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? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE302 ??????????????????????? technology low voltage detector with built-in delay circuit ver 1.2 1 ? description ACE302 is a series of high precision voltage detector with ultra low current consumption (500na typ. at vdd=3.0v) and a built-in delay circuit. it can work at ve ry low voltage, which makes it perfect for system reset. ACE302 is composed of high precision voltage refer ence, comparator, delay circuit, output driver and resistor array. internally preset detect voltage has a low temperature drift and requires no external trimming. two type of output, cmos and n-channel open-drain are available. ACE302 is available in sot-23-3 which is pb free. features ? high-precision detection voltage 2% ? detection voltage 0.9v~6.0v (in 0.1v steps) ? built-in power on reset delay time circuit::refer to selection guide ? operating voltage range 0.7v~10v ? ultra-low current consumption 500na typ. (at vdd 3.0v) ? two output forms cmos and n-channel open-drain (active low) application ? power monitor for portable equipment such as pda,dsc,mobile phone,notebook,mp3 ? cpu and logic circuit reset ? battery checker ? battery back-up circuit ? power failure detector absolute maximum ratings parameter symbol max unit input voltage -0.3~12 v output voltage -0.3~12 v output current 70 ma power dissipation 150 mw a mbient temperature -40~70 storage temperature -40~125
? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE302 ??????????????????????? technology low voltage detector with built-in delay circuit ver 1.2 2 packaging type sot-23-3 3 1 2 ordering information selection guide ACE302 x xxx x xx + h recommended work conditions item min typ. max unit input voltage (vin) 0.7 10 v ambient temperature (t j ) -40 25 70 pin no symbol description 1 v ss gnd pin 2 v out voltage detection output pin 3 v dd voltage input pin delay time: a:50ms / b:100ms / c:150ms / d:200ms / e:250ms / f:300ms / g:400ms detector voltage: 090?0.9v / 100?1.0v / 263?2.63v / 300?3.0v / 465?4.65v?..600?6.0v (in 0.1v step) ? pb - free halogen - free output type: n: nch c: cmos package type bm: sot-23-3
? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE302 ??????????????????????? technology low voltage detector with built-in delay circuit ver 1.2 3 block diagram n channel open-drain cmos output electrical characteristics ACE302n090dbm+ (0.9v) (topt=25 , unless otherwise specified) reference data symbol parameter conditions min. typ. max. unit -v det detector threshold 0.882 0.9 0.918 v i ss current consumption v dd =2.9v 1 1.5 ua v ddh maximum operating voltage 10 v v ddl minimum operating voltage 0.5 v nch v ds =0.05v v dd =0.7v v ds =0.50v v dd =0.8v 0.01 0.05 0.05 0.50 ma i out output current pch v ds =-2.1v v dd =4.50v 1.0 2.0 ma ACE302n270dbm+ (2.7v) (topt=25 , unless otherwise specified) reference data symbol parameter conditions min. typ. max. unit -v det detector threshold 2.646 2.7 2.754 v i ss current consumption v dd =4.7v 0.5 1 ua v ddh maximum operating voltage 10 v v ddl minimum operating voltage 0.5 v nch v ds =0.05v v dd =0.7v 0.01 0.05 ma i out output current pch v ds =-2.1v v dd =4.50v 1.0 2.0 ma
? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE302 ??????????????????????? technology low voltage detector with built-in delay circuit ver 1.2 4 ACE302n300dbm+ (3.0v) (topt=25 , unless otherwise specified) reference data symbol parameter conditions min. typ. max. unit -v det detector threshold 2.94 3.0 3.06 v i ss current consumption v dd =5.0v 0.5 1 ua v ddh maximum operating voltage 10 v v ddl minimum operating voltage 0.5 v nch v ds =0.05v v dd =0.7v 0.01 0.05 ma i out output current pch v ds =-2.1v v dd =4.50v 1.0 2.0 ma ACE302n340dbm+ (3.4v) (topt=25 , unless otherwise specified) reference data symbol parameter conditions min. typ. max. unit -v det detector threshold 3.332 3.4 3.468 v i ss current consumption v dd =5.0v 0.5 1 ua v ddh maximum operating voltage 10 v v ddl minimum operating voltage 0.5 v nch v ds =0.05v v dd =0.7v 0.01 0.05 ma i out output current pch v ds =-2.1v v dd =4.50v 1.0 2.0 ma ACE302n440dbm+ (4.4v) (topt=25 , unless otherwise specified) reference data symbol parameter conditions min. typ. max. unit -v det detector threshold 4.312 4.4 4.488 v i ss current consumption v dd =6.4v 0.5 1 ua v ddh maximum operating voltage 10 v v ddl minimum operating voltage 0.5 v nch v ds =0.05v v dd =0.7v 0.01 0.05 ma i out output current pch v ds =-2.1v v dd =8.0v 1.5 3.0 ma
? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE302 ??????????????????????? technology low voltage detector with built-in delay circuit ver 1.2 5 electrical characteristics by detector threshold detector threshold supply current1 supply current2 -vdet[v] iss1[ua] iss2[ua] part number min typ max condition typ max condition typ max ACE302x090xxx+ 0.882 0.900 0.918 ACE302x100xxx+ 0.980 1.000 1.020 ACE302x110xxx+ 1.078 1.100 1.122 ACE302x120xxx+ 1.176 1.200 1.224 ACE302x130xxx+ 1.274 1.300 1.326 ACE302x140xxx+ 1.372 1.400 1.428 ACE302x150xxx+ 1.470 1.500 1.530 ACE302x160xxx+ 1.568 1.600 1.632 ACE302x170xxx+ 1.666 1.700 1.734 ACE302x180xxx+ 1.764 1.800 1.836 ACE302x190xxx+ 1.862 1.900 1.938 1.0 1.5 ACE302x200xxx+ 1.960 2.000 2.040 ACE302x210xxx+ 2.058 2.100 2.142 ACE302x220xxx+ 2.156 2.200 2.244 ACE302x230xxx+ 2.254 2.300 2.346 ACE302x240xxx+ 2.352 2.400 2.448 ACE302x250xxx+ 2.450 2.500 2.550 ACE302x260xxx+ 2.548 2.600 2.652 ACE302x270xxx+ 2.646 2.700 2.754 ACE302x280xxx+ 2.744 2.800 2.856 ACE302x290xxx+ 2.842 2.900 2.958 ACE302x300xxx+ 2.940 3.000 3.060 ACE302x310xxx+ 3.038 3.100 3.162 ACE302x320xxx+ 3.136 3.200 3.264 ACE302x330xxx+ 3.234 3.300 3.366 ACE302x340xxx+ 3.332 3.400 3.468 ACE302x350xxx+ 3.430 3.500 3.570 ACE302x360xxx+ 3.528 3.600 3.672 ACE302x370xxx+ 3.626 3.700 3.774 ACE302x380xxx+ 3.724 3.800 3.876 ACE302x390xxx+ 3.822 3.900 3.978 ACE302x400xxx+ 3.920 4.000 4.080 ACE302x410xxx+ 4.018 4.100 4.182 ACE302x420xxx+ 4.116 4.200 4.284 vdd= (-vdet) +0.1v 0.5 1.0 vdd= (-vdet) +2v 0.5 1.0
? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE302 ??????????????????????? technology low voltage detector with built-in delay circuit ver 1.2 6 ACE302x430xxx+ 4.214 4.300 4.386 ACE302x440xxx+ 4.312 4.400 4.488 ACE302x450xxx+ 4.410 4.500 4.590 ACE302x460xxx+ 4.508 4.600 4.692 ACE302x470xxx+ 4.606 4.700 4.794 ACE302x480xxx+ 4.704 4.800 4.896 ACE302x490xxx+ 4.802 4.900 4.998 ACE302x500xxx+ 4.900 5.000 5.100 ACE302x510xxx+ 4.998 5.100 5.202 ACE302x520xxx+ 5.096 5.200 5.304 ACE302x530xxx+ 5.194 5.300 5.406 ACE302x540xxx+ 5.292 5.400 5.508 ACE302x550xxx+ 5.390 5.500 5.610 ACE302x560xxx+ 5.488 5.600 5.712 ACE302x570xxx+ 5.586 5.700 5.814 ACE302x580xxx+ 5.684 5.800 5.916 ACE302x590xxx+ 5.782 5.900 6.018 ACE302x600xxx+ 5.880 6.000 6.120 output current1 output current2 minimum operating voltage detector threshold temperature coefficient iout1[ma] iout2[ma] vddl[v] -vdet/ tppm/c condition min. typ. condition min. typ. typ. max. condition typ. v dd =0.85v 0.1 0.5 v dd =1.0v 0.2 1.0 nch, v ds =0.05v,v dd =0.7v 0.01 0.05 nch,vds=0.5v v dd =1.5v 1.0 2.0 0.5 0.7 -40 topt 85 100 electrical characteristics by output delay time output delay time part number test condition min typ max unit ACE302xxxxaxx+ 45 50 55 ACE302xxxxbxx+ ? 90 100 110 ACE302xxxxcxx+ ? 135 150 165 ACE302xxxxdxx+ ? 180 200 220 ACE302xxxxexx+ ? 225 250 275 ACE302xxxxfxx+ ? 270 300 330 ACE302xxxxgxx+ ? v dd =1.0v to vdet+1.0v 360 400 440 ms
? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE302 ??????????????????????? technology low voltage detector with built-in delay circuit ver 1.2 7 function description high precision low temperature co-efficiency reference voltage is applied to the negative input of a comparator. input voltage, divided by resistor array of ra and rb, is applied to the positive input of the comparator. output of the comparator passes a delay circuit and a series of buffer to drive the output cmos pair. v det =v ref *(1+ra/rb) no operation status output status i v dd >v det output voltage is equal to the supply voltage ii v dd drops below vdet output voltage equals to gnd level iii v dd drops further below v ddl output voltage is undefined iv v dd rises above v ddl output voltage equals to gnd level v v dd rises above v det output voltage equals to supply voltage after tdelay
? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE302 ??????????????????????? technology low voltage detector with built-in delay circuit ver 1.2 8 typical circuits (1) supply current test circuit (2) detector threshold test circuit ACE302 ACE302 (3) nchply current test circuit (2) detector threshold test circuit ac302 ACE302 typical performance characteristics 1. supply current vs. input voltage detector threshold=0.9v detector threshold=2.7v input voltage (v) input voltage (v)
? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE302 ??????????????????????? technology low voltage detector with built-in delay circuit ver 1.2 9 detector threshold=3.0v detector threshold=4.4v input voltage (v) input voltage (v) 2. detector threshold vs. temperature detector threshold=0.9v detector threshold=2.7v temperature ( ) temperature ( ) detector threshold=3.0v detector threshold=4.4v temperature ( ) temperature ( )
? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE302 ??????????????????????? technology low voltage detector with built-in delay circuit ver 1.2 10 3. nch driver output current vs. v ds ACE302x090xxx+ ACE302x270xxx+ vds (v) vds (v) ACE302x300xxx+ ACE302x440xxx+ vds (v) vds (v) 4. nch driver output current vs. input voltage detector threshold=2.7v detector threshold=3.0v input voltage vin (v) input voltage vin (v)
? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE302 ??????????????????????? technology low voltage detector with built-in delay circuit ver 1.2 11 5. pch driver output current vs. input current detector threshold=0.9v detector threshold=2.7v input voltage vin (v) input voltage vin (v) detector threshold=4.4v input voltage vin (v) typical applications ACE302 note: 1. r0 is unnecessary for cmos output products. 2. the value of r0 need to be selected in different application, typical value is 470k ?
? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE302 ??????????????????????? technology low voltage detector with built-in delay circuit ver 1.2 12 packing information sot-23-3
? ??????????????????????????????????????????????????????????????? ????????????????????????? ACE302 ??????????????????????? technology low voltage detector with built-in delay circuit ver 1.2 13 notes ace does not assume any responsibility for use as cr itical components in life support devices or systems without the express written approval of the president and general counsel of ace electronics co., ltd. as sued herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and shoes failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. ace technology co., ltd. http://www.ace-ele.com/

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