cat808 ? 2009 scillc. all rights reserved. 1 doc. no. md-3024 rev. e characteristics subject to change without notice low-power precision voltage detector features ? ultra low current consumption 2.4 a ? accurate voltage detection threshold ? fine voltage detection threshold resolution ? open drain output (active low) ? industrial temperature range -40c to +85c ? 5-pin tsot-23 and 3-pin sot-89 rohs compliant packages applications ? battery-powered systems ? power supply monitoring ? handheld and portable equipment ? processor supervisor reset description the cat808 is a high-precision voltage detector designed for monitoring single cell and multi-cell batteries. voltage detection thresholds between 2.0 v and 3.5 v are provided with 0.1 v resolution and 3.0% accuracy. the cat808 open-drain output is active low until the v dd voltage exceeds the detection threshold. a low hysteresis is built into the device to minimize output ?chatter?, while v dd passes through the detection threshold, and the output transitions high. after the cat808 asserts the output high condition, it continues to monitor v dd until it drops below the detection threshold, when the output goes low until v dd once again exceeds the detection threshold. for ordering information details, see page 7. pin configuration typical application sot-89 3-lead thin sot-23 5-lead note: the value of the pull-up resistor is not critical out shdn gnd in dc-dc converter out v dd gnd battery voltage cat808 10k ? gnd 2 3 1 out v dd nc gnd 2 3 1 nc 5 4 out v dd
cat808 doc. no. md-3024 rev. e 2 ? 2009 scillc. all rights reserved. characteristics subject to change without notice absolute maximum ratings (1) parameters ratings units temperature under bias -55 to +125 oc storage temperature -65 to +150 oc voltage on any pin with respect to gnd (2)(3) -2.0 to v dd + 2.0 v v dd with respect to gnd -2.0 to 7.0 v lead soldering temperature (10 seconds) +300 oc tsot-23-5 250 mw power dissipation sot-89 500 mw recommended operating conditions parameters ratings units v dd +1.2 to +6.0 v operating temperature range -40 to +85 oc dc electrical characteristics t a = -40oc to +85oc, v dd = 1.2v to 6.0v symbol parameter conditions min typ. max units cat808nxxx-27 2.62 2.7 2.78 cat808nxxx-32 3.12 3.2 3.28 v det detection voltage cat808nxxx-35 3.42 3.5 3.58 v v dd = 4.0 v - 2.4 5 v dd = 5.0 v - 3.5 7 i dd current consumption v dd = 6.0 v - 5 10 a v dd =1.2 v 0.6 1.4 - i out output sinkcurrent v ds = 0.5 v v dd =2.4 v 2.9 5 - ma i leak output leakage current v ds = 5.0 v, v dd = 5.0 v - - 1 a t phl/lh response time ? - - 60 s - v det t a -v det detection voltage temperature coefficient (4) - 10 100 ppm/oc notes: (1) stresses above those listed under ?absolut e maximum ratings? may cause permanent dam age to the device. these are stress rat ings only and functional operation of the devices at these or any other conditions outside of those listed in the operational sectio ns of this specification is not implied. exposure to any absolute maximum rating for extended periods may affect device performance and reliability. (2) the minimum dc input voltage is -0.5 v. during transitions , inputs may undershoot to -2.0 v for periods of less than 20 ns . maximum dc voltage on output pins is v cc +0.5 v, which may overshoot to v cc +2.0 v for periods of less than 20 ns. (3) latch-up protection is provided for stresse s up to 100 ma on all pins from -1 v to v cc +1 v. (4) the temperature change ratio in the detection voltage [ ppm/c] is calculated by using the following equation: ] c /o ppm [ 000 , 000 , 1 v - t v det a det ? ?
cat808 ? 2009 scillc. all rights reserved. 3 doc. no. md-3024 rev. e characteristics subject to change without notice operation ? voltage detector the cat808 has an active low output that asserts (pulls low) when the supply voltage drops below the detection threshold voltage (v det ). the open-drain output requires an external pull-up resistor between the output pin and the supply voltage (as shown in the typical application diagram). on power-up, out is held active low until the supply voltage (v dd ) rises above v det . while v dd is above v det , out stays high until v dd drops below v det , then out once again goes low. block diagram timing diagram * voltage of v dd below 1 volt will not be able to maintain low output. pin functions pin function v dd voltage input and power supply gnd ground pin out active low open drain output nc no connect, the pin is electrically open t plh t phl v det(min) v det(min) v det(max) v det v det(max) v det out slews with v dd gnd v oh v dd * out voltage reference out v dd
cat808 doc. no. md-3024 rev. e 4 ? 2009 scillc. all rights reserved. characteristics subject to change without notice 0.00 2.00 4.00 6.00 8.00 10.00 1.00 1.50 2.00 2.50 v dd (v) i out (ma) typical electrical oper ating characteristics typical values at t a = 25 c. v dd supply current vs. v dd supply voltage v det detection voltage vs. temperature response time vs. load capacitance i out transistor output current vs. v dd supply voltage +25oc +90oc -40oc 0 1 2 3 4 5 23456 supply voltage (v) supply current ( a) 2.695 2.7 2.705 2.71 -40 -5 30 65 100 temperature (oc) v det (v) 0.01 0.1 1 10 100 0.000001 0.00001 0.0001 0.001 0.01 0.1 load capacitance [nf] response time [ms] 0.001 0.01 0.1 1 10 100 t plh t phl
cat808 ? 2009 scillc. all rights reserved. 5 doc. no. md-3024 rev. e characteristics subject to change without notice package outline drawings tsot-23 5-lead (td) (1)(2) notes: (1) all dimensions are in millimeters. angles in degrees. (2) complies with jedec specification mo-193. e1 e a2 a1 e b d c a top view side view end view l1 l l2 symbol min nom max a1.00 a1 0.01 0.05 0.10 a2 0.80 0.87 0.90 b0.30 0.45 c 0.12 0.15 0.20 d 2.90 bsc e 2.80 bsc e1 1.60 bsc e0.95typ l 0.30 0.40 0.50 l1 0.60 ref l2 0.25 bsc 0o 8o
cat808 doc. no. md-3024 rev. e 6 ? 2009 scillc. all rights reserved. characteristics subject to change without notice sot-89 3-lead (tf) (1)(2) notes: (1) all dimensions are in millimeters. angles in degrees. (2) lead frame material: copper. df. top view side view bottom view symbol min nom max a 1.40 1.50 1.60 a1 0.30 0.40 0.50 b 0.36 0.42 0.48 b1 0.41 0.47 0.53 c 0.38 0.40 0.43 d 4.40 4.50 4.60 d1 1.40 1.60 1.75 e 2.40 2.50 2.60 e 1.45 1.50 1.55 e1 2.90 3.00 3.10 h3.94 4.25 l0.80 1.20 c d e h l d1 e e1 bb a a1 b1
cat808 ? 2009 scillc. all rights reserved. 7 doc. no. md-3024 rev. e characteristics subject to change without notice example of ordering information temperature r ange i = industrial (-40c to 85c) prefix device # suffix product number 808n package td: tsot-23-5 tf: sot-89 optional company id lead finish g: nipdau blank: matte-tin voltage detection level -20: 2.0v -35: 3.5v 808n td i -27 cat tape & reel t: ta pe & r e e l 1: 1000 reel 3: 3000 reel notes: (1) all packages are rohs-compliant (lead-free, halogen-free). (2) the standard finish is nipdau. (3) the device used in the above example is a cat808ntdi-27gt3 (t sot-23-5, industrial temperature, 2.7 v detection level, nipda u, tape & reel). (4) for additional detection voltage, package and temperature options , please contact your nearest on semiconductor sales offic e. ordering information orderable part number package detection voltage [v] top marking cat808ntdi-27gt3 tsot-23-5 2.70 mvym cat808ntdi-32gt3 tsot-23-5 3.20 mvym cat808ntdi-35gt3 tsot-23-5 3.50 mvym cat808ntfi-27-t1* sot-89 2.70 aaxxx CAT808NTFI-32-T1* sot-89 3.20 aaxxx cat808ntfi-35-t1* sot-89 3.50 aaxxx * part number is not exactly the same as the ?example of or dering information? shown above. for part numbers marked with * there are two hyphens in the orderable part number. notes: (1) ym ? year and month code. (2) xxx ? assembly location code and last 2 digits of assembly lot code. (3) sot-89 is offered in matte-tin only.
cat808 on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to make changes with out further notice to any products herein. scillc make s no warranty, representa tion or guarantee regarding the suitability of its products for any pa rticular 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. sci llc 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 officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly o r 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 manufact ure 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 literature fulfillment: literature distribution ce nter 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 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 on semiconductor website: www.onsemi.com order literature: http://www.onsemi.com/orderlit for additional information, please contact your local sales representative doc. no. md-3024 rev. e 8 ? 2009 scillc. all rights reserved. characteristics subject to change without notice revision history date rev. description 7-nov-06 a initial issue 10-may-07 b update features update description update dc electrical characteristics update example of ordering information update top marking 5-nov-08 c added md ? to document number change logo and fine print to on semiconductor 17-mar-09 d update package outline drawing - sot-89 3-lead (tf) 13-jul-09 e update ordering information table
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