LH1540ACD, LH1540ACDtr www.vishay.com vishay semiconductors rev. 1.7, 25-jul-11 1 document number: 83843 for technical questions, contact: optocoupleranswers@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 1 form a sop solid-state relay description the lh1540 relay is an spst normally open switch (1 form a) in small-outline pack ages (sop). it requires a minimal amount of led drive current to operate, making them ideal for battery powe red and power consumption sensitive applications. the relays are constructed using a gaalas led for actuation control and an integrated monolithic die for the switch output. the die, fabricated in a high-voltage dielectrically isolated bcdm os technology, is comprised of a photodiode array, switch-c ontrol circuitry, and mosfet switches. in addition, the re lays employ cu rrent-limiting circuitry enabling it to pass li ghtning surge testing as per ansi/tia-968-b and other re gulatory surge requirements when overvoltage protection is provided. features ? high-speed operation ? isolation test voltage 2500 v rms ? current-limit protection ? high surge capability ? clean, bounce-free switching ? extremely low power consumption ? high-reliability monolithic detector ? surface-mountable ? compliant to rohs directive 2002/95/ec and in accordance to weee 2002/96/ec applications ? pcmcia type 2 cards ? battery powered switch applications ? general telecom switching ? telephone line interface - on/off hook - ring relay - ground start ? programmable controllers ? instrumentation 85 1 2 3 4 s ' s nc heat s ink s s s s ' i179047 agency approvals ul1577: file no. e52744 system code s csa: certification 093751 din en: 60747-5-2 (vde 0884)/60747-5-5 (pending), available with option 1 fimko: approval ordering information LH1540ACDtr part number electr. variation package config. tape and reel package ul, csa, fimko sop-8, tubes LH1540ACD sop-8, tape and reel LH1540ACDtr s op-# 8.4 mm
LH1540ACD, LH1540ACDtr www.vishay.com vishay semiconductors rev. 1.7, 25-jul-11 2 document number: 83843 for technical questions, contact: optocoupleranswers@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 note ? stresses in excess of the absolute maximum ratings can cause perm anent damage to the device. functional operation of the devic e is not implied at these or any other conditions in excess of those give n in the operational sections of this document. exposure to abs olute maximum ratings for extended periods of time can adversely affect reliability. note ? minimum and maximum values are testing requirements. typical valu es are characteristics of the device and are the result of en gineering evaluations. typical values are for information only and are not part of the testing requirements. absolute maximum ratings (t amb = 25 c, unless otherwise specified) parameter test condition symbol value unit input led input ratings: cont inuous forward current i f 50 ma led input ratings: reverse voltage v r 5v output output operation: dc or peak ac load voltage i l ? 50 a v l 350 v continuous dc load current: one pole operating i l 110 ma ssr ambient operating temperature range t amb - 40 to + 85 c storage temperature range t stg - 55 to + 150 c pin soldering temperature t = 5 s max t sld 260 c input/output isolation voltage v iso 2500 v rms power dissipation p diss 550 mw thermal resistance, junction to ambient r thja 200 c/w electrical characteristics (t amb = 25 c, unless otherwise specified) parameter test condition symbol min. typ. max. unit input led forward current for switch turn-on i l = 100 ma, t = 10 ms i fon 0.6 1 ma led forward current for switch turn-off v l = 300 v, t = 100 ms i foff 0.001 0.1 ma led forward voltage i f = 1.5 ma v f 0.80 1.15 1.40 v output on-resistance: pin 5 () to 8 () i f = 1.5 ma, i l = 50 ma r on 12 18 25 ? current limit i f = 1.5 ma, t = 5 ms, v l = 7 v i lmt 170 210 270 ma output off-state leakage current i f = 0 ma, v l = 100 v 0.7 200 na i f = 0 ma, v l = 350 v 1 ? a switching characteristics (t amb = 25 c, unless otherwise specified) parameter test condition symbol min. typ. max. unit turn-on time i f = 1.5 ma, i l = 50 ma t on 0.6 ms i f = 5 ma, i l = 50 ma t on 0.3 1 ms turn-off time i f = 1.5 ma, i l = 50 ma t off 0.7 ms i f = 5 ma, i l = 50 ma t off 0.7 1.2 ms recommended operating conditions parameter test condition symbol min. typ. max. unit led forward current for switch turn-on t amb = - 40 c to + 85 c i fon 1.5 20 ma
LH1540ACD, LH1540ACDtr www.vishay.com vishay semiconductors rev. 1.7, 25-jul-11 3 document number: 83843 for technical questions, contact: optocoupleranswers@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 functional description figure 1 shows the switch char acteristics of the relays. the relay exhibits an on-resistance that is exceptionally linear through the origin and up to the knee current (i k ). beyond i k , the incremental resistance decreases, minimizing internal power dissipation. overload currents are clamped at i lmt by the internal current-limit circuitry. the current-limiting circuitry exhibits a negative te mperature coefficient, thereby reducing the current- limit va lue when relay temperature is increased. an extended clamp condition, which increases relay temperature, decreases the current-limit value, resulting in a current fold back characteristic. when the overload is removed, the relay resumes its normal on-resistance characteristic. fig. 1 - typical ac/dc on characteristics in a 1 form a relay, to turn the relay on, forward current is applied to the led. the am ount of current applied determines the amount of light produced for the photodiode array. this photodiode array de velops a drive voltage for the mosfet switch outputs. for hi gh temperature or high-load current operations, more led current is required. package dimensions in millimeters package marking (example) note ? tape and reel suffix (tr) is not part of the package marking. iLH1540ACD_01 i lmt i lmt i k i k -v +v +i -i - 210 ma 210 ma 10 10 16 16 60 ma 60 ma 1.5 v - 1.5 v i178023 0 to 10 7.39 0.25 40 8.53 0.25 0.38 0.05 0.15 typ. 0.93 0.05 10 5.84 5.59 5.72 5.46 10 10 10 0.41 typ. 1.09 0.84 1.27 typ. 1.07 ref. pin 1 i.d. 0.000 0.005 lead coplanarity 0.08 max. 8 7 6 5 1 2 3 4 3.62 1.88 iso method a lh1540 v yww s 68
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