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sgm2031 low power, low dropout, rf - linear regulators general description the sgm2031 series low-power, low-dropout, cmos linear voltage regulators operate from a 2.5v to 5.5v input voltage in an ultra small package. 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 sgm2031 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 sgm2031 series? low output noise and high psrr. other features include a 10na logic-controlled shutdown mode, foldback current limit and thermal shut-down protection. the sgm2031 is available in green utdfn-11-4l package. it operates over an ambient temperature range of -40c to +85c. typical application output input 2.5v to 5.5v in out gnd c in 1 f c out 1 f sgm2031 en on off 3 2 41 features ? low dropout voltage ? thermal-overload protection ? output current limit ? high psrr (72db 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 ? -40 to +85 operating temperature range ? available in green utdfn-11-4l package applications cellular telephones cordless telephones phs telephones pcmcia cards modems mp3 player hand-held instruments palmtop computers electronic planners portable/battery-powered equipment rev. b. 1 sg micro corp www.sg-micro.com
low power, low dropout, rf-linear regulators 2 sgm2031 sg micro corp www.sg-micro.com package/ordering information model v out (v) pin- package ordering number package marking package option sgm2031-1.2 1.2v utdfn-11-4l sgm2031-1.2yudh4g/tr 64 tape and reel, 10000 sgm2031-1.5 1.5v utdfn-11-4l sgm2031-1.5yudh4g/tr 9f tape and reel, 10000 sgm2031-1.8 1.8v utdfn-11-4l sgm2031-1.8yudh4g/tr 51 tape and reel, 10000 sgm2031-2.5 2.5v utdfn-11-4l sgm2031-2.5yudh4g/tr a0 tape and reel, 10000 sgm2031-2.6 2.6v utdfn-11-4l sgm2031-2.6yudh4g/tr b8 tape and reel, 10000 sgm2031-2.8 2.8v utdfn-11-4l sgm2031-2.8yudh4g/tr 52 tape and reel, 10000 sgm2031-2.85 2.85v utdfn-11-4l sgm2031-2.85yudh4g/tr b9 tape and reel, 10000 sgm2031-3.0 3.0v utdfn-11-4l sgm2031-3.0yudh4g/tr 53 tape and reel, 10000 sgm2031-3.3 3.3v utdfn-11-4l sgm2031-3.3yudh4g/tr 57 tape and reel, 10000 note: order number is defined as the follow: order number sgm2031 - x x x g / tr operating temperature range output voltages package type green product tape and reel udh4 utdfn-11-4l 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
low power, low dropout, rf-linear regulators 3 sgm2031 sg micro corp www.sg-micro.com absolute maximum ratings in to gnd.................................................................. -0.3v to 6v output short-circuit duration ...........................................infinite en to gnd................................................................ -0.3v to v in out to gnd............................................... -0.3v to (v in + 0.3v) power dissipation, p d @ t a = 25 utdfn-11-4l............................................................... 400mw package thermal resistance utdfn-11-4l, ja ...................... ............ ............ .........280 /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 s pecifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. 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 contact sgmicro sales office to get the latest datasheet.
low power, low dropout, rf-linear regulators 4 sgm2031 sg micro corp www.sg-micro.com pin configuration (top view) gnd out 12 43 in en utdfn-11-4l nc pin description pin name function 1 out regulator output. 2 gnd ground. 3 en shutdown input. a logic low reduces the supply current to 10na. connect to in for normal operation. 4 in regulator input. supply voltage can range from 2.5v to 5.5v. bypass with a 1 f capacitor to gnd. exposed pad nc no connection.
low power, low dropout, rf-linear regulators 5 sgm2031 sg micro corp www.sg-micro.com electrical characteristics (v in = v out (nominal) + 0.5v (1) , full = -40c to +85c, 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 -3 +3 % maximum output current (1), (5) +25 250 ma current limit (1) i lim +25 260 ma ground pin current i q no load, en = 2v +25 95 200 a i out = 1ma 0.9 dropout voltage (2) i out = 250ma +25 230 400 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 250ma, c out = 1f, v out > 2v 0.002 0.005 load regulation v ldr i out = 0.1ma to 250ma, c out = 1f, v out 2v +25 0.004 0.008 %/ma output voltage noise e n f = 10hz to 100khz, c out = 10f +25 140 v rms f = 217hz +25 72 db power supply rejection ratio psrr i load = 50ma, c out = 1 f, v in = v out + 1v f = 1khz +25 72 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 and en = 5.5v full 0.01 a +25 0.01 1 shutdown supply current i q(shdn) en = 0.4v full 0.01 a shutdown exit delay (4) c out = 1 f, no load +25 10 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. 5. maximum output current is affected by pcb layout, size of metal trace, the thermal conduction path between metal layers, operating temperature and the other environment factor of system.
low power, low dropout, rf-linear regulators 6 sgm2031 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, t a = +25 , unless otherwise noted. current limit vs. temperature 200 300 400 500 600 700 800 -40 -15 10 35 60 85 temperature ( ) current limit (ma) sgm2031-2.8yudh4g ground pin current vs.input voltage 0 20 40 60 80 100 120 00.511.522.533.544.555.5 input voltage (v) ground pin current (a) sgm2031-2.8yudh4g no load ground pin current vs.temperature 40 60 80 100 120 140 -40 -15 10 35 60 85 temperature ( ) ground pin current ( a) no load sgm2031-2.8yudh4g 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) t a = +25 t a = +85 sgm2031-2.8yudh4g t a = -40 ground pin current vs. load current 80 100 120 140 160 180 200 220 0 50 100 150 200 250 300 load current (ma) ground pin current (a) sgm2031-2.8yudh4g 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 (%) sgm2031-2.8yudh4g
low power, low dropout, rf-linear regulators 7 sgm2031 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, t a = +25 , unless otherwise noted. 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) sgm2031-2.8yudh4g power-supply rejection ratio vs. frequency 0 20 40 60 80 100 0.01 0.1 1 10 100 1000 frequency (khz) psrr (db) i load = 50ma v in = 3.8v to 3.9v v out = 2.8v c out = 1 f c out = 10 f output voltage vs. input voltage 0 0.8 1.6 2.4 3.2 4 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) output voltage (v) sgm2031-2.8yudh4g no load
low power, low dropout, rf-linear regulators 8 sgm2031 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, t a = +25 , unless otherwise noted.
low power, low dropout, rf-linear regulators 9 sgm2031 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 sgm2031. 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. sgm2031 4.7f v out 2 4 vcc input en gnd in control 3 1 v out c 2 c 1 1f bzm55b5v6
low power, low dropout, rf-linear regulators 10 sgm2031 sg micro corp www.sg-micro.com package outline dimensions utdfn-11-4l top view bottom view d e d1 e1 e l b f recommended land pattern (unit: mm) 0.25 0.47 0.22 1.30 0.65 0.48 0 .4 8 4 5 3-c0.18 a a2 a1 side view 0.40 0.2 dimensions in millimeters symbol min mod max a 0.500 0.550 0.600 a1 0.000 0.050 a2 0.152 ref d 0.950 1.000 1.050 d1 0.450 0.500 0.550 e 0.950 1.000 1.050 e1 0.450 0.500 0.550 b 0.175 0.225 0.275 e 0.625 bsc f 0.195 ref l 0.200 0.250 0.300
low power, low dropout, rf-linear regulators 11 sgm2031 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 utdfn-11-4l 7 9.0 1.2 1.2 0.6 2.0 4.0 2.0 8.0 q1 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 12 sgm2031 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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