unisonic technologies co., ltd gf2140 linear integrated circuit www.unisonic.com.tw 1 of 4 copyright ? 2008 unisonic technologies co., ltd qw-r121-016.b low power two-wire ground fault interrupter ? description as a low power controller for ac output appliance leakage current interrupters, the utc gf2140 can detect hazardous current paths to ground, and trigger scr to protect. ? features * directly powered from the ac line * build-in bridge rectifer * interface to scr * adjustable trip current and time delay * minimum external components * for two-wire system * be used in 110v or 220v system sop-8 lead-free: gf2140l halogen-free: gf2140g ? ordering information ordering number normal lead free halogen free package packing gf2140-s08-r GF2140L-S08-R gf2140g-s08-r sop-8 tape reel gf2140-s08-t gf2140l-s08-t gf2140g-s08-t sop-8 tube
gf2140 linear integrated circuit unisonic technologies co., ltd 2 of 4 www.unisonic.com.tw qw-r121-016.b ? pin connections ? pin description pin # pin name i/o pin function 1 rsct o output of leakage current first 2 vfb i input of leakage current 3 v ref i reference voltage 4 gnd ground 5 line i line input 6 neutral i neutral input 7 scr trigger scr trigger 8 c delay o the delay time
gf2140 linear integrated circuit unisonic technologies co., ltd 3 of 4 www.unisonic.com.tw qw-r121-016.b ? electrical characteristics (i line =1.2ma, t a =25 ,r set =290k ? ) parameter symbol conditions min typ max units shunt regulator (pin 5-4) i 2-3 =11 a 6.1 6.5 7.5 regulator voltage v reg i line =700 a, i 2-3 =9 a 6.1 6.5 7.5 v sense amplifier (pin 2-3) offset voltage v i(off) design value -3.0 0 +3.0 mv input bias current i i(bias) design value 15 30 na gain bandwidth f t design value 3.44 mh z scr trigger (pin 7-6) i 2-3 =9 a 0 0.1 10 mv output voltage v out i 2-3 =11 a 1.4 2.0 2.6 v output current i out v 7-6 =0v, i 2-3 =11 a 300 420 600 a output resistance z o v 5-6 =open, i 2-3 =0 4.0 4.7 5.4 k ? reference voltage (pin 3-4) reference voltage v ref i line =700 a 2.6 2.9 3.4 v delay time (pin 8-4) delay current i d i 2-3 =11 a 23 30 43 a delay time t d c 8-4 =20nf 2.0 ms
gf2140 linear integrated circuit unisonic technologies co., ltd 4 of 4 www.unisonic.com.tw qw-r121-016.b ? typical application circuit utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior writ ten consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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