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1/34 XC6408 series 28v operation voltage regula tor with voltage detector ? supply current vs. input voltage general description the XC6408 series is a positive voltage regulator ic manufactured using cmos process with 28v operation voltage. the series consists of a voltage reference, an error amplifier, a current limiter, a thermal shutdown circuit and a phase compensation cir cuit plus a driver transistor. the output volt age and the detect voltage are user selectable in 0.1v increments. the over current protection circuit and the thermal shutdown circuit are built-in. these two protecti on circuits will operate when the output c urrent reaches current limit level or the junction temperature reaches temperature limit leve l. the XC6408d series monitors its outpu t voltage and provides reset signal if its output voltage falls below the pre-set voltage. this reset time (release delay time) can be set by an external capacitor. the XC6408e series monitors an external power supply and enables the output to be turned off and the ic becomes a stand-by mode. a pplications ? ? note book computers, pdas ? ? car audio, car navigation systems ? ? home appliances ? ? audio visuals, digital cameras, video cameras ? ? cordless phones, wireless communication features max output current 150ma ? (v in =v rout +3.0v) dropout voltage 175mv @i out =20ma (v rout =12v) input voltage range 2.0v ? 28.0v output voltage range 2.0v ? 18.0v (0.1v increments) detect voltage range 2.0v ? 16.0v (0.1v increments) high accuracy(regulator) ? 2% (detector) ? 2.5% low power consumption XC6408d 9.5 a (typ.) v rout =12v, v df =11v XC6408e 8 a (typ.) v rout =12v, v df =11v operating temperature -40 ?? +85 ? packages sot-89-5, sot-25, usp-6c environmentally friendly eu rohs compliant, pb free typical application circuits etr0331-004a typical performance characteristics XC6408e (v rout =12.0v, v df =11.0v) 0 5 10 15 0 4 8 1216202428 v in (v) i ss (ua) XC6408d series XC6408e series input voltage: v in (v) supply current: i ss ( a)
2/34 XC6408 series pin number sot-89-5 sot-25 usp-6c pin name functions 1 5 1 v rout vr output 2 2 5 v ss ground v sen sense 3 4 3 cd delay capacitor 4 3 4 v dout vd output 5 1 6 v in power input - - 2 nc no connection pin configuration pin assignment * the dissipation pad for the usp-6c package should be solder-plated in recommended mount pattern and metal masking to enhance mounting strength an d heat release. if the pad needs to be connected to other pins, it should be connected to the v ss (no. 5) pin. nc
3/34 XC6408 series ? selection guide ?? XC6408d series v rout pin voltage detection, release delay capacitor ?? XC6408e series v sen pin for external voltage detection, auto power on/off function ? ordering information ?? v rout v df ?? v rout v df 01 2.50 2.10 11 02 3.00 2.50 12 03 3.30 2.70 13 04 3.30 2.80 14 05 5.00 4.10 15 06 5.00 4.20 16 07 8.00 6.80 17 08 9.00 5.00 18 09 9.00 7.50 19 10 12.00 10.00 20 designator description symbol description ? v dout output configuration n open drain ?? output voltage detect voltage - sequential number relating to output voltage and detect voltage (refer to the chart below) v rout output voltage range: 2.0v ? 18.0v v df detect voltage range: 2.0v ? 16.0v output voltage and detect voltage can be set in 0.1v increments er-g usp-6c mr-g sot-25 ?? - ? packages taping type (*2) pr-g sot-89-5 ? product classification XC6408d ????? - ? *1 vd output logic: detect is low, release is high. (*1) the ?-g? suffix indicates that the products are hal ogen and antimony free as well as being fully rohs compliant. (*2) the device orientation is fixed in its em bossed tape pocket. for reverse orientation, please contact your local torex sales o ffice or representative. ( standard orientation : r-, reverse orientation : l-) designator ?? (no. 01 ? 20 is standard voltage) for other voltage, please contact your loca l torex sales office or representative.
4/34 XC6408 series ?? v rout v df ?? v rout v df 01 2.50 2.10 11 2.50 2.70 02 3.00 2.50 12 2.50 2.80 03 3.30 2.70 13 3.00 4.10 04 3.30 2.80 14 3.00 4.20 05 5.00 4.10 15 3.30 4.10 06 5.00 4.20 16 3.30 4.20 07 8.00 6.80 17 5.00 5.60 08 9.00 5.00 18 5.00 6.80 09 9.00 7.50 19 9.00 10.00 10 12.00 10.00 20 12.00 15.00 designator description symbol description ? v dout output configuration n open drain ?? output voltage detect voltage - sequential number relating to output voltage and detect voltage (refer to the chart below) v rout output voltage range: 2.0v ? 18.0v v df detect voltage range: 2.0v ? 16.0v output voltage and detect voltage can be set in 0.1v increments er-g usp-6c mr-g sot-25 ?? - ? packages taping type (*2) pr-g sot-89-5 for other voltage, please contact your loca l torex sales office or representative. XC6408e ????? - ? *1 vd output logic: detect is low, release is high. (*1) the ?-g? suffix indicates that the products are hal ogen and antimony free as well as being fully rohs compliant. (*2) the device orientation is fixed in its em bossed tape pocket. for reverse orientation, please contact your local torex sales o ffice or representative. ( standard orientation : r-, reverse orientation : l-) designator ?? (no. 01 ? 20 is standard voltage) ? product classification
5/34 XC6408 series ? ? ? block diagrams XC6408 d type XC6408 e type
6/34 XC6408 series ? XC6408d series ? XC6408e parameter symbol ratings units input voltage v in v ss -0.3 ? 30 v delay capacitor voltage v cd v ss -0.3 ? v in +0.3 v delay capacitor current i cd 5.0 ma v rout output current i rout 210 *1 ma v dout output current i dout 20 ma v rout output voltage v rout v ss -0.3 ? v in +0.3 v v dout output voltage v dout v ss -0.3 ? 30 v 120 usp-6c 1000 (pcb mounted) (*2) 250 sot-25 600 (pcb mounted) (*2) 500 power dissipation sot-89-5 pd 1300 (pcb mounted) (*2) mw operating temperat ure range topr -40 ? +85 o c storage temperature range tstg -55 ? +125 o c parameter symbol ratings units input voltage v in v ss -0.3 ? 30 v sense voltage v sen v ss -0.3 ? 30 v v rout output current i rout 210 *1 ma v dout output current i dout 20 ma v rout output voltage v rout v ss -0.3 ? v in +0.3 v v dout output voltage v dout v ss -0.3 ? 30 v 120 usp-6c 1000 (pcb mounted) (*2) 250 sot-25 600 (pcb mounted) (*2) 500 power dissipation sot-89-5 pd 1300 (pcb mounted) (*2) mw operating temperat ure range topr -40 ? +85 o c storage temperature range tstg -55 ? +125 o c a bsolute maximum ratings *1: i out ? pd / (v in -v rout ) *2: the power dissipation figure shown is pcb mounted. please refer to page 30 ? 32 for details. *1: i out ? pd / (v in -v rout ) *2: the power dissipation figure shown is pcb mounted. please refer to page 30 ? 32 for details.
7/34 XC6408 series parameter symbol conditions min. typ. max. units circuit 2.0v Q v rout(t) Q 5.0v (*1) 1.5 9.6 20.5 5.1v Q v rout(t) Q 12.0v (*1) 2.3 10 25.3 supply current i ss 12.1v Q v rout(t) Q 18.0v (*1) 2.5 14.3 28.1 a ? vr output voltage v rout(e) (*2) i out 20ma v rout(t) 0.98 (e-1) (*1) v rout(t) (e-1) (*1) v rout(t) 1.02 (e-1) (*1) v ? v in =v rout(t) +3.0v, v rout (t) R 3.0v (*1) 150 - - vr maximum output current i rout max v in =v rout(t) +3.0v, v rout(t) 3.0v (*1) 100 - - ma ? 1ma Q i rout Q 50ma 2.0v Q v rout(t) Q 5.0v (*1) - 25 50 1ma Q i rout Q 50ma 5.1v Q v rout (t) Q 12.0v (*1) - 60 120 load regulation v rout 1ma Q i rout Q 50ma 12.1v Q v rout (t) Q 18.0v (*1) - 90 160 mv ? dropout voltage1 (*3) vdif1 i rout 20ma, - e-4 mv ? dropout voltage2 (*3) vdif2 i rout 1 100ma - e-5 mv ? line regulation1 v rout / v in ? v rout(t) v rout(t) +2.0v Q v in Q 28v (*1) i rout =5ma 0.01 0.05 0.10 %/v ? line regulation2 v rout / v in ? v rout(t) v rout(t) +2.0v Q v in Q 28v (*1) i rout =13ma 0.03 0.15 0.30 %/v ? input voltage v in 2.0 - 28.0 v output voltage temperature characteristics v rout / t opr ? v rout(t) i rout 20ma, -40 Q to p r Q 85 - ? 100 - ppm/ ? ? regulator block short current ir short - 30 - ma ? vd detect voltage v df(e) (*2) v df(t) 0.975 (e-2) (*1) v df(t) (e-2) (*1) v df(t) 1.025 (e-2) (*1) v ? hysteresis width v hys e-3 v ? output current i dout v in =3.0v, cd=0v ,v ds =0.5v 0.3 0.5 - ma ? output leakage current i d leak v in =28v, cd=0v ,v ds 28v - - 0.1 a ? detect voltage temperature characteristics v dout / t opr ? v dout -40 Q to p r Q 85 - ? 100 - ppm/ ? ? detector block release delay time t plh cap=1000pf 3.4 6.0 15.6 ms ? thermal shutdown detect temperature t tsd junction temperature - 150 - ?? ? thermal shutdown release temperature t tsr junction temperature - 125 - ?? ? hysteresis width t tsr- t tsd - 25 - ?? ? electrical characteristics ? XC6408d series ta = 2 5 ? *1: v rout(t) : nominal output voltage, v df(t) : nominal detect voltage *2: v rout(e) : effective output voltage , v df(e) : effective detect voltage *3: vdif 1 {v in1 {*5} v rout1 {*4} } *4: v rout1 : in case of v rout(t) ? 3.0v, the v out1 is equal to 98% of the i rout(t) when a stabilized input voltage is applied in v rout(t) +3.0v. in case of v rout(t) ? 3.0v, the v out1 is equal to 98% of the i rout(t) when a stabilized input voltage is applied in v rout(t) +2.0v. *5: v in1 the input voltage when v rout1 appears as input voltage is gradually decreased. *6: unless otherwise stated, v in =v rout(t) +2.0v
8/34 XC6408 series parameter symbol conditions min. typ. max. units circuit v sen =v df(t) +2v 2.0v ? v rout(t) ? 5.0v (*1) 1.5 6.5 17.6 v sen =v df(t) +2v 5.1v ? v rout(t) ? 12.0v (*1) 2.1 8 17.6 supply current i ss v sen =v df(t) +2v 12.1v ? v rout(t) ? 18.0v (*1) 2.2 8.5 17.6 a ? vd supply current i dss v sen =v ss - 1.5 3.9 a ? vr output voltage v rout(e) (*2) v sen =v df(t) +2.0v (*1) i rout 1 20ma v rout(t) 0.98 (e-1) (*1) v rout(t) (e-1) (*1) v rout(t) 1.02 (e-1) (*1) v ? v in =v rout(t) +3.0v (*1) v sen =v df(t) +2.0v v rout(t) ? 3.0v 150 - - vr maximum output current i rout max v in =v rout(t) +3.0v v sen =v df(t) +2.0v v rout(t) ? 3.0v (*1) 100 - - ma ? v sen =v df(t) +2.0v 1ma ? i rout ? 50ma 2.0 ? v rout(t) ? 5.0v (*1) - 25 50 v sen =v df(t) +2.0v 1ma ? i rout ? 50ma 5.1 ? v rout(t) ? 12.0v (*1) - 60 120 load regulation ? v rout v sen =v df(t) +2.0v 1ma ? i rout ? 50ma 12.1 ? v rout(t) ? 18.0v (*1) - 90 160 mv ? dropout voltage1 (*3) vdif1 i rout 1 20ma - e-4 mv ? dropout voltage2 (*3) vdif2 i rout 1 100ma - e-5 mv ? line regulation1 ? v rout / ? v in ~ v rout(t) v sen =v df(t) +2.0v v rout(t) +2.0v ? v in ? 28v (*1) i rout =5ma 0.01 0.05 0.10 %/v ? line regulation2 ? v rout / ? vi in ~ v rout(t) v sen =v df(t) +2.0v v rout (t) +2.0v ? v in ? 28v (*1) i rout =13ma 0.03 0.15 0.30 %/v ? input voltage v in 2.0 - 28.0 v output voltage temperature characteristics ? v rout / ? topr ~ v rout(t) v sen =v df(t) +2.0v (*1) i rout 1 20ma -40 ?? topr ? 85 ? - ? 100 - ppm / ? ? regulator block short current i r short v sen =v df(t) +2.0v (*1) - 30 - ma ? vd detect voltage v df(e) (*2) v df(t) x 0.975 (e-2) (*1) v df(t) (e-2) (*1) v df(t) 1.025 (e-2) (*1) v ? hysteresis width v hys e-3 v ? output current i dout v in =3.0v, v sen =v df(t) -0.4v (*1) v ds =0.5v 0.3 0.5 - ma ? output leakage current i d leak v in =28v,v sen =0v,v ds 1 28v - - 0.1 a ? detect voltage temperature characteristics ? v dout / ? t opr ~ v dout -40 ?? topr ? 85 ? - ? 100 - ppm / ? ? detector block sense input current i sense v sen =v df(t) +2v (*1) e-6 a ? thermal shutdown detect temperature t tsd junction temperature - 150 - ? ? thermal shutdown release temperature t tsr junction temperature - 125 - ? ? hysteresis width t tsr- t tsd - 25 - ? ? electrical characteristics (continued) ? XC6408e series ta = 2 5 ? *1: v rout(t) : nominal output voltage, v df(t) : nominal detect voltage *2: v rout(e) : effective output voltage , v df(e) : effective detect voltage *3: vdif 1 {v in1 {*5} v rout1 {*4} } *4: v rout1 : in case of v rout(t) ? 3.0v, the v out1 is equal to 98% of the i rout(t) when a stabilized input voltage is applied in v rout(t) +3.0v. in case of v rout(t) ? 3.0v, the v out1 is equal to 98% of the i rout(t) when a stabilized input voltage is applied in v rout(t) +2.0v. *5: v in1 the input voltage when v rout1 appears as input voltage is gradually decreased. *6: unless otherwise stated, v in =v rout(t) +2.0v
9/34 XC6408 series electrical characteristics (continued) ? voltage chart (*1)v rout : accuracy ? 2%, v df : accuracy ? 2.5% symbol e-1 e-2 e-3 e-4 e-5 e-6 parameter nominal v df detect voltage v rout output voltage output voltage (v) detect voltage (v) hysteresis width (v) dropout voltage1 i rout =20ma (mv) dropout voltage2 i rout =100ma (mv) sense input current a v rout(e) v df(e) v hys vdif1 vdif2 isense v rout(t) v df(t) min. max. min. max. min. max. typ max typ max min max 2.0 1.960 2.040 1.950 2.050 2.1 2.058 2.142 2.048 2.153 500 680 2300 3300 2.2 2.156 2.244 2.145 2.255 2.3 2.254 2.346 2.243 2.358 2.4 2.352 2.448 2.340 2.460 430 600 1950 2950 2.5 2.450 2.550 2.438 2.563 2.6 2.548 2.652 2.535 2.665 2.7 2.646 2.754 2.633 2.768 2.8 2.744 2.856 2.730 2.870 2.9 2.842 2.958 2.828 2.973 360 530 1550 2550 3.0 2.940 3.060 2.925 3.075 3.1 3.038 3.162 3.023 3.178 3.2 3.136 3.264 3.120 3.280 3.3 3.234 3.366 3.218 3.383 3.4 3.332 3.468 3.315 3.485 3.5 3.430 3.570 3.413 3.588 3.6 3.528 3.672 3.510 3.690 3.7 3.626 3.774 3.608 3.793 3.8 3.724 3.876 3.705 3.895 3.9 3.822 3.978 3.803 3.998 250 380 1100 1800 4.0 3.920 4.080 3.900 4.100 4.1 4.018 4.182 3.998 4.203 4.2 4.116 4.284 4.095 4.305 4.3 4.214 4.386 4.193 4.408 4.4 4.312 4.488 4.290 4.510 4.5 4.410 4.590 4.388 4.613 4.6 4.508 4.692 4.485 4.715 4.7 4.606 4.794 4.583 4.818 4.8 4.704 4.896 4.680 4.920 4.9 4.802 4.998 4.778 5.023 230 350 850 1650 0.1 2.2 5.0 4.900 5.100 4.875 5.125 5.1 4.998 5.202 4.973 5.228 5.2 5.096 5.304 5.070 5.330 5.3 5.194 5.406 5.168 5.433 5.4 5.292 5.508 5.265 5.535 5.5 5.390 5.610 5.363 5.638 5.6 5.488 5.712 5.460 5.740 5.7 5.586 5.814 5.558 5.843 5.8 5.684 5.916 5.655 5.945 5.9 5.782 6.018 5.753 6.048 v df(e) 2 v df(e) 8 180 300 750 1350 0.1 4.1
10/34 XC6408 series electrical characteristics (continued) ? voltage chart (continued) (*1)v rout : accuracy ? 2%, v df : accuracy ? 2.5% symbol e-1 e-2 e-3 e-4 e-5 e-6 parameter nominal v df detect voltage v rout output voltage output voltage (v) detect voltage (v) hysteresis width (v) dropout voltage1 i rout =20ma (mv) dropout voltage2 i rout =100ma (mv) sense input current a v rout(e) v df(e) v hys vdif1 vdif2 isense v rout(t) v df(t) min. max. min. max. min. max. typ max typ max min max 6.0 5.880 6.120 5.850 6.150 6.1 5.978 6.222 5.948 6.253 6.2 6.076 6.324 6.045 6.355 6.3 6.174 6.426 6.143 6.458 6.4 6.272 6.528 6.240 6.560 180 300 750 1350 6.5 6.370 6.630 6.338 6.663 6.6 6.468 6.732 6.435 6.765 6.7 6.566 6.834 6.533 6.868 6.8 6.664 6.936 6.630 6.970 6.9 6.762 7.038 6.728 7.073 7.0 6.860 7.140 6.825 7.175 7.1 6.958 7.242 6.923 7.278 7.2 7.056 7.344 7.020 7.380 7.3 7.154 7.446 7.118 7.483 7.4 7.252 7.548 7.215 7.585 7.5 7.350 7.650 7.313 7.688 7.6 7.448 7.752 7.410 7.790 7.7 7.546 7.854 7.508 7.893 7.8 7.644 7.956 7.605 7.995 7.9 7.742 8.058 7.703 8.098 8.0 7.840 8.160 7.800 8.200 160 260 650 1150 8.1 7.938 8.262 7.898 8.303 8.2 8.036 8.364 7.995 8.405 8.3 8.134 8.466 8.093 8.508 8.4 8.232 8.568 8.190 8.610 8.5 8.330 8.670 8.288 8.713 8.6 8.428 8.772 8.385 8.815 8.7 8.526 8.874 8.483 8.918 8.8 8.624 8.976 8.580 9.020 8.9 8.722 9.078 8.678 9.123 9.0 8.820 9.180 8.775 9.225 9.1 8.918 9.282 8.873 9.328 9.2 9.016 9.384 8.970 9.430 9.3 9.114 9.486 9.068 9.533 9.4 9.212 9.588 9.165 9.635 9.5 9.310 9.690 9.263 9.738 9.6 9.408 9.792 9.360 9.840 9.7 9.506 9.894 9.458 9.943 9.8 9.604 9.996 9.555 10.045 9.9 9.702 10.098 9.653 10.148 10.0 9.800 10.200 9.750 10.250 v df(e) 2 v df(e) 8 160 230 450 950 0.1 4.1
11/34 XC6408 series (*1)v rout : accuracy ? 2%, v df : accuracy ? 2.5% symbol e-1 e-2 e-3 e-4 e-5 e-6 parameter nominal v df detect voltage v rout output voltage output voltage (v) detect voltage (v) hysteresis width (v) dropout voltage1 i rout =20ma (mv) dropout voltage2 i rout =100ma (mv) sense input current a v rout(e) v df(e) v hys vdif1 vdif2 isense v rout(t) v df(t) min. max. min. min. min. min. typ max typ max min max 10.1 9.898 10.302 9.848 10.353 10.2 9.996 10.404 9.945 10.455 10.3 10.094 10.506 10.043 10.558 10.4 10.192 10.608 10.140 10.660 10.5 10.290 10.710 10.238 10.763 10.6 10.388 10.812 10.335 10.865 10.7 10.486 10.914 10.433 10.968 10.8 10.584 11.016 10.530 11.070 10.9 10.682 11.118 10.628 11.173 v df(e) 2 v df(e) 8 11.0 10.780 11.220 10.725 11.275 11.1 10.878 11.322 10.823 11.378 11.2 10.976 11.424 10.920 11.480 11.3 11.074 11.526 11.018 11.583 11.4 11.172 11.628 11.115 11.685 11.5 11.270 11.730 11.213 11.788 11.6 11.368 11.832 11.310 11.890 11.7 11.466 11.934 11.408 11.993 11.8 11.564 12.036 11.505 12.095 11.9 11.662 12.138 11.603 12.198 12.0 11.760 12.240 11.700 12.300 150 200 400 850 0.1 4.1 12.1 11.858 12.342 11.798 12.403 12.2 11.956 12.444 11.895 12.505 12.3 12.054 12.546 11.993 12.608 12.4 12.152 12.648 12.090 12.710 12.5 12.250 12.750 12.188 12.813 12.6 12.348 12.852 12.285 12.915 12.7 12.446 12.954 12.383 13.018 12.8 12.544 13.056 12.480 13.120 12.9 12.642 13.158 12.578 13.223 13.0 12.740 13.260 12.675 13.325 13.1 12.838 13.362 12.773 13.428 13.2 12.936 13.464 12.870 13.530 13.3 13.034 13.566 12.968 13.633 13.4 13.132 13.668 13.065 13.735 13.5 13.230 13.770 13.163 13.838 13.6 13.328 13.872 13.260 13.940 13.7 13.426 13.974 13.358 14.043 13.8 13.524 14.076 13.455 14.145 13.9 13.622 14.178 13.553 14.248 14.0 13.720 14.280 13.650 14.350 v df(e) 1 v df(e) 7 120 170 350 800 0.6 6.6 electrical characteristics ( continued )
12/34 XC6408 series (*1)v rout : accuracy ? 2%, v df : accuracy ? 2.5% symbol e-1 e-2 e-3 e-4 e-5 e-6 parameter nominal v df detect voltage v rout output voltage output voltage (v) detect voltage (v) hysteresis width (v) dropout voltage1 i rout =20ma (mv) dropout voltage2 i rout =100ma (mv) sense input current a v rout(e) v df(e) v hys vdif1 vdif2 isense v rout(t) v df(t) min. max. min. max. min. max. typ max typ max min max 14.1 13.818 14.382 13.748 14.453 14.2 13.916 14.484 13.845 14.555 14.3 14.014 14.586 13.943 14.658 14.4 14.112 14.688 14.040 14.760 14.5 14.210 14.790 14.138 14.863 14.6 14.308 14.892 14.235 14.965 14.7 14.406 14.994 14.333 15.068 14.8 14.504 15.096 14.430 15.170 14.9 14.602 15.198 14.528 15.273 15.0 14.700 15.300 14.625 15.375 15.1 14.798 15.402 14.723 15.478 15.2 14.896 15.504 14.820 15.580 15.3 14.994 15.606 14.918 15.683 15.4 15.092 15.708 15.015 15.785 15.5 15.190 15.810 15.113 15.888 15.6 15.288 15.912 15.210 15.990 15.7 15.386 16.014 15.308 16.093 15.8 15.484 16.116 15.405 16.195 15.9 15.582 16.218 15.503 16.298 16.0 15.680 16.320 15.600 16.400 v df(e) 1 v df(e) 7 0.6 6.6 16.1 15.778 16.422 16.2 15.876 16.524 16.3 15.974 16.626 16.4 16.072 16.728 16.5 16.170 16.830 16.6 16.268 16.932 16.7 16.366 17.034 16.8 16.464 17.136 16.9 16.562 17.238 17.0 16.660 17.340 17.1 16.758 17.442 17.2 16.856 17.544 17.3 16.954 17.646 17.4 17.052 17.748 17.5 17.150 17.850 17.6 17.248 17.952 17.7 17.346 18.054 17.8 17.444 18.156 17.9 17.542 18.258 18.0 17.640 18.360 120 170 350 800 electrical characteristics ( continued )
13/34 XC6408 series ? ? operational explanation the voltage divided by resistors r11 & r12 is compared with the internal reference voltage by the error amplifier. the p-channel mosfet which is connected to the v rout pin is then driven by the subsequent output signal. the output voltage at the v rout pin is controlled and stabilized by a syst em of negative feedback. the current limit circuit, short protect circuit and thermal protection circuit operate in relation to the level of output current and heat generation. for the XC6408e, regulator operation returns active state when v sen pin voltage rises higher than the release voltage (*when v sen pin voltage is higher than detect voltage + hysteresis voltage). the XC6408 series includes a current fold-back circuit as a short circuit protection. when the load current reaches the current limit, the current fold-back circuit starts to operate. as a result, the output voltage drops further and output curre nt decreases. when the v rout pin is short-circuited, a flow current minimizes to around 30ma. when the junction temperature of t he built-in driver transistor reaches the temperature limit level (150 ? typ.), the thermal shutdown circuit operates and the driver transistor will be set to off. the ic resumes its operation when the thermal shutdown function is released and the ic?s operation is automatically restored because the junction temperature drops to the level of the thermal shutdown release voltage. for the stable operation of the ic, over 2.0v of input voltage is necessary. the output voltage may not be generated normally if the input voltage is less than 2.0v. XC6408 d type XC6408 e type
14/34 XC6408 series 10 100 1000 10000 100000 10 100 1000 10000 cd connencted capacitance (pf) release delay time(s) (XC6408d and XC6408e) the detector function of the XC6408d/e series has hysteres is, and when the detected voltage ri ses higher than the release voltage (typically about 105% of the detect vo ltage), the output of the vdout pin inverts. (XC6408d) the detector function of the xc64 08d series is connected to the v rout pin inside the ic and detects the v rout output voltage. the voltage divided by the detector?s internal resistance which is connected to the v rout pin is compared to the ic internal reference voltage, and if the voltage of the v rout pin falls below the threshold value, low level signal is output from v dout . a capacitor (cd) can be connected to the cd pin to add a delay time to the output signal of the v dout pin at voltage release. the delay time is determined by the constant current value determined by the internal current generator circuit, and the cd capacitance value. the relationship between the cd capacitance value and the delay time is shown below. (XC6408e) the detector function of the xc 6408e series detects the v sen pin voltage. the voltage divided by the detector internal resistance that is connected to the v sen pin is compared to the ic internal reference voltage, and if the voltage of the v sen pin falls below the threshold value, low level signal is output from v dout . ? operational explanation (continued) ? release delay time vs. cd connected capacitance XC6408d
15/34 XC6408 series ? notes on use 1 } please use this ic within the stated absolute maximum ratings. the ic is liable to malfunction should the ratings be exceeded. 2 } the power input pin voltage will falls down because of a resistance between power supply and power input pin and shoot through current when ic operates. at this time, if the power input pin voltage is lower than operating voltage range, the ic may cause device malfunction. 3. please note if the power input pin voltage will fluctuated, the ic may cause device malfunction. 4. if assumed the power input pin voltage falls suddenly (e.g. falls from 28.0v to 0v) at release operation when vd delay capacitor pin is connected to a capacitor, please connect a schottky barrier diode between the power input pin and delay capacitance pin. please refer below; (XC6408d). 5. the v dout output is configured as n-ch open drain, so please use a pull-up resistance more than 100k
for connecting to the output pin. * when the pull-up resistor connects to another power supply, hi gh level value will be equal to the voltage which the pull-up resistor is connected. 6. if the input voltage fluctuates more than 1.5v in the s peed higher than 100mv/ s, the output voltage ma y fluctuate widely. in this case, one capacitor should be added between v in -v ss to adjust the input fluctuation speed less than 100mv/ s. 7. for a delay capacitor pin of the XC6408d is designed in hi gh impedance. when this pin is left open for use, the ic may get noise. it is recommended that a capacitor more than 3pf is connected to the delay capacitor pin. 8. phase compensation is performed in t he XC6408 inside. therefore, an abnormal osc illation does not occur even if there is no output capacitor c l . an input capacitor c in around 0.1 f~1.0 f between the v in pin and the v ss pin is required for input stability. also, the output voltage fluctuation such as under shoot or over shoot, which occurs because of the load change can be controlled by placing the output capacitor c l around 0.1 f~1.0 f between the v rout pin and v ss pin. the input capacitor (c in ) and the output capacitor (c l ) should be placed to the ic as close as possible with a shorter wiring. cd v ss v in v dout vin cap r=100k v dout e.g. a circuit which delay capacitance pin is connected to a schottky barrier diode.
16/34 XC6408 series ? test circuits circuit ? circuit ? d series e series d series e series
17/34 XC6408 series cin:1uf v 100k vin vss vsen vdout cin:1uf v 100k vin vss vrout vdout cd vrout vin vss cd vrout vdout 100k cap=1000pf v ?????? ? test circuits (continued) circuit ? d series e series d series e series d series e series circuit ? circuit ? circuit ?
18/34 XC6408 series ? ? XC6408 series (1) output voltage vs. output current XC6408d/e (v rout =2v, v in =5.0v) 0.0 0.5 1.0 1.5 2.0 2.5 0 50 100 150 200 250 300 output current : i rout (ma) output voltage : v rou t (v) ta=-40 ta=25 ta=85 ? XC6408d/e (v rout =5.0v, v in =8.0v) 0.0 1.0 2.0 3.0 4.0 5.0 6.0 0 50 100 150 200 250 300 output current : i rout (ma) output voltage : v rou t (v) ta=-40 ta=25 ta=85 XC6408d/e (v rout =12.0v, v in =15.0v) 0 2 4 6 8 10 12 14 0 50 100 150 200 250 300 output current : i rout (ma) output voltage : v rou t (v) ta=-40 ta=25 ta=85 ? XC6408d/e (v rout =18.0v, v in =21.0v) 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 0 50 100 150 200 250 300 output current : i rout (ma) output voltage : v rou t (v) ta=-40 ta=25 ta=85 (2) output voltage vs. input voltage XC6408d/e (v rout =2.0v, i rout =5ma) 0.0 0.5 1.0 1.5 2.0 2.5 0 4 8 1216202428 input voltage : v in (v) output voltage : v rou t (v) ta=-40 ta=25 ta=85 ? XC6408d/e (v rout =5.0v, i rout =5ma) 0 1 2 3 4 5 6 0 4 8 1216202428 input voltage : v in (v) output voltage : v rou t (v) ta=-40 ta=25 ta=85 ? typical performance characteristics
19/34 XC6408 series ? ? XC6408 series (2) output voltage vs. input voltage XC6408d/e (v rout =12.0v, i rout =5ma) 0 2 4 6 8 10 12 14 0 4 8 1216202428 input voltage : v in (v) output voltage : v rou t (v) ta=-40 ta=25 ta=85 ? XC6408d/e (v rout =18.0v, i rout =5a) 0 2 4 6 8 10 12 14 16 18 20 0 5 10 15 20 25 30 input voltage : v in (v) output voltage : v rou t (v) ta=-40 ta=25 ta=85 (3) dropout voltage vs. output current XC6408d/e (v rout =2.0v) 0 500 1000 1500 2000 2500 3000 3500 4000 0 25 50 75 100 125 150 output current : i rout (ma) dropout voltage : vdif(mv) ta=-40 ta=25 ta=85 ? XC6408d/e (v rout =5.0v) 0 500 1000 1500 2000 2500 0 25 50 75 100 125 150 output current : i rout (ma) dropout voltage : vdif(mv) ta=-40 ta=25 ta=85 ? XC6408d/e (v rout =12.0v) 0 500 1000 1500 2000 2500 0 25 50 75 100 125 150 output current : i rout (ma) dropout voltage : vdif(mv) ta=-40 ta=25 ta=85 ? ? typical performance characteristics (continued) ta=-40 ta=25 ta=85 XC6408d/e (vrout=18.0v) 0 500 1000 1500 2000 2500 0 25 50 75 100 125 150 output current : i rout (ma) dropout voltage : vdif(mv) t=-40 t=25 t=85
20/34 XC6408 series ? ? XC6408 series ?? (4) output voltage vs. ambient temperature XC6408d/e (v rout =2.0v, i rout =20ma) 1.80 1.85 1.90 1.95 2.00 2.05 2.10 2.15 2.20 -50 -25 0 25 50 75 100 ambient temperature : ta() output voltage : v rou t (v) ? XC6408d/e (v rout =5.0v, i rout =20ma) 4.80 4.85 4.90 4.95 5.00 5.05 5.10 5.15 5.20 -50 -25 0 25 50 75 100 ambient temperature : ta() output voltage : v rou t (v) XC6408d/e (v rout =12.0v, i rout =20ma) 11.80 11.85 11.90 11.95 12.00 12.05 12.10 12.15 12.20 -50 -25 0 25 50 75 100 ambient temperature : ta() output voltage : v rou t (v) ? XC6408d/e (v rout =18.0v, i rout =20ma) 17.80 17.85 17.90 17.95 18.00 18.05 18.10 18.15 18.20 -50 -25 0 25 50 75 100 ambient temperature : ta() output voltage : v rou t (v) (5) ripple rejection ratio XC6408d/e (v rout =2.0v, v in =4.0v dc +0.5vp-p ac ) (c l =1.0uf(ceramic), ta=25) 0 10 20 30 40 50 60 70 80 90 0.01 0.1 1 10 100 frequency: f (khz) ripple rejection ratio : rr(db) irout=1ma irout=20ma ???? XC6408d/e (v rout =5.0v, v in =7.0v dc +0.5vp-p ac ) (c l =1.0uf(ceramic), ta=25) 0 10 20 30 40 50 60 70 80 90 0.01 0.1 1 10 100 frequency: f (khz) ripple rejection ratio : rr(db) irout=1ma irout=20ma ? typical performance chara cteristics (continued)
21/34 XC6408 series ? ? XC6408 series (5) ripple rejection ratio (continued) XC6408d/e (v rout =12.0v, v in= 14.0v dc +0.5vp-p ac ) (c l =1.0uf(ceramic), ta=25) 0 10 20 30 40 50 60 70 80 90 0.01 0.1 1 10 100 frequency: f (khz) ripple rejection ratio : rr(db) irout=1ma irout=20ma ???? XC6408d/e (v rout =18.0v, v in =20.0v dc +0.5vp-p ac ) (c l =1.0uf(ceramic), ta=25) 0 10 20 30 40 50 60 70 80 90 0.01 0.1 1 10 100 frequency: f (khz) ripple rejection ratio : rr(db) irout=1ma irout=20ma (6) line transient response XC6408d/e (v rout =2.0v, i rout =30ma, tr=tf=5us) (c l =1uf(ceramic), ta=25) 0 1 2 3 4 5 6 -2-101234567 time (ms) input voltage : v in (v) 1.8 1.9 2 2.1 2.2 2.3 2.4 output voltage : v rou t (v) vr output voltage inputvoltage ? XC6408d/e (v rout =5.0v, i rout =30ma, tr=tf=5us) (cl=1uf(ceramic), ta=25) 3 4 5 6 7 8 9 -2-101234567 time (ms) input voltage : v in (v) 4.8 4.9 5 5.1 5.2 5.3 5.4 output voltage : v rou t (v) vr output voltage inputvoltage XC6408d/e (v rout =12.0v, i rout =30ma, tr=tf=5us) (cl=1uf(ceramic), ta=25) 10 11 12 13 14 15 16 -2 -1 0 1 2 3 4 5 6 7 time (ms) input voltage : v in (v) 11.8 11.9 12 12.1 12.2 12.3 12.4 output voltage : v rou t (v) vr output voltage inputvoltage ? XC6408d/e (vrout=18.0v, irout=30ma, tr=tf=5us) (cl=1uf(ceramic), ta=25) 16 17 18 19 20 21 22 -2-101234567 time (ms) input voltage : v in (v) 17.6 17.8 18 18.2 18.4 18.6 18.8 output voltage : v rou t (v) vr output voltage inputvoltage ? ? typical performance chara cteristics (continued)
22/34 XC6408 series ? ? XC6408 series (7) load transient response XC6408d/e (v rout =2.0v, v in =5.0v, tr=tf=5us) (c in =c l =1uf(ceramic), ta=25) -1 0 1 2 3 4 -0.002 0 0.002 0.004 0.006 0.008 time (ms) output voltage : v rou t (v) 0 30 60 90 120 150 output current : i rou t (ma) vr output voltage vr output current 0 2 4 6 8 ? XC6408d/e (v rout =5.0v, v in =7.0v, tr=tf=5us) (c in =c l =1uf(ceramic), ta=25) 2 3 4 5 6 7 -0.002 0 0.002 0.004 0.006 0.008 time (ms) output voltage : v rou t (v) 0 30 60 90 120 150 output current : i rou t (ma) vr output voltage vr output current 0 2 4 6 8 XC6408d/e (v rout =12.0v, v in =14.0v, tr=tf=5us) (c in =c l =1uf(ceramic), ta=25) 9 10 11 12 13 14 -0.002 0 0.002 0.004 0.006 0.008 time (ms) output voltage : v rou t (v) 0 30 60 90 120 150 output current : i rou t (ma) vr output voltage vr output current 0 2 4 6 8 ? XC6408d/e (v rout =18.0v, v in =20.0v, tr=tf=5us) (c in =c l =1uf(ceramic), ta=25) 15 16 17 18 19 20 -0.002 0 0.002 0.004 0.006 0.008 time (ms) output voltage : v rou t (v) 0 30 60 90 120 150 output current : i rou t (ma) vr output voltage vr output current ? typical performance chara cteristics (continued) 0 2 4 6 8 0 2 4 6 8 0 0 0 2 4 6 8 0 0 2 4 6 8 0
23/34 XC6408 series ? ? XC6408d series (8) supply current vs. input voltage XC6408d (v rout =2.0v, v df =2.0v) 0 5 10 15 20 25 0 4 8 1216202428 input voltage : v in (v) supply current : i ss (ua) -40 25 85 ? XC6408d (v rout =5.0v, v df =4.5v) 0 5 10 15 20 25 0 4 8 1216202428 input voltage : v in (v) supply current : i ss (ua) -40 25 85 XC6408d (v rout =12.0v, v df =11.0v) 0 5 10 15 20 25 0 4 8 1216202428 input voltage : v in (v) supply current : i ss (ua) -40 25 85 ? XC6408d (v rout =18.0v, v df =16.0v) 0 5 10 15 20 25 0 4 8 1216202428 input voltage : v in (v) supply current : i ss (ua) -40 25 85 ? typical performance chara cteristics (continued)
24/34 XC6408 series ? ? XC6408e series (8) supply current vs. input voltage (continued) XC6408e (v rout =2.0v, v df =2.0v) 0 5 10 15 0 4 8 1216202428 input voltage : v in (v) supply current : i ss (ua) ta=-40 ta=25 ta=85 ? XC6408e (v rout =5.0v, v df =4.5v) 0 5 10 15 0 4 8 1216202428 input voltage : v in (v) supply current : i ss (ua) ta=-40 ta=25 ta=85 XC6408e (v rout =12.0v, v df =11.0v) 0 5 10 15 0 4 8 12 16 20 24 28 input voltage : v in (v) supply current : i ss (ua) ta=-40 ta=25 ta=85 ? XC6408e (v rout =18.0v, v df =16.0v) 0 5 10 15 0 4 8 1216202428 input voltage : v in (v) supply current : i ss (ua) ta=-40 ta=25 ta=85 ? typical performance chara cteristics (continued)
25/34 XC6408 series ? ? XC6408e series (9) sense current vs. sense voltage XC6408e (v df =2.0v) 0.0 2.5 5.0 7.5 10.0 0 4 8 1216202428 sense voltage : v sen (v) sense current : i sen se (ua) ta=-40 ta=25 ta=85 ? XC6408e (v df =4.5v) 0.0 2.5 5.0 7.5 10.0 0 4 8 1216202428 sense voltage : v sen (v) sense current : i sen se (ua) ta=-40 ta=25 ta=85 XC6408e (v df =11.0v) 0.0 2.5 5.0 7.5 10.0 0 4 8 1216202428 sense voltage : v sen (v) sense current : i sen se (ua) ta=-40 ta=25 ta=85 ? XC6408e (v df =16.0v) 0.0 2.5 5.0 7.5 10.0 0 4 8 12 16 20 24 28 sense voltage : v sen (v) sense current : i sen se (ua) ta=-40 ta=25 ta=85 ? typical performance chara cteristics (continued)
26/34 XC6408 series ? ? XC6408e series (10) vd supply current vs. input voltage XC6408e (v df =2.0v) 0 0.5 1 1.5 2 0 4 8 1216202428 input voltage : v in (v) vd supply current : i dss (ua) ta=-40 ta=25 ta=85 ? XC6408e (v df =4.5v) 0 0.5 1 1.5 2 0 4 8 1216202428 input voltage : v in (v) vd supply current : i dss (ua) ta=-40 ta=25 ta=85 XC6408e (v df =11.0v) 0 0.5 1 1.5 2 0 4 8 12 16 20 24 28 input voltage : v in (v) vd supply current : i dss (ua) ta=-40 ta=25v ta=85 ? XC6408e (v df =16.0v) 0 0.5 1 1.5 2 0 4 8 1216202428 input voltage : v in (v) vd supply current : i dss (ua) ta=-40 ta=25 ta=85 ? ? XC6408d series ??? XC6408 series ???? (11) cd pin current ??????????????????????? (12) vd n-ch driver output current vs. n-ch driver v ds XC6408d 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0 4 8 1216202428 input voltage : v in (v) cd current : icd(ua) ta=-40 ta=25 ta=85 ? XC6408d/e 0 5 10 15 20 25 0 5 10 15 20 25 30 vd output voltage : v dout (v) vd output current : i dout (ma) vin=2.0v vin=12v vin=28v ? typical performance chara cteristics (continued)
27/34 XC6408 series ? ? XC6408 series ???? (13) vd n-ch driver output current vs. input voltage XC6408d/e (v df =2.0v, v ds =0.5v) 0.0 0.1 0.2 0.3 0.4 0.5 0.00.51.01.52.0 input voltage : v in (v) vd output current : i dout (ma) ta=-40 ta=25 ta=85 ? XC6408d/e (v df =12.0v, v ds =0.5v) 0.0 0.3 0.6 0.9 1.2 1.5 024681012 input voltage : v in (v) vd output current : i dout (ma) ta=-40 ta=25 ta=85 ???? (14) detect voltage vs. ambient temperature release voltage vs. ambient temperature XC6408d/e (v df =2.0v) 1.8 1.85 1.9 1.95 2 2.05 2.1 2.15 2.2 -50 -25 0 25 50 75 100 ambient temperature : ta() detect voltage : v df (v) release voltage : v dr (v) vdf vdr ? XC6408d/e (v df =4.5v) 4.05 4.15 4.25 4.35 4.45 4.55 4.65 4.75 4.85 4.95 -50-250 255075100 ambient temperature : ta() detect voltage : v df (v) release voltage : v dr (v) vdf vdr XC6408d/e (v df =11v) 9.9 10.1 10.3 10.5 10.7 10.9 11.1 11.3 11.5 11.7 11.9 12.1 -50 -25 0 25 50 75 100 ambient temperature : ta() detect voltage : v df (v) release voltage : v dr (v) vdf vdr ? XC6408d/e (v df =16v) 14.4 14.8 15.2 15.6 16 16.4 16.8 17.2 17.6 -50 -25 0 25 50 75 100 ambient temperature : ta() detect voltage : v df (v) release voltage : v dr (v) vdf vdr ? typical performance chara cteristics (continued)
28/34 XC6408 series ??? ??????? 1.6 +0.2 -0.1 2.80.2 1.10.1 1.3max 0.2min (unit : mm) 1.0 1.6 +0.15 -0.2 4.50.1 2.50.1 0.8 min 4.35 max 0.420.06 0.420.06 0.470.06 8 8 (0.1) 1.50.1 1.50.1 1.50.1 5 5 0.4 +0.03 -0.02 0.4 +0.03 -0.02 123 (0.4) 0.8 min 4 5 0.420.06 0.420.06 0.420.06 2 packaging information ? usp-6c ? sot-25 ? sot-89-5
29/34 XC6408 series ? usp-6c reference pattern layout ? usp-6c reference metal mask design ???????????? 2.4 2 3 4 5 6 1 0.45 1.0 0.05 0.05 2 34 5 6 1 0.45 0.35 2.3 0.35 0.8 0.15 0.15 packaging information ( continued )
30/34 XC6408 series ? ? usp-6c power dissipation ? ) ambient temperature power dissipation pd mw thermal resistance ( /w) 25 1000 85 400 100.00 pd-ta? 0 200 400 600 800 1000 1200 25 45 65 85 105 125 x?ta S?p?pdmw power dissipation data for the usp-6c is shown in this page. the value of power dissipation varies with the mount board conditions. please use this data as one of referenc e data taken in the described condition. 1. measurement condition (reference data) condition: mount on a board ambient: natural convection soldering: lead (pb) free board: dimensions 40 x 40 mm (1600 mm 2 in one side) copper (cu) traces occupy 50% of the board area in top and back faces package heat-sink is tied to the copper traces material: glass epoxy (fr-4) thickness: 1.6 mm through-hole: 4 x 0.8 diameter evaluation board (unit: mm) 2. power dissipation vs. ambient temperature pd vs. ta ambient temperature ta ( ? ) power dissipation pd (mw) packaging information (continued)
31/34 XC6408 series ? ? sot-25 power dissipation u??gmm board mount (tj max = 125 ? ) ambient temperature power dissipation pd mw thermal resistance ( /w) 25 600 85 240 166.67 pd-ta? 0 100 200 300 400 500 600 700 25 45 65 85 105 125 x?ta S?p?pdmw power dissipation data for the sot-25 is shown in this page. the value of power dissipation varies with the mount board conditions. please use this data as one of referenc e data taken in the described condition. 1. measurement condition (reference data) condition: mount on a board ambient: natural convection soldering: lead (pb) free board: dimensions 40 x 40 mm (1600 mm 2 in one side) copper (cu) traces occupy 50% of the board area in top and back faces package heat-sink is tied to the copper traces (board of sot-26 is used.) material: glass epoxy (fr-4) thickness: 1.6 mm through-hole: 4 x 0.8 diameter evaluation board (unit: mm) 2. power dissipation vs. ambient temperature pd vs. ta ambient temperature ta ( ? ) power dissi p ation pd ( mw ) packaging information (continued)
32/34 XC6408 series ? ? sot-89-5 power dissipation ? ) ambient temperature power dissipation pd mw thermal resistance ( /w) 25 1300 85 520 76.92 pd-ta? 0 200 400 600 800 1000 1200 1400 25 45 65 85 105 125 x?ta S?p?pdmw power dissipation data for the sot-89-5 is shown in this page. the value of power dissipation varies with the mount board conditions. please use this data as one of referenc e data taken in the described condition. 1. measurement condition (reference data) condition: mount on a board ambient: natural convection soldering: lead (pb) free board: dimensions 40 x 40 mm (1600 mm 2 in one side) copper (cu) traces occupy 50% of the board area in top and back faces package heat-sink is tied to the copper traces material: glass epoxy (fr-4) thickness: 1.6 mm through-hole: 5 x 0.8 diameter evaluation board (unit: mm) 2. power dissipation vs. ambient temperature pd vs. ta ambient temperature ta ( ? ) power dissipation pd (mw) packaging information (continued)
33/34 XC6408 series ? sot-25, sot-89-5, usp-6c mark product series d XC6408d*****-g e XC6408e*****-g mark product series 01 XC6408**01**-g 123 54 sot25 marking rule ? represents additional function. ?? represents combination of output volt age and detect voltage for each ic. numbers are se q uence. ?? represents production lot number. 01 to 09, 0a to 0z, 11 to 9z, a1 to a9, aa to z9, za to zz in order. (g, i, j, o, q, w excepted) *no character inversion used. sot89-5 524 123 usp6c
34/34 XC6408 series 1. the products and product specifications cont ained herein are subject to change without notice to improve performance characteristic s. consult us, or our representatives before use, to confirm that the informat ion in this datasheet is up to date. 2. we assume no responsibility for any infri ngement of patents, pat ent rights, or other rights arising from the use of any information and circuitry in this datasheet. 3. please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this datasheet. 4. the products in this datasheet are not devel oped, designed, or approved for use with such equipment whose failure of malfuncti on can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. atomic energy; aerospace; transpor t; combustion and associated safety equipment thereof.) 5. please use the products listed in this datasheet within the specified ranges. should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. we assume no responsibility for damage or loss due to abnormal use. 7. all rights reserved. no part of this dat asheet may be copied or reproduced without the prior permission of torex semiconductor ltd.

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