulated semiconductor packages are susceptible to moisture ingression. ixys integrated circuits division classified all of its plastic encapsulated devices for moisture sensitivity according to the latest version of the joint industry standard, ipc/jedec j-std-020 , in force at the time of product evaluation. we test all of our products to the maximum conditions set forth in the standard, and guarantee proper operation of our devices when handled according to the limitations and information in that standard as well as to any limitations set forth in the information or standards referenced below. failure to adhere to the warnings or limitations as established by the listed specifications could result in reduced product performance, reduction of operable life, and/or reduction of overall reliability. this product carries a moisture sensitivity level (msl) rating as shown below, and should be handled according to the requirements of the latest version of the joint industry standard ipc/jedec j-std-033 . device moisture sensitivity level (msl) rating lia130 / lia130s msl 1 esd sensitivity this product is esd sensitive , and should be handled according to the industry standard jesd-625 . reflow profile this product has a maximum body temperature and time rating as shown below. all other guidelines of j-std-020 must be observed. device maximum temperature x time lia130 / lia130s 250oc for 30 seconds board wash ixys integrated circuits division recommends the use of no-clean flux formulations. however, board washing to remove flux residue is acceptable, and the use of a short drying bake may be necessary. chlorine-based or fluorine-based solvents or fluxes should not be used. cleaning methods that employ ultrasonic energy should not be used. e 3 pb
preliminary i ntegrated c ircuits d ivision preliminary 10 r00d lia130 dimensions mm (inches) pcb hole pattern 2.540 0.127 (0.100 0.005) 6.350 0.127 (0.250 0.005) 9.144 0.508 (0.360 0.020) 0.457 0.076 (0.018 0.003) 9.652 0.381 (0.380 0.015) 7.239 typ. (0.285) 7.620 0.254 (0.300 0.010) 4.064 typ (0.160) 0.813 0.102 (0.032 0.004) 8-0.800 dia. (8-0.031 dia.) 2.540 0.127 (0.100 0.005) 7.620 0.127 (0.300 0.005) 7.620 0.127 (0.300 0.005) 6.350 0.127 (0.250 0.005) 3.302 0.051 (0.130 0.002) pin 1 0.254 0.0127 (0.010 0.0005) dimensions mm (inches) pcb land pattern 2.540 0.127 (0.100 0.005) 9.652 0.381 (0.380 0.015) 6.350 0.127 (0.250 0.005) 9.525 0.254 (0.375 0.010) 0.457 0.076 (0.018 0.003) 0.813 0.102 (0.032 0.004) 4.445 0.127 (0.175 0.005) 7.620 0.254 (0.300 0.010) 0.635 0.127 (0.025 0.005) 0.254 0.0127 (0.010 0.0005) 2.54 (0.10) 8.90 (0.3503) 1.65 (0.0649) 0.65 (0.0255) 3.302 0.051 (0.130 0.002) pin 1 mechanical dimensions lia130 lia130s
preliminary i ntegrated c ircuits d ivision for additional information please visit our website at: www.ixysic.com 11 preliminary lia130 ixys integrated circuits division makes no representations or warranties with respect to the accuracy or completeness of the co ntents of this publication and reserves the right to make changes to specifications and product descriptions at any time without notice. neither circuit patent licenses nor indemnity a re expressed or implied. except as set forth in ixys integrated circuits division?s standard terms and conditions of sale, ixys integrated circuits division assumes no liability whatsoever, a nd disclaims any express or implied warranty, relating to its products including, but not limited to, the implied warranty of merchantability, fitness for a particular purpose, or infri ngement of any intellectual property right. the products described in this document are not designed, intended, authorized or warranted for use as components in systems in tended for surgical implant into the body, or in other applications intended to support or sustain life, or where malfunction of ixys integrated circuits division?s product may resul t in direct physical harm, injury, or death to a person or severe property or environmental damage. ixys integrated circuits division reserves the right to discontinue or make changes to its p roducts at any time without notice. specification: ds-lia130-r00d ?copyright 2012, ixys integrated circuits division all rights reserved. printed in usa. 12/22/2012 dimensions mm (inches) user direction of feed notes: 1. dimensions carry tolerances of eia standard 481-2 2. tape complies with all notes for constant dimensions listed on page 5 of eia-481-2 embossment embossed carrier top cover tape thickness 0.102 max. (0.004 max.) 330.2 dia. (13.00 dia.) k 1 =4.20 (0.165) 0 k =4.90 (0.193) p=12.00 (0.472) w=16.00 (0.63) bo=10.30 (0.406) ao=10.30 (0.406) LIA130STR tape & reel

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