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voltage detector az70xx az70xx preliminary datasheet 1 jul. 2005 rev. 1. 3 bcd semiconductor manufacturing limited 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 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
voltage detector az70xx az70xx preliminary datasheet 2 jul. 2005 rev. 1. 3 bcd semiconductor manufacturing limited 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
voltage detector az70xx az70xx preliminary datasheet 3 jul. 2005 rev. 1. 3 bcd semiconductor manufacturing limited ordering information package temperature range detector 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
az70xx preliminary datasheet 4 jul. 2005 rev. 1. 3 bcd semiconductor manufacturing limited voltage detector az70xx 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 min max unit supply voltage v cc -0.3 18 v power dissipation (package limitations) p d to-92 package: 500 mw sot-89-3 package: 400 storage temperature range t stg -65 150 o c esd (machine model) esd 500 v esd (human body mode) esd 5000 v parameter symbol min max unit supply voltage v cc 15 v operating temperature range t opr -40 85 o c absolute maximum ratings (note 1)
az70xx preliminary datasheet 5 jul. 2005 rev. 1. 3 bcd semiconductor manufacturing limited voltage detector az70xx electrical characteristics operating conditions: t a =25 o c unless otherwise specified. parameter symbol conditions min typ max unit detecting voltage v s 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 s (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 s /(v s ? ? t) r l =200 ? (note 2) 0.01 % / o c circuit current at on time i ccl v cc =v s (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 s (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 s (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 s (min)-0.05v t a =25 o c (note 4) 20 ma i ol ? v cc =v s (min)-0.05v t a =-40 to 85 o c (note 4) 16 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".
voltage detector az70xx az70xx preliminary datasheet 6 jul. 2005 rev. 1. 3 bcd semiconductor manufacturing limited 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 s (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
az70xx preliminary datasheet 7 jul. 2005 rev. 1. 3 bcd semiconductor manufacturing limited voltage detector az70xx figure 7. detecting voltage vs. temperature figure 8. minimum operating voltage vs. temperature figure 9. output current at on time vs. temperature f igure 10. low-level 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 s -v hys (v cc falling) v s (v cc rising) detecting voltage (v) temperature ( o c) az7029 typical performance characteristics
voltage detector az70xx az70xx preliminary datasheet 8 jul. 2005 rev. 1. 3 bcd semiconductor manufacturing limited figure 11. output voltage dynamic response when v cc increases and decreases time (s) figure 12. az70xx timing waveform operating diagram v cc v out tplh tplh tphl v s v s -v hys typical performance ch aracteristics (continued)
az70xx preliminary datasheet 9 jul. 2005 rev. 1. 3 bcd semiconductor manufacturing limited voltage detector az70xx 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 + figure 12 is a typical timing waveform for az70xx during power-up and temporary power-down period. here is some explanati ons for az70xx's operation. 1. during power-up period, v out will remain undefined until v cc rises above v opr (typically 0.8v). after that moment, the output will become valid and will be at its logic low state while v opr v s , the v out will be at its logic high state. in general, v out is dependent upon the voltage that the pull up resistor connected to. 3. during power-down, after a delay time of tphl from the moment v cc v cc >v opr for power-down operating. 5. after v cc falls below v opr , the output is undefined. operating diagram (continued) typical applications
voltage detector az70xx az70xx preliminary datasheet 10 jul. 2005 rev. 1. 3 bcd semiconductor manufacturing limited to-92 mechanical dimensions 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)
az70xx preliminary datasheet 11 jul. 2005 rev. 1. 3 bcd semiconductor manufacturing limited voltage detector az70xx 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 ) 0.480(0.019) 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)
8f, b zone, 900 yi shan road, shanghai 200233, prc tel: +86-21-6495 9539, fax: +86-21- 6485 9673 bcd semiconductor (tai wan) company limited 4f, 298-1 rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656-2808, fax: +886-2-2 656-2806 important notice bcd semiconductor manufacturing limited reserves the right to make changes without further notice to any pro- ducts or specifications herein. bcd se miconductor manufacturing limited does not assume any responsibility for use of any its products for any particular purpose, nor does bcd semiconductor manufacturing limited assume any liability arising out of the application or use of any its products or circuits. bcd semiconductor manufacturing limi- ted does not convey any license under its patent rights or other rights nor the rights of others. http://www.bcdsemi.com bcd semiconductor corporation 3170 de la cruz blvd, suite # 105 santa clara, ca 95054-2411, u.s.a tel: +1-408-988 6388, fax: +1-408-988 63 86 shanghai sim-bcd semiconduc tor manufacturing co., ltd. 800 yi shan road, shanghai 200233, prc tel: +86-21-6485 1491, fax : +86-21-5450 0008 advanced analog circuits (shanghai) corporation

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