?004 fairchild semiconductor corporation 1 www.fairchildsemi.com a ugust 2004 fm803 3-pin ? supervisor device fm803 rev. c.4 fm803 3-pin ? supervisor device general description the fm803 is a supervisory device designed to monitor power supply or other system voltage. fm803 generates a reset pulse whenever the voltage being monitored is out of tolerance. once asserted, the reset pulse is guaranteed to be valid for a mini- m um of 140ms (256ms typical ). the reset output of fm803 is of active low open-drain type and has an internal pull-up resistor (sot23 package only). several threshold voltages are offered to accommodate 5.0v, 3.3v, 3.0v and 2.7v system voltages. these devices are offered in space saving 3-pin sot23 and sc70 packages. features a utomatic reset generation on power-up minimum 140 ms reset pulse internal 5k ? pull-up resistor (sot23 package) other reset pulse choices available: 32 - 256 ms operating temperature -40? to + 105? (sot23) -40? to +85? (sc70) choice of reset thresholds: 4.63v, 4.38v, 4.00v, 3.08v, 2.93v, 2.63v sot23-3 and sc70-3 packages t ypical operating circuit connection diagram sc70-3 & sot23-3 packages 1 fm803 controller 2 3 v cc gnd reset gnd v cc reset 1 fm803 2 3
fm803 3-pin ? supervisor device 2 www.fairchildsemi.com fm803 rev. c.4 absolute maximum ratings v oltage on any terminal relative to gnd v cc -0.3v to +6.0v reset -0.3v to +6.0v input current 20ma output current: reset 20ma rate of rise of v cc 100v/? continuous power dissipation (t a = +70?) sot23-3 (derate 4mw/? above +70?) 320mw operating temperature range -40? to +105? storage temperature range -65? to +150? lead temperature (soldering, 10s) +300? these are stress ratings only, and functional operation is not implied for these levels or beyond. exposure to absolute maximum rating conditions for extended periods may affect device reliability. electrical characteristics sot-23 package (t a = 25? unless otherwise noted) v cc = full range, as noted under conditions. see note 1. note 1: t esting in production is 25? only. limits over temperature are guaranteed by design. note 2: t ypical values are at 25?. note 3: recommended minimum slew rate for the v cc rampup is 200mv/sec in the 0 to 2v range for the device to function properly. p arameter symbol conditions min typ (note 2) max units operating voltage v cc t a = -40? to +105? 1.1 5.5 v supply current i cc t a = -40? to +105?, v cc < 5.5v fm803j/l/m 510 a t a = -40? to +105?, v cc < 3.6v fm803r/s/t 36 reset threshold v th fm803l t a = -40? to +105? 4.40 4.63 4.86 v fm803m t a = -40? to +105? 4.18 4.38 4.52 fm803j t a = -40? to +105? 3.90 4.00 4.18 fm803t t a = -40? to +105? 2.97 3.08 3.19 fm803s t a = -40? to +105? 2.79 2.93 3.00 fm803r t a = -40? to +105? 2.49 2.63 2.70 reset threshold tempco 30 ppm/? v cc to reset delay v cc = v th to (v th - 100mv) 10 ? reset active timout period ta = -40? to +105? 140 256 560 ms fm803 output low v ol v cc = v th (min), i sink = 1.2ma, fm803r/s/t 0.3 v v cc = v th (min), i sink = 3.2ma, fm803j/l/m 0.4 v cc = < 1.0v, i sink = 50? 0.3 open-drain output leakage current v cc > v th (max), i reset = 1 0.8v cc 1 a
fm803 3-pin ? supervisor device 3 www.fairchildsemi.com fm803 rev. c.4 absolute maximum ratings v oltage on any terminal relative to gnd v cc -0.3v to +6.0v reset -0.3v to (v cc + 0.3v) input current 20ma output current: reset 20ma rate of rise of v cc 100v/? continuous power dissipation (t a = +70?) sc70-3 174mw operating temperature range -40? to +85? storage temperature range -65? to +150? lead temperature (soldering, 10s) +300? these are stress ratings only, and functional operation is not implied for these levels or beyond. exposure to absolute maximum rating conditions for extended periods may affect device reliability. electrical characteristics sc70 package (t a = 25? unless otherwise noted) v cc = full range, as noted under conditions. see note 1. note 1: t esting in production is 25? only. v cc = 5v for fm803l, v cc = 3.3v for fm803t/s and v cc = 3v for fm803r. limits over temperature are guaranteed by design. note 2: t ypical values are at 25?. p arameter symbol conditions min typ (note 2) max units operating voltage v cc t a = 0? to +70? 1.4 5.5 v t a = -40? to +85? 1.6 5.5 supply current i cc t a = -40? to +85?, v cc < 5.5v fm803j/l/m 915 a t a = -40? to +85?, v cc < 3.6v fm803r/s/t 610 reset threshold v th fm803l t a = -40? to +85? 4.40 4.63 4.86 v fm803t t a = -40? to +85? 2.97 3.08 3.19 fm803s t a = -40? to +85? 2.79 2.93 3.00 fm803r t a = -40? to +85? 2.49 2.63 2.70 reset threshold tempco 30 ppm/? v cc to reset delay (note 2) v cc = v th to (v th - 100mv) 10 ? reset active timout period t a = -40? to +85? 140 256 560 ms fm803 output low v ol v cc = v th (min), i sink = 1.2ma, fm803r/s/t 0.35 v v cc = v th (min), i sink = 3.2ma, fm803l 0.4 v cc = < 1.0v, i sink = 50? 0.3 open-drain output leakage current v cc > v th (max), reset = 1 7 ?
fm803 3-pin ? supervisor device 4 www.fairchildsemi.com fm803 rev. c.4 pin descriptions circuit timing (ex: fm803) when operating properly with 5v v cc (for example), reset will also be about 5v. when v cc starts to fall, reset will follow it down as shown. when v cc drops below v th , reset drops to g round (?ssues a reset? and stays there unless v cc also f alls below its minimum operating voltage, approx. 1v. at this point, the supervisor loses control, and its output may rise, only to again follow v cc down to the ground. when v cc begins to rise, reset f ollows it until 1.0v or so is reached, whereupon the device regains control, reset is pulled to ground, etc. when v cc r ises above v th , reset comes out of reset 140 ms later. if it is required that a lower value than gnd + 1.0v is needed on reset signal during v cc 1v, a 100k resistor may be used on the device output to gnd. pin number name function 1 gnd ground 2 reset reset remains low while v cc is below v th , and for at least 140ms after v cc rises above v th . 3v cc 3.3v v th 1v gnd 3.3v v th 1v gnd v cc reset 140ms (min)
fm803 3-pin ? supervisor device 5 www.fairchildsemi.com fm803 rev. c.4 ordering information note 4: devices listed above feature 250ms typical reset pulse width. consult fairchild sales for other reset pulse width options. note 5: f or the sc70 package, the third character of the top marking, identi?d as ? in the above table identi?s wafer lot code. part number top marking reset threshold (v) output t ype package t ype pa c king method fm803ls3x 03l 4.63 open-drain, active low 3-pin, sot23 3000 units in t&r fm803ms3x 03m 4.38 open-drain, active low 3-pin, sot23 3000 units in t&r fm803js3x 03j 4.00 open-drain, active low 3-pin, sot23 3000 units in t&r fm803ts3x 03t 3.08 open-drain, active low 3-pin, sot23 3000 units in t&r fm803ss3x 03s 2.93 open-drain, active low 3-pin, sot23 3000 units in t&r FM803RS3X 03r 2.63 open-drain, active low 3-pin, sot23 3000 units in t&r fm803lp3x qly 4.63 open-drain, active low 3-pin, sc70 3000 units in t&r fm803tp3x qty 3.08 open-drain, active low 3-pin, sc70 3000 units in t&r fm803sp3x qsy 2.93 open-drain, active low 3-pin, sc70 3000 units in t&r fm803rp3x qry 2.63 open-drain, active low 3-pin, sc70 3000 units in t&r
fm803 3-pin ? supervisor device 6 www.fairchildsemi.com fm803 rev. c.4 physical dimensions inches (millimeters) unless otherwise noted sot-23 package dimensions fs pkg code au 0 .12 0 0 .1 05 0 . 0 7 9 0 . 0 7 1 0 . 004 0 . 001 0 . 0 4 0 0 . 031 0 . 0 2 1 0 . 0 1 5 0 . 055 0 . 0 4 7 0 . 098 0 . 083 0 . 0 1 0 0 . 005 0 . 0059 0 . 0035 0 - 8 pk g c l 0.76 0.76 0.95 2.29 land pattern recommendation
7 www.fairchildsemi.com fm803 rev. c.4 fm803 3-pin ? supervisor device life support policy f airchild's products are not authorized for use as critical components in life support devices or systems without the express w r itten approval of the president of fairchild semiconductor corporation. as used 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 whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a signi?ant 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 e xpected to cause the failure of the life support device or system, or to affect its safety or effectiveness. f airchild semiconductor fairchild semiconductor fairchild semiconductor fairchild semiconductor americas europe hong kong japan ltd. customer response center f ax: +44 (0) 1793-856858 8/f, room 808, empire centre 4f, natsume bldg. t el. 1-888-522-5372 deutsch tel: +49 (0) 8141-6102-0 68 mody road, tsimshatsui east 2-18-6, yushima, bunkyo-ku english tel: +44 (0) 1793-856856 kowloon. hong kong tokyo, 113-0034 japan fr an?ais tel: +33 (0) 1-6930-3696 tel; +852-2722-8338 tel: 81-3-3818-8840 italiano tel: +39 (0) 2-249111-1 fax: +852-2722-8383 fax: 81-3-3818-8841 physical dimensions inches (millimeters) unless otherwise noted sc70 package dimensions .004 (.10) .026 (.65) .052 (1.3) .087 (2.2) .071 (1.8) .016 (.40) .012 (.30) .043 (1.1) .032 (.80) .018 (.45) .006 (.15) .010 (.25) .004 (.10) .009 (.23) .005 (.13) .087 (2.2) .079 (2.0) .053 (1.35) .045 (1.15) land pattern recommendation 0.65 1.80 0.5 0.6 0.65
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