semiconductor technical data micropower undervoltage sensing circuits n suffix plastic package case 1212 (sot235) 5 1 order this document by mc33464/d h suffix plastic package case 1213 (sot89) tab 1 (tab is connected to pin 2) 15 4 2 3 (top view) reset input ground n/c n/c 1 2 3 (top view) reset input ground ta b 1 motorola analog ic device data
the mc33464 series are micropower undervoltage sensing circuits that are specifically designed for use with battery powered microprocessor based systems, where extended battery life is required. a choice of several threshold voltages from 0.9 v to 4.5 v are available. these devices feature a very low quiescent bias current of 0.8 m a typical. the mc33464 series features a highly accurate voltage reference, a comparator with precise thresholds and builtin hysteresis to prevent erratic reset operation, a choice of output configurations between open drain or complementary mos, and guaranteed operation below 1.0 v with extremely low standby current. these devices are available in either sot89 3pin or sot23 5pin surface mount packages. applications include direct monitoring of the mpu/logic power supply used in portable, appliance, automotive and industrial equipment. mc33464 features: ? extremely low standby current of 0.8 m a at v in = 1.5 v ? wide input voltage range (0.7 v to 10 v) ? monitors power supply voltages from 1.1 v to 5.0 v ? high accuracy detector threshold ( 2.5%) ? two reset output types (open drain or complementary drive) ? two surface mount packages (sot89 or sot23 5pin) ordering information device threshold voltage type marking package (qty/reel) mc33464h09at1 0.9 o t09a sot 89 mc33464h20at1 2.0 open t20a sot 89 mc33464h27at1 2.7 drain t27a sot 89 mc33464h30at1 3.0 reset t30a sot 89 mc33464h45at1 4.5 reset t45a sot89 mc33464h09ct1 0.9 cl t09c sot 89 ( 1000 ) mc33464h20ct1 2.0 com p l. t20c (1000) mc33464h27ct1 2.7 compl . mos t27c mc33464h30ct1 3.0 mos reset t30c mc33464h43ct1 4.3 r ese t t43c mc33464h45ct1 4.5 t45c mc33464n09atr 0.9 o 9n sot 23 mc33464n20atr 2.0 o 0r sot 23 mc33464n21atr 2.1 open 1r sot 23 mc33464n27atr 2.7 drain 7r sot 23 mc33464n30atr 3.0 reset 0s sot 23 mc33464n45atr 4.5 reset 5t sot23 mc33464n48atr 4.8 8t sot 23 (3000) mc33464n09ctr 0.9 cl 9f () mc33464n20ctr 2.0 compl. 0j mc33464n27ctr 2.7 mos 7j mc33464n30ctr 3.0 reset 0k mc33464n45ctr 4.5 reset 5l other voltages from 0.9 to 6.0 v, in 0.1 v increments, are available. consult factory for information. ? motorola, inc. 1999 rev 2, 07/1999
mc33464 2 motorola analog ic device data representative block diagrams this device contains 25 active transistors. mc33464xyyatz open drain configuration mc33464xyyctz complementary drive configuration x denotes package type yy denotes threshold voltage tz denotes taping type v ref 2 input 1 reset 3 gnd v ref 2 input 1 reset 3 gnd maximum ratings (t c = 25 c, unless otherwise noted.) rating symbol value unit power input supply voltage v in 0 to 10 v reset output voltage v o 0.3 to 10 v reset output current (source or sink) i o 70 ma power dissipation and thermal characteristics maximum power dissipation case 1212 (sot23) n suffix p d 150 mw thermal resistance, junctiontoambient r q ja 667 c/w maximum power dissipation case 1213 (sot89) h suffix p d 300 mw thermal resistance, junctiontoambient r q ja 333 c/w operating junction temperature t j +125 c operating ambient temperature t a 40 to +85 c storage temperature range t stg 40 to +125 c lead temperature (soldering) t solder 260 c, 10 s
mc33464 3 motorola analog ic device data electrical characteristics (for all values t a = 25 c (note 1), unless otherwise noted.) characteristic symbol min typ max unit comparator threshold voltage v high state output (v in decreasing) v ih 09 suffix 0.878 0.9 0.922 20 suffix 1.95 2.0 2.05 21 suffix 2.048 2.1 2.152 27 suffix 2.633 2.7 2.768 30 suffix 2.925 3.0 3.075 43 suffix 4.193 4.3 4.407 45 suffix 4.388 4.5 4.613 48 suffix 4.680 4.8 4.920 threshold hysteresis v h v 09 suffix 0.027 0.045 0.063 20 suffix 0.060 0.100 0.140 21 suffix 0.063 0.105 0.147 27 suffix 0.081 0.135 0.189 30 suffix 0.090 0.150 0.210 43 suffix 0.129 0.215 0.301 45 suffix 0.135 0.225 0.315 48 suffix 0.144 0.240 0.336 threshold voltage temperature coefficient t c 100 ppm/ c reset output output voltage v high state (complementary output: i source = 1.0 ma) v oh v in 2.1 v in 1.0 v in low state (complementary or open drain: i sink = 1.0 ma) v ol 0.025 0.05 output sink current (v in = 1.5 v, v ol = 0.5 v) i ol 1.0 2.0 ma output source current (v in = 4.5 v, v ol = 2.4 v) i oh 1.0 2.0 ma total device operating input voltage range v in 0.7 to 10 v quiescent input current i in m a v in = 2.9 v 0.9 2.7 v in = 5.6 v 1.2 3.6 propagation delay time (note 2) t p 100 m s notes: 1. low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible. 2. propagation delay time is measured from the rising or falling edge of the input voltage to the point where the output voltage has transitioned to 50% of its final value.
mc33464 4 motorola analog ic device data v in , input voltage (v) i o , output current (ma) i ol , output sink current (ma) v in , input voltage (v) v in , threshold voltage (v) 0 25 0 50 55 4.8 0.0001 100 0 5.0 0 5.0 v ol , output sink voltage (v) t a , ambient temperature ( c) , output delay time (ms) load capacitance ( m f) v o , output voltage (v) i in , quiescent bias current ( a) m figure 1. quiescent current versus input voltage v in , input voltage (v) figure 2. detector threshold versus temperature mc33464h45ct1 figure 3. reset output voltage versus input voltage figure 4. reset output voltage versus sink current figure 5. output delay time versus load capacitance figure 6. output sink current versus input voltage 20 40 4.7 4.0 4.0 15 30 4.6 10 3.0 3.0 10 20 4.5 1.0 2.0 2.0 0 0 4.4 0.1 0 0 0.01 2.0 4.0 6.0 8.0 10 12 25 0 25 50 75 125 1.0 1.0 1.0 2.0 2.0 0.001 2.0 3.0 3.0 3.0 4.0 4.0 0.01 4.0 6.0 8.0 5.0 0.1 5.0 v in = 1.5 v mc33464h45ct1 t a = 25 c mc33464h45ct1 mc33464h45ct1 t a = 25 c t a = 30 c t a = 80 c t a = 25 c t a = 30 c t a = 80 c mc33464h45atr r l = 470 k to v in t a = 25 c v in increasing mc33464h45atr r l = 470 k to v in t a = 25 c v in decreasing v in = 2.0 v v in = 2.5 v v in = 3.5 v v in = 3.0 v v in = 4.0 v upper threshold v in increasing lower threshold v in decreasing 1.0 100 1.0 10 5.0 5.0 7.0 hysteresis voltage t p
mc33464 5 motorola analog ic device data figure 7. microprocessor reset circuit with delay v ref 2 input 1 reset 3 gnd microprocessor c delay 470 k v in a time delayed reset can be accomplished with the addition of c delay . figure 5 provides a graph of time delays, for both rising and falling output waveform edges, as a function of c delay . if another value of pullup resistance is used, the time delay can be calculated by using the equation: t delay rc delay 1 1 v th(mpu) v in t p where vth mpu is the microprocessor reset input threshold voltage and t p is the propagation delay internal to the mc33464. figure 8. microprocessor reset circuit v ref 2 input 1 reset 3 gnd microprocessor v in
mc33464 6 motorola analog ic device data h suffix plastic package case 121301 (sot89) issue o n suffix plastic package case 121201 (sot235) issue o outline dimensions dim min max millimeters a1 0.00 0.10 a2 1.00 1.30 b 0.30 0.50 c 0.10 0.25 d 2.80 3.00 e 2.50 3.10 e1 1.50 1.80 e 0.95 bsc e1 1.90 bsc l l1 0.45 0.75 notes: 1. dimensions are in millimeters. 2. interpret dimensions and tolerances per asme y14.5m, 1994. 3. datum c is a seating plane. a 1 5 23 4 d e1 b l1 e e e1 c m 0.10 c s b s a b 5x a2 a1 s 0.05 c l 0.20 dim min max millimeters a2 1.40 1.60 b 0.37 0.57 b1 0.32 0.52 c 0.30 0.50 d 4.40 4.60 d1 1.50 1.70 e 4.25 e1 2.40 2.60 e 1.50 bsc e1 3.00 bsc l1 0.80 notes: 1. dimensions are in millimeters. 2. interpret dimensions and tolerancing per asme y14.5m, 1994. 3. datum c is a seating plane. a d e1 b l1 e d1 e e1 c m 0.10 c s b s a m 0.10 c s b s a b b1 2x a2 c sot89 sot235 2.4 1.0 0.7 max. 0.95 0.95 1.9 (unit: mm) 3.0 1.5 2.0 1.5 1.5 (unit: mm) 0.7 1.0 1.0 1.0 45 recommended footprint for surface mount applications
mc33464 7 motorola analog ic device data notes
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