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1 mar. 2007 rev. 1. 5 bcd semiconductor manufacturing limited voltage detector az70xx preliminary datasheet general description the az70xx series ics are under voltage detectors with a built in voltage threshold and low power con- sumption. the az70xx are specifically designed to accurately monitor power supplies. the az70xx use a precision on-chip voltage refer- ence and a comparator to measure the input operating voltage. these ics can accurately reset the system after detecting voltage at the time of switching power on and instantaneous power off in various cpu systems and other logic systems. the detect voltage thresholds are 2.3v/2.5v/2.7v/2.9v/3.1v/3.3v/4.2v/4.5vfor az7023/25/27/29/31/33/42/45 respectively. built in hysteresis helps to prevent er ratic operation in the pres- ence of noise. the az70xx series are availa ble in 2 standard pack- ages: to-92 (bulk or ammo packing) and sot-89-3. features low current consumption: i ccl =300 a typical i cch =30 a typical low minimum operatin g voltage for output resetting: 0.8v typical built in hysteresis voltage: 50mv typical open collector output extended temperature range: -40 to 85 o c applications low battery voltage detector power fail indicator processor reset generator battery backup control home electric appliances to-92 sot-89-3 figure 1. package types of az70xx to-92 ammo packing
2 mar. 2007 rev. 1. 5 bcd semiconductor manufacturing limited voltage detector az70xx preliminary datasheet figure 2. pin configuration of az70xx (top view) z package (to-92) r package (sot-89-3) figure 3. functional block diagram of az70xx functional block diagram v cc gnd out 1 2 3 out gnd v cc + - v cc out gnd 1 2 3 pin configuration z package (to-92 ammo packing) out gnd v cc 1 2 3
3 mar. 2007 rev. 1. 5 bcd semiconductor manufacturing limited voltage detector az70xx preliminary datasheet ordering information package temperature range detect voltage part number marking id packing type tin lead lead free tin lead lead free to-92 -40 to 85 o c 2.3v az7023z az7023z-e1 az7023z az7023z-e1 bulk az7023ztr az7023ztr-e1 az7023z az7023z-e1 ammo 2.5v az7025z az7025z-e1 az7025z az7025z-e1 bulk az7025ztr az7025ztr-e1 az7025z az7025z-e1 ammo 2.7v az7027z az7027z-e1 az7027z az7027z-e1 bulk az7027ztr az7027ztr-e1 az7027z az7027z-e1 ammo 2.9v az7029z az7029z-e1 az7029z az7029z-e1 bulk az7029ztr az7029ztr-e1 az7029z az7029z-e1 ammo 3.1v az7031z az7031z-e1 az7031z az7031z-e1 bulk az7031ztr az7031ztr-e1 az7031z az7031z-e1 ammo 3.3v az7033z az7033z-e1 az7033z az7033z-e1 bulk az7033ztr az7033ztr-e1 az7033z az7033z-e1 ammo 4.2v az7042z az7042z-e1 az7042z az7042z-e1 bulk az7042ztr az7042ztr-e1 az7042z az7042z-e1 ammo 4.5v az7045z az7045z-e1 az7045z az7045z-e1 bulk az7045ztr az7045ztr-e1 az7045z az7045z-e1 ammo sot-89-3 -40 to 85 o c 2.3v az7023rtr az7023rtr-e1 7023r e723 tape & reel 2.5v az7025rtr az7025rtr-e1 7025r e725 tape & reel 2.7v az7027rtr az7027rtr-e1 7027r e727 tape & reel 2.9v az7029rtr az7029rtr-e1 7029r e729 tape & reel 3.1v az7031rtr az7031rtr-e1 7031r e731 tape & reel 3.3v az7033rtr az7033rtr-e1 7033r e733 tape & reel 4.2v az7042rtr az7042rtr-e1 7042r e742 tape & reel 4.5v az7045rtr az7045rtr-e1 7045r e745 tape & reel circuit type package z: to-92 e1: lead free blank: tin lead az70 - tr: tape and reel or ammo blank: bulk r: sot-89-3 detect voltage 23: 2.3v 27: 2.7v 29: 2.9v 33: 3.3v 42: 4.2v 45: 4.5v 25: 2.5v bcd semiconductor's pb-free products, as de signated with "e1" suffix in the part number, are rohs compliant. 31: 3.1v
4 mar. 2007 rev. 1. 5 bcd semiconductor manufacturing limited voltage detector az70xx preliminary datasheet note 1: stresses greater than those listed under "absolute maximum ratings" may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under"recommended operating conditi ons" is not implied. exposure to "absolute maxi- mum ratings" for extended periods may affect device reliability. recommended operating conditions parameter symbol value unit supply voltage v cc -0.3 to 20 v power dissipation (package limitations, t a =25 o c) p d to-92 package: 400 mw sot-89-3 package: 500 operating junction temperature t j 150 o c storage temperature range t stg -65 to 150 o c parameter symbol min max unit supply voltage v cc 18 v operating temperature range t a -40 85 o c absolute maximum ratings (note 1)
5 mar. 2007 rev. 1. 5 bcd semiconductor manufacturing limited voltage detector az70xx preliminary datasheet parameter symbol conditions min typ max unit detect vo l t a g e v det r l =200 ? (note 2) v ol ? 0.4v az7023r/z 2.15 2.3 2.45 v az7025r/z 2.35 2.5 2.65 az7027r/z 2.55 2.7 2.85 az7029r/z 2.75 2.9 3.05 az7031r/z 2.95 3.1 3.25 az7033r/z 3.15 3.3 3.45 az7042r/z 4.05 4.2 4.35 az7045r/z 4.35 4.5 4.65 low-level output voltage v ol v cc =v det (min)-0.05v r l =200 ? (note 2) 0.4 v output leakage current i oh v cc =15v 0.1 a hysteresis voltage v hys r l =200 ? (note 2) 30 50 100 mv detect voltage temperature coefficient ? v det /(v det ? ? t) r l =200 ? (note 2) 0.01 % / o c circuit current at on time i ccl v cc =v det (min)-0.05v 300 500 a circuit current at off time i cch v cc =5.25v 30 50 a minimum operating voltage v opr r l =200 ? (note 2) v ol ? 0.4v 0.8 v o l p transmission delay time tphl v cc changed from 5.25v to v det (min)-0.05v, r l =1.0k ? , c l =100p (note 3) 10 s o h p transmission delay time tplh v cc changed from v det (min)- 0.05v to 5.25v, r l =1.0k ? , c l =100p (note 3) 15 s output current at on time i ol v cc =v det (min)-0.05v t a =25 o c (note 4) 20 ma i ol ? v cc =v det (min)-0.05v t a =-40 to 85 o c (note 4) 16 electrical characteristics t a =25 o c, unless otherwise specified. note 2: see test circuit 1 and figure 12. note 3: see test circuit 2 and figure 12. note 4: see test circuit 3. adjusting the regulative power source until the reading value of voltage meter v is 0.4v, the reading value of curren t meter a is defined as "output current at on time".
6 mar. 2007 rev. 1. 5 bcd semiconductor manufacturing limited voltage detector az70xx preliminary datasheet figure 4. test circuit 1 figure 5. test circuit 2 electrical characteristics (continued) figure 5. test circuit 2 figure 6. test circuit 3 10 f + a v v det (min)-0.05v 1 3 2 v cc az7029 out gnd r l 10 f + a2 v2 a1 v1 1 3 2 v cc az7029 out gnd c l +5v r l 10 f + input pulse 1 3 2 v cc az7029 out gnd
7 mar. 2007 rev. 1. 5 bcd semiconductor manufacturing limited voltage detector az70xx preliminary datasheet figure 7. detect voltage vs. temperature figure 8. minimum operating voltage vs. temperature figure 9. output current at on ti me vs. temperature figure 10. low-le vel output voltage vs. temperature -40-20 0 20406080 400 500 600 700 800 900 1000 1100 1200 az7029 minimum operating voltage (mv) temperature ( o c) -40-20 0 20406080 10 20 30 40 50 60 70 output current at on time (ma) temperature ( o c) az7029 -40-20 0 20406080 0 25 50 75 100 az7029 low-level output voltage (mv) temperature ( o c) -40-20 0 20406080 2.75 2.80 2.85 2.90 2.95 v det- (v cc falling) v det+ (v cc rising) detect voltage (v) temperature ( o c) az7029 typical performance characteristics
8 mar. 2007 rev. 1. 5 bcd semiconductor manufacturing limited voltage detector az70xx preliminary datasheet figure 11. output voltage dynamic response when v cc increases and decreases time (s) figure 12. az70xx timing waveform (note 5) operating diagram typical performance ch aracteristics (continued) note 5: detect voltage: v det- release voltage: v det+ hysteresis voltage (v hys ): v det+ -v det- minimum operating voltage: v opr tplh tphl v cc v det- v out v det+ tphl tplh v hys v opr gnd
9 mar. 2007 rev. 1. 5 bcd semiconductor manufacturing limited voltage detector az70xx preliminary datasheet figure 13. low voltage indicator figure 14. cpu resetting circuit 1 3 2 v cc az70xx out gnd led v cc r1 220 v cc +5v r1 3.3k 1 3 2 v cc az70xx out gnd cpu v cc gnd reset c1 1 f + operating diagram (continued) typical applications figure 12 is a typical timing waveform for az70xx. in normal steady-state operation when v cc >v det- , the output will be in a logic high state and v out is dependent upon the voltage that the pull-up resistor connected to. here is some explanations for az70xx's operation. 1. when the input voltage v cc falls below v det- , the output will pull down to logic low after a delay time of tphl. in general, at rated output current and v cc , v out can be pulled down to a voltage as low as within 0.4v from gnd. (see the electrical characteristics section). the voltage level v det- means the detect voltage. 2. the output, v out , will stay valid until v cc falls below the minimum operating voltage, v opr (0.8v typical). below minimum operating voltage, the out- put is undefined. 3. during power-up, v out will remain undefined until v cc rises above v opr , at which time the output will become valid. v out will be in its active low state while v opr < v cc < v det+ (v det+ =v det- +v hys ). v det+ is the release voltage. v hys means the hystere- sis voltage and is the diff erence voltage between the v det+ and v det- . 4. when v cc rises above v det+ , the output will be in its inactive state. after a delay time of tplh, v out will be in its logic high state .
10 mar. 2007 rev. 1. 5 bcd semiconductor manufacturing limited voltage detector az70xx preliminary datasheet mechanical dimensions to-92 unit: mm(inch) 2.440(0.096) 2.640(0.104) 0.380(0.015) 0.550(0.022) ! 1.600(0.063) max 14.100(0.555) 14.500(0.571) 1.270(0.050) typ 3.300(0.130) 3.700(0.146) 4.300(0.169) 4.700(0.185) 1.100(0.043) 1.400(0.055) 4.400(0.173) 4.700(0.185) 3.430(0.135) min 0.360(0.014) 0.510(0.020) 0.000(0.000) 0.380(0.015)
11 mar. 2007 rev. 1. 5 bcd semiconductor manufacturing limited voltage detector az70xx preliminary datasheet mechanical dimens ions (continued) to-92 ammo packing unit: mm(inch) 12.400(0.488) 13.000(0.512) 4.400(0.173) 4.600(0.181) 1.000 (0.039) max 17.500(0.689) 19.000(0.748) 8.500(0.335) 9.500(0.374) 3.550(0.140) 4.150(0.163) 15.500(0.610) 16.500(0.650) 19.000(0.748) 21.000(0.827) 12.500(0.492) 12.900(0.508) 6.050(0.238) 6.650(0.262) 3.800(0.150) 4.200(0.165) 0.150(0.006) 0.250(0.010) 0.350(0.014) 0.450(0.018) 2.200(0.087) 2.800(0.110) 2.500(0.098) min 5.500(0.217) 6.500(0.256) 3.400(0.134) 3.600(0.142) 4.400(0.173) 4.600(0.181) 0.380(0.015) 0.550(0.022) 2.200(0.087) 2.800(0.110) 1.000(0.039) p 1.000(0.039) h
12 mar. 2007 rev. 1. 5 bcd semiconductor manufacturing limited voltage detector az70xx preliminary datasheet mechanical dimens ions (continued) sot-89-3 unit: mm(inch) 1.400(0.055)* 1.630(0.064) 4.400(0.173) 0.360(0.014) 0.440(0.017) 3.000(0.118) 0 . 9 0 0 ( 0 . 0 3 5 ) 2 . 3 0 0 ( 0 . 0 9 1 ) 3 . 9 5 0 ( 0 . 1 5 6 ) 1.400(0.055) 0.360(0.014) 1 0 3 1 0 r0.200(0.008) r0.150(0.006) 0 . 0 0 0 ( 0 . 0 0 0 ) 3 1.600(0.063) 0.440(0.017) 0.560(0.022) 2 . 6 0 0 ( 0 . 1 0 2 ) 0.520(0.020) 4.600(0.181) 1.830(0.072) 1 . 2 0 0 ( 0 . 0 4 7 ) 4 . 2 5 0 ( 0 . 1 6 7 ) 0 . 0 7 6 ( 0 . 0 0 3 ) 0.360(0.014) 0.480(0.019)
important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing limited 800, yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 bcd semiconductor manufacturing limited main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd. shenzhen office advanced analog circuits (shanghai) corporation shenzhen office room e, 5f, noble center, no.1006, 3rd fuzhong road, futian district, shenzhen 518026, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corporation 30920 huntwood ave. hayward, ca 94544, u.s.a tel : +1-510-324-2988 fax: +1-510-324-2788 - ic design group advanced analog circuits (shanghai) corporation 8f, zone b, 900, yi shan road, shanghai 200233, china tel: +86-21-6495 9539, fax: +86-21-6485 9673 bcd semiconductor manufacturing limited http://www.bcdsemi.com

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