unisonic technologies co., ltd 81xx linear integrated circuit www.unisonic.com.tw 1 of 6 copyright ? 2010 unisonic technologies co., ltd qw-r119-001,na power reset ic ? description the function of utc 81xx is to accurately reset system after detecting the supply voltage at t he time of switching power on and instantaneous power off in various cpu and other logic systems. further, this ic, with its super low consumption current and high precision voltage detection capacity, utc 81xx is the most suited as a voltage check circuit for a number of products which use batteries. ? features *high precision voltage detection. (v ss 3% max) *low current consumption. (i cch =5a max. i ccl =5a max.) *low operating threshold voltage (0.65v typ.) *hysteresis voltage is provided as a detect voltage. (50mv typ.) *large output current at the time on (15ma typ.) *the detect voltage can be selected at your discretion at 0.1v step within the range of 1.9v to 4.6v by the following stipulation method. ? ordering information ordering number pin assignment lead free halogen free package 12345 packing 81xxl-ab3-d-r 81xxg-ab3-d-r sot-89 i g o - - tape reel 81xxl-ab3-e-r 81xxg-ab3-e-r sot-89 o i g - - tape reel 81xxl-ae3-2-r 81xxg-ae3-2-r sot-23 i o g - - tape reel 81xxl-ae3-3-r 81xxg-ae3-3-r sot-23 o g i - - tape reel 81xxl-ae3-5-r 81XXG-AE3-5-R sot-23 g o i - - tape reel 81xxl-af5-a-r 81xxg-af5-a-r sot-25 n n g o i tape reel 81xxl-af5-b-r 81xxg-af5-b-r sot-25 o i g n n tape reel 81xxl-t92-d-b 81xxg-t92-d-b to-92 i g o - - tape box 81xxl-t92-d-k 81xxg-t92-d-k to-92 i g o - - bulk 81xxl-t92-e-b 81xxg-t92-e-b to-92 o i g - - tape box 81xxl-t92-e-k 81xxg-t92-e-k to-92 o i g - - bulk note: pin assignment: i: v in o: v out g: gnd nc:n xx: detected voltage value
81xx linear integrated circuit unisonic technologies co., ltd 2 of 6 www.unisonic.com.tw qw-r119-001,na ? marking information package marking sot-23 1 2 3 date code pin code voltage code l: lead free l : halogen free sot-89 123 81xx date code voltage code l: lead free l : halogen free sot-25 5 4 3 21 date code pin code voltage code l: lead free l : halogen free to-92 ? block diagram op 1 v cc out gnd c 01 + - + - the pin2 this product is sub, so connect the pin to ground.
81xx linear integrated circuit unisonic technologies co., ltd 3 of 6 www.unisonic.com.tw qw-r119-001,na ? absolute maximum ratings parameter symbol ratings unit power supply voltage v cc -0.3~+10 v operating temperature t opr -20~+75 c storage temperature t stg -40~+125 c to-92 400 mw sot-89 500 mw sot-23 300 mw power dissipation sot-25 p d 350 mw note absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only and functional device oper ation is not implied. ? electrical characteristics (t a =25 c, the unit of resistance is ? unless otherwise indicated.) parameter symbol (note 1) test conditions min typ max unit utc 8150 4.850 5.000 5.150 utc 8146 4.462 4.600 4.738 utc 8145 4.365 4.500 4.635 utc 8144 4.268 4.400 4.532 utc 8143 4.171 4.300 4.429 utc 8142 4.074 4.200 4.326 utc 8141 3.977 4.100 4.223 utc 8140 3.880 4.000 4.120 utc 8139 3.783 3.900 4.017 utc 8138 3.686 3.800 3.914 utc 8137 3.589 3.700 3.811 utc 8136 3.492 3.600 3.708 utc 8135 3.395 3.500 3.605 utc 8134 3.298 3.400 3.502 utc 8133 3.201 3.300 3.399 utc 8132 3.104 3.200 3.296 utc 8131 3.007 3.100 3.193 utc 8130 2.910 3.000 3.090 utc 8129 2.813 2.900 2.987 utc 8128 2.716 2.800 2.884 utc 8127 2.619 2.700 2.781 utc 8126 2.522 2.600 2.678 utc 8125 2.425 2.500 2.575 utc 8124 2.328 2.400 2.472 utc 8123 2.231 2.300 2.369 utc 8122 2.134 2.200 2.266 utc 8121 2.037 2.100 2.163 utc 8120 1.940 2.000 2.060 utc 8119 1.843 1.900 1.957 detection voltage v ss 1 r l =470 ? v cc =h- > l v out =v cc utc 8118 1.746 1.800 1.854 v hysteresis voltage v ss 1 r l =470 ? , v cc =l > h- > l, v out =v cc 30 50 100 mv detection voltage temperature coefficient v ss / t 1 r l =470 ? , t a =-20~+75 c v out =v cc 0.01 %/ c low level output voltage v ol 1 v cc =v ss min.-0.05v, r l =470 ? 0.2 0.4 v output leakage current i oh 2 v cc =10v , v out =v cc 0.1 a
81xx linear integrated circuit unisonic technologies co., ltd 4 of 6 www.unisonic.com.tw qw-r119-001,na ? electrical characteristics(cont.) parameter symbol (note 1) test conditions min typ max unit circuit current at on time i ccl 3 v cc =v ss min.-0.05v, r l = 3 5 a circuit current at off time i cch 3 v cc =v ss typ./0.85, r l = 3 5 a ?h? transmission delay time tplh (note 2) 4 c l =100pf, r l =4.7k ? 20 60 s ?l? transmission delay time tphl (note 3) 4 c l =100pf, r l =4.7k ? 20 60 s operating threshold voltage v opl 1 r l =4.7k ? , v ol 0.4v 0.65 0.85 v output current at on time 1 i ol 1 2 r l =0, v cc =vs min.-0.05v, v out =0.4v 5 ma output current at on time 2 i ol 2 2 t a =-20~+75 c r l =0, v cc =v ss min.-0.15v v out =0.4v 3 ma note: 1 . 2. 3. measurement circuit tplh: v cc =(v ss typ. ?0.4v) - > (v ss typ. +0.4v) tphl: v cc =(v ss typ. +0.4v) - > (v ss typ. -0.4v)
81xx linear integrated circuit unisonic technologies co., ltd 5 of 6 www.unisonic.com.tw qw-r119-001,na ? measuring circuits v2 v1 v cc utc 81xx r l 10 f /10v + 1 gnd v cc v out input pulse utc 81xx 5.0v c l 4) + crt 10 f /10v r l = 4.7k 0.2uf gnd v cc v out note: 1.) a: dc ammeter v: dc voltmeter crt: oscilloscope 2.) input pulse vstyp. +0.4v vstyp. -0.4v 0v
81xx linear integrated circuit unisonic technologies co., ltd 6 of 6 www.unisonic.com.tw qw-r119-001,na utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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