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low voltage detector with built-in delay circuit r3130nxxxa/c, r3131nxxxa/c 1 outline r3130n/r3131n series are cmos-based low voltage detector ics with built-in delay circuit, high detector threshold accuracy and ultra low supply current which can be operated at low voltage. these ics can be used as system reset generator, and each of these ics consists of a voltage ref- erence, a comparator, resistors for setting voltage detector threshold, an output driver transistor, and an output delay generator. detector threshold is fixed internally with high accuracy and requires no adjustment. when supply voltage crosses a setting detector threshold voltage from a high value to a lower value, this ic generates reset signal. r3130n series output ?l? at detection mode, while r3131n series output ?h?. further, each of r3130n/r3131n series embeds an output delay generator, when supply voltage crosses a setting detector threshold voltage from a low value to a higher value, during a setting delay time which is fixed in the ic, this ic keeps the reset condition. output delay time can be selected. (typ. 240ms is standard.) two output types, nch open drain type and cmos type, are available. since the package for these ics is sot23-3 (mini-mold) package, high density mounting of the ics on board is possible. features ? pin to pin compatible with max 809/810 (r3130nxxxx: max 809, r3131nxxxx: max 810) ? ultra-low supply current .......................................typ. 1.25a (r313xn27xx: v dd =3.0v) ? operating voltage range .......................................1.0v to 6.0v (topt=25c) ? detector threshold.................................................setting with a step of 0.1v in the range of 1.6v to 4.8v is possible. ? embedded power on reset delay time circuit .......delay time can be designated. refer to selection guide. ? high accuracy detector threshold..........................1.5% ? high accuracy output delay time ..........................10.0% ? low temperature-drift coefficient of detector threshold typ. 100ppm/c ? two output types ..................................................nch open drain and cmos ? small package........................................................sot-23-3
r3130nxxxa/c , r3131nxxxa/c 2 applications ? cpu & logic circuit reset ? battery checker ? window comparator ? wave shaping circuit ? battery back-up circuit ? power failure detector block diagrams r3130nxxxa r3130nxxxc nch open drain output cmos output v dd gnd out delay circuit vref - + v dd gnd out delay circuit vref - + r3131nxxxa r3131nxxxc nch open drain output cmos output out delay circuit - + v dd gnd vref gnd out delay circuit vref - + v dd
r3130nxxx a /c , r3131nxxx a /c 3 timing chart v ss tdelay supply voltage (v dd ) output voltage detector threshold minimum operating voltage v det v ss v ss tdelay supply voltage (v dd ) output voltage detector threshold minimum operating voltage v det v ss r3130n operation diagram r3131n operation diagram ? output delay operation output delay time, or tdelay is specified as follows: 1. in the case of nch open drain output: the time interval from rising edge of v dd pulse (1.0v (v det )+1.0v) to the time at which the output reaches 2.5v under the condition that the output pin (out) is pulled up to 5v through a 470k ? resistor. 2. in the case of cmos output the time interval from rising edge of v dd pulse (1.0v (v det )+1.0v) to the time at which the output reaches v dd /2. v det +1.0v input voltage output voltage 1.0v 5.0v 2.5v gnd gnd trst tdelay (v dd ) v det +1.0v input voltage output voltage 1.0v v det +1.0v (v det +1.0v)/2 gnd gnd trst tdelay (v dd ) nch open drain output cmos output
r3130nxxxa/c , r3131nxxxa/c 4 selection guide the detector threshold , the output type, and output delay time of r3130n/r3131n series can be designated at the user?s request by specifying the part number as follows: r3130nxx xx x-tr part number r3131nxx xx x-tr part number a bcd e code contents a setting detector threshold (v det ) stepwise setting with a step of 0.1v in the range of 1.6v to 4.8v is possible. the following 4 kinds of voltage are also standard. 2.63v, 2.93v, 3.08v, 4.65v b selection of output delay time e: 240ms (standard) a: 50ms b: 100ms d: 200ms h: 400ms *a, b, d, h versions can be produced only for 6 kinds of standard voltage items. c designation output type a: nch open drain c: cmos d description of last one digit of 4 kinds of standard voltage items. e designation of taping direction (refer to taping specification) pin configuration sot-23-3 mark side 3 12
r3130nxxx a /c , r3131nxxx a /c 5 pin description pin no. symbol description 1 gnd ground pin 2 out output pin r3130n: output ?l? at detection mode, output ?h? at release mode r3131n: output ?h? at detection mode, output ?l? at release mode 3 v dd input pin absolute maximum ratings symbol item rating unit v dd supply voltage 6.5 v cmos v ss -0.3 to v dd +0.3 v v out output voltage nch v ss -0.3 to 6.5 v i out output current 20 ma p d power dissipation 150 mw topt operating temperature range -40 to +85 c tstg storage temperature range -55 to +125 c tsolder soldering temperature 260c, 10s absolute maximum ratings absolute maximum ratings are threshold limit values that must not be exceeded even for a moment under any conditions. moreover, such values for any items must not be reached simultaneously. operation above these absolute maximum ratings may cause degradation or permanent damage to the device. these are just stress ratings and do not necessarily imply to guarantee operation below these limits.
r3130nxxxa/c , r3131nxxxa/c 6 electrical characteristics ? r3130n26xx3-tr [topt=25c] symbol item conditions min. typ. max. unit v ddh maximum operating voltage 6.0 v v ddl (*1) minimum operating voltage i ol =50a 0.75 1.00 v v det detector threshold 2.591 2.630 2.669 v i ss1 supply current1 v dd =6.00v 1.40 5.00 a i ss2 supply current2 v dd =2.73v 1.25 4.00 a i ss3 supply current3 v dd =2.53v 1.10 3.50 a v oh ?h? output voltage v dd =2.73v, i out =-500a 0.8 v dd 0.93 v dd v v ol ?l? output voltage v dd =2.53v, i out =1.2ma 0.16 0.30 v tdelay (*2) output delay time for release refer to electrical characteristics by output delay time for release ? v det / ? topt detector threshold temperature coeffi- cient -40c topt 85c 100 ppm/ c ? r3130n29xx3-tr [topt=25c] symbol item conditions min. typ. max. unit v ddh maximum operating voltage 6.0 v v ddl (*1) minimum operating voltage i ol =50a 0.75 1.00 v v det detector threshold 2.887 2.930 2.973 v i ss1 supply current1 v dd =6.00v 1.40 5.00 a i ss2 supply current2 v dd =3.03v 1.25 4.00 a i ss3 supply current3 v dd =2.83v 1.10 3.50 a v oh ?h? output voltage v dd =3.03v, i out =-500a 0.8 v dd 0.93 v d d v v ol ?l? output voltage v dd =2.83v, i out =1.2ma 0.16 0.30 v tdelay (*2) output delay time for release refer to electrical characteristics by output delay time for release ? v det / ? topt detector threshold temperature coeffi- cient -40c topt 85c 100 ppm/ c
r3130nxxx a /c , r3131nxxx a /c 7 ? r3130n30xx8-tr [topt=25c] symbol item conditions min. typ. max. unit v ddh maximum operating voltage 6.0 v v ddl (*1) minimum operating voltage i ol =50a 0.75 1.00 v v det detector threshold 3.034 3.080 3.126 v i ss1 supply current1 v dd =6.00v 1.40 5.00 a i ss2 supply current2 v dd =3.18v 1.25 4.00 a i ss3 supply current3 v dd =2.98v 1.10 3.50 a v oh ?h? output voltage v dd =3.18v, i out =-500a 0.8 v dd 0.93 v d d v v ol ?l? output voltage v dd =2.98v, i out =1.2ma 0.16 0.30 v tdelay (*2) output delay time for release refer to electrical characteristics by output delay time for re- lease ? v det / ? topt detector threshold temperature coefficient -40c topt 85c 100 ppm/ c ? r3130n40xx-tr [topt=25c] symbol item conditions min. typ. max. unit v ddh maximum operating voltage 6.0 v v ddl (*1) minimum operating voltage i ol =50a 0.75 1.00 v v det detector threshold 3.940 4.000 4.060 v i ss1 supply current1 v dd =6.00v 1.40 5.00 a i ss2 supply current2 v dd =4.10v 1.30 4.00 a i ss3 supply current3 v dd =3.90v 1.15 3.50 a v oh ?h? output voltage v dd =4.10v, i out =-800a 0.8 v dd 0.95 v d d v v ol ?l? output voltage v dd =3.90v, i out =3.2ma 0.18 0.40 v tdelay (*2) output delay time for release refer to electrical characteristics by output delay time for re- lease ? v det / ? topt detector threshold temperature coefficient -40c topt 85c 100 ppm/ c
r3130nxxxa/c , r3131nxxxa/c 8 ? r3130n44xx-tr [topt=25c] symbol item conditions min. typ. max. unit v ddh maximum operating voltage 6.0 v v ddl (*1) minimum operating voltage i ol =50a 0.75 1.00 v v det detector threshold 4.334 4.400 4.466 v i ss1 supply current1 v dd =6.00v 1.40 5.00 a i ss2 supply current2 v dd =4.50v 1.30 4.00 a i ss3 supply current3 v dd =4.30v 1.15 3.50 a v oh ?h? output voltage v dd =4.50v, i out =-800a 0.8 v dd 0.95 v d d v v ol ?l? output voltage v dd =4.30v, i out =3.2ma 0.18 0.40 v tdelay (*2) output delay time for release refer to electrical characteristics by output delay time for re- lease ? v det / ? topt detector threshold temperature coefficient -40c topt 85c 100 ppm/ c ? r3130n46xx5-tr [topt=25c] symbol item conditions min. typ. max. unit v ddh maximum operating voltage 6.0 v v ddl (*1) minimum operating voltage i ol =50a 0.75 1.00 v v det detector threshold 4.581 4.650 4.719 v i ss1 supply current1 v dd =6.00v 1.40 5.00 a i ss2 supply current2 v dd =4.75v 1.30 4.00 a i ss3 supply current3 v dd =4.55v 1.15 3.50 a v oh ?h? output voltage v dd =4.75v, i out =-800a 0.8 v dd 0.95 v d d v v ol ?l? output voltage v dd =4.55v, i out =3.2ma 0.18 0.40 v tdelay (*2) output delay time for release refer to electrical characteristics by output delay time for re- lease ? v det / ? topt detector threshold temperature coefficient -40c topt 85c 100 ppm/ c
r3130nxxx a /c , r3131nxxx a /c 9 ? r3131n26xx3-tr [topt=25c] symbol item conditions min. typ. max. unit v ddh maximum operating voltage 6.0 v cmos output i oh =-10a v v ddl (*3) minimum operating voltage nch open drain output v ds =6.5v 0.90 1.00 v det detector threshold 2.591 2.630 2.66 9 v i ss1 supply current1 v dd =6.00v 1.40 5.00 a i ss2 supply current2 v dd =2.73v 1.25 4.00 a i ss3 supply current3 v dd =2.53v 1.10 3.50 a v oh ?h? output voltage v dd =2.73v, i out =-500a 0.8 v dd 0.93 v dd v v ol ?l? output voltage v dd =2.53v, i out =1.2ma 0.16 0.30 v tdelay (*2) output delay time for release refer to electrical characteristics by output delay time for re- lease ? v det / ? topt detector threshold temperature coefficient -40c topt 85c 100 ppm/ c ? r3131n29xx3-tr [topt=25c] symbol item conditions min. typ. max. unit v ddh maximum operating voltage 6.0 v cmos output i oh =-10a v ddl (*3) minimum operating voltage nch open drain output v ds =6.5v 0.90 1.00 v v det detector threshold 2.887 2.930 2.973 v i ss1 supply current1 v dd =6.00v 1.40 5.00 a i ss2 supply current2 v dd =3.03v 1.25 4.00 a i ss3 supply current3 v dd =2.83v 1.10 3.50 a v oh ?h? output voltage v dd =2.83v, i out =-500a 0.8 v dd 0.93 v dd v v ol ?l? output voltage v dd =3.03v, i out =1.2ma 0.16 0.30 v tdelay (*2) output delay time for release refer to electrical characteristics by output delay time for re- lease ? v det / ? topt detector threshold temperature coefficient -40c topt 85c 100 ppm / c
r3130nxxxa/c , r3131nxxxa/c 10 ? r3131n30xx8-tr [topt=25c] symbol item conditions min. typ. max. unit v ddh maximum operating voltage 6.0 v cmos output i oh =-10a v ddl (*3) minimum operating voltage nch open drain output v ds =6.5v 0.90 1.00 v v det detector threshold 3.034 3.080 3.126 v i ss1 supply current1 v dd =6.00v 1.40 5.00 a i ss2 supply current2 v dd =3.18v 1.25 4.00 a i ss3 supply current3 v dd =2.98v 1.10 3.50 a v oh ?h? output voltage v dd =2.98v, i out =-500a 0.8 v dd 0.93 v dd v v ol ?l? output voltage v dd =3.18v, i out =1.2ma 0.16 0.30 v tdelay (*2) output delay time for release refer to electrical characteristics by output delay time for re- lease ? v det / ? topt detector threshold temperature coefficient -40c topt 85c 100 ppm / c ? r3131n40xx-tr [topt=25c] symbol item conditions min. typ. max. unit v ddh maximum operating voltage 6.0 v cmos output i oh =-10a v ddl (*3) minimum operating voltage nch open drain output v ds =6.5v 0.90 1.00 v v det detector threshold 3.940 4.000 4.060 v i ss1 supply current1 v dd =6.00v 1.40 5.00 a i ss2 supply current2 v dd =3.90v 1.30 4.00 a i ss3 supply current3 v dd =4.10v 1.15 3.50 a v oh ?h? output voltag v dd =3.90v, i out =-800a 0.8 v dd 0.95 v dd v v ol ?l? output voltage v dd =4.10v, i out =3.2ma 0.18 0.40 v tdelay (*2) output delay time for release refer to electrical characteristics by output delay time for re- lease ? v det / ? topt detector threshold temperature coefficient -40c topt 85c 100 ppm / c
r3130nxxx a /c , r3131nxxx a /c 11 ? r3131n44xx-tr [topt=25c] symbol item conditions min. typ. max. unit v ddh maximum operating voltage 6.0 v cmos output i oh =-10a v ddl (*3) minimum operating voltage nch open drain output v ds =6.5v 0.90 1.00 v v det detector threshold 4.334 4.400 4.466 v i ss1 supply current1 v dd =6.00v 1.40 5.00 a i ss2 supply current2 v dd =4.50v 1.30 4.00 a i ss3 supply current3 v dd =4.30v 1.15 3.50 a v oh ?h? output voltage v dd =4.30v, i out =-800a 0.8 v dd 0.95 v d d v v ol ?l? output voltage v dd =4.50v, i out =3.2ma 0.18 0.40 v tdelay (*2) output delay time for release refer to electrical characteristics by output delay time for re- lease ? v det / ? topt detector threshold temperature coefficient -40c topt 85c 100 ppm/ c
r3130nxxxa/c , r3131nxxxa/c 12 ? r3131n46xx5-tr [topt=25c] symbol item conditions min. typ. max. unit v ddh maximum operating voltage 6.0 v cmos output i oh =-10a v ddl (*3) minimum operating voltage nch open drain output v ds =6.5v 0.90 1.00 v v det detector threshold 4.581 4.650 4.719 v i ss1 supply current1 v dd =6.00v 1.40 5.00 a i ss2 supply current2 v dd =4.75v 1.30 4.00 a i ss3 supply current3 v dd =4.55v 1.15 3.50 a v oh ?h? output voltage v dd =4.55v, i out =-800a 0.8 v dd 0.95 v d d v v ol ?l? output voltage v dd =4.75v, i out =3.2ma 0.18 0.40 v tdelay (*2) output delay time for release refer to electrical characteristics by output delay time for re- lease ? v det / ? topt detector threshold temperature coefficient -40c topt 85c 100 ppm/ c *1) supply voltage when output voltage becomes equal or less than 0.3v. (as for nch open drain output type, pull-up resistor is 470k ? , pull-up voltage is 5.0v. *2) time interval of rising edge of v dd which is set from 1.0v to v det +1.0v, and the point of which output voltage reaches to 50% of final voltage. *3) cmos output type; supply voltage when output voltage becomes equal or more than 0.8 v dd . nch open drain type; supply voltage when off leakage current becomes equal or less than 0.1a.
r3130nxxx a /c , r3131nxxx a /c 13 electrical characteristics by output delay time [topt=25c] output delay time (tdelay) part number test condition min. typ. max. unit r313xnxxax 45 50 55 r313xnxxbx 90 100 110 r313xnxxdx 180 200 220 r313xnxxex 216 240 264 r313xnxxhx v dd =1.0v to v det +1.0v 360 400 440 ms
r3130nxxxa/c , r3131nxxxa/c 14 electrical characteristics by detector threshold ? r3130n16ea/c to r3130n48ea/c detector threshold supply current 1 supply current 2 supply current 3 v det (v) i ss1 (a) i ss2 (a) i ss3 (a) part number min. typ. max. condi- tion typ. max. condition typ. max. condition typ. max. r3130n16ea/c 1.576 1.600 1.624 r3130n17ea/c 1.675 1.700 1.725 r3130n18ea/c 1.773 1.800 1.827 r3130n19ea/c 1.872 1.900 1.928 r3130n20ea/c 1.970 2.000 2.030 r3130n21ea/c 2.069 2.100 2.131 r3130n22ea/c 2.167 2.200 2.233 r3130n23ea/c 2.266 2.300 2.334 1.20 1.00 r3130n24ea/c 2.364 2.400 2.436 r3130n25ea/c 2.463 2.500 2.537 r3130n26ea/c 2.561 2.600 2.639 r3130n27ea/c 2.660 2.700 2.740 r3130n28ea/c 2.758 2.800 2.842 r3130n29ea/c 2.857 2.900 2.943 r3130n30ea/c 2.955 3.000 3.045 r3130n31ea/c 3.054 3.100 3.146 r3130n32ea/c 3.152 3.200 3.248 r3130n33ea/c 3.251 3.300 3.349 r3130n34ea/c 3.349 3.400 3.451 r3130n35ea/c 3.448 3.500 3.552 1.25 1.10 r3130n36ea/c 3.546 3.600 3.654 r3130n37ea/c 3.645 3.700 3.755 r3130n38ea/c 3.743 3.800 3.857 r3130n39ea/c 3.842 3.900 3.958 r3130n40ea/c 3.940 4.000 4.060 r3130n41ea/c 4.039 4.100 4.161 r3130n42ea/c 4.137 4.200 4.263 r3130n43ea/c 4.236 4.300 4.364 r3130n44ea/c 4.334 4.400 4.466 r3130n45ea/c 4.433 4.500 4.567 r3130n46ea/c 4.531 4.600 4.669 r3130n47ea/c 4.630 4.700 4.770 r3130n48ea/c 4.728 4.800 4.872 v dd =6.0 v 1.40 5.00 v dd =v det +0.1v 1.30 4.00 v dd =v det -0.1v 1.15 3.50
r3130nxxx a /c , r3131nxxx a /c 15 topt=25c ?h? output voltage ?l? output voltage minimum op- erating voltage output delay time detector threshold temperature coefficient v oh (v) v ol (v) v ddl (v) tdelay (ms) ? ? ? ? v det / ? ? ? ? topt (ppm/c) condition min. typ. condition typ. max. typ. max. min. typ. max. condition typ. v dd =v det +0.1v i oh = -150a 0.80 v dd 0.95 v dd v dd =v det +0.1v i oh = -500a 0.80 v dd 0.93 v dd v dd =v det -0.1v, i ol =1.2m a 0.16 0.30 v dd =v det +0.1v i oh = -800a 0.80 v dd 0.95 v dd v dd =v det -0.1v, i ol =3.2m a 0.18 0.40 *1 0.75 *1 1.00 216 240 264 -40c topt 85c 100 *1 describes v dd voltage when output voltage becomes equal or less than 0.3v.
r3130nxxxa/c , r3131nxxxa/c 16 ? r3131n16ea/c to r3131n48ea/c detector threshold supply current 1 supply current 2 supply current 3 v det (v) i ss1 (a) i ss2 (a) i ss3 (a) part number min. typ. max. condi- tion typ. max. condition typ. max. condition typ. max. r3131n16ea/c 1.576 1.600 1.624 r3131n17ea/c 1.675 1.700 1.725 r3131n18ea/c 1.773 1.800 1.827 r3131n19ea/c 1.872 1.900 1.928 r3131n20ea/c 1.970 2.000 2.030 r3131n21ea/c 2.069 2.100 2.131 r3131n22ea/c 2.167 2.200 2.233 r3131n23ea/c 2.266 2.300 2.334 1.20 1.00 r3131n24ea/c 2.364 2.400 2.436 r3131n25ea/c 2.463 2.500 2.537 r3131n26ea/c 2.561 2.600 2.639 r3131n27ea/c 2.660 2.700 2.740 r3131n28ea/c 2.758 2.800 2.842 r3131n29ea/c 2.857 2.900 2.943 r3131n30ea/c 2.955 3.000 3.045 r3131n31ea/c 3.054 3.100 3.146 r3131n32ea/c 3.152 3.200 3.248 r3131n33ea/c 3.251 3.300 3.349 r3131n34ea/c 3.349 3.400 3.451 r3131n35ea/c 3.448 3.500 3.552 1.25 1.10 r3131n36ea/c 3.546 3.600 3.654 r3131n37ea/c 3.645 3.700 3.755 r3131n38ea/c 3.743 3.800 3.857 r3131n39ea/c 3.842 3.900 3.958 r3131n40ea/c 3.940 4.000 4.060 r3131n41ea/c 4.039 4.100 4.161 r3131n42ea/c 4.137 4.200 4.263 r3131n43ea/c 4.236 4.300 4.364 r3131n44ea/c 4.334 4.400 4.466 r3131n45ea/c 4.433 4.500 4.567 r3131n46ea/c 4.531 4.600 4.669 r3131n47ea/c 4.630 4.700 4.770 r3131n48ea/c 4.728 4.800 4.872 v dd =6.0 v 1.40 5.00 v dd =v det +0.1v 1.30 4.00 v dd =v det -0.1v 1.15 3.50
r3130nxxx a /c , r3131nxxx a /c 17 topt=25c ?h? output voltage ?l? output voltage minimum op- erating voltage output delay time detector threshold temperature coefficient v oh (v) v ol (v) v ddl (v) tdelay (ms) ? ? ? ? v det / ? ? ? ? topt (ppm/c) condition min. typ. condition typ. max. typ. max. min. typ. max. condition typ. v dd =v det -0.1v i oh = -150a 0.80 v dd 0.95 v dd v dd =v det -0.1v i oh = -500a 0.80 v dd 0.93 v dd v dd =v det +0.1v, i ol =1.2m a 0.16 0.30 v dd =v det -0.1v i oh = -800a 0.80 v dd 0.95 v dd v dd =v det +0.1v, i ol =3.2m a 0.18 0.40 *2 0.90 *2 1.00 216 240 264 -40c topt 85c 100 *2 cmos output type; describes v dd voltage when output voltage becomes equal or more than v dd 0.8v nch open drain output type; describes v dd voltage when off-leakage current becomes equal or less than 0.1a.
r3130nxxxa/c , r3131nxxxa/c 18 operation ? operation of r3130n series v dd out pch ra rb nch gnd comparator vref - + delay circuit block diagram minimum operating voltage(v ddl ) tdelay gnd gnd b a 1 2 3 4 5 supply voltage (v dd ) output voltage (out) detector threshold(v det) =released voltage operating diagram in the above diagram, output voltage becomes equal to supply voltage (nch open drain output type; equal to pull-up voltage). when supply voltage is down to the detector threshold level (point a), vref v dd rb/(ra+rb) is true. then, output of the comparator is reversed, thus output voltage becomes equal to gnd level. when supply voltage is lower than minimum operating voltage, output of transistor is indefinite, therefore output is also indefinite. output voltage is equal to gnd level. when supply voltage is higher than released voltage (point b), vref v dd rb/(ra+rb) is true. then output of the comparator is reversed, thus output voltage becomes equal to supply voltage (nch open drain output type; equal to pull-up voltage). * there is no hysteresis range between detector threshold and released voltage. ? cmos output type out pin is connected to the drain of nch tr. and pch tr. in this ic. ? nch open drain output type out pin is connected to the drain of nch tr. in this ic. ( out pin should be pulled up to v dd or an external voltage level.)
r3130nxxx a /c , r3131nxxx a /c 19 ? operation of r3131n series v dd out pch ra rb nch gnd comparator vref - + delay circuit block diagram minimum operating voltage(v ddl ) tdelay gnd gnd b a 1 2 3 4 5 supply voltage (v dd ) output voltage (v out ) detector threshold(v det) =released voltage operation diagram in the above diagram, output voltage becomes equal to gnd level. when supply voltage is down to the detector threshold level (point a), vref v dd rb/(ra+rb) is true. then, output of the comparator is reversed, thus output voltage becomes equal to supply voltage (nch open drain output type; equal to pull-up voltage). when supply voltage is lower than minimum operating voltage, output of transistor is indefinite, therefore output is also indefinite.(nch open drain output type; output voltage level is equal to pull-up voltage.) output voltage is equal to supply voltage. (nch open drain output type; equal to pull-up voltage.) when supply voltage is higher than released voltage (point b), vref v dd rb/(ra+rb) is true. then output of the comparator is reversed, thus output voltage becomes equal to gnd level after the output delay time. * there is no hysteresis range between detector threshold and released voltage. ? cmos output type out pin is connected to the drain of nch tr. and pch tr. in this ic. ? nch open drain output type: i out pin is connected to the drain of nch tr. in this ic. ( out pin should be pulled up to v dd or an external voltage level.)
r3130nxxxa/c , r3131nxxxa/c 20 test circuits i ss v in v dd out r313xn series gnd v in v dd v out out 5v 470k ? r313xn series gnd test circuit for supply current test circuit for detector threshold (cmos output type; pull-up part is not necessary.) v in v dd out v i out v oh r313xn series gnd v in v dd out v i out v ol r313xn series gnd test circuit for ?h? output voltage test circuit for ?l? output voltage (cmos output type only) v in v ds ioz v dd out r313xn series gnd v in tdelay r3131n series r3130n series v out v dd out r313xn series gnd gnd input voltage output voltage gnd 1.0v (v det )+1.0v 50% 100% test circuit for off leakage current test circuit for output delay time (cmos output type; pull-up is not necessary.)
r3130nxxx a /c , r3131nxxx a /c 21 typical characteristics 1) supply current vs. input voltage r3131n26xx3 r3131n29xx3 0 0.0 0.4 0.8 1.2 1.6 2.0 123 input voltage v in [v] supply current i ss [ a] 4 25 c topt=85 c -40 c 56 0 0.0 0.4 0.8 1.2 1.6 2.0 1234 -40 c 56 25 c topt=85 c input voltage v in [v] supply current i ss [ a] r3131n30xx8 r3131n40xx 0 0.0 0.4 0.8 1.2 1.6 2.0 1234 -40 c 56 25 c topt=85 c input voltage v in [v] supply current i ss [ a] 0 0.0 0.4 0.8 1.2 1.6 2.0 1234 -40 c 56 25 c topt=85 c input voltage v in [v] supply current i ss [ a] r3131n44xx r3131n46xx5 0 0.0 0.4 0.8 1.2 1.6 2.0 1234 -40 c 56 25 c topt=85 c input voltage v in [v] supply current i ss [ a] 0 0.0 0.4 0.8 1.2 1.6 2.0 1234 -40 c 56 25 c topt=85 c input voltage v in [v] supply current i ss [ a]
r3130nxxxa/c , r3131nxxxa/c 22 2) detector threshold vs. temperature r3130n26xx3 r3130n29xx3 -50 2.57 2.59 2.63 2.61 2.65 2.67 -25 0 25 temperature topt[ c] detector threshold -v det [v] 50 75 100 -50 2.87 2.89 2.95 2.93 2.91 2.97 2.99 -25 0 25 50 75 100 temperature topt[ c] detector threshold -v det [v] r3130n30xx8 r3130n40xx -50 3.01 3.03 3.09 3.07 3.05 3.11 3.13 -25 0 25 50 75 100 temperature topt[ c] detector threshold -v det [v] -50 3.98 3.96 3.94 3.92 4.06 4.04 4.02 4.00 4.08 -25 0 25 50 75 100 temperature topt[ c] detector threshold -v det [v] r3130n44xx r3130n46xx5 -50 4.35 4.33 4.31 4.29 4.43 4.41 4.39 4.37 4.45 -25 0 25 50 75 100 temperature topt[ c] detector threshold -v det [v] -50 4.59 4.57 4.55 4.53 4.67 4.65 4.63 4.61 4.69 -25 0 25 50 75 100 temperature topt[ c] detector threshold -v det [v]
r3130nxxx a /c , r3131nxxx a /c 23 3) nch driver output current vs. v ds r3130n26xx3 r3130n29xx3 0.0 4 2 0 8 6 10 0.5 1.0 v ds [v] nch driver output current i out [ma] 1.5 2.0 v dd =2.0v 1.0v 0.0 4 2 0 8 6 10 0.5 1.0 1.5 2.0 v dd =2.0v 1.0v v ds [v] nch driver output current i out [ma] r3130n30xx8 r3130n40xx 0.0 4 2 0 8 6 10 0.5 1.0 1.5 2.0 v dd =2.0v 1.0v v ds [v] nch driver output current i out [ma] 0.0 5 0 15 10 20 0.5 1.0 1.5 3.0 2.0 2.5 v dd =3.0v 1.0v 2.0v v ds [v] nch driver output current i out [ma] r3130n44xx r3130n46xx5 v dd =4.0v 1.0v 2.0v 3.0v 0.0 5 0 15 10 20 0.5 1.0 1.5 3.0 2.0 2.5 v ds [v] nch driver output current i out [ma] v dd =4.0v 1.0v 2.0v 3.0v 0.0 5 0 15 10 20 0.5 1.0 1.5 3.0 2.0 2.5 v ds [v] nch driver output current i out [ma]
r3130nxxxa/c , r3131nxxxa/c 24 r3131n26xx3 r3131n29xx3 v ds [v] nch driver output current i out [ma] v dd =3.0v 6.0v 4.0v 5.0v 0.0 5 0 15 10 20 0.5 1.0 1.5 3.0 2.0 2.5 v dd =3.0v 6.0v 4.0v 5.0v 0.0 5 0 15 10 20 0.5 1.0 1.5 3.0 2.0 2.5 v ds [v] nch driver output current i out [ma] r3131n30xx8 r3131n40xx v dd =4.0v 6.0v 5.0v 0.0 5 0 15 10 20 0.5 1.0 1.5 3.0 2.0 2.5 v ds [v] nch driver output current i out [ma] v dd =5.0v 6.0v 0.0 5 0 15 10 20 0.5 1.0 1.5 3.0 2.0 2.5 v ds [v] nch driver output current i out [ma] r3131n44xx r3131n46xx5 v dd =5.0v 6.0v 0.0 5 0 15 10 20 0.5 1.0 1.5 3.0 2.0 2.5 v ds [v] nch driver output current i out [ma] v dd =5.0v 6.0v 0.0 5 0 15 10 20 0.5 1.0 1.5 3.0 2.0 2.5 v ds [v] nch driver output current i out [ma]
r3130nxxx a /c , r3131nxxx a /c 25 4) nch driver output current vs. input voltage r3130n26xx3 r3130n29xx3 input voltage v in [v] nch driver output current i out [ma] v ds =0.5v 0 4 3 2 0 1 9 8 7 6 5 10 0.5 1 1.5 25 c 85 c 3 2 2.5 topt=-40 c v ds =0.5v 0 4 3 2 0 1 9 8 7 6 5 10 0.5 1 1.5 25 c 85 c 3 2 2.5 topt=-40 c input voltage v in [v] nch driver output current i out [ma] r3130n30xx8 r3130n40xx 0 4 2 0 8 6 12 10 0.5 1 1.5 25 c 85 c 3.5 3 2 2.5 topt=-40 c v ds =0.5v input voltage v in [v] nch driver output current i out [ma] 0 4 2 0 8 6 12 10 12 25 c 85 c 5 4 3 topt=-40 c v ds =0.5v input voltage v in [v] nch driver output current i out [ma] r3130n44xx r3130n46xx5 0 4 2 0 8 6 14 12 10 12 25 c 85 c 5 4 3 topt=-40 c v ds =0.5v input voltage v in [v] nch driver output current i out [ma] 0 4 2 0 8 6 14 12 10 12 25 c 85 c 5 4 3 topt=-40 c v ds =0.5v input voltage v in [v] nch driver output current i out [ma]
r3130nxxxa/c , r3131nxxxa/c 26 r3131n26xx3 r3131n29xx3 0 4 2 0 8 6 16 14 12 10 12 25 c 85 c 6 5 4 3 topt=-40 c input voltage v in [v] nch driver output current i out [ma] v ds =0.5v 0 4 2 0 8 6 16 14 12 10 12 25 c 85 c 6 5 4 3 topt=-40 c input voltage v in [v] nch driver output current i out [ma] v ds =0.5v r3131n30xx8 r3131n40xx 0 4 2 0 8 6 16 14 12 10 12 25 c 85 c 6 5 4 3 topt=-40 c input voltage v in [v] nch driver output current i out [ma] v ds =0.5v 0 4 2 0 8 6 16 14 12 10 12 25 c 85 c 6 5 4 3 topt=-40 c input voltage v in [v] nch driver output current i out [ma] v ds =0.5v r3131n44xx r3131n46xx5 0 4 2 0 8 6 16 14 12 10 12 25 c 85 c 6 5 4 3 topt=-40 c input voltage v in [v] nch driver output current i out [ma] v ds =0.5v 0 4 2 0 8 6 16 14 12 10 12 25 c 85 c 6 5 4 3 topt=-40 c input voltage v in [v] nch driver output current i out [ma] v ds =0.5v
r3130nxxx a /c , r3131nxxx a /c 27 5) pch driver output current vs. input voltage r3130n26xx3 r3130n29xx3 input voltage v in [v] pch driver output current i out [ma] 0 4 2 0 8 6 12 10 12 -1.5v -1.0v -0.5v 6 5 4 3 v ds =-2.1v 0 4 2 0 8 6 12 10 12 -1.5v -1.0v -0.5v 6 5 4 3 v ds =-2.1v input voltage v in [v] pch driver output current i out [ma] r3130n30xx8 r3130n40xx 0 4 2 0 8 6 12 10 12 -1.5v -1.0v -0.5v 6 5 4 3 v ds =-2.1v input voltage v in [v] pch driver output current i out [ma] 0 4 2 0 8 6 12 10 12 -1.5v -1.0v -0.5v 6 5 4 3 v ds =-2.1v input voltage v in [v] pch driver output current i out [ma] r3130n44xx r3130n46xx5 0 4 2 0 8 6 12 10 12 -1.5v -1.0v -0.5v 6 5 4 3 v ds =-2.1v input voltage v in [v] pch driver output current i out [ma] 0 4 2 0 8 6 12 10 12 -1.5v -1.0v -0.5v 6 5 4 3 v ds =-2.1v input voltage v in [v] pch driver output current i out [ma]
r3130nxxxa/c , r3131nxxxa/c 28 r3131n26xx3 r3131n29xx3 0 1 0 3 2 4 0.5 1 -1.5v -1.0v -0.5v 3 2.5 2 1.5 v ds =-2.1v input voltage v in [v] pch driver output current i out [ma] 0 1 0 3 2 5 4 1 -1.5v -1.0v -0.5v 4 3 2 v ds =-2.1v input voltage v in [v] pch driver output current i out [ma] r3131n30xx8 r3131n40xx 0 1 0 3 2 5 4 1 -1.5v -1.0v -0.5v 4 3 2 v ds =-2.1v input voltage v in [v] pch driver output current i out [ma] 0 1 0 5 3 4 2 8 7 6 1 -1.5v -1.0v -0.5v 5 4 3 2 v ds =-2.1v input voltage v in [v] pch driver output current i out [ma] r3131n44xx r3131n46xx5 0 0 4 2 10 8 6 1 -1.5v -1.0v -0.5v 5 4 3 2 v ds =-2.1v input voltage v in [v] pch driver output current i out [ma] 0 0 4 2 10 8 6 1 -1.5v -1.0v -0.5v 5 4 3 2 v ds =-2.1v input voltage v in [v] pch driver output current i out [ma]
r3130nxxx a /c , r3131nxxx a /c 29 6) output delay time at detection mode vs. temperature r3131n26xx3 r3131n29xx3 temperature topt[ c] output delay time at detection mode trst[ s] -50 0 0 20 10 50 40 30 -25 100 75 50 25 -50 0 0 20 10 50 40 30 -25 100 75 50 25 temperature topt[ c] output delay time at detection mode trst[ s] r3131n30xx8 r3131n40xx -50 0 0 20 10 50 40 30 -25 100 75 50 25 temperature topt[ c] output delay time at detection mode trst[ s] -50 0 0 20 10 50 40 30 -25 100 75 50 25 temperature topt[ c] output delay time at detection mode trst[ s] r3131n44xx r3131n46xx5 -50 0 0 20 10 50 40 30 -25 100 75 50 25 temperature topt[ c] output delay time at detection mode trst[ s] -50 0 0 20 10 50 40 30 -25 100 75 50 25 temperature topt[ c] output delay time at detection mode trst[ s]
r3130nxxxa/c , r3131nxxxa/c 30 7) power-on reset delay time vs. temperature r3131nxxax r3131nxxbx power-on reset delay time tdelay[ms] -50 0 35 45 75 65 55 -25 100 75 50 25 temperature topt[ c] -50 0 60 80 140 120 100 -25 100 75 50 25 power-on reset delay time tdelay[ms] temperature topt[ c] r3131nxxdx r3131nxxex -50 0 150 175 250 225 200 -25 100 75 50 25 power-on reset delay time tdelay[ms] temperature topt[ c] -50 0 200 240 360 320 280 -25 100 75 50 25 power-on reset delay time tdelay[ms] temperature topt[ c] r3131nxxhx -50 0 300 350 500 450 400 -25 100 75 50 25 power-on reset delay time tdelay[ms] temperature topt[ c]
r3130nxxx a /c , r3131nxxx a /c 31 technical notes v dd v dd out r r313xn series gnd figure a v dd v dd r1 r2 gnd out r313xn series figure b as shown wiring in figure a and figure b may cause unstable operation by cross conduction current at detection of all types of r313xn series. the detector threshold may shift because of voltage drop by consumption current of this ic itself. *at the power-on state, if v dd starts up from minimum input voltage (1v) or less very rapidly, the in- ternal initialization may not be finished, and output may be unstable. if the transient time from the minimum input voltage to the detector threshold level at the power-on state is 30 s or less, fully evaluation is necessary.

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