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this is information on a product in full production. october 2013 docid6518 rev 5 1/13 acs108 overvoltage protected ac switch (acs?) datasheet - production data features ? enables equipment to meet iec 61000-4-5 surge with overvoltage crowbar technology ? high noise immunity against static dv/dt and iec 61000-4-4 burst ? needs no external protection snubber or varistor ? reduces component count by up to 80% and interfaces directly with the micro-controller ? common package tab connection supports connection of several alternating current switches on the same cooling pad ? v cl gives headroom before clamping then crowbar action applications ? alternating current on/o ff static switching in appliances and industrial control systems ? driving low power high inductive or resistive loads like: ? relay, valve, solenoid, dispenser, ? pump, fan, low power motor, door lock ?lamp description the acs108 belongs to the ac switch range (built with a. s. d. ? technology). this high performance switch can cont rol a load of up to 0.8 a. the acs108 switch includes an overvoltage crowbar structure to absorb the inductive turn-off energy, and a gate level shifter driver to separate the digital controller from the main switch. it is triggered with a negative gate current flowing out of the gate pin. figure 1. functional diagram ?: a.s.d. is a registered trademark of stmicroelectronics tm: acs is a trademark of stmicroelectronics com out com g com out g sot-223 ACS108-6SN acs108-8sn to-92 acs108-6sa acs108-8sa table 1. device summary symbol value unit i t(rms) 0.8 a v drm , v rrm 600 and 800 v i gt 10 ma out com g com common drive reference to connect to the mains out output to connect to the load. g gate input to connect to the controller through gate resistor www.st.com
characteristics acs108 2/13 docid6518 rev 5 1 characteristics table 2. absolute maximum ratings (t amb = 25 c, unless otherwise specified) symbol parameter value unit i t(rms) on-state rms current (full sine wave) to-92 t amb = 64 c 0.45 a t lead = 76 c 0.8 a sot-223 s = 5 cm 2 t amb = 76 c t tab = 104 c i tsm non repetitive surge peak on-state current (full cycle sine wave, t j initial = 25 c) f = 60 hz t = 16.7 ms 13.7 a f = 50 hz t = 20 ms 13 i 2 t i2t value for fusing t p = 10 ms 1.1 a 2 s di/dt critical rate of rise of on-state current i g = 2xi gt , t r ? 100 ns f = 120 hz t j = 125 c 100 a/s v pp non repetitive mains peak mains voltage (1) 2kv i gm peak gate current t p = 20 s t j = 125 c 1 a v gm peak positive gate voltage t j = 125 c 10 v p g(av) average gate power dissipation t j = 125 c 0.1 w t stg t j storage junction temperature range operating junction temperature range -40 to +150 -30 to +125 c 1. according to test described by iec 61000-4-5 standard and figure 18 table 3. electrical characteristics (t j = 25 c, unless otherwise specified) symbol test conditions quadrant value unit i gt (1) v out = 12 v, r l = 33 ? ii - iii max. 10 ma v gt ii - iii max. 1 v v gd v out = v drm , r l = 3.3 k ??? t j = 125 c ii - iii min. 0.15 v i h i out = 100 ma max. 10 ma i l i g = 1.2 x i gt max. 25 ma dv/dt v out = 402 v, gate open, t j = 125 c min. 2000 v/s v out = 536 v, gate open, t j = 125 c min. 400 v/s (di/dt)c without snubber (15 v/s), t j = 125 c, turn-off time ? 20 ms min. 2 a/ms v cl i cl = 0.1 ma, t p = 1 ms, acs108-6 min. 650 v i cl = 0.1 ma, t p = 1 ms, acs108-8 min. 850 v 1. minimum i gt is guaranteed at 10% of i gt max
docid6518 rev 5 3/13 acs108 characteristics 13 table 4. static electrical characteristics symbol parameter and test conditions value unit v tm (1) i tm = 1.1 a, t p = 500 s t j = 25 c max. 1.3 v v t0 (1) threshold voltage t j = 125 c max. 0.85 v r d (1) dynamic resistance t j = 125 c max. 300 m ? i drm i rrm v out = v drm = v rrm t j = 25 c max. 2a t j = 125 c 0.2 ma 1. for both polarities of out referenced to com table 5. thermal resistance symbol parameter value unit r th (j-l) junction to lead (ac) to-92 max. 60 c/w r th (j-t) junction to tab (ac) sot-223 max. 25 r th (j-a) junction to ambient to-92 max. 150 s = 5 cm2 sot-223 max. 60 figure 2. maximum power dissipation versus on-state rms current figure 3. on-state rms current versus case temperature (sot223) p (w) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 = 180 i (a) t(rms) 180 i (a) t(rms) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0 25 50 75 100 125 =180 sot-223 tc c
characteristics acs108 4/13 docid6518 rev 5 figure 4. on-state rms current versus ambient temperature (free air convection) figure 5. relative variation of thermal impedance junction to ambient versus pulse duration i (a) t(rms) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0 25 50 75 100 125 single layer printed circuit board fr4 natural convection to-92 sot-223 =180 t a c k=[z th(j-a) /r th(j-a) ] 0.01 0.10 1.00 1.0e-03 1.0e-02 1.0e-01 1.0e+00 1.0e+01 1.0e+02 1.0e+03 z th(j-a) sot-223 copper surface area = 5cm2 to -92 sot-223 t (s) p figure 6. relative variation of holding and latching current versus junction temperature figure 7. relative variation of i gt and v gt versus junction temperature 0.0 0.5 1.0 1.5 2.0 2.5 3.0 -50 -25 0 25 50 75 100 125 i h ,i l [t j ]/i h ,i l [t j =25 c] i h i l t j (c) i gt ,v gt [t j ]/i gt ,v gt ,[t j =25 c] 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 -50 -25 0 25 50 75 100 125 i gt q2 v gt q2-q3 i gt q3 t j (c) figure 8. surge peak on-state current versus number of cycles figure 9. non repetitive surge peak on-state current for a sinusoidal pulse, and corresponding value of i2t i tsm (a) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 10 100 1000 non repetitive t j initial=25 c to-92 repetitive t lead = 76 c sot-223 repetitive t tab = 104 c one cycle t=20ms number of cycles i tsm (a), i2t (a2s) 1.e-01 1.e+00 1.e+01 1.e+02 1.e+03 0.01 0.10 1.00 10.00 i tsm i2t sinusoidal pulse, t p < 10 ms t j initial = 25 c (ms) t p
docid6518 rev 5 5/13 acs108 characteristics 13 figure 10. on-state characteristics (maximum values) figure 11. relative variation of critical rate of decrease of main current versus junction temperature i tm (a) 0.10 1.00 10.00 100.00 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 t j max.: v to = 0.85 v r d = 300 m tj=25 c tj=125 c v tm (v) (di/dt) [t ] / (di/dt) [t =125 c] cc jj 0.0 0.5 1.0 1.5 2.0 2.5 25 35 45 55 65 75 85 95 105 115 125 t (c) j figure 12. relative variation of static dv/dt immunity versus ju nction temperature (1) figure 13. relative variation of leakage current versus junction temperature 1. v d = v r = 402 v: typical values above 5 kv/s. beyond equipment capability dv/dt [t j ]/dv/dt[t j =125c] 0 1 2 3 4 5 25 50 75 100 125 v d =v r =536v t j (c) 1.0e-03 1.0e-02 1.0e-01 1.0e+00 25 50 75 100 125 i drm /i rrm [tj;v drm/ v rrm ]/i drm /i rrm [tj=125c;800 v] v drm =v rrm =600 v v drm =v rrm =800 v t j (c) figure 14. relative variation of critical rate of decrease of main current (di/dt)c versus (dv/dt)c figure 15. thermal resistance junction to ambient versus copper surface under tab (sot-223) (di/dt) c [(dv/dt) c ] / specified (di/dt) c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0.1 1.0 10.0 100.0 tj =125 c (dv/dt) c (v/s) r th(j-a) (c/w) 0 20 40 60 80 100 120 140 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 sot-223 s cu (cm2) printed circuit board fr4 copper thickness = 35 m
alternating current mains switch - basic application acs108 6/13 docid6518 rev 5 2 alternating current mains switch - basic application the acs108 switch is triggered by a negative ga te current flowing from the gate pin g. the switch can be driven directly by the digita l controller through a resistor as shown in figure 16 . thanks to its overvoltage protection and turn -off commutation performance, the acs108 switch can drive a small power high inductive lo ad with neither varistor nor additional turn-off snubber. figure 16. typical application schematic 2.1 protection against overvoltag e: the best choice is acs in comparison with standard triacs the acs108 is over-voltage self-protected, as specified by the new parameter v cl . this feature is useful in two oper ating conditions: in case of turn- off of very inductive load, and in case of surge voltage that can occur on the electrical network. 2.1.1 high inductive load switch-off: turn-off overvoltage clamping with high inductive and low rms current loads the rate of decrease of the current is very low. an overvoltage can occur when the gate current is removed and the out current is lower than i h . as shown in figure 17 , at the end of the last conduction half-cycle, the load current decreases . the load current reaches the holding current level i h , and the acs turns off . the water valve, as an inductive load (up to 15 h), reacts as a current generator and an overvoltage is created, which is clamped by the acs . the current flows through the acs avalanche and decreases linearly to zero. during this time, the voltage across the switch is limited to the clamping voltage v cl . the energy stored in the inductance of the load is dissipated in the clamping section that is designed for this purpose. when the energy has been dissipated, the acs voltage falls back to the mains voltage value (230 v rms, 50 hz) . ac mains acs108 valve power supply mcu v dd v ss rg 220 i t v t
docid6518 rev 5 7/13 acs108 alternating current mains switch - basic application 13 figure 17. switching off of a high inductive load - typical clamping capability of acs108 (t amb = 25 c) 2.1.2 alternating current main s transient voltage ruggedness the acs108 switch is able to withstand safely the ac mains transients either by clamping the low energy spikes or by br eaking-over when subjected to high energy shocks, even with high turn-on current rises. the test circuit shown in figure 18 is representative of the final acs108 application, and is also used to test the ac switch according to the iec 61000-4-5 standard conditions. thanks to the load limiting the current, the acs108 swit ch withstands the voltage spikes up to 2 kv above the peak mains voltage. the protection is based on an overvoltage crowbar technology. actually, the acs108 breaks over safely as shown in figure 19 . the acs108 recovers its blocking voltage capability after the surge (switch off back at the next zero crossing of the current). such non-repetitive tests can be done 10 times on each ac mains voltage polarity. figure 18. overvoltage ruggedness test circ uit for resistive and inductive loads, t amb = 25 c ( conditions equivalent to iec 61000-4-5 standard) 1 2 3 4 5 i h v cl 100 s/div i (5 ma/div) t v (200 v/div) t i h v cl v i 1 2 3 4 5 i h v cl v t i t 1 2 3 4 5 load 220 acs108 150 5 h +2 kv surge generator c c out g com mains voltage 230 v rms 50 hz i t v t
alternating current mains switch - basic application acs108 8/13 docid6518 rev 5 figure 19. typical current and voltage wave forms across the acs108 (+2 kv surge, iec 61000-4-5 standard) i t (4 a/div) v t (200 v/div) i t max = 17.2 a di t /dt = 1.8 a/s 500 ns/div
docid6518 rev 5 9/13 acs108 package information 13 3 package information ? epoxy meets ul94, v0 ? lead-free packages in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions a nd product status are available at: www.st.com. ecopack ? is an st trademark. figure 20. to-92 dimension definitions table 6. to-92 dimension values ref dimensions millimeters inches min. typ. max. min. typ. max. a1.35 0.053 b 4.70 0.185 c2.54 0.100 d 4.40 0.173 e 12.70 0.500 f 3.70 0.146 a 0.50 0.019 a f c b a de
package information acs108 10/13 docid6518 rev 5 figure 21. sot-223 dimension definitions figure 22. sot-223 footprint (dimensions in mm) table 7. sot-223 dimension values ref. dimensions millimeters inches min. typ. max. min. typ. max. a 1.80 0.071 a1 0.02 0.10 0.001 0.004 b 0.60 0.70 0.85 0.024 0.027 0.033 b1 2.90 3.00 3.15 0.114 0.118 0.124 c 0.24 0.26 0.35 0.009 0.010 0.014 d (1) 1. do not include mold flash or protrusions. mold flas h or protrusions shall not exceed 0.15mm (0.006inches) 6.30 6.50 6.70 0.248 0.256 0.264 e 2.3 0.090 e1 4.6 0.181 e (1) 3.30 3.50 3.70 0.130 0.138 0.146 h 6.70 7.00 7.30 0.264 0.276 0.287 v10 max a a1 e1 d b1 h e e 12 4 3 b v c 3.25 1.32 7.80 5.16 1.32 2.30 0.95
docid6518 rev 5 11/13 acs108 ordering information 13 4 ordering information figure 23. ordering information scheme table 8. ordering information order code marking package weight base qty delivery mode acs108-6sa acs1 086sa to-92 0.2 g 2500 bulk acs108-6sa-tr to-92 0.2 g 2000 tape and reel acs108-6sa-ap to-92 0.2 g 2000 ammopack ACS108-6SN-tr acs 108 6sn sot-223 0.11 g 1000 tape and reel acs108-8sa acs1 088sa to-92 0.2 g 2500 bulk acs108-8sa-tr to-92 0.2 g 2000 tape and reel acs108-8sa-ap to-92 0.2 g 2000 ammopack acs108-8sn-tr acs 108 8sn sot-223 0.11 g 1000 tape and reel acs 1 08 - 6 s a -tr ac switch series number of switches current voltage sensitivity package packing 08 = 0.8 a rms 6 = 600 v 8 = 800 v s = 10 ma a = to-92 n = sot-223 tr = tape and reel 7? (sot-223, 1000 pieces) 13? (to-92, 2000 pieces) ap = ammopack (to-92, 2000 pieces) blank = (to-92, 2500 pieces) bulk
revision history acs108 12/13 docid6518 rev 5 5 revision history table 9. document revision history date revision changes apr_2004 1 initial release. this datasheet covers order codes previously described in the datasheet for acs108-6s, doc id 11962, rev 3 december 2010. 21-jun-2005 2 marking information updated from acsxxxx to acs1xxx. 11-jul-2012 3 removed 500 v devices and added 600 v and 800 v devices. 27-sep-2013 4 corrected typographical error in figure 4 . 31-oct-2013 5 corrected character formatting issues in section 2.1.1 .
docid6518 rev 5 13/13 acs108 13 please read carefully: information in this document is provided solely in connection with st products. stmicroelectronics nv and its subsidiaries (?st ?) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described he rein at any time, without notice. all st products are sold pursuant to st?s terms and conditions of sale. purchasers are solely responsible for the choice, selection and use of the st products and services described herein, and st as sumes no liability whatsoever relating to the choice, selection or use of the st products and services described herein. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. i f any part of this document refers to any third party products or services it shall not be deemed a license grant by st for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoev er of such third party products or services or any intellectual property contained therein. unless otherwise set forth in st?s terms and conditions of sale st disclaims any express or implied warranty with respect to the use and/or sale of st products including without limitation implied warranties of merchantability, fitness for a parti cular purpose (and their equivalents under the laws of any jurisdiction), or infringement of any patent, copyright or other intellectual property right. st products are not designed or authorized for use in: (a) safety critical applications such as life supporting, active implanted devices or systems wi th product functional safety requirements; (b) aeronautic applications; (c) automotive applications or environments, and/or (d) aerospace applications or environments. where st products are not designed for such use, the purchaser shall use products at purchaser?s sole risk, even if st has been informed in writing of such usage, unless a product is expressly designated by st as being intended for ?automotive, automotive safety or medical? industry domains according to st product design specifications. products formally escc, qml or jan qualified are deemed suitable for use in aerospace by the corresponding governmental agency. resale of st products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by st for the st product or service described herein and shall not create or extend in any manner whatsoev er, any liability of st. st and the st logo are trademarks or registered trademarks of st in various countries. information in this document supersedes and replaces all information previously supplied. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners. ? 2013 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - philippines - singapore - spain - sweden - switzerland - united kingdom - united states of america www.st.com

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