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SGM2019 low power, low dropout, rf-linear regulators general description the SGM2019 series low-power, low-noise, low-dropout, cmos linear voltage regulators operate from a 2.5v to 5.5v input voltage. they are the perfect choice for low voltage, low power applications. a low ground current makes this part attractive for battery operated power systems. the SGM2019 series also offer ultra low dropout voltage to prolong battery life in portable electronics. systems requiring a quiet voltage source, such as rf applications, will benefit from the SGM2019 series? ultra low output noise (30v rms ) and high psrr. an external noise bypass capacitor connected to the device?s bp pin can further reduce the noise level. the output voltage is preset to voltages in the range of 1.2v to 5.0v. other features include a 10na logic- controlled shutdown mode, foldback current limit and thermal shutdown protection. the SGM2019 is available in green sot-23-5 and sc70-5 packages. it operates over an ambient temperature range of -40 to +85 . applications cellular telephones cordless telephones pcmcia cards modems mp3 player hand-held instruments palmtop computers electronic planners portable/battery-powered equipment features ? low output noise ? low dropout voltage ? thermal-overload protection ? output current limit ? high psrr (74db at 1khz) ? 10na logic-controlled shutdown ? available in multiple output voltage versions ? fixed outputs of 1.2v, 1.5v, 1.8v, 2.5v, 2.6v, 2.8v, 2.85v, 3.0v and 3.3v ? adjustable output from 1.2v to 5.0v ? -40 to +85 operating temperature range ? available in green sc70-5 and sot-23-5 packages product name structure SGM2019 - x x x g / tr operating temperature range output voltages package type green product tape and reel c5 sc70-5 n5 sot-23-5 y -40 to +85 1.2 1.2v 1.5 1.5v 1.8 1.8v 2.5 2.5v 2.6 2.6v 2.8 2.8v 2.85 2.85v 3.0 3.0v 3.3 3.3v adj adjustable rev. c sg micro corp www.sg-micro.com
low power, low dropout, rf-linear regulators 2 SGM2019 sg micro corp www.sg-micro.com pin configurations (top view) 1 2 3 4 5 out in sot-23-5/sc70-5 gnd en bp/fb yjxx notes: 1. the location of pin 1 on the yjxx is determined by orienting the package marking as shown. 2. ?xx? is the output voltage code. (for example: when the output voltage is 1.8v, it is expressed as 18.) caution this integrated circuit can be damaged by esd if you don?t pay attention to esd protection. sgmicro recommends that all integrated circuits be handled with appropriate precautions. failure to observe proper handling and installation procedures can cause damage. esd damage can range from subtle performance degradation to complete device failure. precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. sgmicro reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. please contac t sgmicro sales office to get the latest datasheet. absolute maximum ratings in to gnd................................................................. -0.3v to 6v output short-circuit duration ..........................................infinite en to gnd............................................................... -0.3v to v in out, bp/fb to gnd................................... -0.3v to (v in + 0.3v) power dissipation, p d @ t a = 25 sot-23-5.............................................................................0.4w sc70-5 ...............................................................................0.3w package thermal resistance sot-23-5, ja ................................................................260 /w sc70-5, ja ....................................................................330 /w operating temperature range. ...........................-40 to +85 junction temperature........................................................ 150 storage temperature range..............................-65 to +150 lead temperature (soldering, 10s)...................................260 esd susceptibility hbm.............. .......................... .................. ............. .......... 4000v mm......................... ..................... ............... ................. ....... 400v note: stresses beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. pin description pin sc70-5/sot-23-5 name function 1 in regulator input. supply voltage can range from 2.5v to 5.5v. bypass with a 1 f capacitor to gnd. 2 gnd ground. 3 en shutdown input. a logic low reduces the supply current to 10na. connect to in for normal operation. bp reference-noise bypass (fixed voltage version only). bypass with a low-leakage 0.01 f ceramic capacitor for reduced noise at the output. 4 fb adjustable voltage version only. this is used to set the output voltage of the device. 5 out regulator output.
low power, low dropout, rf-linear regulators 3 SGM2019 sg micro corp www.sg-micro.com electrical characteristics (v in = v out (nominal) + 0.5v (1) , full = -40 to +85 , unless otherwise noted.) parameter symbol conditions temp min typ max units input voltage v in +25 2.5 5.5 v output voltage accuracy (1) i out = 0.1ma +25 -2.5 2.5 % sot-23-5 300 v out = 1.2v, 1.5v, 1.8v, sc70-5 150 maximum output current (1) v out > 2v, sc70-5 +25 250 ma current limit (1) i lim +25 310 500 ma ground pin current i q no load, en = 2v +25 100 200 a i out = 1ma 0.9 dropout voltage (2) i out = 300ma +25 270 400 mv line regulation (1) v lnr v in = 2.5v or (v out + 0.5v) to 5.5v, i out = 1ma +25 0.02 0.05 %/v i out =0.1ma to 300ma, c out = 1f, v out > 2v 0.002 0.005 load regulation v ldr i out =0.1ma to 300ma, c out = 1f, v out 2v +25 0.004 0.008 %/ma output voltage noise e n f = 10hz to 100khz, c bp = 0.01f, c out = 10f +25 30 v rms f = 217hz +25 77 db power supply rejection ratio psrr c bp = 0.1 f, i load = 50ma, c out = 1 f, v in = v out +1v f = 1khz +25 74 db shutdown (3) v ih full 1.5 en input threshold v il v in = 2.5v to 5.5v, v en = -0.3v to v in full 0.3 v +25 0.01 1 en input bias current i b(shdn) en = 0v or en = 5.5v full 0.01 a shutdown supply current i q(shdn) en = 0.4v full 0.01 a shutdown exit delay (4) c bp = 0.01 f, c out = 1 f, no load +25 30 s thermal protection thermal shutdown temperature t shdn 150 thermal shutdown hysteresis t shdn 15 notes: 1. v in = v out (nominal) + 0.5v or 2.5v, whichever is greater. 2. the dropout voltage is defined as v in - v out , when v out is 100mv below the value of v out for v in = v out + 0.5v. (only applicable for v out = +2.5v to +5.0v.) 3. v en = -0.3v to v in 4. time needed for v out to reach 90% of final value.
low power, low dropout, rf-linear regulators 4 SGM2019 sg micro corp www.sg-micro.com typical application circuit input 2.5v to 5.5v in out bp gnd c in 1 f c bp 0.01 f c out 1 f on off SGM2019 en output shutdown exit delay ( s) v out = 2.8v, v in = 3.3v, en = 0v to 2v psrr (db) at 217hz v out = 2.8v, v in = v out + 1v c bp (nf) i load = 50ma i load = 150ma i load = 300ma i load = 50ma i load = 150ma i load = 300ma none 21.5 21.5 21 71.1 64.4 55.0 0.001 21.5 21.5 22 71.1 64.6 55.1 0.01 22 22.5 22.5 71.6 64.7 55.2 0.1 22.5 23 23 71.7 64.8 55.4 1 25 27 28.5 72.1 65.2 55.9 10 30 35 39 74.3 68.8 59.6 100 265 280 300 77.0 73.7 63.1
low power, low dropout, rf-linear regulators 5 SGM2019 sg micro corp www.sg-micro.com typical application circuit output input 2.5v to 5.5v in out en fb gnd c in 1 f on off sgm 2019-adj r 1 r 2 c out 1 f standard 1% resistor values for common output voltages of adjustable voltage version v out (v) r 1 (k ) r 2 (k ) 1.2 0 63.4 1.5 10.5 42.2 1.8 34 63.4 2.8 84.5 63.4 3.0 63.4 42.2 3.3 73.2 42.2 3.6 84.5 42.2 4.2 105 42.2 note: v out = (r 1 + r 2 )/ r 2 1.207
low power, low dropout, rf-linear regulators 6 SGM2019 sg micro corp www.sg-micro.com typical performance characteristics v in = v out (nominal) + 0.5v or 2.5v (whichever is greater), c in = 1 f, c out = 1 f, c bp = 0.01 f, t a = +25 , unless otherwise noted.
low power, low dropout, rf-linear regulators 7 SGM2019 sg micro corp www.sg-micro.com typical performance characteristics v in = v out (nominal) + 0.5v or 2.5v (whichever is greater), c in = 1 f, c out = 1 f, c bp = 0.01 f, t a = +25 , unless otherwise noted. power-supply rejection ratio vs. frequency 20 40 60 80 100 0.01 0.1 1 10 100 1000 frequency (khz) psrr (db) c bp = 0.1 f i load = 50ma v in = v out + 1v v out = 1.8v c out = 1 f c out = 10 f current limit vs. temperature 200 300 400 500 600 700 800 -40 -15 10 35 60 85 temperature ( ) current limit (ma) SGM2019-1.8yn5g output voltage vs. load current 1.5 1.6 1.7 1.8 1.9 2 0 50 100 150 200 250 300 load current (ma) output voltage (v) SGM2019-1.8yn5g power-supply rejection ratio vs. frequency 20 40 60 80 100 0.01 0.1 1 10 100 1000 frequency (khz) psrr (db) c bp = 0.1 f i load = 50ma v in = v out + 1v v out = 2.8v c out = 1 f c out = 10 f current limit vs. temperature 200 300 400 500 600 700 800 -40 -15 10 35 60 85 temperature ( ) current limit (ma) SGM2019-2.8yn5g output voltage vs. load current 2.5 2.6 2.7 2.8 2.9 3 0 50 100 150 200 250 300 load current (ma) output voltage (v) SGM2019-2.8yn5g
low power, low dropout, rf-linear regulators 8 SGM2019 sg micro corp www.sg-micro.com typical performance characteristics v in = v out (nominal) + 0.5v or 2.5v (whichever is greater), c in = 1 f, c out = 1 f, c bp = 0.01 f, t a = +25 , unless otherwise noted. ground pin current vs.temperature 40 60 80 100 120 140 -40 -15 10 35 60 85 temperature ( ) ground pin current ( a) no load SGM2019-1.8yn5g ground pin current vs. load current 60 80 100 120 140 160 180 200 0 50 100 150 200 250 300 load current (ma) ground pin current (a) SGM2019-1.8yn5g output voltage accuracy vs. temperature -0.6 -0.4 -0.2 0 0.2 0.4 0.6 -40 -15 10 35 60 85 temperature ( ) output voltage accuracy (%) SGM2019-1.8yn5g ground pin current vs.temperature 40 60 80 100 120 140 -40 -15 10 35 60 85 temperature ( ) ground pin current ( a) no load SGM2019-2.8yn5g ground pin current vs. load current 60 80 100 120 140 160 180 200 0 50 100 150 200 250 300 load current (ma) ground pin current (a) SGM2019-2.8yn5g output voltage accuracy vs. temperature -0.6 -0.4 -0.2 0 0.2 0.4 0.6 -40 -15 10 35 60 85 temperature ( ) output voltage accuracy (%) SGM2019-2.8yn5g
low power, low dropout, rf-linear regulators 9 SGM2019 sg micro corp www.sg-micro.com typical performance characteristics v in = v out (nominal) + 0.5v or 2.5v (whichever is greater), c in = 1 f, c out = 1 f, c bp = 0.01 f, t a = +25 , unless otherwise noted. ground pin current vs.input voltage 0 20 40 60 80 100 120 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) ground pin current (a) SGM2019-1.8yn5g no load output voltage vs. input voltage 0 0.4 0.8 1.2 1.6 2 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) output voltage (v) SGM2019-1.8yn5g no load dropout voltage vs. load current 0 50 100 150 200 250 300 350 400 0 50 100 150 200 250 300 load current (ma) dropout voltage (mv) SGM2019-2.8yn5g t a = -40 t a = +85 t a = +25 ground pin current vs.input voltage 0 20 40 60 80 100 120 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) ground pin current (a) SGM2019-2.8yn5g no load output voltage vs. input voltage 0 0.8 1.6 2.4 3.2 4 00.511.522.533.544.555.5 input voltage (v) output voltage (v) SGM2019-2.8yn5g no load
low power, low dropout, rf-linear regulators 10 SGM2019 sg micro corp www.sg-micro.com typical performance characteristics v in = v out (nominal) + 0.5v or 2.5v (whichever is greater), c in = 1 f, c out = 1 f, c bp = 0.01 f, t a = +25 , unless otherwise noted. shutdown exit delay vs. bypass capacitor 0 50 100 150 200 250 300 350 400 0.001 0.01 0.1 1 10 100 bypass capacitor (nf) shutdown exit delay ( s) i load = 300ma i load = 150ma v out = 2.8v v in = 3.3v en = 0v to 2v i load = 50ma psrr (217hz) vs. bypass capacitor 30 40 50 60 70 80 90 100 110 120 0.001 0.01 0.1 1 10 100 bypass capacitor (nf) psrr (db) i load = 300ma i load = 150ma v out = 2.8v v in = v out + 1v i load = 50ma
low power, low dropout, rf-linear regulators 11 SGM2019 sg micro corp www.sg-micro.com application note when ldo is used in handheld products, attention must be paid to voltage spikes which could damage SGM2019. in such applications, voltage spikes will be generated at charger interface and v bus pin of usb interface when charger adapters and usb equipments are hot-plugged. besides this, handheld products will be tested on the production line without battery. test engineer will apply power from the connecto r pin which connects with positive pole of the battery. when external power supply is turned on suddenly, the volt age spikes will be generated at the battery connector. the voltage spikes will be very high, and it always exceeds the absolute maximum input voltage (6.0v) of ldo. in order to get robust design, design engineer needs to clear up this voltage spike. zener diode is a cheap and effective solution to eliminate such voltage spike. for example, bzm55b5v6 is a 5.6v small package zener diode which can be used to remove voltage spikes in cell phone designs. the schematic is shown below. SGM2019 4 4.7f v out 2 1 vcc input en gnd bp in control 3 5 v out c 2 0.01f c 1 1f bzm55b5v6
low power, low dropout, rf-linear regulators 12 SGM2019 sg micro corp www.sg-micro.com expanded ordering information model v out (v) pin- package ordering number package marking package option SGM2019-1.2 1.2v sot-23-5 SGM2019-1 .2yn5g/tr yj12 tape and reel, 3000 SGM2019-1.2 1.2v sc70-5 SGM2019-1.2yc5g/tr yj12 tape and reel, 3000 SGM2019-1.5 1.5v sot-23-5 SGM2019-1 .5yn5g/tr yj15 tape and reel, 3000 SGM2019-1.5 1.5v sc70-5 SGM2019-1.5yc5g/tr yj15 tape and reel, 3000 SGM2019-1.8 1.8v sot-23-5 SGM2019-1 .8yn5g/tr yj18 tape and reel, 3000 SGM2019-1.8 1.8v sc70-5 SGM2019-1.8yc5g/tr yj18 tape and reel, 3000 SGM2019-2.5 2.5v sot-23-5 SGM2019-2 .5yn5g/tr yj25 tape and reel, 3000 SGM2019-2.5 2.5v sc70-5 SGM2019-2.5yc5g/tr yj25 tape and reel, 3000 SGM2019-2.6 2.6v sot-23-5 SGM2019-2 .6yn5g/tr yj26 tape and reel, 3000 SGM2019-2.6 2.6v sc70-5 SGM2019-2.6yc5g/tr yj26 tape and reel, 3000 SGM2019-2.8 2.8v sot-23-5 SGM2019-2 .8yn5g/tr yj28 tape and reel, 3000 SGM2019-2.8 2.8v sc70-5 SGM2019-2.8yc5g/tr yj28 tape and reel, 3000 SGM2019-2.85 2.85v sot-23-5 SGM2019-2 .85yn5g/tr yj2j tape and reel, 3000 SGM2019-2.85 2.85v sc70-5 SGM2019-2.85yc5g/tr yj2j tape and reel, 3000 SGM2019-3.0 3.0v sot-23-5 SGM2019-3 .0yn5g/tr yj30 tape and reel, 3000 SGM2019-3.0 3.0v sc70-5 SGM2019-3.0yc5g/tr yj30 tape and reel, 3000 SGM2019-3.3 3.3v sot-23-5 SGM2019-3 .3yn5g/tr yj33 tape and reel, 3000 SGM2019-3.3 3.3v sc70-5 SGM2019-3.3yc5g/tr yj33 tape and reel, 3000 SGM2019-adj adjustable sot-23-5 SGM2019-adjyn5g/tr yjaa tape and reel, 3000 SGM2019-adj adjustable sc70-5 SGM2019-adjyc5g/tr yjaa tape and reel, 3000
low power, low dropout, rf-linear regulators 13 SGM2019 sg micro corp www.sg-micro.com package outline dimensions sc70-5 e e1 e1 e d b a a2 a1 l c 0.20 l1 recommended land pattern (unit: mm) 1.9 0.65 1.3 0.75 0.4 dimensions in millimeters dimensions in inches symbol min max min max a 0.900 1.100 0.035 0.043 a1 0.000 0.100 0.000 0.004 a2 0.900 1.000 0.035 0.039 b 0.150 0.350 0.006 0.014 c 0.080 0.150 0.003 0.006 d 2.000 2.200 0.079 0.087 e 1.150 1.350 0.045 0.053 e1 2.150 2.450 0.085 0.096 e 0.65 typ 0.026 typ e1 1.300 bsc 0.051 bsc l 0.525 ref 0.021 ref l1 0.260 0.460 0.010 0.018 0 8 0 8
low power, low dropout, rf-linear regulators 14 SGM2019 sg micro corp www.sg-micro.com package outline dimensions sot-23-5 e e1 e e1 b d a1 a2 a c l 0.2 recommended land pattern (unit: mm) 1.90 2.59 0.99 0.69 0.95 dimensions in millimeters dimensions in inches symbol min max min max a 1.050 1.250 0.041 0.049 a1 0.000 0.100 0.000 0.004 a2 1.050 1.150 0.041 0.045 b 0.300 0.500 0.012 0.020 c 0.100 0.200 0.004 0.008 d 2.820 3.020 0.111 0.119 e 1.500 1.700 0.059 0.067 e1 2.650 2.950 0.104 0.116 e 0.950 bsc 0.037 bsc e1 1.900 bsc 0.075 bsc l 0.300 0.600 0.012 0.024 0 8 0 8
low power, low dropout, rf-linear regulators 15 SGM2019 sg micro corp www.sg-micro.com tape and reel information note: the picture is only for reference. please make the object as the standard. key parameter list of tape and reel package type reel diameter reel width w1 (mm) a0 (mm) b0 (mm) k0 (mm) p0 (mm) p1 (mm) p2 (mm) w (mm) pin1 quadrant sc70-5 7 9.5 2.25 2.55 1.20 4.0 4.0 2.0 8.0 q3 sot-23-5 7 9.5 3.2 3.2 1.4 4.0 4.0 2.0 8.0 q3 reel width (w1) reel diameter reel dimensions tape dimensions direction of feed p2 p0 w p1 a0 k0 b0 q1 q2 q4 q3 q3 q4 q2 q1 q3 q4 q2 q1
low power, low dropout, rf-linear regulators 16 SGM2019 sg micro corp www.sg-micro.com carton box dimensions note: the picture is only for reference. please make the object as the standard. key parameter list of carton box reel type length (mm) width (mm) height (mm) pizza/carton 7 (option) 368 227 224 8 7 442 410 224 18

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