147 general description elm 97xxxxa series is a cmos voltage detector ic for battery-operated portable devices. it consists of a very low-power-consumption reference voltage source, a comparator, an output driver, a hysteresis circuit, and detection voltage setting resistors. output logic is positive, therefore output level is low when vdd is lower than detection voltage. it can be used as a reset controller in microcomputer-based systems. and it can be widely applied to the devices, such as battery checkers, switching circuit of back-up power source, power failure detectors, etc. two output styles are available, n-ch opendrain and cmos output. it is available in sot-89 and sot-23. features ? low power operation : typ. 1.0 a (vdd = 1.5v) ? low voltage operation : reset operation assured at 0.8v ? high accuracy of detection voltage : 2.5% ? low temperature coefficient : typ. - 300ppm/ (detection voltage 2.0v) : typ. - 100ppm/ (detection voltage R 2.0v) ? very small package : sot-89, sot-23 application ? reset for microcomputer ? battery checker ? power failure detector ? switching of back-up power source pin no. pin name 1 out 2 vdd 3 vss elm97xxxxa elm97xxxxa elm97xxxxa elm97xxxxa elm97xxxxa voltage detector pin no. pin name 1 out 2 vss 3 vdd pin configuration 1 23 ( top view ) sot-89 1 2 3 ( top view ) sot-23
148 voltage detector elm97xxxxa selection guide symbol ex 09 : vdetn = 0.9v 27 : vdetn = 2.7v 45 : vdetn = 4.5v c : cmos output n : n-ch opendrain output a : sot-89 b : sot-23 e product version a : a version d package a, b detection voltage c output form elm97 x x x x a elm97 x x x x a elm97 x x x x a elm97 x x x x a elm97 x x x x a a b c d e a b c d e a b c d e a b c d e a b c d e series detection output detection output voltage form voltage form elm9709nba-s(n) 0.9v n-ch sot-23 elm9727caa-s(n) 2.7v cmos sot-89 elm97 1 0nba-s(n) 1.0v n-ch sot-23 ELM9730CAA-s(n) 3.0v cmos sot-89 elm97 11 nba-s(n) 1.1v n-ch sot-23 elm9732caa-s(n) 3.2v cmos sot-89 elm9722caa-s(n) 2.2v cmos sot-89 elm9734caa-s(n) 3.4v cmos sot-89 elm9724caa-s(n) 2.4v cmos sot-89 elm9745caa-s(n) 4.5v cmos sot-89 elm9725caa-s(n) 2.5v cmos sot-89 elm9748caa-s(n) 4.8v cmos sot-89 s type : standard, n type : reverse model package model package * available 0.9v 5.0v detection voltage for n-ch output and 2.0v 5.0v detection voltage for cmos output at 0. 1 v step as semi-custom-made ic.
149 voltage detector elm97xxxxa marking sot-89 ? ? sot-23 ??? rule 2 : represents the elm97xxxxa series elm97xxxxa series = a : represents the integer digit of the detection voltage : represents the decimal digit of the detection voltage : represents the assembly lot number 0 9, a z repeated (i,o,x excepted) symbol detection voltage symbol detection voltage 0 0.*v (n-ch) y 2.*v (cmos) 1 1.*v (n-ch) w 3.*v (cmos) 2 2.*v (n-ch) u 4.*v (cmos) 3 3.*v (n-ch) v 5.*v (cmos) 4 4.*v (n-ch) 5 5.*v (n-ch) symbol detection voltage symbol detection voltage 0 *.0v 5 *.5v 1 *.1v 6 *.6v 2 *.2v 7 *.7v 3 *.3v 8 *.8v 4 *.4v 9 *.9v rule 1 : represents the integer digit of the detection voltage : represents the decimal digit of the detection voltage : represents the assembly lot number a z repeated (i,o,x excepted) : represents the assembly lot number 0 9 repeated symbol detection voltage symbol detection voltage a 0.*v (n-ch) p 2.*v (cmos) b 1.*v (n-ch) r 3.*v (cmos) c 2.*v (n-ch) s 4.*v (cmos) d 3.*v (n-ch) t 5.*v (cmos) e 4.*v (n-ch) f 5.*v (n-ch) symbol detection voltage symbol detection voltage 0 *.0v 5 *.5v 1 *.1v 6 *.6v 2 *.2v 7 *.7v 3 *.3v 8 *.8v 4 *.4v 9 *.9v *remarks --- elm97xxxxa series have two kind of mraking rules each package.
150 voltage detector elm97xxxxa timing chart block diagram 1 .cmos output 2.n-ch opendrain output vref vdd out vss + - vdd vss vref + - out vdetn vhys vopmin tphl tplh vss vss vdetp vdd out maximum absolute ratings (vss=0v) parameter limits units power supply voltage 10 v cmos vss-0.3 vdd+0.3 n-ch vss-0.3 +10 output current 50 ma sot-89 300 sot-23 200 operating temperature -30 +80 storage temperature -40 +125 output voltage power dissipation vout pd symbol vdd iout top tstg v mw
151 voltage detector elm97xxxxa elm9709nba elm9709nba elm9709nba elm9709nba (top=25 ) parameter symbol conditions min. typ. max. units remarks detection voltage vdetn 0.878 0.900 0.922 v 2 vdetn vdetn 0.02 0.08 current consumption iss vdd=1.5v - 1.0 3.0 a1 operating voltage vdd 0.8 - 6.0 v 2 output current ioutn vdd=0.8v, vds=0.5v 0.02 0.1 - ma 3 delay time tphl 2.0 ms 5 temperature characteristics of vdetn remarks ) test circuit no. 2 - top=-30 +80 - -0.27 - hysteresis width vhys mv/ - v vdetn top elm97 1 0nba elm97 1 0nba elm97 1 0nba elm97 1 0nba (top=25 ) parameter symbol conditions min. typ. max. units remarks detection voltage vdetn 0.975 1.000 1.025 v 2 vdetn vdetn 0.02 0.08 current consumption iss vdd=1.5v - 1.0 3.0 a1 operating voltage vdd 0.8 - 6.0 v 2 output current ioutn vdd=0.8v, vds=0.5v 0.02 0.1 - ma 3 delay time tphl 2.0 ms 5 temperature characteristic of vdetn remarks ) test circuit no. v2 - hysteresis width vhys vdetn top -mv/ - top=-30 +80 - -0.30 elm97 11 nba elm97 11 nba elm97 11 nba elm97 11 nba (top=25 ) parameter symbol conditions min. typ. max. units remarks detection voltage vdetn 1.073 1.100 1.127 v 2 vdetn vdetn 0.02 0.08 current consumption iss vdd=1.5v - 1.0 3.0 a1 operating voltage vdd 0.8 - 6.0 v 2 output current ioutn vdd=0.8v, vds=0.5v 0.02 0.1 - ma 3 delay time tphl 2.0 ms 5 temperature characteristic of vdetn remarks ) test circuit no. v2 hysteresis width - vhys vdetn top mv/ - top=-30 +80 --0.33- electrical characteristics
152 voltage detector elm97xxxxa elm9722caa elm9722caa elm9722caa elm9722caa (top=25 ) parameter symbol conditions min. typ. max. units remarks detection voltage vdetn 2.145 2.200 2.255 v 2 vdetn vdetn 0.02 0.08 current consumption iss vdd=3.0v - 1.5 4.5 a1 operating voltage vdd 0.8 - 6.0 v 2 ioutn vdd=1.5v, vds=0.5v 1.0 2.0 - ma 3 ioutp vdd=4.5v, vds=2.1v 0.5 1.5 - ma 4 delay time tphl 0.1 ms 5 temperature characteristic of vdetn remarks ) test circuit no. vdetn top output current hysteresis width vhys - v2 mv/ - top=-30 +80 - -0.22 - elm9724caa elm9724caa elm9724caa elm9724caa (top=25 ) parameter symbol conditions min. typ. max. units remarks detection voltage vdetn 2.340 2.400 2.460 v 2 vdetn vdetn 0.02 0.08 current consumption iss vdd=3.0v - 1.5 4.5 a1 operating voltage vdd 0.8 - 6.0 v 2 ioutn vdd=1.5v, vds=0.5v 1.0 2.0 - ma 3 ioutp vdd=4.5v, vds=2.1v 0.5 1.5 - ma 4 delay time tphl 0.1 ms 5 temperature characteristic of vdetn remarks ) test circuit no. v2 - hysteresis width vhys -mv/ - output current top=-30 +80 --0.24 vdetn top elm9725caa elm9725caa elm9725caa elm9725caa (top=25 ) parameter symbol conditions min. typ. max. units remarks detection voltage vdetn 2.438 2.500 2.562 v 2 vdetn - vdetn 0.02 0.08 current consumption iss vdd=3.0v - 1.5 4.5 a1 operating voltage vdd 0.8 - 6.0 v 2 ioutn vdd=1.5v, vds=0.5v 1.0 2.0 - ma 3 ioutp vdd=4.5v, vds=2.1v 0.5 1.5 - ma 4 delay time tphl 0.1 ms 5 temperature characteristic of vdetn remarks ) test circuit no. -0.25 - hysteresis width vhys top=-30 +80 - output current vdetn top mv/ - v2
153 voltage detector elm97xxxxa elm9727caa elm9727caa elm9727caa elm9727caa (top=25 ) parameter symbol conditions min. typ. max. units remarks detection voltage vdetn 2.633 2.700 2.767 v 2 vdetn vdetn 0.02 0.08 current consumption iss vdd=4.5v - 1.5 4.5 a1 operating voltage vdd 0.8 - 6.0 v 2 ioutn vdd=1.5v, vds=0.5v 1.0 2.0 - ma 3 ioutp vdd=4.5v, vds=2.1v 0.5 1.5 - ma 4 delay time tphl 0.1 ms 5 temperature characteristic of vdetn remarks ) test circuit no. vdetn top hysteresis width vhys v output current 2 - top=-30 +80 --0.27-mv/ - ELM9730CAA ELM9730CAA ELM9730CAA ELM9730CAA (top=25 ) parameter symbol conditions min. typ. max. units remarks detection voltage vdetn 2.925 3.000 3.075 v 2 vdetn vdetn 0.02 0.08 current consumption iss vdd=4.5v - 1.5 4.5 a1 operating voltage vdd 0.8 - 6.0 v 2 ioutn vdd=1.5v, vds=0.5v 1.0 2.0 - ma 3 ioutp vdd=4.5v, vds=2.1v 0.5 1.5 - ma 4 delay time tphl 0.1 ms 5 temperature characteristic of vdetn remarks ) test circuit no. vdetn top 2 - top=-30 +80 -0.30 - - mv/ - hysteresis width vhys v output current elm9732caa elm9732caa elm9732caa elm9732caa (top=25 ) parameter symbol conditions min. typ. max. units remarks detection voltage vdetn 3.120 3.200 3.280 v 2 vdetn vdetn 0.02 0.08 current consumption iss vdd=4.5v - 1.5 4.5 a1 operating voltage vdd 0.8 - 6.0 v 2 ioutn vdd=1.5v, vds=0.5v 1.0 2.0 - ma 3 ioutp vdd=4.5v, vds=2.1v 0.5 1.5 - ma 4 delay time tphl 0.1 ms 5 temperature characteristic of vdetn remarks ) test circuit no. vdetn top v2 - top=-30 +80 - -0.32 - mv/ - hysteresis width vhys output current
154 voltage detector elm97xxxxa elm9734caa elm9734caa elm9734caa elm9734caa (top=25 ) parameter symbol conditions min. typ. max. units remarks detection voltage vdetn 3.315 3.400 3.485 v 2 vdetn vdetn 0.02 0.08 current consumption iss vdd=4.5v - 1.5 4.5 a1 operating voltage vdd 0.8 - 6.0 v 2 ioutn vdd=1.5v, vds=0.5v 1.0 2.0 - ma 3 ioutp vdd=4.5v, vds=2.1v 0.5 1.5 - ma 4 delay time tphl 0.1 ms 5 temperature characteristic of vdetn remarks ) test circuit no. - vdetn top output current - 2 hysteresis width - top=-30 +80 - vhys v -0.34 mv/ elm9745caa elm9745caa elm9745caa elm9745caa (top=25 ) parameter symbol conditions min. typ. max. units remarks detection voltage vdetn 4.388 4.500 4.612 v 2 vdetn vdetn 0.02 0.08 current consumption iss vdd=6.0v - 1.5 4.5 a1 operating voltage vdd 0.8 - 6.0 v 2 ioutn vdd=1.5v, vds=0.5v 1.0 2.0 - ma 3 ioutp vdd=6.0v, vds=2.1v 0.5 2.0 - ma 4 delay time tphl 0.1 ms 5 temperature characteristic of vdetn remarks ) test circuit no. vdetn top output current hysteresis width vhys - v2 top=-30 +80 --0.45- - mv/ elm9748caa elm9748caa elm9748caa elm9748caa (top=25 ) parameter symbol conditions min. typ. max. units remarks detection voltage vdetn 4.680 4.800 4.920 v 2 vdetn vdetn 0.02 0.08 current consumption iss vdd=6.0v - 1.5 4.5 a1 operating voltage vdd 0.8 - 6.0 v 2 ioutn vdd=1.5v, vds=0.5v 1.0 2.0 - ma 3 ioutp vdd=6.0v, vds=2.1v 0.5 2.0 - ma 4 delay time tphl 0.1 ms 5 temperature characteristic of vdetn remarks ) test circuit no. 2 - top=-30 +80 -- hysteresis width vhys v -0.48 - mv/ output current vdetn top
155 typical characteristics elm97 11 nxa voltage detector elm97xxxxa 0.2 0.4 0.6 0.8 0.2 0.4 0.6 0.8 1 0 vds (v) iout (ma) iout - vds vdd=1.0v vdd=0.8v 1 2 3 1 2 3 4 0 vdd (v) iss ( a) iss - vdd 80 25 -30 0.6 0.8 1 1.2 1.4 0 0.5 1 1.5 2 vdd (v) iout (ma) iout - vdd -30 25 80 1 2 3 1 2 3 4 0 vdd (v) vout (v) vout - vdd -30 25 80 (3v pullup 1m ) -20 0 20 40 60 80 1.1 1.2 top ( ) vdet (v) vdet - top vdetn vdetp 0.001 0.01 0.1 1 0.1 1 10 100 cl ( f) tphl,tplh (ms) tphl,tplh - vdd tphl tplh
156 test circuits 1 . current consumption 2. detection voltage * r= 1 m elm97 series elm97 series elm97 elm97 series series elm97 series 3. output current (n-ch) 4. output current (p-ch) 5. delay time input pulse * r= 1 m r is unnecessary for cmos output products. a a a v v v v v p.g. 3 or 6v 0.8v vss vss vss vss vss vss vdd vdd vdd vdd vdd vdd vdd vdd vdd out out vdetn 3v r* out vds vds out out r* cl 3v voltage detector elm97xxxxa
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