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r3114x series 0.8% low voltage detector no.ea-160-110106 1 outline the r3114x series are cmos-based voltage detector ic s with high detector threshold accuracy and ultra-low supply current, which can be operated at an extremely lo w 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 type and cmos type are available. the r3114x series are operable at a lower voltage than that of the r3111x series, and can be driven by a single battery. three types of packages, sot-23-5, sc- 82ab, and dfn(plp)1010-4 are available. features ? supply current ................................................................... typ. 0.35 a (-v det = 1.5v, v dd = -v det + 1v) ? operating voltage rang e................................................... 0.5v to 6.0v (t opt = 25 c) ? detector threshol d range................................................. 0.7v to 5.0v (0.1v steps) ( for other voltages, please refer to mark informations.) ? detector threshold accuracy............................................. 0.8% (-v det 1.5v) ? temperature-drift coefficient of detector threshold ......... typ. 30ppm/ c ? output types ...................................................................... nch open drain "l" and cmos ? packages ........................................................................... dfn( plp)1010-4, sc-82ab, sot-23-5 applications ? cpu and logic circuit reset ? battery checker ? window comparator ? wave shaping circuit ? battery back-up circuit ? power failure detector
r3114x 2 block diagrams nch open drain output (r3114xxx1a) cmos output (r3114xxx1c) out v dd vref gnd out v dd gnd vref selection guide the package type, the detector thre shold, the output type and the taping type for the ics can be selected at the users? request. product name package quantity per reel pb free halogen free r3114kxx1 ? -tr dfn(plp)1010-4 10,000 pcs yes yes r3114qxx1 ? -tr-fe sc-82ab 3,000 pcs yes yes r3114nxx1 ? -tr-fe sot-23-5 3,000 pcs yes yes xx : the detector threshold can be designated in the range from 0.7v(07) to 5.0v(50) in 0.1v steps. (for other voltages, please refer to mark informations.) ? : designation of output type (a) nch open drain (c) cmos
r3114x 3 pin configurations ? dfn(plp)1010-4 ? top view 2 1 3 4 bottom view 1 2 4 3 ? sot-23-5 ? sc-82ab 1 4 5 23 (mark side) 12 3 4 (mark side) pin descriptions ? dfn(plp)1010-4 ? ? sot-23-5 pin no. symbol description pin no. symbol description 1 out output pin ("l" at detection) 1 out output pin ("l" at detection) 2 nc no connection 2 v dd input pin 3 gnd ground pin 3 gnd ground pin 4 v dd input pin 4 nc no connection 5 nc no connection ? sc-82ab pin no. symbol description 1 out output pin ("l" at detection) 2 v dd input pin 3 nc no connection 4 gnd ground pin ? ) tab is gnd level. (they are connected to the reverse side of this ic.) the tab is better to be connected to the gnd, but leaving it open is also acceptable.
r3114x 4 absolute maximum ratings symbol item rating unit v dd supply voltage 7.0 v output voltage (nch open drain output) v ss ? 0.3 to 7.0 v out output voltage (cmos output) v ss ? 0.3 to v dd + 0.3 v i out output current 20 ma power dissipation (sot-23-5) ? 420 power dissipation (sc-82ab) ? 380 p d power dissipation (dfn(plp)1010-4) ? 400 mw topt operating temperature range ? 40 to 85 c tstg storage temperature range ? 55 to 125 c ? ) for power dissipation, please refer to package information. absolute maximum ratings electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safe ty for both device and sy stem using the device in the field. the functional operation at or over these absolute maximum ratings is not assured. recommended operating conditions (electrical characteristics) all of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. the semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. and the semiconductor de vices may receive serious damage when they continue to operate over the recommended operating conditions.
r3114x 5 electrical characteristics ? r3114x071a/c values indicate ? 40c t opt 85c, unless otherwise noted. topt = 25 c symbol item conditions min. typ. max. unit t opt = 25 c 0.6880 0.7120 -v det detector threshold ? 40 c t opt 85 c 0.6775 0.7 0.7225 v v hys detector threshold hysteresis 0.028 0.049 v v dd = 0.6v 1.4 i ss supply current v dd = 1.7v 1.2 a v ddh maximum operating voltage 6 v t opt = 25 c 0.50 v ddl minimum operating voltage ? 1 ? 40 c t opt 85 c 0.55 v v dd = 0.55v, v ds = 0.05v 7 a nch v dd = 0.6v, v ds = 0.5v 0.02 ma i out output current (driver output pin) pch ? 2 v dd = 4.5v, v ds =? 2.1v 0.65 ma i leak nch driver leakage current ? 3 v dd = 6.0v, v ds = 7.0v 80 na -v det / t opt detector threshold temperature coefficient ? 40 c t opt 85 c 30 ppm / c t plh output delay time v dd = 0.55v 2.7v 40 s ? r3114x151a/c values indicate ? 40c t opt 85c, unless otherwise noted. topt = 25 c symbol item conditions min. typ. max. unit t opt = 25 c 1.4880 1.5120 -v det detector threshold ? 40 c t opt 85 c 1.4775 1.5 1.5225 v v hys detector threshold hysteresis 0.060 0.105 v v dd = 1.4v 1.4 i ss supply current v dd = 2.5v 0.35 1.2 a v ddh maximum operating voltage 6 v t opt = 25 c 0.50 v ddl minimum operating voltage ? 1 ? 40 c t opt 85 c 0.55 v v dd = 0.55v, v ds = 0.05v 7 a nch v dd = 1.0v, v ds = 0.5v 0.40 ma i out output current (driver output pin) pch ? 2 v dd = 4.5v, v ds =? 2.1v 0.65 ma i leak nch driver leakage current ? 3 v dd = 6.0v, v ds = 7.0v 80 na -v det / t opt detector threshold temperature coefficient ? 40 c t opt 85 c 30 ppm / c t plh output delay time v dd = 0.55v 3.5v 40 s all of unit are tested and specified under load conditions such that t opt = 25c except for detector threshold temperature coefficient. ? 1: minimum operating voltage means the value of input voltage when output voltage maintains 0.1v or less. (in case of nch open drain output type, the output pin is pulled up with a resistance of 470k ? to 5.0v) ? 2: in case of cmos type ? 3: in case of nch open drain type
r3114x 6 ? r3114x271a/c values indicate ? 40c t opt 85c, unless otherwise noted. topt = 25 c symbol item conditions min. typ. max. unit t opt = 25 c 2.6784 2.7216 -v det detector threshold ? 40 c t opt 85 c 2.6595 2.7 2.7405 v v hys detector threshold hysteresis 0.108 0.189 v v dd = 2.6v 1.5 i ss supply current v dd = 3.7v 1.2 a v ddh maximum operating voltage 6 v t opt = 25 c 0.50 v ddl minimum operating voltage ? 1 ? 40 c t opt 85 c 0.55 v v dd = 0.55v, v ds = 0.05v 7 a nch v dd = 1.5v, v ds = 0.5v 1.00 ma i out output current (driver output pin) pch ? 2 v dd = 4.5v, v ds =? 2.1v 0.65 ma i leak nch driver leakage current ? 3 v dd = 6.0v, v ds = 7.0v 80 na -v det / t opt detector threshold temperature coefficient ? 40 c t opt 85 c 30 ppm / c t plh output delay time v dd = 0.55v 4.7v 40 s ? r3114x451a/c values indicate ? 40c t opt 85c, unless otherwise noted. topt = 25 c symbol item conditions min. typ. max. unit t opt = 25 c 4.4640 4.5360 -v det detector threshold ? 40 c t opt 85 c 4.4325 4.5 4.5675 v v hys detector threshold hysteresis 0.180 0.315 v v dd = 4.4v 1.7 i ss supply current v dd = 5.5v 1.4 a v ddh maximum operating voltage 6 v t opt = 25 c 0.50 v ddl minimum operating voltage ? 1 ? 40 c t opt 85 c 0.55 v v dd = 0.55v, v ds = 0.05v 7 a nch v dd = 3.0v, v ds = 0.5v 2.40 ma i out output current (driver output pin) pch ? 2 v dd = 6.0v, v ds =? 2.1v 0.90 ma i leak nch driver leakage current ? 3 v dd = 6.0v, v ds = 7.0v 80 na -v det / t opt detector threshold temperature coefficient ? 40 c t opt 85 c 30 ppm / c t plh output delay time v dd = 0.55v 6.0v 40 s all of unit are tested and specified under load conditions such that t opt =25c except for detector threshold temperature coefficient. ? 1: minimum operating voltage means the value of input voltage when output voltage maintains 0.1v or less. (in case of nch open drain output type, the output pin is pulled up with a resistance of 470k ? to 5.0v) ? 2: in case of cmos type ? 3: in case of nch open drain type
r3114x 7 timing chart detector threshold t plh gnd gnd v ddl - v det +v det detector threshold released voltage minimum operating voltage pull-up voltage supply voltage (v dd ) output voltage (v out ) r3114xxx1a hysteresis t plh r3114xxx1c detector threshold hysteresis t phl t phl 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 0.55v to (-v det ) + 2.0v or the time interval of 6.0v pulse voltage is supplied, the 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 0.55v to (-v det ) + 2.0v or the time interval of 6.0v pulse voltage is supplied, the becoming of the output voltage to ((-v det ) + 2.0v)/2 or 3.0v. -v det + 2.0v or 6.0v 0.55v supply voltage (v dd ) gnd 5.0v 2.5v gnd output voltage (v out ) t plh t phl -v det + + + nch open drain output cmos output (r3114xxx1a) (r3114xxx1c)
r3114x 8 electrical characteristics by detector threshold ? r3114x071a/c to r3114x501a/c bold values are checked and guaranteed by design engineering at ? 40 c t opt 85 c, unless otherwise noted. topt=25 c detector threshold1 detector threshold2 detector threshold hysteresis supply current1 supply current2 max. op. voltage min. op. voltage - v det1 [v] - v det2 [v] v hys [v] i ss1 [a] i ss2 [a] v ddh [v] v ddl [v] part number min. max. min. max. min. max. cond. max. cond. max. max. max. r3114x071a/c 0.6880 0.7120 0.6775 0.7225 0.028 0.049 r3114x081a/c 0.7880 0.8120 0.7775 0.8225 0.032 0.056 r3114x091a/c 0.8880 0.9120 0.8775 0.9225 0.036 0.063 r3114x101a/c 0.9880 1.0120 0.9775 1.0225 0.040 0.070 r3114x111a/c 1.0880 1.1120 1.0775 1.1225 0.044 0.077 r3114x121a/c 1.1880 1.2120 1.1775 1.2225 0.048 0.084 r3114x131a/c 1.2880 1.3120 1.2775 1.3225 0.052 0.091 r3114x141a/c 1.3880 1.4120 1.3775 1.4225 0.056 0.098 r3114x151a/c 1.4880 1.5120 1.4775 1.5225 0.060 0.105 1.400 r3114x161a/c 1.5872 1.6128 1.5760 1.6240 0.064 0.112 r3114x171a/c 1.6864 1.7136 1.6745 1.7255 0.068 0.119 r3114x181a/c 1.7856 1.8144 1.7730 1.8270 0.072 0.126 r3114x191a/c 1.8848 1.9152 1.8715 1.9285 0.076 0.133 r3114x201a/c 1.9840 2.0160 1.9700 2.0300 0.080 0.140 r3114x211a/c 2.0832 2.1168 2.0685 2.1315 0.084 0.147 r3114x221a/c 2.1824 2.2176 2.1670 2.2330 0.088 0.154 r3114x231a/c 2.2816 2.3184 2.2655 2.3345 0.092 0.161 r3114x241a/c 2.3808 2.4192 2.3640 2.4360 0.096 0.168 r3114x251a/c 2.4800 2.5200 2.4625 2.5375 0.100 0.175 r3114x261a/c 2.5792 2.6208 2.5610 2.6390 0.104 0.182 r3114x271a/c 2.6784 2.7216 2.6595 2.7405 0.108 0.189 r3114x281a/c 2.7776 2.8224 2.7580 2.8420 0.112 0.196 r3114x291a/c 2.8768 2.9232 2.8565 2.9435 0.116 0.203 r3114x301a/c 2.9760 3.0240 2.9550 3.0450 0.120 0.210 1.500 1.200 r3114x311a/c 3.0752 3.1248 3.0535 3.1465 0.124 0.217 r3114x321a/c 3.1744 3.2256 3.1520 3.2480 0.128 0.224 r3114x331a/c 3.2736 3.3264 3.2505 3.3495 0.132 0.231 r3114x341a/c 3.3728 3.4272 3.3490 3.4510 0.136 0.238 r3114x351a/c 3.4720 3.5280 3.4475 3.5525 0.140 0.245 r3114x361a/c 3.5712 3.6288 3.5460 3.6540 0.144 0.252 r3114x371a/c 3.6704 3.7296 3.6445 3.7555 0.148 0.259 r3114x381a/c 3.7696 3.8304 3.7430 3.8570 0.152 0.266 r3114x391a/c 3.8688 3.9312 3.8415 3.9585 0.156 0.273 r3114x401a/c 3.9680 4.0320 3.9400 4.0600 0.160 0.280 1.600 1.300 r3114x411a/c 4.0672 4.1328 4.0385 4.1615 0.164 0.287 r3114x421a/c 4.1664 4.2336 4.1370 4.2630 0.168 0.294 r3114x431a/c 4.2656 4.3344 4.2355 4.3645 0.172 0.301 r3114x441a/c 4.3648 4.4352 4.3340 4.4660 0.176 0.308 r3114x451a/c 4.4640 4.5360 4.4325 4.5675 0.180 0.315 r3114x461a/c 4.5632 4.6368 4.5310 4.6690 0.184 0.322 r3114x471a/c 4.6624 4.7376 4.6295 4.7705 0.188 0.329 r3114x481a/c 4.7616 4.8384 4.7280 4.8720 0.192 0.336 r3114x491a/c 4.8608 4.9392 4.8265 4.9735 0.196 0.343 r3114x501a/c 4.9600 5.0400 4.9250 5.0750 0.200 0.350 v dd = -v det -0.1v 1.700 v dd = -v det +1.0v 1.400 6 0.50 0.55 ? note1 ? note1) v dd value when output voltage is equal or less than 0.1v. in the case of nch open drai n output type, the output pin is pulled up to 5.0v through 470k ? resistor.
r3114x 9 ? note2) 1. in the case of cmos output type: when the voltage is forced from 0.55v to (-v det ) + 2.0v or a 6.0v pulse voltage is added to v dd , time interval that the output vo ltage reaches ((-v det ) + 2.0v)/2 or a 3.0v. 2. in the case of nch open drain output type: the output pin is pulled up to 5.0v through 470k ? , and when the voltage is forced from 0.55v to (-v det ) + 2.0v or a 6.0v pulse voltage is added to v dd , time interval that the output voltage reaches 2.5v. nch driver output current1 nch driver output current2 pch driver output current nch driver leakage current detector threshold temperature coefficient output delay time i out1 [a] i out2 [ma] i out3 [ma] i leak [na] ? -v det / ? t opt [ppm/c] t plh [s] cond. min. cond. min. cond. min. cond. max. typ. cond. typ. v dd = 0.6v v ds = 0.5v 0.020 v dd = 1.0v v ds = 0.5v 0.400 v dd = 1.5v v ds = 0.5v 1.000 v dd = 4.5v v ds = -2.1v 0.650 v dd = 0.55v -v det +2.0v ? note2 v dd = 0.55v v ds = 0.05v 7 v dd = 3.0v v ds = 0.5v 2.400 v dd = 6.0v v ds = -2.1v 0.900 v dd = 6.0v v ds = 7.0v 80 30 v dd = 0.55v 6.0v ? note2 40
r3114x 10 operation ? operation of r3114xxx1a vref ra rb rc v dd out gnd tr.1 nch com p arator out pin should be pulled-up to v dd or an external voltage level. block diagram (r3114xxx1a) 13 5 a b t plh 2 4 gnd gnd v ddl - v det +v det detector threshold released voltage minimum operating voltage pull-up voltage detector threshold hysteresis supply voltage (v dd ) output voltage (v out ) t phl detect delay time step 1 2 3 4 5 comparator ( ? ) pin input voltage i ii ii ii i comparator output l h indefinite h l tr.1 off on indefinite on off output tr. nch off on indefinite on off i v dd rb + + rb + rc ii v dd rb ra + rb operation diagram ? explanation of operation step 1. the output voltage is equal to the pull-up voltage. step 2. at point "a", vref > = v dd (rb + rc)/(ra + rb + rc) is true, as a result, the output of comparator is reversed from "l" to "h", therefore the output voltage become s the gnd level. the voltage level of point a means a detector threshold voltage (-v det ). step 3. when the supply voltage is lower than the minimum operating voltage, t he operation of the output transistor becomes indefinite. the output voltage is equal to the pull-up voltage. step 4. the output voltage is equal to the gnd level. step 5. at point "b", vref < = v dd rb/(ra + rb) is true, as a result, the output of comparator is reversed from "h" to "l", then the output voltage is equal to the pull-up vo ltage. the voltage level of point b means a released voltage (+v det ). ? ) the difference between a released voltage and a detector threshold voltage is a detector threshold hysteresis. output delay time
r3114x 11 ? operation of r3114xxx1c vref ra rb rc v dd out gnd tr.1 nch pch com p arato r block diagram (r3114xxx1c) t plh gnd gnd v ddl - v det +v det detector threshold released voltage minimum operating voltage 1 2 3 4 5 a b detector threshold hysteresis supply voltage (v dd ) output voltage (v out ) t phl detect delay time step 1 2 3 4 5 comparator ( ? ) pin input voltage i ii ii ii i comparator output l h indefinite h l tr.1 off on indefinite on off pch on off indefinite off on output tr. nch off on indefinite on off i v dd rb + + rb + rc ii v dd rb ra + rb operation diagram ? explanation of operation 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 output of comparator is reversed from "l" to "h", therefore the output voltage becomes the gnd level. the voltage level of point a means a detector threshold voltage (-v det ). step 3. when the supply voltage is lower than the minimum operating voltage, t he operation of the output transistor becomes indefinite. step 4. the output voltage is equal to the gnd level. step 5. at point "b", vref < = v dd rb/(ra + rb) is true, as a result, the output of comparator is reversed from "h" to "l", then the output voltage is equal to the supply voltage (v dd ). the voltage level of point b means a released voltage (+v det ). ? ) the difference between a released voltage and a detector threshold voltage is a detector threshold hysteresis. output delay time
r3114x 12 detector operation vs. glitch input voltage to the v dd pin when the r3114x is at released, if the pulse voltage which the detector threshold or lower voltage, the graph below means that the relation between pulse width and t he amplitude of the swing to keep the released state for the r3114x. 100 40 80 20 60 50 90 70 30 10 0 10 100 1000 over drive voltage (mv) pulse width ( s) r3114x071a/c r3114x501a/c 100 40 80 20 60 50 90 70 30 10 0 10 100 1000 over drive voltage (mv) pulse width ( s) r3114x071a/c r3114x501a/c detector threshold (-v det ) over drive pulse width supply voltage (v dd ) v dd input waveform this graph shows the maximum pulse conditions to keep the released voltage. if the pulse with larger amplitude or wider width than the graph above, is input to v dd pin, the reset signal may be output. v dd = -v det + 2v -v det ? v od (r3114x071a/c) v dd = -v det + 1v -v det ? v od (r3114x501a/c) ? v od : over drive voltage v dd = -v det ? v od (r3114x071a/c, r3114x501a/c)
r3114x 13 test circuits gnd v dd v in i ss r3114x series gnd v dd v in r3114x series out 470k 5v or v dd v out supply current test circuit detector threshold test circuit (pull-up circuit is not necessary for cmos output type.) gnd v dd v in r3114x series out v ds i out gnd v dd v in r3114xxx1c series out v dd ? nch driver output current test circuit pch driver output current test circuit ? apply to cmos output type only gnd v dd 6v r3114xxx1a series out 7v i leak gnd v dd r3114x series out 5v 470k + nch driver leakage current test circuit output delay time test circuit ? apply to nch driver output type only (p ull-up circuit is not necessary for cmos output type.)
r3114x 14 typical characteristics 1) supply current vs. input voltage r3114x071a/c r3114x151a/c 04 256 3 17 input voltage v dd (v) supply current i ss ( a) 0 1.0 0.6 0.4 0.2 0.8 topt=85 c topt=25 c topt=- 40 c 04 256 3 17 input voltage v dd (v) supply current i ss ( a) 0 1.0 0.6 0.4 0.2 0.8 topt=85 c topt=25 c topt=- 40 c r3114x271a/c r3114x451a/c 04 256 3 17 input voltage v dd (v) supply current i ss ( a) 0 1.0 0.6 0.4 0.2 0.8 topt=85 c topt=25 c topt=- 40 c 04 256 3 17 input voltage v dd (v) supply current i ss ( a) 0 1.0 0.6 0.4 0.2 0.8 topt=85 c topt=25 c topt=- 40 c 2) detector threshold vs. temperature r3114x071a/c r3114x151a/c temperature topt ( c) detector threshold/released voltage v det (v) 0.69 0.75 0.74 0.73 0.72 0.71 0.70 -40 75 50 025 -25 85 -v det +v det temperature topt ( c) 1.48 1.60 1.58 1.56 1.54 1.52 1.50 -v det +v det -40 75 50 025 -25 85 detector threshold/released voltage v det (v)
r3114x 15 r3114x271a/c r3114x451a/c temperature topt ( c) 2.65 2.90 2.85 2.80 2.75 2.70 -v det +v det -40 75 50 025 -25 85 detector threshold/released voltage v det (v) temperature topt ( c) 4.4 4.9 4.8 4.7 4.6 4.5 -v det +v det -40 75 50 025 -25 85 detector threshold/released voltage v det (v) 3) output voltage vs. input voltage r3114x071c r3114x151c 0 0.8 0.4 0.6 0.2 1.0 input voltage v dd (v) output voltage v out (v) 0 1.2 0.6 0.4 0.2 0.8 1.0 topt=- 40 c topt=25 c topt=85 c 0 1.6 0.8 1.2 0.4 2.0 input voltage v dd (v) output voltage v out (v) 0 2.5 1.5 1.0 0.5 2.0 topt=- 40 c topt=25 c topt=85 c r3114x271c r3114x451c 0 2.0 2.5 1.0 1.5 0.5 3.0 input voltage v dd (v) output voltage v out (v) 0 3.5 1.5 1.0 0.5 2.5 2.0 3.0 topt=- 40 c topt=25 c topt=85 c 0 3.0 4.0 1.0 2.0 3.5 4.5 1.5 2.5 0.5 5.0 input voltage v dd (v) output voltage v out (v) 0 6 2 1 4 3 5 topt=- 40 c topt=25 c topt=85 c
r3114x 16 r3114x071a r3114x151a 0 0.8 0.4 0.6 0.2 1.0 input voltage v dd (v) output voltage v out (v) 0 6 3 2 1 4 5 470k 5v pull-up topt=- 40 c topt=25 c topt=85 c 0 1.6 0.8 1.2 0.4 2.0 input voltage v dd (v) output voltage v out (v) 0 6 4 2 3 1 5 470k 5v pull-up topt=- 40 c topt=25 c topt=85 c r3114x271a r3114x451a 0 2.0 2.5 1.0 1.5 0.5 3.0 input voltage v dd (v) output voltage v out (v) 0 6 4 2 3 1 5 470k 5v pull-up topt=- 40 c topt=25 c topt=85 c 0 3.0 4.0 1.0 2.0 3.5 4.5 1.5 2.5 0.5 5.0 input voltage v dd (v) output voltage v out (v) 0 6 4 2 3 1 5 470k 5v pull-up topt=- 40 c topt=25 c topt=85 c 4) nch driver output current vs. input voltage (v ds =0.5v) r3114x071a/c r3114x151a/c 0 0.6 0.8 0.4 0.2 1.0 input voltage v dd (v) nch driver output current i out (ma) 0 0.25 0.20 0.15 0.10 0.05 topt=- 40 c topt=25 c topt=85 c 0 1.5 1.0 0.5 2.0 input voltage v dd (v) nch driver output current i out (ma) 0 3.0 2.0 2.5 1.5 1.0 0.5 topt=- 40 c topt=25 c topt=85 c
r3114x 17 r3114x271a/c r3114x451a/c 0 2.0 1.0 2.5 1.5 0.5 3.0 input voltage v dd (v) nch driver output current i out (ma) 0 7.5 4.5 6.0 3.0 1.5 topt=- 40 c topt=25 c topt=85 c 04 23 15 input voltage v dd (v) nch driver output current i out (ma) 0 12 6 8 10 4 2 topt=- 40 c topt=25 c topt=85 c 5) nch driver output current vs. v ds r3114x071a/c r3114x151a/c 0 0.4 0.2 0.6 v ds (v) nch driver output current i out (ma) 0 0.20 0.10 0.05 0.15 v dd =0.6v 0 0.6 0.8 0.4 0.2 1.0 v ds (v) nch driver output current i out (ma) 0 0.8 0.4 0.2 0.6 v dd =1.0v v dd =0.6v r3114x271a/c r3114x451a/c 0 1.5 1.0 0.5 2.0 v ds (v) nch driver output current i out (ma) 0 8 4 2 6 v dd =2.0v v dd =1.0v v dd =0.6v 0 3.0 2.0 1.0 4.0 v ds (v) nch driver output current i out (ma) 0 20 10 5 15 v dd =4.0v v dd =3.0v v dd =2.0v v dd =1.0v v dd =0.6v
r3114x 18 6) pch driver output current vs. input voltage (v ds = ? 2.1v) r3114x071c r3114x151c 06 35 24 17 input voltage v dd (v) pch driver output current i out (ma) 0 2.0 1.0 0.5 1.5 topt=- 40 c topt=25 c topt=85 c 06 35 24 17 input voltage v dd (v) pch driver output current i out (ma) 0 2.0 1.0 0.5 1.5 topt=- 40 c topt=25 c topt=85 c r3114x271c r3114x451c 06 35 24 17 input voltage v dd (v) pch driver output current i out (ma) 0 2.0 1.0 0.5 1.5 topt=- 40 c topt=25 c topt=85 c 06 35 24 17 input voltage v dd (v) pch driver output current i out (ma) 0 2.0 1.0 0.5 1.5 topt=- 40 c topt=25 c topt=85 c 7) pch driver output current vs. v ds r3114x071c r3114x151c 04 25 3 16 v ds (v) pch driver output current i out (ma) 0 2.5 1.0 0.5 1.5 2.0 v dd =5.0v v dd =4.0v v dd =6.0v v dd =3.0v v dd =2.0v v dd =1.0v 04 25 3 16 v ds (v) pch driver output current i out (ma) 0 2.5 1.0 0.5 1.5 2.0 v dd =5.0v v dd =4.0v v dd =6.0v v dd =3.0v v dd =2.0v
r3114x 19 r3114x271c r3114x451c 04 25 3 16 v ds (v) pch driver output current i out (ma) 0 2.5 1.0 0.5 1.5 2.0 v dd =5.0v v dd =4.0v v dd =6.0v v dd =3.0v 04 25 3 16 v ds (v) pch driver output current i out (ma) 0 2.5 1.0 0.5 1.5 2.0 v dd =5.0v v dd =6.0v 8) output delay time vs. external capacitance r3114x071a r3114x151a 100 10 1 0.1 0.01 0.0001 0.001 0.01 0.1 external capacitance c out ( f) delay time t plh /t phl (ms) t phl t plh 100 10 1 0.1 0.01 0.0001 0.001 0.01 0.1 external capacitance c out ( f) delay time t plh /t phl (ms) t phl t plh r3114x271a r3114x451a 100 10 1 0.1 0.01 0.0001 0.001 0.01 0.1 external capacitance c out ( f) delay time t plh /t phl (ms) t phl t plh 100 10 1 0.1 0.01 0.0001 0.001 0.01 0.1 t phl t plh external capacitance c out ( f) delay time t plh /t phl (ms)
r3114x 20 typical application ? r3114xxx1a cpu reset circuit 1 (nch open drain output) case1. input voltage to r3114xxx1a is equal to input voltage to cpu case2. input voltage to r3114xxx1a is unequal to input voltage to cpu r3114xxx1a series v dd gnd out r v dd reset cpu gnd v dd 470k r3114xxx1a series v dd gnd out r v dd reset cpu gnd v dd2 v dd1 470k ? r3114xxx1c cpu reset circuit (cmos output) r3114xxx1c v dd gnd out v dd reset cpu gnd v dd series ? r3114xxx1a output delay time circuit 1 (nch open drain output) ? r3114xxx1a output delay time circuit 2 (nch open drain output) r3114xxx1a series v dd gnd out r v dd reset cpu gnd v dd2 470k v dd1 r3114xxx1a series v dd gnd out r2 v dd reset cpu gnd v dd 470k ? memory back-up circuit r3114xxx1c series gnd v dd d1 d2 v dd gnd out a b c y1 y2 y3 y4 v cc v cc ram1 gnd cs v cc ram2 gnd cs v cc ram3 gnd cs v cc ram4 gnd cs
r3114x 21 ? voltage level indicator circuit (lighted when the power runs out) (nch open drain output) r3114xxx1a series v dd gnd out v dd ? detector threshold adjustable circuit 1 (nch open drain output) r3114xxx1a series gnd v dd v up r up out rb v dd ra adjustable detector threshold = (-v det ) (ra + rb)/rb hysteresis voltage = (v hys ) (ra + rb)/rb ? 1) to prevent oscillation, set ra 1k ? , rb 100 ? . ? 2) if the value of ra is set excessively large, voltage drop may occur caused by the supply current of ic itself, and detector threshold and hysteresis voltage may vary. ? 3) if v up and v dd are connected, the voltage dropdown caused by r up , may cause difference in the hysteresis voltage. ? detector threshold adjustable circuit 2 (nch open drain output) r3114xxx1a series gnd v dd v up r up out rb v dd ra c adjustable detector threshold = (-v det ) (ra + rb)/rb hysteresis voltage = (v hys ) (ra + rb)/rb ? 1) to prevent oscillation, set ra 100k ? , c 0.01 f. ? 2) if the value of ra is set excessively large, voltage drop may occur caused by the supply current of ic itself, and detector threshold and hysteresis voltage may vary. ? 3) if v up and v dd are connected, the voltage dropdown caused by r up , may cause difference in the hysteresis voltage. ? 4) if the value of ra, rb and c are set excessively large, the delay of the star t-up may become too long.
r3114x 22 ? window comparator circuit (nch open drain output) r3114xxx1a v dd gnd out v dd r3114xxx1a series v dd gnd out -v det1 wc_o u series r up1 r up2 -v det2 v dd -v det1 gnd gnd wc_out -v det2 ? over-charge preventing circuit r3114xxx1c series v dd gnd out r4 r2 r1 r3 light solar battery d1 load
r3114x 23 technical notes when r3114xxx1a/c is used in figure x, if the value of r1 is set excessively large, the dropdown voltage caused by the consumption current of ic itself, may vary the detector threshold and the release voltage. also, if the value of r1 is set excessively large, there may be delay in start-up and may cause oscillation generated by cross conduction current. when r3114xxx1a/c is used in figure y, if the value of r1 is set excessively large, the dropdown voltage caused by the consumption current of ic itself, may va ry the detecor threshold and the released voltage. also, if the value of r1 and r2 is set exce ssively large, there may be delay in start-up and may cause oscillation generated by cross conduction current. when r3114xxx1a/c is used in figure z, if the value of r1 is set excessively large, the dropdown voltage caused by the consumption current of ic itself may vary the detector threshold and the release voltage. also, if the value of r1 is set excessively large, there may be delay in start-up and may cause oscillation generated by cross conduction current. furthermore, if the value of r1 is set large and the value of r2 is set small, released voltage level may shift and the minimum operating voltage may differ. if the value of r2 is set excessively small from r1, release may not occur and may cause oscillation. gnd v dd r3114x series out r2 r3114x series out gnd gnd v dd r3114x series out r2 r1 v dd r1 v dd r1 v dd figure x figure y figure z
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