? semiconductor components industries, llc, 2007 january, 2007 ? rev. 1 1 publication order number: max803/d max803 series, ncp803 series very low supply current 3?pin microprocessor reset monitor the max803/ncp803 is a cost?effective system supervisor circuit designed to monitor v cc in digital systems and provide a reset signal to the host processor when necessary. no external components are required. the reset output is driven active within 10 sec of v cc falling through the reset voltage threshold. reset is maintained active for a timeout period which is trimmed by the factory after v cc rises above the reset threshold. the max 803/ncp803 has an open drain active?low reset output. both devices are available in sot?23 and sc?70 packages. the max803/ncp803 is optimized to reject fast transient glitches on the v cc line. low supply current of 0.5 a (v cc = 3.2 v) make these devices suitable for battery powered applications. features ? precision v cc monitor for 1.5 v, 1.8 v, 2.5 v, 3.0 v, 3.3 v, and 5.0 v supplies ? precision monitoring voltages from 1.2 v to 4.9 v available in 100 mv steps ? four guaranteed minimum power?on reset pulse width available (1 ms, 20 ms, 100 ms, and 140 ms) ? reset output guaranteed to v cc = 1.0 v ? low supply current ? v cc transient immunity ? no external components ? wide operating temperature: ?40 c to 105 c ? pb?free packages are available typical applications ? computers ? embedded systems ? battery powered equipment ? critical microprocessor power supply monitoring v cc v cc v cc reset reset max803 ncp803 gnd gnd figure 1. typical application diagram p 0 0 r pull?up c = 100 nf sot?23 (to?236) case 318 pin configuration 3 1 2 v cc gnd reset sot?23/sc?70 (top view) marking diagram 3 2 12 1 3 http://onsemi.com xxx m xxx = specific device code m = date code = pb?free package xx m 1 sc?70 (sot?323) case 419 see general marking information in the device marking section on page 7 of this data sheet. device marking information see detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet. ordering information (note: microdot may be in either location)
max803 series, ncp803 series http://onsemi.com 2 pin description pin no. symbol description 1 2 reset reset output remains low while v cc is below the reset voltage threshold, and for a reset timeout period after v cc rises above reset threshold. absolute maximum ratings rating symbol value unit power supply voltage (v cc to gnd) v cc ?0.3 to 6.0 v reset output voltage (cmos) ?0.3 to (v cc + 0.3) v input current, v cc 20 ma output current, reset 20 ma dv/dt (v cc ) 100 v/ sec thermal resistance, junction?to?air (note 1) sot?23 sc?70 r ja 301 314 c/w operating junction temperature range t j ?40 to +105 c storage temperature range t stg ?65 to +150 c lead temperature (soldering, 10 seconds) t sol +260 c esd protection human body model (hbm): following specification jesd22?a114 machine model (mm): following specification jesd22?a115 2000 200 v latchup current maximum rating: following specification jesd78 class ii positive negative i latchup 200 200 ma stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect device reliability. 1. this based on a 35x35x1.6mm fr4 pcb with 10mm 2 of 1 oz copper traces under natural convention conditions and a single component characterization. 2. the maximum package power dissipation limit must not be exceeded. p d t j(max) t a r ja with t j(max) = 150 c
max803 series, ncp803 series http://onsemi.com 3 electrical characteristics t a = ?40 c to +105 c unless otherwise noted. typical values are at t a = +25 c. (note 3) characteristic symbol min typ max unit v cc range t a = 0 c to +70 c t a = ?40 c to +105 c 1.0 1.2 ? ? 5.5 5.5 v supply current v cc = 3.3 v t a = ?40 c to +85 c t a = 85 c to +105 c v cc = 5.5 v t a = ?40 c to +85 c t a = 85 c to +105 c i cc ? ? ? ? 0.5 ? 0.8 ? 1.2 2.0 1.8 2.5 a reset threshold (v in decreasing) (note 4) max803sq463/ncp803sn463 t a = +25 c t a = ?40 c to +85 c t a = +85 c to +105 c v th 4.56 4.51 4.40 4.63 ? ? 4.70 4.75 4.88 v max803sq438/ncp803sn438 t a = +25 c t a = ?40 c to +85 c t a = +85 c to +105 c 4.31 4.27 4.16 4.38 4.45 4.49 4.60 max803sq308/ncp803sn308 t a = +25 c t a = ?40 c to +85 c t a = +85 c to +105 c 3.04 3.00 2.92 3.08 ? ? 3.11 3.15 3.23 max803sq293/ncp803sn293 t a = +25 c t a = ?40 c to +85 c t a = +85 c to +105 c 2.89 2.85 2.78 2.93 ? ? 2.96 3.00 3.08 ncp803sn263 t a = +25 c t a = ?40 c to +85 c t a = +85 c to +105 c 2.59 2.55 2.50 2.63 ? ? 2.66 2.70 2.76 ncp803sn232 t a = +25 c t a = ?40 c to +85 c t a = +85 c to +105 c 2.29 2.26 2.20 2.32 ? ? 2.35 2.38 2.45 ncp803sn160 t a = +25 c t a = ?40 c to +85 c t a = +85 c to +105 c 1.58 1.56 1.52 1.60 ? ? 1.62 1.64 1.68 max803sn120, max803sq120 t a = +25 c t a = ?40 c to +85 c t a = +85 c to +105 c 1.18 1.17 1.14 1.20 ? ? 1.22 1.23 1.26 detector voltage threshold temperature coefficient ? 30 ? ppm/ c v cc to reset delay v cc = v th to (v th ? 100 mv) ? 10 ? sec reset active timeout period (note 5) max803sn(q)293d1 max803sn(q)293d2/max803sn(q)308d2 max803sn(q)293d3 max803sn(q)293 t rp 1.0 20 100 140 ? ? ? ? 3.3 66 330 460 msec reset output voltage low v cc = v th ? 0.2 v 1.6 v v th 2.0 v, i sink = 0.5 ma 2.1 v v th 4.0 v, i sink = 1.2 ma 4.1 v v th 4.9 v, i sink = 3.2 ma v ol ? ? 0.3 v reset leakage current v cc v th , reset de?asserted i leak ? ? 1 a 3. production testing done at t a = 25 c, over temperature limits guaranteed by design. 4. contact your on semiconductor sales representative for other threshold voltage options. 5. contact your on semiconductor sales representative for timeout options availability for other threshold voltage options.
max803 series, ncp803 series http://onsemi.com 4 ?40 c ?40 c typical operating characteristics 0.5 0.4 0.3 0.2 0.1 0 0.5 1.5 2.5 3.5 4.5 6.5 ?50 ?25 0 25 50 75 supply voltage (v) temperature ( c) figure 2. supply current vs. supply voltage 0.5 0.4 0.3 0.2 0.1 0 supply voltage (v) supply current ( a) supply current ( a) 0.6 0.7 85 c 25 c ?40 c 0.5 1.5 2.5 3.5 4.5 6.5 85 c 25 c v th = 4.63 v 0.3 0.2 0.1 0 0.5 1.5 2.5 3.5 4.5 6.5 supply voltage (v) 0.4 85 c 25 c supply current ( a) v th = 2.93 v normalized threshold voltage 0.994 0.995 0.996 0.997 0.998 0.999 1.000 1.002 100 125 v th = 1.2 v ?50 ?25 0 25 50 0 temperature ( c) supply current ( a) 0.1 0.2 0.3 0.4 0.5 75 100 v cc = 1.0 v v cc = 3.3 v v cc = 5.0 v v th = 4.63 v v th = 1.2 v 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 supply voltage (v) output voltage v cc (mv) 20 40 60 80 100 5.0 figure 3. supply current vs. supply voltage figure 4. supply current vs. supply voltage figure 5. normalized reset threshold voltage vs. temperature figure 6. supply current vs. temperature figure 7. output voltage low vs. supply voltage 5.5 5.5 5.5 1.001 4.0 4.5 85 c 25 c ?40 c v th = 4.63 v i sink = 500 a reset asserted
max803 series, ncp803 series http://onsemi.com 5 typical operating characteristics 75 50 25 0 ?50 ?25 0 25 50 125 temperature ( c) figure 8. power?down reset delay vs. temperature and overdrive (v th = 1.2 v) 300 240 180 120 60 0 temperature ( c) power?down reset delay ( sec) power?down reset delay ( sec) 100 125 ?50 ?25 0 25 50 125 1.1 0.9 0.8 0.7 ?50 ?25 0 25 50 100 temperature ( c) 1.3 normalized power?up reset timeout v od = v cc ?v th figure 9. power?down reset delay vs. temperature and overdrive (v th = 4.63 v) figure 10. normalized power?up reset vs. temperature 75 75 75 100 v od = 10 mv v od = 20 mv v od = 100 mv v od = 200 mv v od = v cc ?v th v od = 10 mv v od = 20 mv v od = 100 mv v od = 200 mv 1.0 1.2 100
max803 series, ncp803 series http://onsemi.com 6 applications information v cc transient rejection the max803/ncp803 series provides accurate v cc monitoring and reset timing during power?up, power?down, and brownout/sag conditions, and rejects negative?going transients (glitches) on the power supply line. figure 11 shows the maximum transient duration vs. maximum negative excursion (overdrive) for glitch rejection. any combination of duration and overdrive which lies under the curve will not generate a reset signal. combinations above the curve are detected as a brownout or power?down. typically, transient that goes 100 mv below the reset threshold and lasts 5.0 s or less will not cause a reset pulse. transient immunity can be improved by adding a capacitor in close proximity to the v cc pin of the max803. figure 11. maximum transient duration vs. overdrive for glitch rejection at 25 c duration v th overdrive v cc 10 250 200 110 60 maximum transient duration ( sec) 50 reset comparator overdrive (mv) 0 41 0 150 100 v th = 1.2 v 160 210 260 310 360 v th = 4.63 v reset signal integrity during power?down the max803/ncp803 reset output is valid to v cc = 1.0 v. below this voltage the output becomes an ?open circuit? and does not sink current. this means cmos logic inputs to the microprocessor will be floating at an undetermined voltage. most digital systems are completely shutdown well above this voltage. however, in situations where reset must be maintained valid to v cc = 0 v, since the ncp803/max803 has open?drain and active?low output, it typically uses a pullup resistor. with this device, reset will most likely not maintain an active condition, but will drift to a non?active level due to the pullup resistor and the reduced sinking capability of the open?drain device. therefore, this device is not recommended for applications where the reset pin is required to be valid down to v cc = 0 v. v cc v cc r1 100 k* max809 ncp803 gnd figure 12. reset signal integrity reset *assume high?z reset input to microprocessor max803 reset output allows use with two power supplies in numerous applications the pullup resistor place on the reset output is connected to the supply voltage monitored by the ic. nevertheless, a different supply voltage can also power this output and so level?shift from the monitored supply to reset the microprocessor. however, if the ncp803/max803?s supply goes blew 1 v, the reset output ability to sink current will decrease and the result is a high state on the pin even though the supply?s ic is under the threshold level. this occurs at a v cc level that depends on the r pullup value and the voltage which is connected. v cc v cc 2 microprocessor reset max803 ncp803 gnd gnd r pullup figure 13. max803 reset output with two supplies reset v cc v cc 1
max803 series, ncp803 series http://onsemi.com 7 ordering, marking and threshold information part number vth* (v) time out** (ms) description marking package shipping ? ncp803sn160t1 1.60 140?460 open drain reset scq sot23?3 3000 / tape & reel ncp803sn160t1g 1.60 140?460 scq sot23?3 (pb?free) ncp803sn232t1 2.32 140?460 sqr sot23?3 ncp803sn232t1g 2.32 140?460 sqr sot23?3 (pb?free) ncp803sn263t1 2.63 140?460 sqc sot23?3 ncp803sn263t1g 2.63 140?460 sqc sot23?3 (pb?free) ncp803sn293t1 2.93 140?460 sqd sot23?3 ncp803sn293t1g 2.93 140?460 sqd sot23?3 (pb?free) ncp803sn308t1 3.08 140?460 sqe sot23?3 ncp803sn308t1g 3.08 140?460 sqe sot23?3 (pb?free) ncp803sn438t1 4.38 140?460 sqf sot23?3 ncp803sn438t1g 4.38 140?460 sqf sot23?3 (pb?free) ncp803sn463t1 4.63 140?460 sqg sot23?3 ncp803sn463t1g 4.63 140?460 sqg sot23?3 (pb?free) ncp803sn120t1g 1.20 140?460 ssw sot23?3 (pb?free) ncp803sn293d1t1g 2.93 1?3.3 ssx sot23?3 (pb?free) ncp803sn293d2t1g 2.93 20?66 ssy sot23?3 (pb?free) ncp803sn293d3t1g 2.93 100?330 ssz sot23?3 (pb?free) max803sq120t1g 1.20 140?460 zv sc70?3 (pb?free) max803sq293t1g 2.93 140?460 zw sc70?3 (pb?free) max803sq308t1g 3.08 140?460 zx sc70?3 (pb?free) max803sq438t1g 4.38 140?460 zy sc70?3 (pb?free) MAX803SQ463T1G 4.63 140?460 zz sc70?3 (pb?free) max803sq293d1t1g 2.93 1?3.3 ya sc70?3 (pb?free) max803sq293d2t1g 2.93 20?66 yb sc70?3 (pb?free) max803sq308d2t1g 3.08 20?66 sy sc70?3 (pb?free) max803sq293d3t1g 2.93 100?330 yc sc70?3 (pb?free) ?for information on tape and reel specifications,including part orientation and tape sizes, please refer to our tape and reel p ackaging specifications brochure, brd8011/d. *contact your on semiconductor sales representative for other threshold voltage options. **contact your on semiconductor sales representative for timeout options availability for other threshold voltage options.
max803 series, ncp803 series http://onsemi.com 8 package dimensions sot?23 (to236) case 318?08 issue an *for additional information on our pb?free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. soldering footprint* mm inches scale 10:1 0.8 0.031 0.9 0.035 0.95 0.037 0.95 0.037 2.0 0.079 d a1 3 12 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. maximum lead thickness includes lead finish thickness. minimum lead thickness is the minimum thickness of base material. 4. 318?01 thru ?07 and ?09 obsolete, new standard 318?08. view c l 0.25 l1 e e e b a see view c dim a min nom max min millimeters 0.89 1.00 1.11 0.035 inches a1 0.01 0.06 0.10 0.001 b 0.37 0.44 0.50 0.015 c 0.09 0.13 0.18 0.003 d 2.80 2.90 3.04 0.110 e 1.20 1.30 1.40 0.047 e 1.78 1.90 2.04 0.070 l 0.10 0.20 0.30 0.004 0.040 0.044 0.002 0.004 0.018 0.020 0.005 0.007 0.114 0.120 0.051 0.055 0.075 0.081 0.008 0.012 nom max l1 h 2.10 2.40 2.64 0.083 0.094 0.104 h e 0.35 0.54 0.69 0.014 0.021 0.029 c
max803 series, ncp803 series http://onsemi.com 9 package dimensions sc?70 (sot?323) case 419?04 issue m a a2 d e1 b e e a1 c l 3 12 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 0.05 (0.002) 1.9 0.075 0.65 0.025 0.65 0.025 0.9 0.035 0.7 0.028 mm inches scale 10:1 *for additional information on our pb?free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. soldering footprint* h e dim a min nom max min millimeters 0.80 0.90 1.00 0.032 inches a1 0.00 0.05 0.10 0.000 a2 0.7 ref b 0.30 0.35 0.40 0.012 c 0.10 0.18 0.25 0.004 d 1.80 2.10 2.20 0.071 e 1.15 1.24 1.35 0.045 e 1.20 1.30 1.40 0.047 0.035 0.040 0.002 0.004 0.014 0.016 0.007 0.010 0.083 0.087 0.049 0.053 0.051 0.055 nom max l 2.00 2.10 2.40 0.079 0.083 0.095 h e e1 0.65 bsc 0.425 ref 0.028 ref 0.026 bsc 0.017 ref on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, r epresentation or guarantee regarding the suitability of its products for an y particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its of ficers, employees, subsidiaries, af filiates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. publication ordering information n. american technical support : 800?282?9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81?3?5773?3850 max803/d literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303?675?2175 or 800?344?3860 toll free usa/canada fax : 303?675?2176 or 800?344?3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your local sales representative
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