? semiconductor components industries, llc, 2005 february, 2005 ? rev. 6 1 publication order number: lm285/d lm285, lm385b micropower voltage reference diodes the lm285/lm385 series are micropower two ? terminal bandgap voltage regulator diodes. designed to operate over a wide current range of 10 a to 20 ma, these devices feature exceptionally low dynamic impedance, low noise and stable operation over time and temperature. tight voltage to lerances are achieved by on ? chip trimming. the large dynamic operating range enables these devices to be used in applications with widely varying supplies with excellent regulation. extremely low operating current make these devices ideal for micropower circuitry like portable instrumentation, regulators and other analog circuitry where extended battery life is required. the lm285/lm385 series are packaged in a low cost to ? 226 plastic case and are available in two voltage versions of 1.235 v and 2.500 v as denoted by the device suffix (see ordering information table). the lm285 is specified over a ? 40 c to +85 c temperature range while the lm385 is rated from 0 c to +70 c. the lm385 is also available in a surface mount plastic package in voltages of 1.235 v and 2.500 v. features ? pb ? free packages are available ? operating current from 10 a to 20 ma ? 1.0%, 1.5%, 2.0% and 3.0% initial tolerance grades ? low temperature coefficient ? 1.0 dynamic impedance ? surface mount package available figure 1. representative schematic diagram open for 1.235 v 10 k cathode anode 100 k 500 600 k 600 k 425 k 74.3 k 8.45 k 600 k 360 k open for 2.5 v ? + lm385 ? 1.2 1.235 v 3.3 k 1.5 v battery standard application soic ? 8 d suffix case 751 http://onsemi.com (bottom view) 1 32 8 7 6 5 cathode n.c. n.c. n.c. 4 3 2 anode n.c. n.c. 1 n.c. n.c. cathode anode to ? 92 ? 3 (to ? 226) z suffix case 29 see detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet. ordering information marking diagrams xxx = 1.2 or 2.5 y = 2 or 3 z = 1 or 2 a = assembly location l = wafer lot y = year w, ww = work week lmy85 z ? xxx alyww y85 ? z ayw 1 8 1 8
lm285, lm385b http://onsemi.com 2 maximum ratings (t a = 25 c, unless otherwise noted) rating symbol value unit reverse current i r 30 ma forward current i f 10 ma operating ambient temperature range lm285 lm385 t a ? 40 to +85 0 to +70 c operating junction temperature t j +150 c storage temperature range t stg ? 65 to + 150 c electrostatic discharge sensitivity (esd) human body model (hbm) machine model (mm) charged device model (cdm) esd 4000 400 2000 v maximum ratings are those values beyond which device damage can occur. maximum ratings applied to the device are individual str ess limit values (not normal operating conditions) and are not valid simultaneously. if these limits are exceeded, device functional operation i s not implied, damage may occur and reliability may be affected. electrical characteristics (t a = 25 c, unless otherwise noted) lm285 ? 1.2 lm385 ? 1.2 / lm385b ? 1.2 characteristic symbol min typ max min typ max unit reverse breakdown voltage (i rmin i r 20 ma) lm285 ? 1.2/lm385b ? 1.2 t a = t low to t high (note 1) lm385 ? 1.2 t a = t low to t high (note 1) v (br)r 1.223 1.200 ? ? 1.235 ? ? ? 1.247 1.270 ? ? 1.223 1.210 1.205 1.192 1.235 ? 1.235 ? 1.247 1.260 1.260 1.273 v minimum operating current t a = 25 c t a = t low to t high (note 1) i rmin ? ? 8.0 ? 10 20 ? 8.0 ? 15 20 a reverse breakdown voltage change with current i rmin i r 1.0 ma, t a = +25 c t a = t low to t high (note 1) 1.0 ma i r 20 ma, t a = +25 c t a = t low to t high (note 1) v (br)r ? ? ? ? ? ? ? ? 1.0 1.5 10 20 ? ? ? ? ? ? ? ? 1.0 1.5 20 25 mv reverse dynamic impedance i r = 100 a, t a = +25 c z ? 0.6 ? ? 0.6 ? average temperature coefficient 10 a i r 20 ma, t a = t low to t high (note 1) v (br) / t ? 80 ? ? 80 ? ppm/ c wideband noise (rms) i r = 100 a, 10 hz f 10 khz n ? 60 ? ? 60 ? v long term stability i r = 100 a, t a = +25 c 0.1 c s ? 20 ? ? 20 ? ppm/khr reverse breakdown voltage (i rmin i r 20 ma) lm285 ? 2.5/lm385b ? 2.5 t a = t low to t high (note 1) lm385 ? 2.5 t a = t low to t high (note 1) v (br)r 2.462 2.415 ? ? 2.5 ? ? ? 2.538 2.585 ? ? 2.462 2.436 2.425 2.400 2.5 ? 2.5 ? 2.538 2.564 2.575 2.600 v minimum operating current t a = 25 c t a = t low to t high (note 1) i rmin ? ? 13 ? 20 30 ? ? 13 ? 20 30 a 1. t low = ? 40 c for lm285 ? 1.2, lm285 ? 2.5 t high = +85 c for lm285 ? 1.2, lm285 ? 2.5 t low = 0 c for lm385 ? 1.2, lm385b ? 1.2, lm385 ? 2.5, lm385b ? 2.5 t high =+70 c for lm385 ? 1.2, lm385b ? 1.2, lm385 ? 2.5, lm385b ? 2.5
lm285, lm385b http://onsemi.com 3 electrical characteristics (t a = 25 c, unless otherwise noted) lm285 ? 1.2 lm385 ? 1.2 / lm385b ? 1.2 characteristic symbol min typ max min typ max unit reverse breakdown voltage change with current i rmin i r 1.0 ma, t a = +25 c t a = t low to t high (note 2) 1.0 ma i r 20 ma, t a = +25 c t a = t low to t high (note 2) v (br)r ? ? ? ? ? ? ? ? 1.0 1.5 10 20 ? ? ? ? ? ? ? ? 2.0 2.5 20 25 mv reverse dynamic impedance i r = 100 a, t a = +25 c z ? 0.6 ? ? 0.6 ? average temperature coefficient 20 a i r 20 ma, t a = t low to t high (note 2) v (br) / t ? 80 ? ? 80 ? ppm/ c wideband noise (rms) i r = 100 a, 10 hz f 10 khz n ? 120 ? ? 120 ? v long term stability i r = 100 a, t a = +25 c 0.1 c s ? 20 ? ? 20 ? ppm/khr 2. t low = ? 40 c for lm285 ? 1.2, lm285 ? 2.5 t high = +85 c for lm285 ? 1.2, lm285 ? 2.5 t low = 0 c for lm385 ? 1.2, lm385b ? 1.2, lm385 ? 2.5, lm385b ? 2.5 t high =+70 c for lm385 ? 1.2, lm385b ? 1.2, lm385 ? 2.5, lm385b ? 2.5
lm285, lm385b http://onsemi.com 4 1.1 t, time (ms) 0 1.0 0.9 0.8 0.7 0.6 0.3 0.2 0.1 1.25 1.50 0.75 0.50 0 5.0 0.25 10 0 1.00 output (v) input (v) input dut output 100 k ? ? ? ? c) 1.210 1.220 1.230 1.240 1.250 100 75 50 025 ?25 ?50 v (br)r , reverse voltage (v) 10 0.01 100 1.0 0.1 1.2 1.0 0.8 0.6 0.4 0.2 0 i f , forward current (ma) v f , forward voltage (v) typical performance curves for lm285 ? 1.2 / 385 ? 1.2 / 385b ? 1.2 0.2 0.4 0.6 0.8 1.0 1.2 10 1.4 100 1.0 0.1 0 v( br) , reverse voltage (v) , reverse current (a) i r 0.1 1.0 10 100 0.01 8.0 6.0 4.0 2.0 0 ?2.0 10 i r , reverse current (ma) v (br)r , reverse voltage change (mv) ? t a = +85 c +25 c ?40 c t a = +85 c +25 c ?40 c t a = ?40 c +25 c +85 c i r = 100 a figure 2. reverse characteristics figure 3. reverse characteristics figure 4. forward characteristics figure 5. temperature drift figure 6. noise voltage figure 7. response time
lm285, lm385b http://onsemi.com 5 v( br) , reverse voltage (v) 1.1 t, time (ms) 0 1.0 0.9 0.8 0.7 0.6 0.3 0.2 0.1 2.50 3.00 1.50 1.00 0 5.0 0.50 10 0 2.00 output (v) input (v) input dut output 100 k ? ? ? ? c) 2.450 2.470 2.490 2.510 2.520 100 75 50 025 ?25 ?50 v (br)r , reverse voltage (v) 10 0.01 100 1.0 0.1 1.2 1.0 0.8 0.6 0.4 0.2 0 i f , forward current (ma) v f , forward voltage (v) typical performance curves for lm285 ? 2.5 / 385 ? 2.5 / 385b ? 2.5 0.5 1.0 1.5 2.0 2.5 3.0 10 3.5 100 1.0 0.1 0 figure 8. reverse characteristics , reverse current (a) i r figure 9. reverse characteristics 0.1 1.0 10 100 0.01 8.0 6.0 4.0 2.0 0 ?2.0 10 i r , reverse current (ma) v (br)r , reverse voltage change (mv) ? t a = +85 c +25 c ?40 c t a = +85 c +25 c ?40 c figure 10. forward characteristics t a = ?40 c +25 c +85 c figure 11. temperature drift i r = 100 a figure 12. noise voltage figure 13. response time 2.460 2.480 2.500
lm285, lm385b http://onsemi.com 6 ordering information device operating temperature range reverse break ? down voltage package shipping ? lm285d ? 1.2 t a = ? 40 c to +85 c 1.235 v soic ? 8 98 units / rail lm285d ? 1.2r2 t a = ? 40 c to +85 c 1.235 v soic ? 8 2000 / tape & reel lm285d ? 1.2r2g t a = ? 40 c to +85 c 1.235 v soic ? 8 (pb ? free) 2000 / tape & reel lm285d ? 2.5 t a = ? 40 c to +85 c 2.500 v soic ? 8 98 units / rail lm285d ? 2.5r2 t a = ? 40 c to +85 c 2.500 v soic ? 8 2500 / tape & reel lm285d ? 2.5r2g t a = ? 40 c to +85 c 2.500 v soic ? 8 (pb ? free) 2500 / tape & reel lm285z ? 1.2 t a = ? 40 c to +85 c 1.235 v to ? 92 2000 units / bag lm285z ? 1.2g t a = ? 40 c to +85 c 1.235 v to ? 92 (pb ? free) 2000 units / bag lm285z ? 2.5 t a = ? 40 c to +85 c 2.500 v to ? 92 2000 units / bag lm285z ? 2.5g t a = ? 40 c to +85 c 2.500 v to ? 92 (pb ? free) 2000 units / bag lm285z ? 1.2ra t a = ? 40 c to +85 c 1.235 v to ? 92 2000 / tape & reel lm285z ? 1.2rag t a = ? 40 c to +85 c 1.235 v to ? 92 (pb ? free) 2000 / tape & reel lm285z ? 2.5ra t a = ? 40 c to +85 c 2.500 v to ? 92 2000 / tape & reel lm285z ? 2.5rag t a = ? 40 c to +85 c 2.500 v to ? 92 (pb ? free) 2000 / tape & reel lm285z ? 2.5rp t a = ? 40 c to +85 c 2.500 v to ? 92 2000 units / fan ? fold lm385bd ? 1.2 t a = 0 c to +70 c 1.235 v soic ? 8 98 units / rail lm385bd ? 1.2g t a = 0 c to +70 c 1.235 v soic ? 8 (pb ? free) 98 units / rail lm385bd ? 1.2r2 t a = 0 c to +70 c 1.235 v soic ? 8 2500 / tape & reel lm385bd ? 1.2r2g t a = 0 c to +70 c 1.235 v soic ? 8 (pb ? free) 2500 / tape & reel lm385bd ? 2.5 t a = 0 c to +70 c 2.500 v soic ? 8 98 units / rail lm385bd ? 2.5g t a = 0 c to +70 c 2.500 v soic ? 8 (pb ? free) 98 units / rail lm385bd ? 2.5r2 t a = 0 c to +70 c 2.500 v soic ? 8 2500 / tape & reel lm385bd ? 2.5r2g t a = 0 c to +70 c 2.500 v soic ? 8 (pb ? free) 2500 / tape & reel lm385bz ? 1.2 t a = 0 c to +70 c 1.235 v to ? 92 2000 units / bag lm385bz ? 1.2g t a = 0 c to +70 c 1.235 v to ? 92 (pb ? free) 2000 units / bag lm385bz ? 1.2ra t a = 0 c to +70 c 1.235 v to ? 92 2000 / tape & reel lm385bz ? 1.2rag t a = 0 c to +70 c 1.235 v to ? 92 (pb ? free) 2000 / tape & reel lm385bz ? 2.5 t a = 0 c to +70 c 2.500 v to ? 92 2000 units / rail lm385bz ? 2.5g t a = 0 c to +70 c 2.500 v to ? 92 (pb ? free) 2000 units / rail lm385bz ? 2.5ra t a = 0 c to +70 c 2.500 v to ? 92 2000 units / rail lm385bz ? 2.5rag t a = 0 c to +70 c 2.500 v to ? 92 (pb ? free) 2000 units / rail ?for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifi- cations brochure, brd8011/d.
lm285, lm385b http://onsemi.com 7 ordering information device shipping ? package reverse break ? down voltage operating temperature range lm385d ? 1.2 t a = 0 c to +70 c 1.235 v soic ? 8 98 units / rail lm385d ? 1.2g t a = 0 c to +70 c 1.235 v soic ? 8 (pb ? free) 98 units / rail lm385d ? 1.2r2 t a = 0 c to +70 c 1.235 v soic ? 8 2500 / tape & reel lm385d ? 1.2r2g t a = 0 c to +70 c 1.235 v soic ? 8 (pb ? free) 2500 / tape & reel lm385d ? 2.5 t a = 0 c to +70 c 2.500 v soic ? 8 98 units / rail lm385d ? 2.5g t a = 0 c to +70 c 2.500 v soic ? 8 (pb ? free) 98 units / rail lm385d ? 2.5r2 t a = 0 c to +70 c 2.500 v soic ? 8 2500 / tape & reel lm385d ? 2.5r2g t a = 0 c to +70 c 2.500 v soic ? 8 (pb ? free) 2500 / tape & reel lm385z ? 1.2 t a = 0 c to +70 c 1.235 v to ? 92 2000 unit / rail lm385z ? 1.2g t a = 0 c to +70 c 1.235 v to ? 92 (pb ? free) 2000 unit / rail lm385z ? 1.2ra t a = 0 c to +70 c 1.235 v to ? 92 2000 unit / rail lm385z ? 1.2rp t a = 0 c to +70 c 1.235 v to ? 92 2000 unit / rail lm385z ? 1.2rpg t a = 0 c to +70 c 1.235 v to ? 92 (pb ? free) 2000 unit / rail lm385z ? 2.5 t a = 0 c to +70 c 2.500 v to ? 92 2000 unit / rail lm385z ? 2.5g t a = 0 c to +70 c 2.500 v to ? 92 (pb ? free) 2000 unit / rail lm385z ? 2.5rp t a = 0 c to +70 c 2.500 v to ? 92 2000 unit / rail ?for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and reel packaging specifi- cations brochure, brd8011/d.
lm285, lm385b http://onsemi.com 8 package dimensions to ? 92 (to ? 226) z suffix case 29 ? 11 issue al notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. contour of package beyond dimension r is uncontrolled. 4. lead dimension is uncontrolled in p and beyond dimension k minimum. r a p j l b k g h section x ? x c v d n n xx seating plane dim min max min max millimeters inches a 0.175 0.205 4.45 5.20 b 0.170 0.210 4.32 5.33 c 0.125 0.165 3.18 4.19 d 0.016 0.021 0.407 0.533 g 0.045 0.055 1.15 1.39 h 0.095 0.105 2.42 2.66 j 0.015 0.020 0.39 0.50 k 0.500 ??? 12.70 ??? l 0.250 ??? 6.35 ??? n 0.080 0.105 2.04 2.66 p ??? 0.100 ??? 2.54 r 0.115 ??? 2.93 ??? v 0.135 ??? 3.43 ??? 1
lm285, lm385b http://onsemi.com 9 package dimensions seating plane 1 4 5 8 n j x 45 k notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimension a and b do not include mold protrusion. 4. maximum mold protrusion 0.15 (0.006) per side. 5. dimension d does not include dambar protrusion. allowable dambar protrusion shall be 0.127 (0.005) total in excess of the d dimension at maximum material condition. 6. 751 ? 01 thru 751 ? 06 are obsolete. new standard is 751 ? 07. a b s d h c 0.10 (0.004) dim a min max min max inches 4.80 5.00 0.189 0.197 millimeters b 3.80 4.00 0.150 0.157 c 1.35 1.75 0.053 0.069 d 0.33 0.51 0.013 0.020 g 1.27 bsc 0.050 bsc h 0.10 0.25 0.004 0.010 j 0.19 0.25 0.007 0.010 k 0.40 1.27 0.016 0.050 m 0 8 0 8 n 0.25 0.50 0.010 0.020 s 5.80 6.20 0.228 0.244 ? x ? ? y ? g m y m 0.25 (0.010) ? z ? y m 0.25 (0.010) z s x s m soic ? 8 nb case 751 ? 07 issue ae 1.52 0.060 7.0 0.275 0.6 0.024 1.270 0.050 4.0 0.155 mm inches scale 6:1 *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*
lm285, lm385b http://onsemi.com 10 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. publication ordering information n. american technical support : 800 ? 282 ? 9855 toll free usa/canada japan : on semiconductor, japan customer focus center 2 ? 9 ? 1 kamimeguro, meguro ? ku, tokyo, japan 153 ? 0051 phone : 81 ? 3 ? 5773 ? 3850 lm285/d sensefet is a trademark of semiconductor components industries, llc. literature fulfillment : literature distribution center for on semiconductor p.o. box 61312, phoenix, arizona 85082 ? 1312 usa phone : 480 ? 829 ? 7710 or 800 ? 344 ? 3860 toll free usa/canada fax : 480 ? 829 ? 7709 or 800 ? 344 ? 3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : http://onsemi.com order literature : http://www.onsemi.com/litorder for additional information, please contact your local sales representative.
|
