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sgm2022 dual, low dropout, 250ma ldo regulator general description the sgm2022 is a dual, low-power, low-dropout, cmos linear voltage regulator. it operates from a 2.5v to 5.5v input voltage and delivers up to 250ma at each channel. the sgm2022 is the perfect choice for low voltage, low power applications. the ground current is 190 a (both ldo?s enabled and active) that makes this part attractive for battery operated power systems. the sgm2022 also offers low dropout voltage (250mv at 250ma output) to prolong battery life in portable electronics. separate enable pins control each individual ldo output. the en function allows the output of each regulator to be turned off independently, resulting in greatly reduced power consumption. other features include a 10na logic-controlled shutdown mode, current limit and thermal shutdown protection. the sgm2022 is available in green sot-23-6 package. it operates over an ambient temperature range of -40c to +85c. typical operation circuit out2 out1 en1 gnd 1 f 1 f on off sgm2022 en2 in output1 output2 1 f on off input 1 2 34 5 6 features ? highly accurate: 2% ? ultra-low dropout voltage: 250mv at 250ma output ? 190a no-load supply current ? thermal-overload protection ? output current limit ? 10na logic-controlled shutdown ? operating temperature range: -40 to +85 ? available in green sot-23-6 package applications cellular telephones cordless telephones pcmcia cards modems mp3 player hand-held instruments palmtop computers wireless lan portable/battery-powered equipment rev. d sg micro corp www.sg-micro.com
dual, low dropout, 250ma ldo regulator 2 sgm2022 sg micro corp www.sg-micro.com package/ordering information ordering number v out1 v out2 pin- package specified temperature range package marking package option sgm2022-ayn6/tr 2.8v 2.8v sot-23-6 -40c to +85c 2022a tape and reel, 3000 sgm2022-cyn6/tr 2.8v 3.0v sot-23-6 -40c to +85c 2022c tape and reel, 3000 sgm2022-dyn6/tr 2.8v 2.5v sot-23-6 -40c to +85c 2022d tape and reel, 3000 sgm2022-eyn6/tr 2.8v 1.8v sot-23-6 - 40c to +85c 2022e tape and reel, 3000 sgm2022-gyn6/tr 2.5v 1.8v sot-23-6 - 40c to +85c 2022g tape and reel, 3000 sgm2022-hyn6/tr 3.3v 2.5v sot-23-6 -40c to +85c 2022h tape and reel, 3000 sgm2022-iyn6/tr 3.3v 1.8v sot-23-6 - 40c to +85c 2022i tape and reel, 3000 sgm2022-kyn6/tr 3.0v 1.8v sot-23-6 -40c to +85c 2022k tape and reel, 3000 sgm2022-myn6/tr 2.8v 1.2v sot-23-6 -40 c to +85c 2022m tape and reel, 3000 sgm2022-nyn6/tr 2.8v 1.3v sot-23-6 -40c to +85c 2022n tape and reel, 3000 sgm2022-oyn6/tr 2.8v 1.5v sot-23-6 - 40c to +85c 2022o tape and reel, 3000 sgm2022-pyn6/tr 1.5v 2.8v sot-23-6 - 40c to +85c 2022p tape and reel, 3000 sgm2022-qyn6/tr 2.5v 1.5v sot-23-6 - 40c to +85c 2022q tape and reel, 3000 sgm2022-ryn6/tr 2.5v 2.8v sot-23-6 - 40c to +85c 2022r tape and reel, 3000 sgm2022-syn6/tr 1.3v 2.8v sot-23-6 - 40c to +85c 2022s tape and reel, 3000 sgm2022-tyn6/tr 1.5v 3.3v sot-23-6 -40c to +85c 2022t tape and reel, 3000 sgm2022-uyn6/tr 3.3v 3.0v sot-23-6 -40c to +85c 2022u tape and reel, 3000 sgm2022-vyn6/tr 1.8v 3.3v sot-23-6 - 40c to +85c 2022v tape and reel, 3000 sgm2022-wyn6/tr 1.2v 2.8v sot-23-6 -40c to +85c 2022w tape and reel, 3000 sgm2022-xyn6/tr 3.3v 2.8v sot-23-6 - 40c to +85c 2022x tape and reel, 3000 sgm2022-yyn6/tr 1.8v 2.8v sot-23-6 - 40c to +85c 2022y tape and reel, 3000 sgm2022-zyn6/tr 1.8v 1.8v sot-23-6 -40c to +85c 2022z tape and reel, 3000 sgm2022-aayn6/tr 1.2v 1.8v sot-23-6 -40c to +85c 2022aa tape and reel, 3000 note: order number is de fined as the follow: order number sgm2022- x y x / tr package type tape and reel n6 sot-23-6 operating temperature range y -40 to +85 output voltages a : 2.8v (output1), 2.8v (output2) c : 2.8v (output1), 3.0v (output2) d : 2.8v (output1), 2.5v (output2) . . . . . . aa : 1.2v (output1), 1.8v (output2)
dual, low dropout, 250ma ldo regulator 3 sgm2022 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 sot-23-6 ..........................................................................0.24w package thermal resistance sot-23-6, ja ............................................................... 250 /w operating temperature range............................-40c to +85c junction temperature........................................................150c storage temperature........................................-65c to +150c lead temperature (soldering, 10s).... ...................... .........260c 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.
dual, low dropout, 250ma ldo regulator 4 sgm2022 sg micro corp www.sg-micro.com pin configuration (top view) out1 out2 sot-23-6 gnd en2 en1 in 2022x 3 2 1 6 5 4 note: the location of pin 1 on the 2022x is determined by orienting the package marking as shown. pin description pin name function 1 out2 channel 2 output voltage. 2 gnd common ground. 3 en2 (1) on/off control 2. a logic low reduces the supply current to 10na. 4 en1 (1) on/off control 1. a logic low reduces the supply current to 10na. 5 in supply input. 6 out1 channel 1 output voltage. note: 1. if en1 and en2 are both low, both regulators and the reference turn off.
dual, low dropout, 250ma ldo regulator 5 sgm2022 sg micro corp www.sg-micro.com electrical characteristics (v in = v out (nominal) + 0.5v or 2.5v (whichever is greater), t a = -40c to +85c, typical values are at t a = +25c, for each ldo unless otherwise specified.) parameter symbol conditions min typ max units input voltage v in 2.5 5.5 v output voltage accuracy i out = 0.1ma, t a = +25c -2 +2 % maximum output current (3) 250 ma current limit i lim 310 500 ma ground pin current i q en = 2v, both ldos no load 190 295 a i out = 1ma 1 dropout voltage (1) i out = 250ma 250 350 mv line regulation out in out v v v ? ? ? v in = 2.5v or (v out + 0.5v) to 5.5v, i out = 1ma 0.02 0.15 %/v load regulation out load out v i v ? ? ? i out = 0.1ma to 250ma, c out = 1f 0.004 0.01 %/ma power supply rejection rate psrr i load = 50ma, c out = 1f, f = 100hz 71 db shutdown v ih 1.5 en input threshold v il v in = 2.5v to 5.5v 0.4 v t a = +25c 0.01 1 en input bias current i b(shdn) en = 0v or en = 5.5v t a = +85c 0.01 a t a = +25c 0.01 1 shutdown supply current i q(shdn) en1 = en2 = 0.4v t a = +85c 0.01 a shutdown exit delay (2) c out = 1f, no load t a = +25c 20 s thermal protection thermal shutdown temperature t shdn 160 thermal shutdown hysteresis t shdn 15 notes: 1. 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 3.3v) 2. time needed for v out to reach 95% of final value. 3. each channel provides 300ma of maximum output cu rrent when the condition of dissipating heat is good.
dual, low dropout, 250ma ldo regulator 6 sgm2022 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 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 (%) output voltage vs. input voltage 0 1 2 3 4 5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) output voltage (v) no load v out = 1.8v v out = 2.8v sgm2022-e dro po ut voltage vs. lo ad curre nt 0 50 100 150 200 250 300 0 50 100 150 200 250 load current ( ma) dr opout voltage (mv) t a = -40 t a = +25 t a = +85 v out = 2.8v ground pin current vs. temperature 150 165 180 195 210 225 240 -40 -15 10 35 60 85 temperature ( ) ground pin current ( a ) no load sgm2022-e ground pin current vs. input voltage 0 40 80 120 160 200 240 00.511.522.533.544.555.5 input voltage (v) ground pin current (a) no load sgm2022-e ground pin current vs. load current 100 150 200 250 300 350 400 0 50 100 150 200 250 load current (ma) ground pin current (a) both output loaded
dual, low dropout, 250ma ldo regulator 7 sgm2022 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. power-supply rejection ratio vs. frequency 0 10 20 30 40 50 60 70 80 90 0.01 0.1 1 10 100 1000 frequency (khz) psrr (db) c out = 10 f i load = 50ma v in = v out +1v c out = 1 f
dual, low dropout, 250ma ldo regulator 8 sgm2022 sg micro corp www.sg-micro.com application note the sgm2022 is designed specifically to work with low esr ceramic output capacitor with space-saving and performance in consideration. using a ceramic capacitor which is at least 1 f with esr > 5m ? on the sgm2022 output ensures stability. the sgm2022 still works well with output ca pacitor of other types due to the wide stable esr range. the following figure shows the curves of allowable esr range (5m ? to 200m ? ) as a function of load current for various output capacitor values. region of stable c out esr vs. load current 0.001 0.01 0.1 1 0 50 100 150 200 250 load current (ma) c out esr ( ? ) c out = 10 f stable region 0.005 c out = 1 f when ldo is used in handheld products, attention must be paid to voltage spikes which could damage sgm2022. 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 de signs. the schematic is shown below. sgm2022 4.7 f out1 2 5 vcc input en1 gnd in control 4 6 out 1 c 2 c 1 1 f bzm55b5v6 4.7 f out2 1 out 2 c 3 3 en2 control
dual, low dropout, 250ma ldo regulator 9 sgm2022 sg micro corp www.sg-micro.com package outline dimensions sot-23-6 e e1 e e1 b d a1 a2 a c l 0.2 2.59 0.99 0.95 0.69 recommended land pattern (unit: mm) 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
dual, low dropout, 250ma ldo regulator 10 sgm2022 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 sot-23-6 7 9.5 3.17 3.23 1.37 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
dual, low dropout, 250ma ldo regulator 11 sgm2022 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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