? semiconductor components industries, llc, 2012 may, 2012 ? rev. 10 1 publication order number: cat853/d cat853, cat859, cat863, cat869 3-pin microprocessor power supply supervisors description the cat853, cat863, cat859, and cat869 are supervisory circuits that monitor power supplies in digital systems. these devices generate a reset signal, which is asserted while the power supply voltage is below a preset threshold level and for at least 140 ms after the power supply level has risen above that level. industry standard threshold levels are offered to support +3.3 v or 5.0 v systems. the cat859 and cat869 feature a reset push ? pull output (active low) for the two pinout options. the cat853 and cat863 feature an open drain reset output (active low). both require a pull ? up resistor on the reset output. fast transients on the power supply are ignored and the output is guaranteed to be in the correct state at v cc levels as low as 1.0 v. features ? precision monitoring of +3.3 v ( ? 5%, ? 10%), 5 v ( ? 10% power supplies) ? active low reset output ? reset valid down to v cc = 1.0 v ? 6 a power supply current ? power supply transient immunity ? industrial t emperature range: ? 40 c to +85 c ? sot ? 23 package ? these devices are pb ? free and are rohs compliant applications ? computers, servers, laptops and cable modems ? wireless communications ? embedded control systems ? white goods ? power meters ? intelligent instruments ? pdas and handheld equipment table 1. threshold suffix selector nominal threshold voltage threshold suffix designation 4.63 v l 4.38 v m 4.20 v f 4.00 v j 3.08 v t 2.93 v s 2.63 v r 2.40 v c 2.32 v z http://onsemi.com pin configuration v cc reset gnd 1 see detailed ordering and shipping information in the package dimensions section on page 8 of this data sheet. ordering information sot ? 23 tb suffix case 527ag 2 3 (top views) cat853, cat859 gnd reset v cc 1 2 3 cat863, cat869 1 xxxm xxx = specific device code m = date code = pb ? free package marking diagram (*note: microdot may be in either location)
cat853, cat859, cat863, cat869 http://onsemi.com 2 table 2. pin description pin name function reset active low reset. reset is asserted if v cc falls below the reset threshold and remains low for at least 140 ms after v cc rises above the reset threshold gnd ground v cc power supply voltage that is monitored cat853 cat863 gnd + ? digital delay voltage reference cat859 cat869 + ? digital delay voltage reference gnd figure 1. block diagrams v cc v cc tolerance bias v cc reset reset v cc v cc v cc tolerance bias table 3. absolute maximum ratings parameters ratings units any pin with respect to ground ? 0.3 to +6.0 v input current, v cc 20 ma output current, reset 20 ma rate of rise, v cc 100 v/ s continuous power dissipation derate 4 mw/ c above 70 c (sot23) 320 mw operating temperature range ? 40 to +85 c storage temperature range ? 65 to +105 c lead soldering temperature (10 sec) 300 c 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.
cat853, cat859, cat863, cat869 http://onsemi.com 3 table 4. electrical characteristics (v cc = full range, t a = ? 40 c to +85 c unless otherwise noted. typical values at t a = +25 c and v cc = 3.3 v for the c, s, t versions, v cc = 5 v for the m version.) symbol parameter conditions min typ (note 1 ) max units v cc range t a = 0 c to +70 c 1.0 5.5 v t a = ? 40 c to +85 c 1.2 5.5 i cc supply current t a = ? 40 c to +85 c v cc < 3.6 v, c, s, t 6 15 a v th reset threshold voltage l threshold t a = +25 c 4.56 4.63 4.70 v t a = ? 40 c to +85 c 4.50 4.75 m threshold t a = +25 c 4.31 4.38 4.45 t a = ? 40 c to +85 c 4.25 4.50 f threshold t a = +25 c 4.14 4.20 4.26 t a = ? 40 c to +85 c 4.08 4.31 j threshold t a = +25 c 3.93 4.00 4.06 t a = ? 40 c to +85 c 3.89 4.10 t threshold t a = +25 c 3.04 3.08 3.11 t a = ? 40 c to +85 c 3.00 3.15 s threshold t a = +25 c 2.89 2.93 2.96 t a = ? 40 c to +85 c 2.85 3.00 r threshold t a = +25 c 2.59 2.63 2.66 t a = ? 40 c to +85 c 2.55 2.70 c threshold t a = +25 c 2.35 2.40 2.45 t a = ? 40 c to +85 c 2.30 2.50 z threshold t a = +25 c 2.28 2.32 2.35 t a = ? 40 c to +85 c 2.25 2.38 reset threshold tempco 30 ppm/ c v cc to reset delay v cc = v th to (v th ? 100 mv) 20 s reset active timeout period t a = ? 40 c to +85 c 140 240 460 ms v ol reset output voltage low v cc = v th min, i sink = 1.2 ma 0.4 v v cc > 1.0 v, i sink = 50 a 0.3 v oh reset output voltage high v cc = v th max, i source = ? 500 a (for cat859/869 only) 0.8 v cc v 1. production testing done at t a = +25 c; limits over temperature guaranteed by design only.
cat853, cat859, cat863, cat869 http://onsemi.com 4 typical electrical operating characteristics (v cc = full range, t a = ? 40 c to +85 c unless otherwise noted. typical values at t a = +25 c and v cc = 3.3 v for the c, s, t versions, v cc = 5 v for the m version.) figure 2. power ? up reset timeout vs. temperature figure 3. supply current vs. temperature (no load) temperature ( c) temperature ( c) 150 100 50 0 ? 50 160 180 200 220 240 260 150 100 50 0 ? 50 0 2 4 6 8 10 12 figure 4. power ? down reset delay vs. temperature figure 5. normalized reset threshold vs. temperature temperature ( c) temperature ( c) 150 100 50 0 ? 50 0 2 4 6 8 10 12 14 120 100 80 60 40 20 0 0.9988 0.9990 0.9992 0.9994 0.9996 0.9998 1.0000 1.0002 power ? up reset timeout (ms) supply current ( a) power ? down reset delay ( s) normalized threshold v cc = 5 v v cc = 2.5 v v cc = 5.5 v v cc = 3.6 v
cat853, cat859, cat863, cat869 http://onsemi.com 5 detailed description reset timing the reset signal is asserted low for the cat853, cat863, cat859, and cat869 when the power supply voltage falls below the threshold trip voltage and remains asserted for at least 140 ms after the power supply voltage has risen above the threshol d. 5 v 0 v 5 v 0 v threshold voltage 140 ms minimum reset timeout period power supply voltage figure 6. reset timing diagram reset v cc transient response the cat853, cat863, cat859, and cat869 protect ps against brownout failure. short duration transients of 4 s or less and 100 mv amplitude typically do not cause a false reset. figure 7 shows the maximum pulse duration of negative ? going v cc transients that do not cause a reset condition. as the amplitude of the transient goes further below the threshold (increasing v th ? v cc ), the maximum pulse duration decreases. in this test, the v cc starts from an initial voltage of 0.5 v above the threshold and drops below it by the amplitude of the overdrive voltage (v th ? v cc ). figure 7. maximum transient duration without causing a reset pulse vs. reset comparator overdrive reset overdrive v th ? v cc (mv) 1000 100 10 1 0 5 10 15 20 25 30 transient duration (s) ?m? threshold ?c? threshold t amb = 25 c valid reset with v cc under 1.0 v to ensure that the cat859 and cat869 reset pin is in a known state when v cc is under 1.0 v, a > 10 k pull ? down resistor between reset pin and gnd is recommended. cat8x9 gnd power supply figure 8. reset valid with v cc under 1.0 v 10 k v cc reset
cat853, cat859, cat863, cat869 http://onsemi.com 6 bi ? directional reset pin interfacing the cat859 and cat869 can interface with p/ c bi ? directional reset pins by connecting a 4.7 k resistor in series with the cat859 and cat869 reset output and the p/ c bi ? directional reset pin. cat8x9 gnd power supply buffered buf input gnd bi ? directional i/o pin (for example: 68hc11) figure 9. bi ? directional reset pin interfacing v cc reset v cc 4.7 k reset reset p cat853 and cat863 open ? drain reset application the cat853 and cat863 features an open ? drain reset output and therefore need a pull ? up resistor on the output for proper operation, as shown on figure 10. an advantage of the open ? drain output includes the ability to ?wire and? several outputs together to form an inexpensive logic circuit. it is also possible to have the pull ? up resistor connected to a different supply which can be higher than the cat8x3 v cc pin. the value of the pull ? up resistor is not critical in most applications, typical values being between 5 k and 10 k . cat8x3 gnd power supply input gnd 5 k figure 10. typical cat8x3 open ? drain circuit configuration v cc reset v cc p reset
cat853, cat859, cat863, cat869 http://onsemi.com 7 package dimensions sot ? 23, 3 lead case 527ag ? 01 issue o e1 e a1 e e1 b d 3 12 c a top view side view end view l1 l notes: (1) all dimensions are in millimeters. angles in degrees. (2) complies with jedec to-236. symbol min nom max a a1 b c d e e1 e e1 l1 0o 8o l 0.013 0.37 0.085 2.80 2.10 1.20 1.90 bsc 0.40 ref 1.12 0.10 0.50 0.18 3.04 2.64 1.40 0.54 ref 0.95 bsc 0.89
cat853, cat859, cat863, cat869 http://onsemi.com 8 ordering information order number voltage top mark (note 2) reset package quantity per reel (note 3) nipdau matte ? tin nipdau matte ? tin cat853ltbi ? gt3 cat853ltbi ? t3 4.63 v vpa vpr low sot ? 23 ? 3 3,000 cat853mtbi ? gt3 cat853mtbi ? t3 4.38 v vpa vpr cat853ftbi ? gt3 cat853ftbi ? t3 4.20 v vpa vpr cat853jtbi ? gt3 cat853jtbi ? t3 4.00 v vpa vpr cat853ttbi ? gt3 cat853ttbi ? t3 3.08 v vpa vpr cat853stbi ? gt3 cat853stbi ? t3 2.93 v vpa vpr cat853rtbi ? gt3 cat853rtbi ? t3 2.63 v vpa vpr cat853ctbi ? gt3 cat853ctbi ? t3 2.40 v vpa vpr cat853ztbi ? gt3 cat853ztbi ? t3 2.32 v vpa vpr cat859ltbi ? gt3 cat859ltbi ? t3 4.63 v vna vnr low sot ? 23 ? 3 3,000 cat859mtbi ? gt3 cat859mtbi ? t3 4.38 v vna vnr cat859ftbi ? gt3 cat859ftbi ? t3 4.20 v vna vnr cat859jtbi ? gt3 cat859jtbi ? t3 4.00 v vna vnr cat859ttbi ? gt3 cat859ttbi ? t3 3.08 v vna vnr cat859stbi ? gt3 cat859stbi ? t3 2.93 v vna vnr cat859rtbi ? gt3 cat859rtbi ? t3 2.63 v vna vnr cat859ctbi ? gt3 cat859ctbi ? t3 2.40 v vna vnr cat859ztbi ? gt3 cat859ztbi ? t3 2.32 v vna vnr cat863ltbi ? gt3 cat863ltbi ? t3 4.63 v vnb vnk low sot ? 23 ? 3 3,000 cat863mtbi ? gt3 cat863mtbi ? t3 4.38 v vnb vnk cat863ftbi ? gt3 cat863ftbi ? t3 4.20 v vnb vnk cat863jtbi ? gt3 cat863jtbi ? t3 4.00 v vnb vnk cat863ttbi ? gt3 cat863ttbi ? t3 3.08 v vnb vnk cat863stbi ? gt3 cat863stbi ? t3 2.93 v vnb vnk cat863rtbi ? gt3 cat863rtbi ? t3 2.63 v vnb vnk cat863ctbi ? gt3 cat863ctbi ? t3 2.40 v vnb vnk cat863ztbi ? gt3 cat863ztbi ? t3 2.32 v vnb vnk cat869ltbi ? gt3 cat869ltbi ? t3 4.63 v vnc vnj low sot ? 23 ? 3 3,000 cat869mtbi ? gt3 cat869mtbi ? t3 4.38 v vnc vnj cat869ftbi ? gt3 cat869ftbi ? t3 4.20 v vnc vnj cat869jtbi ? gt3 cat869jtbi ? t3 4.00 v vnc vnj cat869ttbi ? gt3 cat869ttbi ? t3 3.08 v vnc vnj cat869stbi ? gt3 cat869stbi ? t3 2.93 v vnc vnj cat869rtbi ? gt3 cat869rtbi ? t3 2.63 v vnc vnj cat869ctbi ? gt3 cat869ctbi ? t3 2.40 v vnc vnj cat869ztbi ? gt3 cat869ztbi ? t3 2.32 v vnc vnj 2. threshold and full part numbers will be provided on box and reel labels as well as all shipping documents. 3. for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifications brochure, brd8011/d. 4. for detailed information and a breakdown of device nomenclature and numbering systems, please see the on semiconductor device nomenclature document, tnd310/d, available at www.onsemi.com
cat853, cat859, cat863, cat869 http://onsemi.com 9 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, representation 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. cat853/d 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 ? 5817 ? 1050 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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