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low voltage detector r3113d series no. ea-115-0506 1 outline the r3113d series are cmos-based voltage detector ics with high detector threshold accuracy and ultra-low supply current, which can be operated at an extremely low voltage and is used for system reset as an example. each of these ics consists of a voltage reference unit, a comparator, resistors for detector threshold setting, an output driver and a hysteresis circuit. the detector thre shold is fixed with high accuracy internally and does not require any adjustment. two output types, nch open drain ty pe and cmos type are available. since the package is ultra-small son1408-3 (mfp ak), high density mounting on board is possible . features ? ultra-low supply current ................................................................. typ. 1.4 a (v det >1.5v: v dd = v det + 1.0v) ? wide range of operating voltage ............................................... 0.6v to 6.0v (v det = 3.0v, topt = 25 c) ? detector threshold ............................................................................ stepwise setting with a step of 0.1v in the range from 1.2v to 4.5v is possible. ? high accuracy detector threshold .............................................. 2.0% ? low temperature-drift coefficient of detector threshold ... typ. 100ppm/ c ? two output types .............................................................................. nch open drain and cmos ? ultra-small package .......................................................................... son1408-3 applications ? cpu and logic circuit reset ? battery checker ? window comparator ? wave shaping circuit ? battery back-up circuit ? power failure detector
r3113d 2 block diagrams r3113dxx1a r3113dxx1c v dd out gnd vref v dd out gnd vref timing chart t plh supply voltage output voltage (out) minimum operating voltage v ss v ss detector threshold hysteresis (v dd ) release voltage +v det detector threshold -v det
r3113d 3 definition of output delay time output delay time t plh is defined as follows: 1. in the case of nch open drain output: under the condition of the output pin (out ) is pulled up through a resistor of 470k ? to 5v, the time interval between the rising edge of v dd pulse from 0.85v to ( + v det ) + 1.0v and becoming of the output voltage to 2.5v. 2. in the case of cmos output: the time interval between the rising edge of v dd pulse from 0.85v to ( + v det ) + 1.0v and becoming of the output voltage to (v dd / 2) v. +v det + 1.0v 5.0v 2.5v 0.85v input voltage (v dd ) output voltage gnd gnd t phl t plh +v det + 1.0v +v det +1.0v +v det +1.0v 0.85v input voltage (v dd ) output voltage gnd 2 gnd t phl t plh nch open drain output cmos output selection guide the detector threshold, the output type and the taping type of r3113 series can be designated at the users? request by specifying the part number as follows; r3113xxx 1x-xx part number a b c d code contents a designation of package type; son1408-3 b setting detector threshold ( ? v det ); stepwise setting with a step of 0.1v in the range of 1.2v to 4.5v is possible. c designation of output type; a: nch open drain c: cmos d designation of packing or taping type; ex.tr prescribed as standard directions. (refer to taping specifications.) antistatic bag for samples: c
r3113d 4 pin configuration son1408-3 (mark side) 12 3 pin description ? r3113d pin no. symbol description 1 out output pin 2 v dd input pin 3 gnd ground pin absolute maximum ratings symbol item rating unit v dd supply voltage 6.5 v v out1 output voltage (cmos) v ss ? 0.3 to v dd + 0.3 v v out2 output voltage (nch) v ss ? 0.3 to 6.5 v i out output current 20 ma p d power dissipation ? note1 250 mw topt operating temperature range ? 40 to 85 c tstg storage temperature range ? 55 to 125 c tsolder lead temperature (soldering) 260 c, 10s ? note 1: applied to son1408-3 at mounted on board p d depends on conditions of mounting on board. this specification is based on the measurement at the condition below: ? measurement conditions environment: mounted on board (wind velocity 0m/s) board material: fr-4 (2-layer) board dimensions: 40mm 40mm t1.6mm copper area: 50%(both sides) tab pin (pin 3) land pattern width is sa me as the lead, connected to the gnd plane.
r3113d 5 electrical characteristics ? r3113d121a/c topt = 25 c symbol item conditions min. typ. max. unit ? v det detector threshold 1.176 1.200 1.224 v v hys detector threshold hysteresis 0.036 0.060 0.084 v i ss supply current v dd = ( ? v det ) ? 0.1v ( ? v det ) + 1.0v 0.8 1.1 2.0 2.7 a v ddh maximum operating voltage 6 v topt = 25 c 0.65 0.85 v ddl minimum operating voltage ? note1 ? 40 c < = < = c 0.95 v nch v ds = 0.05v, v dd = 0.85v v ds = 0.50v, v dd = 1.10v 0.2 1.0 0.3 2.2 ma i out output current (driver output pin) pch v ds =? 2.1v, v dd = 4.5v 2.0 5.0 ma t plh output delay time ? note2 100 s ?? v det / ? t detector threshold temperature coefficient ? 40 c < = < = c 100 ppm/ c ? r3113d181a/c topt = 25 c symbol item conditions min. typ. max. unit ? v det detector threshold 1.764 1.800 1.836 v v hys detector threshold hysteresis 0.054 0.090 0.126 v i ss supply current v dd = ( ? v det ) ? 0.1v ( ? v det ) + 1.0v 1.3 1.4 3.3 3.6 a v ddh maximum operating voltage 6 v topt = 25 c 0.45 0.70 v ddl minimum operating voltage ? note1 ? 40 c < = < = c 0.80 v nch v ds = 0.05v, v dd = 0.70v v ds = 0.50v, v dd = 1.50v 0.05 2.00 0.13 5.00 ma i out output current (driver output pin) pch v ds =? 2.1v, v dd = 4.5v 2.0 5.0 ma t plh output delay time ? note2 100 s ?? v det / ? t detector threshold temperature coefficient ? 40 c < = < = c 100 ppm/ c
r3113d 6 ? r3113d271a/c topt = 25 c symbol item conditions min. typ. max. unit ? v det detector threshold 2.646 2.700 2.754 v v hys detector threshold hysteresis 0.081 0.135 0.189 v i ss supply current v dd = ( ? v det ) ? 0.1v ( ? v det ) + 1.0v 1.3 1.4 3.3 3.6 a v ddh maximum operating voltage 6 v topt = 25 c 0.45 0.70 v ddl minimum operating voltage ? note1 ? 40 c < = < = c 0.80 v nch v ds = 0.05v,v dd = 0.70v v ds = 0.50v,v dd = 1.50v 0.05 2.00 0.13 5.00 ma i out output current (driver output pin) pch v ds =? 2.1v,v dd = 4.5v 2.0 5.0 ma t plh output delay time ? note2 100 s ?? v det / ? t detector threshold temperature coefficient ? 40 c < = < = c 100 ppm/ c ? r3113d361a/c topt = 25 c symbol item conditions min. typ. max. unit ? v det detector threshold 3.528 3.600 3.672 v v hys detector threshold hysteresis 0.108 0.180 0.252 v i ss supply current v dd = ( ? v det ) ? 0.1v ( ? v det ) + 1.0v 1.3 1.4 3.3 3.6 a v ddh maximum operating voltage 6 v topt = 25 c 0.45 0.70 v ddl minimum operating voltage ? note1 ? 40 c < = < = c 0.70 v nch v ds = 0.05v, v dd = 0.70v v ds = 0.50v, v dd = 1.50v 0.05 2.00 0.13 5.00 ma i out output current (driver output pin) pch v ds =? 2.1v, v dd = 4.5v 2.0 5.0 ma t plh output delay time ? note2 100 s ?? v det / ? t detector threshold temperature coefficient ? 40 c < = < = c 100 ppm/ c
r3113d 7 ? r3113d451a/c topt = 25 c symbol item conditions min. typ. max. unit ? v det detector threshold 4.410 4.500 4.590 v v hys detector threshold hysteresis 0.135 0.225 0.315 v i ss supply current v dd = ( ? v det ) ? 0.1v ( ? v det ) + 1.0v 1.3 1.4 3.3 3.6 a v ddh maximum operating voltage 6 v topt = 25 c 0.45 0.70 v ddl minimum operating voltage ? note1 ? 40 c < = < = c 0.80 v nch v ds = 0.05v, v dd = 0.70v v ds = 0.50v, v dd = 1.50v 0.05 2.00 0.13 5.00 ma i out output current (driver output pin) pch v ds =? 2.1v, v dd = 6.0v 2.5 6.0 ma t plh output delay time ? note2 100 s ?? v det / ? t detector threshold temperature coefficient ? 40 c < = < = c 100 ppm/ c ? note1: the minimum operating voltage means the value of input voltage when output voltage maintains 0.1v or less. (in the case of nch open drain output ty pe, the output pin is pulled up with a resistance of 470k ? to 5.0v.) ? note2: in the case of cmos output type: the time interval between the rising edge of v dd input pulse from 0.85v to ( + v det ) + 1.0v and output voltage level becoming to v dd /2.
r3113d 8 electrical characteristics by detector threshold ? r3113d121x to r3113d451x detector threshold detector threshold hysteresis supply current 1 supply current 2 ? v det [v] v hys [v] i ss1 [ a] i ss2 [ a] part number min t yp . max. min. t yp . max. condition t yp . max. condition t yp . max. r3113d121x 1.1 1.200 1.224 0.036 0.060 0.084 r3113d131x 1.2 1.300 1.326 0.039 0.065 0.091 r3113d141x 1.3 1.400 1.428 0.042 0.070 0.098 r3113d151x 1.4 1.500 1.530 0.045 0.075 0.105 0.8 2.0 1.1 2.7 r3113d161x 1.5 1.600 1.632 0.048 0.080 0.112 r3113d171x 1.6 1.700 1.734 0.051 0.085 0.119 r3113d181x 1.7 1.800 1.836 0.054 0.090 0.126 r3113d191x 1.8 1.900 1.938 0.057 0.095 0.133 r3113d201x 1.9 2.000 2.040 0.060 0.100 0.140 r3113d211x 2.0 2.100 2.142 0.063 0.105 0.147 r3113d221x 2.1 2.200 2.244 0.066 0.110 0.154 r3113d231x 2.2 2.300 2.346 0.069 0.115 0.161 r3113d241x 2.3 2.400 2.448 0.072 0.120 0.168 r3113d251x 2.4 2.500 2.550 0.075 0.125 0.175 r3113d261x 2.5 2.600 2.652 0.078 0.130 0.182 r3113d271x 2.6 2.700 2.754 0.081 0.135 0.189 r3113d281x 2.7 2.800 2.856 0.084 0.140 0.196 r3113d291x 2.8 2.900 2.958 0.087 0.145 0.203 r3113d301x 2.9 3.000 3.060 0.090 0.150 0.210 r3113d311x 3.0 3.100 3.162 0.093 0.155 0.217 r3113d321x 3.1 3.200 3.264 0.096 0.160 0.224 r3113d331x 3.2 3.300 3.366 0.099 0.165 0.231 r3113d341x 3.3 3.400 3.468 0.102 0.170 0.238 r3113d351x 3.4 3.500 3.570 0.105 0.175 0.245 r3113d361x 3.5 3.600 3.672 0.108 0.180 0.252 r3113d371x 3.6 3.700 3.774 0.111 0.185 0.259 r3113d381x 3.7 3.800 3.876 0.114 0.190 0.266 r3113d391x 3.8 3.900 3.978 0.117 0.195 0.273 r3113d401x 3.9 4.000 4.080 0.120 0.200 0.280 R3113D411X 4.0 4.100 4.182 0.123 0.205 0.287 r3113d421x 4.1 4.200 4.284 0.126 0.210 0.294 r3113d431x 4.2 4.300 4.386 0.129 0.215 0.301 r3113d441x 4.3 4.400 4.488 0.132 0.220 0.308 r3113d451x 4.4 4.500 4.590 0.135 0.225 0.315 v dd = ( ? v det ) ? 0.10v 1.3 3.3 v dd = ( ? v det ) + 1.0v 1.4 3.6 ? note1: in the case of cmos output type: the time interval between the rising edge of v dd input pulse from 0.85v to ( + v det ) + 1.0v and output voltage level becoming to v dd /2. condition1: topt = 25 c condition2: ? 40 c < = topt < = 85 c ? note2: the minimum operating voltage means the value of input voltage when output voltage maintains 0.1v or less. (in the case of nch open drain output ty pe, the output pin is pulled up with a resistance of 470k ? to 5.0v.)
r3113d 9 output current 1 output current 2 output delay time minimum operating voltage detector threshold temperature coefficient i out1 [ma] i out2 [ma] t plh [ s] v ddl [v] ? ? v det / ? t[ppm / c] condition min. t yp . condition min. t yp . max. t yp . max. conditio t yp . nch v ds = 0.05v v dd = 0.85v 0.2 0.3 v dd = 1.1v 1.0 2.2 note 2 condition 1 0.65 condition 2 condition 1 0.85 condition 2 0.95 nch v ds = 0.05v v dd = 0.7v 0.05 0.13 nch v ds = 0.5v v dd = 1.5v 2.0 5.0 note 1 100 note 2 condition 1 0.45 condition 2 note 2 condition 1 0.70 condition 2 0.80 ? 40 c < = < = 85 c 100
r3113d 10 operation v dd out gnd vref ra rb rc pch nch comparator figure 1. block diagram t plh supply voltage (v dd ) output voltage (v out ) released voltage(+v det ) detector threshold(-v det ) detector threshold hysteresis 12 3 4 5 a b minimum operating voltage gnd gnd step 1 2 3 4 5 comparator pin input voltage i ii iii iv v comparator output h l inde-finite l h tr.1 off on inde-finite on off pch on off inde-finite off on output tr. nch off on inde-finite on off rb + rc i. ra + rb + rc v dd rb ii. ra + rb v dd figure 2. operation diagram step 1. the output voltage is equal to the supply voltage (v dd ). step 2. at point ?a?, vref > = v dd (rb + rc)/(ra + rb + rc) is true, as a result, the out put of comparator is reverse, and output voltage becomes to gnd level. the voltage level of point a means detector threshold voltage, or ( ? v det ). step 3. when the supply voltage is less than minimu m operating voltage, the operation of output transistor becomes indefinite, and in the case that output is pulled up to v dd , the output voltage equals to v dd voltage. step 4. the output voltage equals to gnd level. step 5. at point ?b?, vref > = v dd rb/(ra + rb) is true, output of the comparator is reverse, and output voltage is equal to the supply voltage, or (v dd ). the voltage level of point b means released voltage, or ( + v det ). ? the difference between released voltage and detector thre shold voltage is the detector threshold hysteresis.
r3113d 11 test circuits ? pull-up circuit is not necessary for cmos output type, or r3113dxxxc. r3113d series i ss v dd v in out gnd r3113d series v dd v in out gnd v out 470k ? figure 3. supply current test circuit fi gure 4. detector threshold test circuit r3113d series v dd v in out gnd v ds i out r3113d series v dd v in out gnd v dd -|v ds | i out v ds figure 5. nch driver output current test circuit figure 6. pch driver output current test circuit ? apply only to cmos 0.85 v gnd ( + v det ) + 1.0 v gnd output voltage input voltage t plh 100% 50% r3113d series v dd v in out gnd v out 470k ? figure 7. output delay time test circuit (1) figure 8. output delay time test circuit (2)
r3113d 12 typical characteristics 1) supply current vs. input voltage r3113d121c r3113d271c 02 5 14 36 input voltage v in (v) supply current i ss ( a) 0.0 0.5 1.0 1.5 2.0 2.5 topt=85 c 25 c -40 c 02 5 14 36 input voltage v in (v) supply current i ss ( a) 0.0 0.5 1.0 1.5 2.0 2.5 topt=85 c 25 c -40 c r3113d451c 02 5 14 36 input voltage v in (v) supply current i ss ( a) 0.0 0.5 1.0 1.5 2.0 topt=85 c 25 c -40 c 2) detector threshold hysteresis vs. temperature r3113d121c r3113d271c 1.14 1.18 1.30 1.26 1.28 1.22 1.16 1.24 1.20 -60 -20 60 80 20 -40 40 0 100 temperature topt( c) detector threshold -v det (v) +v det -v det 2.500 2.600 2.900 2.800 2.700 -60 -20 60 80 20 -40 40 0 100 temperature topt( c) detector threshold -v det (v) +v det -v det
r3113d 13 r3113d451c 4.400 4.500 4.800 4.700 4.600 -50 0 50 -25 75 25 100 temperature topt( c) detector threshold -v det (v) +v det -v det 3) output voltage vs. input voltage r3113d121c r3113d121a 0.000 0.600 1.800 1.400 1.000 0.800 0.200 0.400 1.600 1.200 0.0 0.8 1.2 0.4 0.6 0.2 1.4 1.0 1.6 input voltage v in (v) output voltage v out (v) 85 c 25 c topt=-40 c 0.000 3.000 6.000 5.000 4.000 1.000 2.000 0.0 0.8 1.2 0.4 0.6 0.2 1.4 1.0 1.6 input voltage v in (v) output voltage v out (v) 85 c 25 c topt=-40 c 5v pull-up 470k ? r3113d271c r3113d271a 0.000 1.500 4.500 3.500 2.500 2.000 4.000 3.000 0.500 1.000 0.0 2.0 3.0 1.0 1.5 0.5 3.5 2.5 4.0 input voltage v in (v) output voltage v out (v) 85 c 25 c topt=-40 c 0.000 3.000 6.000 5.000 4.000 1.000 2.000 0.0 2.0 3.0 1.0 1.5 0.5 3.5 2.5 4.0 input voltage v in (v) output voltage v out (v) 85 c 25 c topt=-40 c 5v pull-up 470k ?
r3113d 14 r3113d451c r3113d451a 0.000 3.000 7.000 5.000 4.000 6.000 1.000 2.000 0.0 4.0 2.0 3.0 1.0 5.0 6.0 input voltage v in (v) output voltage v out (v) 85 c 25 c topt=-40 c 0.000 3.000 6.000 5.000 4.000 1.000 2.000 0.0 2.0 4.0 1.0 5.0 3.0 6.0 input voltage v in (v) output voltage v out (v) 85 c 25 c topt=-40 c 5v pull-up 470k ? 4) nch driver output current vs. v ds r3113d121c r3113d121c 0 200 900 600 700 800 400 100 500 300 0.0 0.4 0.6 0.2 0.8 v ds (v) output current i out ( a) v dd =0.85v 0.7v topt=25 c 0 100 400 300 350 200 50 250 150 0.00 0.06 0.08 0.02 0.04 0.10 v ds (v) output current i out ( a) v dd =0.8v 0.7v topt=25 c r3113d271c r3113d271c 0 10 25 20 5 15 0.0 1.5 2.0 0.5 1.0 2.5 v ds (v) output current i out ( a) v dd =2.5v 1.5v 2.0v topt=25 c 0 100 400 300 350 200 50 250 150 0.00 0.06 0.08 0.02 0.04 0.10 v ds (v) output current i out ( a) v dd =0.8v 0.7v topt=25 c
r3113d 15 r3113d271c r3113d271c 0 20 70 50 10 30 60 40 0.0 3.0 1.0 2.0 4.0 v ds (v) output current i out ( a) v dd =4.5v 4.0v 3.5v 3.0v 2.5v 2.0v 1.5v topt=25 c 0 100 400 300 350 200 50 250 150 0.00 0.06 0.08 0.02 0.04 0.10 v ds (v) output current i out ( a) v dd =0.8v 0.7v topt=25 c 5) nch driver output current vs. input voltage r3113d121c r3113d271c 0.00 1.00 0.50 1.50 input voltage v in (v) output current i out (ma) 0.0 0.5 1.0 2.0 3.0 1.5 2.5 3.5 85 c topt=25 c -40 c v ds =0.5v 0.00 2.00 2.50 1.00 1.50 0.50 3.00 input voltage v in (v) output current i out (ma) 0.0 2.0 4.0 8.0 14.0 6.0 10.0 16.0 12.0 18.0 85 c topt=25 c -40 c v ds =0.5v r3113d451c 0.00 4.00 2.00 3.00 1.00 5.00 input voltage v in (v) output current i out (ma) 0.0 5.0 10.0 20.0 15.0 25.0 30.0 85 c topt=25 c -40 c v ds =0.5v
r3113d 16 6) pch driver output current vs. input voltage r3113d121c r3113d271c 04 23 5 16 input voltage v in (v) output current i out (ma) 0.0 0.5 1.5 2.5 1.0 2.0 3.0 topt=25 c v ds =0.7v 0.5v 04 23 5 16 input voltage v in (v) output current i out (ma) 0.0 1.0 3.0 5.0 6.0 2.0 4.0 7.0 topt=25 c v ds =2.1v 1.5v 1.0v 0.5v r3113d451c 04 23 5 16 input voltage v in (v) output current i out (ma) 0.0 1.0 3.0 5.0 6.0 2.0 4.0 7.0 topt=25 c v ds =2.1v 1.5v 1.0v 0.5v 7) output delay time vs. load capacitance r3113d121a r3113d271a 0.00 0.10 100.00 10.00 1.00 0.01 0.0001 0.001 0.01 0.1 output pin external capacitance c out ( f) output delay time t plh (ms) t plh t phl 0.00 0.10 100.00 10.00 1.00 0.01 0.0001 0.001 0.01 0.1 output pin external capacitance c out ( f) output delay time t plh (ms) t plh t phl
r3113d 17 r3113d451a 0.00 0.10 100.00 10.00 1.00 0.01 0.0001 0.001 0.01 0.1 output pin external capacitance c out ( f) output delay time t plh (ms) t plh t phl 8) output delay time vs. input pin capacitance r3113d121a r3113d271a 0.00 0.10 100.00 10.00 1.00 0.01 0.0001 0.001 0.01 0.1 input pin external capacitance c in ( f) output delay time t phl (ms) t plh t phl 0.00 0.10 100.00 10.00 1.00 0.01 0.0001 0.001 0.01 0.1 input pin external capacitance c in ( f) output delay time t phl (ms) t plh t phl r3113d451a 0.00 0.10 100.00 10.00 1.00 0.01 0.0001 0.001 0.01 0.1 input pin external capacitance c in ( f) output delay time t phl (ms) t plh t phl
r3113d 18 technical notes v dd gnd out v dd v dd gnd out v dd figure 9 figure 10 1. in figure 9, when r3113dxx1c is used, and if an impedance is connected between voltage supplier and the v dd pin of r3113dxx1c series, the operation might be unstable by cross conduction current at detection. when r3113dxx1a is used in figure 9, if the val ue of r is set excessively large, voltage drop may occur caused by supply current of ic itse lf and detector threshold may vary. 2. wiring as shown in figure 10 may cause the oscillation in both output types of r3113 series.

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