? semiconductor components industries, llc, 2011 february, 2011 ? rev. p1 1 publication order number: ncp4587/d ncp4587 product preview 150 ma, tri-mode, ldo linear voltage regulator the ncp4587 is a cmos 150 ma ldo which switches to a low power mode under light current loads. the device automatically switches back to a fast response mode as the output load increases above 3 ma (typ.) or it can be placed in permanent fast mode through a mode select pin. the family is available in a variety of packages: sc ? 70, sot23 and an ultra thin (0.4 mm) small 1.2 x 1.2 mm xdfn. features ? operating input voltage range: 1.4 v to 5.25 v ? output voltage range: 0.8 to 4.0 v (available in 0.1 v steps) ? supply current: low power mode ? 1.0 a fast mode ? 55 a standby mode ? 0.1 a ? very low dropout: 120 mv typ. at 150 ma (v out > 2.6 v) ? 1% output voltage accuracy (v out > 2 v, t j = 25 c) ? high psrr: 70 db at 1 khz (fast response mode) ? line regulation 0.02%/v typ. ? current fold back protection ? stable with ceramic capacitors ? available in 1.2 x 1.2 xdfn, sc ? 70 and sot23 package ? these are pb ? free devices typical applications ? battery powered equipments ? portable communication equipments ? cameras, image sensors and camcorders vin vout ce gnd c1 c2 1 vin vout ncp4587x ae 1 figure 1. typical application schematic this document contains information on a product under development. on semiconductor reserves the right to change or discontinue this product without notice. http://onsemi.com see detailed ordering and shipping information in the package dimensions section on page 5 of this data sheet. ordering information sc ? 70 case 419a xx, xxx= specific device code mm = date code marking diagrams xdfn6 case 711aa sot ? 23 ? 5 case 1212 xx mm xxx xmm xxx mm
ncp4587 http://onsemi.com 2 current limit vin gnd vref ce vout ae ncp4587hxxxx current limit vin gnd vref ce vout ae ncp4587dxxxx figure 2. simplified schematic block diagram pin function description pin no. xdfn pin no. sc ? 70 pin no. sot23 pin name description 4 4 1 vin input pin 2 2 2 gnd ground 3 5 3 ce chip enable pin (active ?h?) 6 3 5 vout output pin 1 1 4 ae auto eco pin 5 ? ? nc no connection absolute maximum ratings rating symbol value unit input voltage (note 1) v in 6.0 v output voltage v out ? 0.3 to v in + 0.3 v chip enable input v ce ? 0.3 to 6.0 v auto eco input v ae ? 0.3 to 6.0 v output current i out 400 ma power dissipation xdfn p d 400 mw power dissipation sc ? 70 380 power dissipation sot23 420 maximum junction temperature t j(max) 150 c storage temperature t stg ? 55 to 125 c esd capability, human body model (note 2) esd hbm 2000 v esd capability, machine model (note 2) esd mm 200 v 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. 1. refer to electrical characteristis and application information for safe operating area. 2. this device series incorporates esd protection and is tested by the following methods: esd human body model tested per aec ? q100 ? 002 (eia/jesd22 ? a114) esd machine model tested per aec ? q100 ? 003 (eia/jesd22 ? a115) latchup current maximum rating tested per jedec standard: jesd78.
ncp4587 http://onsemi.com 3 thermal characteristics rating symbol value unit thermal characteristics, xdfn thermal resistance, junction ? to ? air r ja 250 c/w thermal characteristics, sot23 thermal resistance, junction ? to ? air r ja 238 c/w thermal characteristics, sc ? 70 thermal resistance, junction ? to ? air r ja 263 c/w electrical characteristics ? 40 c t a 85 c; v in = v out(nom) + 1 v or 2.5 v, whichever is greater; i out = 1 ma, c in = c out = 0.47 f, unless otherwise noted. typical values are at t a = +25 c. parameter test conditions symbol min typ max unit operating input voltage (note 3) v in 1.4 5.25 v output voltage t a = +25 c, i out = 5 ma v out > 2 v v out x0.99 x1.01 v v out 2 v ? 20 20 mv ? 40 c t a 85 c, i out = 5 ma v out > 2 v x0.975 x1.015 v v out 2 v ? 50 30 mv output voltage temp. coefficient t a = ? 40 to 85 c 50 ppm/ c line regulation v in = v out + 0.5 v to 5 v, v in 1.4 v i out = 1 ma, (low power mode) line reg 0.50 %/v i out = 10 ma, (fast mode) 0.02 0.20 load regulation i out = 1 ma to 10 ma v out > 2.0 v line reg ? 1.0 1.0 % v out 2.0 v ? 20 20 mv i out = 10 ma to 150 ma 18 40 mv dropout voltage i out = 150 ma 0.8 v v out < 0.9 v v do (note 4) v 0.9 v v out < 1.0 v (note 4) 1.0 v v out < 1.5 v 0.24 0.4 1.5 v v out < 2.6 v 0.19 0.25 2.6 v v out < 4.0 v 0.12 0.18 output current i out 150 ma short current limit v out = 0 v i sc 50 ma quiescent current i out = 0 ma, low power mode (note 5) v out 1.85 v i q 1.0 4.0 a v out > 1.85 v 1.5 4.0 supply current i out = 10 ma, fast mode i gnd 55 a standby current v ce = 0 v, t j = 25 c i stb 0.1 1 a fast mode switch ? over current i out = light to heavy load i outh 8.0 ma low power switch ? over current i out = heavy to light load i outl 1.0 2.0 ma ce pin threshold voltage ce input voltage ?h? v ceh 1.0 v ce input voltage ?l? v cel 0.4 ce pull down current i cepd 0.1 a 3. the maximum input voltage of the electrical characteristics is 5.25 v. in case of exceeding this specification, the ic must b e operated on condition that the input voltage is up to 5.5v and the total operating time is within 500 hrs. 4. v in > 1.4 v condition is dominant against this specification 5. the value of quiescent current is excluding the pull ? down current of ce and ae pin
ncp4587 http://onsemi.com 4 electrical characteristics ? 40 c t a 85 c; v in = v out(nom) + 1 v or 2.5 v, whichever is greater; i out = 1 ma, c in = c out = 0.47 f, unless otherwise noted. typical values are at t a = +25 c. parameter unit max typ min symbol test conditions ae pin threshold voltage ae input voltage ?h? v aeh 1.0 v ae input voltage ?l? v ael 0.4 ae pull down current i aepd 0.1 a power supply rejection ratio v in = v out + 1 v or 2.2 v whichever is higher, v in = 0.2 v pk ? pk , i out = 30 ma, f = 1 khz, fast mode psrr 70 db output noise voltage v out = 1.2 v, i out = 30 ma, f = 10 hz to 100 khz v n 115 v rms low output nch tr. on resistance v in = 4 v, v ce = 0 v r low 50 3. the maximum input voltage of the electrical characteristics is 5.25 v. in case of exceeding this specification, the ic must b e operated on condition that the input voltage is up to 5.5v and the total operating time is within 500 hrs. 4. v in > 1.4 v condition is dominant against this specification 5. the value of quiescent current is excluding the pull ? down current of ce and ae pin
ncp4587 http://onsemi.com 5 application information a typical application circuit for ncp4587 series is shown in figure 3. vin vout ce gnd c1 c2 1 vin vout ncp4587x ae 1 figure 3. typical application schematic input decoupling capacitor (c1) a 1 f ceramic input decoupling capacitor should be connected as close as possible to the input and ground pin of the ncp4587. higher values and lower esr improves line transient response. output decoupling capacitor (c2) a 1 f ceramic output decoupling capacitor is sufficient to achieve stable operation of the ic. if tantalum capacitor is used, and its esr is high, the loop oscillation may result. if output capacitor is composed from few ceramic capacitors in parallel, the operation can be unstable. the capacitor should be connected as close as possible to the output and ground pin. larger values and lower esr improves dynamic parameters. enable operation enable pin ce may be used for turning the regulator on and off. the regulator is switched on when ce pin voltage is above logic high level. enable pin has internal pull down current source. if enable function is not needed connect ce pin to vin. output discharger the d version includes a transistor between vout and gnd that is used for faster discharging of the output capacitor. this function is activated when the ic goes into disable mode. auto eco and fast mode the ncp4587 has two operation modes that have impact on supply current and transient response at low output current. these two modes can be selected by ae pin. if ae pin is at low level auto eco mode is available. please, see supply current vs. output current charts. thermal as power across the ic increases, it might become necessary to provide some thermal relief. the maximum power dissipation supported by the device is dependent upon board design and layout. mounting pad configuration on the pcb, the board material, and also the ambient temperature affect the rate of temperature rise for the part. that is to say, when the device has good thermal conductivity through the pcb, the junction temperature will be relatively low with high power dissipation applications. pcb layout make vin and gnd line sufficient. if their impedance is high, noise pickup or unstable operation may result. connect capacitors c1 and c2 as close as possible to the ic, and make wiring as short as possible. ordering information device nominal output voltage description marking package shipping ? ncp4587dmx12tcg 1.2 v auto discharge ye xdfn (pb ? free) 5000 / tape & reel ncp4587dmx18tcg 1.8 v auto discharge yl xdfn (pb ? free) 5000 / tape & reel ncp4587dmx28tcg 2.8 v auto discharge yw xdfn (pb ? free) 5000 / tape & reel ncp4587dmx30tcg 3.0 v auto discharge yy xdfn (pb ? free) 5000 / tape & reel NCP4587DMX33TCG 3.3 v auto discharge zb xdfn (pb ? free) 5000 / tape & reel ?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. note: to order other package and voltage variants, please contact your on semiconductor sales representative.
ncp4587 http://onsemi.com 6 package dimensions notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. 419a ? 01 obsolete. new standard 419a ? 02. 4. dimensions a and b do not include mold flash, protrusions, or gate burrs. dim a min max min max millimeters 1.80 2.20 0.071 0.087 inches b 1.15 1.35 0.045 0.053 c 0.80 1.10 0.031 0.043 d 0.10 0.30 0.004 0.012 g 0.65 bsc 0.026 bsc h --- 0.10 --- 0.004 j 0.10 0.25 0.004 0.010 k 0.10 0.30 0.004 0.012 n 0.20 ref 0.008 ref s 2.00 2.20 0.079 0.087 b 0.2 (0.008) mm 12 3 4 5 a g s d 5 pl h c n j k ? b ? sc ? 88a (sc ? 70 ? 5/sot ? 353) case 419a ? 02 issue k
ncp4587 http://onsemi.com 7 package dimensions notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. controlling dimension: millimeters. 3. dimension b applies to plated terminal and is measured between 0.15 and 0.25mm from terminal tips. 4. coplanarity applies to all of the terminals. a seating plane d e 0.05 c a a1 2x 2x 0.05 c xdfn6 1.2x1.2, 0.4p case 711aa ? 01 issue o dim a min max millimeters --- 0.40 a1 0.00 0.05 b 0.13 0.23 d e e l pin one reference 0.05 c 0.05 c note 3 l e b 3 6 6x 1 4 mounting footprint* 1.20 bsc 1.20 bsc 0.40 bsc 0.37 0.48 bottom view c dimensions: millimeters 0.66 6x 0.22 6x 1.50 0.40 pitch *for additional information on our pb ? free strategy and soldering details, please download the on semiconductor soldering and mounting techniques reference manual, solderrm/d. c 0.20 0.30 top view b side view note 4 recommended c 6x a m 0.05 b c package outline
ncp4587 http://onsemi.com 8 package dimensions sot ? 23 case 1212 ? 01 issue a 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 2.70 3.10 e 2.50 3.10 e1 1.50 1.80 e 0.95 bsc l l1 0.45 0.75 notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. controlling dimensions: millimeters. 3. datum c is the seating plane. a 1 5 23 4 d e1 b l1 e e c m 0.10 c s b s a b 5x a2 a1 s 0.05 c l 0.20 --- *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* 0.95 dimensions: millimeters pitch 5x 3.30 0.56 5x 0.85 a --- 1.45 recommended a 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 europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81 ? 3 ? 5773 ? 3850 ncp4587/d 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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