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AIC1702 350ma, 3 a ultra low quiescent curent ldo voltage regulator analog integrations corporation 3a1, no.1 li-hsin rd. i, science pa rk, hsinchu 300, taiwan ds-1702g-02 20120327 tel: 886-3-5772500 fax: 886-3-5772510 www. analog.com.tw 1 ? features ? input voltage 2.0v~6.8v ? output voltage 0.8v~5.0v ? 550mv typical dropout voltage at 350ma load current and 3.3v output voltage ? ultra low quiescent current: 3 a ? line regulation, typical: 2mv ? load regulation, typical: 2mv ? current limiting and thermal protection ? stable with 1 f input & output ceramic capaci- tor ? available in sot-23, sot-23-5, sot-89, dfn-6 2mmx2mm ? applications ? smoke detectors ? battery-powered alarms / smart battery packs ? pdas / handy terminals ? real-time clocks/ cmos backup pow ? laptop, palmtops, notebook computer ? general description the AIC1702 is an ultra low quiescent current, low dropout voltage regulator. the output voltages are of 0.8v, 1.0v, 1.2v, 1.5v, 1.8v, 2.0v, 2.5v, 3.0v, 3.3v and 5v. dropout voltage of 200mv is guaranteed at 350ma output current and 3.3v output voltage. the low quiescent and wide input voltage range make this device ideal for portable microprocessor applications. the AIC1702 requires output ceramic capacitor of a minimum 1 f for stability. built-in output current limiting and thermal limiting provide maximal protection to the AIC1702 against fault conditions. ? typical application circuit
AIC1702 2 ? ordering information pin configuration sot-23 top view 1: gnd 2: vout 3: vin example : AIC1702-18gu3tr ? 1.8v output voltage, green sot-23 package tape & reel packing type packi ng type tr: tape & reel bg: bag package t ype u3: sot-23 x3 : sot-89 da: dfn-6 (2*2) g: green package ou tput voltage 08: 0.8v 10: 1.0v 12: 1.2v 15: 1.5v 18: 1.8v 20: 2.0v 25: 2.5v 30: 3.0v 33: 3.3v 50: 5.0v (of a unit of 0.1v within 0.8~5.0v, additional vo lta ge version s a re available on demand) ai c1702 -xx x xx xx dfn-6 (2mmx2mm) top view nc 6 4 5 gnd nc 1 3 2 vin nc vout sot-89 top view 1: gnd 2: vin 3: vout
AIC1702 3 pin configuration example : AIC1702h-18gv5tr ? 1.8v output voltage, chip enable high green sot-23-5 package tape & reel packing type packi ng type tr: tape & reel bg: bag package t ype v5 : sot-23-5 g: green package ou tput voltage 08: 0.8v 10: 1.0v 12: 1.2v 15: 1.5v 18: 1.8v 20: 2.0v 25: 2.5v 30: 3.0v 33: 3.3v 50: 5.0v (of a unit of 0.1v within 0.8~5.0v, additional vo lta ge version s a re available on demand) enabl e type l: ch ip ena ble low h: chip enable high AIC1702x -xx x xx xx sot-23-5 top view 1: vin 2: gnd 3: en 4:nc 5:vout
AIC1702 4 ? absolute maximum ratings input vo ltage ....................................................................................................................................... 7v en pin voltage................................................................................................................. ................... 7v operating temperat ure r ange ............................................................................................ - 40oc~85 oc maximum junction temperat ure .................................................................................................. 1 50oc storage temperatur e range ............................................................................................. -65oc~150oc lead temperature (sol dering, 10 sec) ......................................................................................... 26 0oc thermal resistance (junction to case) sot- 23 ............................................................... 115o c /w sot-89 ................................................................. 45oc /w dfn-6 ................................................................... 30oc /w thermal resistance (junction to ambient) sot- 23 ............................................................... 250o c /w (assume no ambient airflow, no heat sink) so t-89 ............................................................... 160oc /w dfn-6 ................................................................. 165oc /w absolute maximum ratings are those values beyond which the life of a device may be impaired.
AIC1702 5 ? electrical characteristics (v in =v out +1v, c in =c out =1 f, t a =25 ? c, unless otherwise specified.) (note1) parameter conditions symbol min. typ. max. units operating voltage v in 2.0 6.8 v output voltage accuracy v out R 1.0v, v in = v out + 1.0v v out < 1.0v, v in = 2.0v v out -2.0 +2.0 % line regulation i out = 1ma, (note2) ? v lir 2 15 mv load regulation i out =1ma~350ma ? v lor 2 20 mv dropout voltage v out = 3.3v, i out =350ma v drop 550 mv v out R 1.5v , v in = v out + 1.0v i il 400 500 ma current limit v out < 1.5v, v in = 2.5v i il 350 ma short circuit current v out =0v (note 3) i short 350 ma output voltage temperature coefficient -40c Q t a Q 125c tc 100 ppm/c i out =1ma 3 6 a gnd pin current i out =350ma (note 3) i gnd 3 6 a shutdown standby current v en =0 or v en =v in i stby 0.2 a ripple rejection f=1khz, c out =1 f psrr 40 db shutdown pin current v en = v in Q 6.8v or gnd i en 0 100 na shutdown exit delay time i out = 30ma ? t 0.5 ms max output discharge resis- tance to gnd during shut- down rdson_c lmp 20 40 high threshold v enh 1.6 v v en threshold low threshold v enl 0.4 v thermal shutdown tempera- ture t sd 135 thermal shutdown hystere- sis ? t sd 25 note 1: specifications are production tested at t a =25c. specifications over the -40c to 85c operating temperature range are assured by design, characte rization and correlation with statistical quality controls (sqc). note 2 : v out R 1.0v, v in = v out + 1.0v to 6.8v v out < 1.0v, v in = 2.0v to 6.8v note 3 : v out R 1.5v, v in = v out + 1.0v v out < 1.5v, v in = 2.5v
AIC1702 6 ? typical performance characteristics -40-20 0 20406080100120 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 v out =3.3v, v in =5.0v v out =5.0v, v in =6.0v v out =1.2v, v in =3.3v output voltage variation (%) temperature ( o c) -40-20 0 20406080100120 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 v out =5.0v, v in =6.0v v out =3.3v, v in =5.0v v out =1.2v, v in =3.3v quiescent current ( ? a) temperature ( o c) fig.1 output voltage variation vs. temperature fig.2 quiescent current vs. temperature 234567 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2 v out =1.2v v out =5.0v v out =3.3v quiescent current ( ? a) input voltage (v) 0 50 100 150 200 250 300 350 2.6 2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2 v out =5.0v, v in =6.0v v out =3.3v, v in =5.0v v out =1.2v, v in =3.3v ground current ( ? a) loading current (ma) fig.3 quiescent current vs. input voltage fig.4 ground current vs. loading current -40 -20 0 20 40 60 80 100 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 loading current = 350ma v out =5.0v v out =3.3v dropout voltage (v) temperature ( o c) 0 50 100 150 200 250 300 350 0.0 0.1 0.2 0.3 0.4 0.5 0.6 v out =5.0v v out =3.3v dropout voltage (v) loading current (ma) fig.5 dropout voltage vs. temperature fig.6 dropout voltage vs. loading current
AIC1702 7 ? typical performance characteristics (continued) -40-200 20406080 0.40 0.45 0.50 0.55 0.60 0.65 v out =5.0v, v in =6.0v v out =3.3v, v in =5.0v v out =1.2v, v in =3.3v current limit (ma) temperature ( o c) 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 400 420 440 460 480 500 520 540 560 580 600 v out =1.2v v out =5.0v v out =3.3v current limit (ma) input voltage (v) fig.7 current limit vs. temperature fig.8 current limit vs. input voltage v out =1.2v i out v in =3.3v i load =10ma to 350ma v out =1.2v i out v in =3.3v i load =1ma to 50ma fig.9 load transient response at v in =3.3v, v out =1.2v fig.10 load transient response at v in =3.3v, v out =1.2v v out =3.3v i out v in =5.0v i load =10ma to 350ma v out =3.3v i out v in =5.0v i load =1ma to 50ma fig.11 load transient response at v in =5.0v, v out =3.3v fig.12 load transient response at v in =5.0v, v out =3.3v
AIC1702 8 ? typical performance characteristics (continued) v out =5.0v i out v in =6.0v i load =10ma to 350ma v out =5.0v i out v in =6.0v i load =1ma to 50ma fig.13 load transient response at v in =6.0v, v out =5.0v fig.14 load transient response at v in =6.0v, v out =5.0v i load =10ma v in =2.0v to 3.0v v out =1.2v v in i load =10ma v in =4.0v to 5.0v v out =1.2v v in fig.15 line transient response at v out =1.2v, i out =10ma fig.16 line transient response at v out =1.2v, i out =10ma i load =10ma v in =4.5v to 5.5v v out =3.3v v in i load =10ma v in =5.5v to 6.0v v out =5.0v v in fig.17 line transient response at v out =3.3v, i out =10ma fig.18 line transient response at v out =5.0v, i out =10ma
AIC1702 9 ? typical performance characteristics (continued) 10 100 1k 10k 100k 1m -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 i load =350ma i load =150ma i load =1ma v out =3.3v v in =5.0v c in =c out =1 ? f psrr (db) frequency (hz) 10 100 1k 10k 100k 1m -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 i load =350ma i load =150ma i load =1ma v out =1.2v v in =3.3v c in =c out =1 ? f psrr (db) frequency (hz) fig 19. psrr vs. frequency fig 20. psrr vs. frequency v out =1.2v i load =150ma v en (active low) v in =3.3v v out =3.3v i load =150ma v in =5.0v v en (active high) fig.21 start-up waveform at v out =1.2v, i out =150ma fig.22 start-up waveform at v out =3.3v, i out =150ma v out =5.0v i load =150ma v in =6.0v v en (active high) v out i out (0,0) 1v/div 100ma/div v out =3.3v fig.23 start-up waveform at v out =5.0v, i out =150ma fig.24 current foldback at v in =5.0v, v out =3.3v
AIC1702 10 ? block diagram reference voltage error amp + - enable shutdown logic current limit v in v out en/en gnd reference voltage error amp + - enable shutdown logic current limit v in v out en/en gnd ? pin description v in pin ? power supply input pin. bypass with a 1f ceramic capacitor to gnd v out pin ? regulator output pin. sources up to 350ma. en pin ? chip enable (active high). this pin isn?t allowed to float. en pin ? chip enable (active low). this pin isn?t allowed to float. gnd pin ? ground.
AIC1702 11 ? application information the AIC1702 is a high performance linear regulator that provides low-dropout voltage and low quiescent- current. the device is available in a fixed output voltages ranging from 0.8v to 5.0v, and the device can supply loads up to 350ma. capacitor selection linear regulators require i nput and output capacitors to maintain stability. input capacitor with a 1 ? f, output capacitor with a 1 ? f ceramic output capacitor is recommended. when choosing the input and output ceramic capacitors, x5r and x7r types are recommended because they retain their capacitance over wider ranges of voltage and temperature than other types. current limit the AIC1702 includes a current limiter, which monitors and controls the maximum output current. if the output is overloaded or shorted to ground, this can protect the device from being damaged. dropout voltage the minimum input-output voltage differential (dropout) determines the lowest usable supply voltage. the dropout voltage is a function of drain-to-source on resistance multiplied by the load current. thermal protection the AIC1702 includes a thermal-limiting circuit, which is designed to protect the device against overload condition. when the junction temperature exceeds t j =135oc, the thermal-limiting circuit turns off the pass transistor and allows the ic to cool. for continuous load condition, maximum rating of junction temperature must not be exceeded. power dissipation the maximum power dissipation of AIC1702 depends on the thermal resistance of its case and circuit board, the temperature difference between the die junction and ambient air, and the rate of airflow. the rate of temperature rise is greatly affected by the mounting pad configuration on the pcb, the board material, and the ambient temperature. when the ic mounting with good thermal conductivity is used, the junction temperature will be low even when large power dissipation applies. the power dissipation across the device is p = i out (v in -v out ) the maximum power dissipation is: ja a max-j max r )t-(t p ? where t j-max is the maximum allowable junction temperature (135 ? c), and t a is the ambient temperature suitable in application. as a general rule, the lower temperature is, the better reliability of the device is. so the pcb mounting pad should provide maximum thermal conductivity to maintain low device temperature. ? application circuit
AIC1702 12 ? physical dimensions (unit: mm) ? sot-23 package outline drawing c a a2 b with plating view b l1 l seating plane gauge plane 0.25 a1 section a-a base metal e1 e d e aa e1 see view b note: 1. refer to jedec mo-178. 2. dimension "d" does not include mold flash, protrus ions or gate burrs. mold flash, protrusion or gate bur rs shall not exceed 10 mil per side. 3. dimension "e1" does not include inter-lead flash o r protrusions. 4. controlling dimension is millimeter, converted inc h dimensions are not necessarily exact. 0 0.90 0.30 1.50 2.60 2.80 0.08 0.30 0.00 e l1 l e1 c e e1 d b a2 a1 0.95 bsc 8 0.60 1.90 bsc 0.60 ref 1.30 1.70 3.00 3.00 0.22 0.50 0.15 0.95 min. s y m b o l a1 . 4 5 max. sot-23 millimeters
AIC1702 13 ? sot-23-5 package outline drawing c a a2 b with plating view b l1 l seating plane gauge plane 0.25 a1 section a-a base metal e1 d e aa e1 see view b e note : 1. refer to jedec mo-178aa. 2. dimension "d" does not include mold flash, protru sions or gate burrs. mold flash, protrusion or gate bu rrs shall not exceed 10 mil per side. 3. dimension "e1" does not include inter-lead flash or protrusions. 4. controlling dimens ion is millimeter, converted in ch dimensions are not necessarily exact. 0 0.90 0.30 1.50 2.60 2.80 0.08 0.30 0.00 e l1 l e1 c e e1 d b a2 a1 0.95 bsc 8 0.60 1.90 bsc 0.60 ref 1.30 1.70 3.00 3.00 0.22 0.50 0.15 0.95 min. s y m b o l a 1.45 max. sot-23-5 millimeters
AIC1702 14 ? sot-89 package outline drawing a c e1 e b b1 d d1 h e l 0.36 0.89 3.94 2.29 1.50 4.40 0.35 0.44 e1 l h d e e d1 c b1 b 3.00 bsc 1.20 4.25 0.48 2.60 1.83 4.60 0.44 0.56 1.50 bsc 1.40 min. s y m b o l a1 . 6 0 max. sot-89 millimeters note: 1. refer to jedec to-243aa. 2. dimension "d" does not include mold flash, protrus ions or gate burrs. mold flash, protrusion or gate bur rs shall not exceed 6 mil per side. 3. dimension "e" does not include inter-lead flash or protrusions . 4. controlling dimension is millimeter, converted inc h dimensions are not necessarily exact.
AIC1702 15 ? dfn 6l-2x2x0.75-0.65mm package outline drawing note: information provided by aic is believed to be accurate and reliabl e. however, we cannot assume responsibility for use of any ci rcuitry other than circuitry entirely embodied in an aic product; nor for any infringement of patents or other rights of third parties that may result from its use. we reserve the right to change t he circuitry and specificat ions without notice. life support policy: aic does not authorize any aic product for us e in life support devices and/or systems. life support device s or sys- tems are devices or systems which, (i) are intended for surgical implant into the body or (ii) support or sustain life, and who se failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to res ult in a significant injury to the user. e l d2 b a3 top view bottom view side view e 31 a seating plane 6 pin#1 d 4 e2 note : 1. dimension a nd tolerancing conform to asme y14.5m-1994 . 2.controlling dimensionsmillimeterconverted inch dimension are not necessarily exact. 3.dimension b applies to metallized terminal and is measured between 0.10 and 0.25 mm from terminal t ip. millimeters min. s y m b o l a3 a0.70 max. 0.20 bsc 0.80 dfn 6l-2x2x0.75-0.65mm e e l e2 0.25 0.55 d2 d b 1.20 0.25 0.65 bsc 0.45 0.85 1.60 0.35 2.00 bsc 2.00 bsc

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