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AIC1952 dual output low esr cap. low-dropout 300ma linear regulator analog integrations corporation si-soft research center ds-1952g-04 20121101 3a1, no.1, li-hsin rd. i, science park, hsinchu 300, taiwan, r.o.c. tel: 886-3-5772500, fax: 886-3-5772510 www.analog.com.tw 1 ? features ? up to 300ma output current for each ldo. ? low quiescent current 50a (v out1 and v out2 enable mode). ? low dropout 200mv at 300ma load current and 3.3v output voltage. ? high psrr 70db at 1khz. ? independent shutdown controls. ? current limit and thermal protection. ? tiny sot-23-6, dfn 6l-2x2 package. ? applications ? cellular phones. ? pdas. ? digital still cameras. ? portable consumer equipments. ? description the AIC1952 is a dual output linear regulator in a tiny sot-23-6, dfn 6l-2x2 package. it is optimized for low esr ceramic capacitors operation and up to 300ma continuous current on each output. the AIC1952 offers high precision output voltage of ? 2%. at 300ma load current, a 200mv dropout is performed when output voltage is equal to 3.3v. the quality of low quiescent current and low dropout voltage makes this device ideal for battery power applications. the high ripple rejection and low noise of the AIC1952 provide enhanced performances for critical applications such as cellular phones, and pdas. the AIC1952 includes current limit and thermal shutdown protection. each of the output is controlled independently. ? typical application circuit vout1 6 en1 1 gnd 5 vin 2 vout2 4 en2 3 AIC1952 1 ? f c in 1 ? f c out1 1 ? f c out2 v in v out1 v out2
AIC1952 2 ? ordering information pin configuration front view package type g6t (sot-23-6) g6a (sot-23-6) a ic1952-x x x xx x xx packing type tr: tape & reel bg: bag package type g6t: sot-23-6 g6a: sot-23-6 da: dfn 6l-2x2 example: AIC1952-kegg6ttr ? vout1 = 1.8v, vout2 = 1.2v, with g6t type pin configuration in sot-23-6 green package and tape & reel packing. AIC1952-zkgg6atr ? vout1 = 3.3v, vout2 = 1.8v, with g6a type pin configuration in sot-23-6 green package and tape & reel packing. (internally set vout1 vout2 and package type, refer to the ?designator xxxxxx? table below. for other combinations, a unit of 0.1v within 0.8~3.8v, additional voltage versions and package type are available on demand.) g: green package gnd vout1 vout2 vin en1 en2 1 3 4 6 2 5 sot-23-6 da (dfn 6l-2x2) 5 1 4 2 6 3 en 2 en1 vin vout2 gn d vout1 dfn 6l-2x2 front view front view en2 vout2 en 1 gnd vin vout1 6 4 1 2 3 5 sot-23-6 output2 voltage: vout2 a 0.8v : : : : z 3.3v 3 2.85v 4 3.4v 5 3.5v 6 3.6v 7 3.7v 8 3.8v ou tp ut1 v oltage : vout1 a 0.8v : : : : z 3.3v 3 2.85v 4 3.4v 5 3.5v 6 3.6v 7 3.7v 8 3.8v
AIC1952 3 ? designator xxxxxx designator output voltage designator output voltage xxxxxx vout1 vout2 xxxxxx vout1 vout2 ww gg6t ww gg6a 3.0 3.0 degg6t degg6a 1.1 1.2 ezgg6t ezgg6a 1.2 3.3 khgg6t khgg6a 1.8 1.5 w3gg6t w3gg6a 3.0 2.85 kegg6t kegg6a 1.8 1.2 zkgg6t zkgg6a 3.3 1.8 zwgg6t zwgg6a 3.3 3.0 uhgg6t uhgg6a 2.8 1.5 zzgg6t zzgg6a 3.3 3.3 33gg6t 33gg6a 2.85 2.85 kzgg6t kzgg6a 1.8 3.3 kugg6t kugg6a 1.8 2.8 ukgg6t ukgg6a 2.8 1.8 hugg6t hugg6a 1.5 2.8 zugg6t zugg6a 3.3 2.8 wrgg6t wrgg6a 3.0 2.5 ergg6t ergg6a 1.2 2.5 uzgg6t 2.8 3.3 ? sot-23-6 marking part no. marking output voltage 1st x -> vout1, 2nd x -> vout2 x=a,b,c?y, z, 3~8 AIC1952-xxgg6t gqxxg (a=0.8v, b=0.9v,?y=3.2v, z=3.3v, 3=2.85v, 4=3.4v, 5=3.5v,...8=3.8v), 0.1v a step 1st x -> vout1, 2nd x -> vout2 x=a,b,c?y, z, 3~8 AIC1952-xxgg6a gpxxg (a=0.8v, b=0.9v,?y=3.2v, z=3.3v, 3=2.85v, 4=3.4v, 5=3.5v,...8=3.8v), 0.1v a step ? dfn 6l-2x2 marking part no. marking output voltage 1st x -> vout1, 2nd x -> vout2 x=a,b,c?y, z, 3~8 AIC1952-xxgda gtxxg (a=0.8v, b=0.9v,?y=3.2v, z=3.3v, 3=2.85v, 4=3.4v, 5=3.5v,...8=3.8v), 0.1v a step
AIC1952 4 ? absolute maximum ratings input vo ltage ....................................................................................................................................... 7v en pin voltage................................................................................................................. ................... 7v operating ambient temperature range t a ......................................................................... -40oc~85oc operating maximum junction temperature t j ............................................................................. 150o c storage temperature range t stg ..................................................................................... -65oc~150oc lead temperature (sol dering 10 se c.)......................................................................................... 26 0oc thermal resistance juncti on to case sot-23 -6 .............................................................115 ? c/w dfn 6l-2x2*.......................................................... 30 ? c/w thermal resistance juncti on to ambient sot-23 -6 .............................................................250 ? c/w dfn 6l- 2x2*........................................................165 ? c/w (assume no ambient airflow) absolute maximum ratings are those values beyond which the life of a device may be impaired. *the package is place on a two layers pcb with 2 o unces copper and 2 square inch, connected by 8 vias.
AIC1952 5 ? electrical characteristics (v in = v out + 1v, v en1 =v en2 = v in , t j =25? c, unless otherwise specified) (note 1) parameter test conditions symbol min. typ. max. unit input voltage (note 2) v in 1.6 6.0 v output voltage tolerance v in = 6v, i out = 1ma v out -2 2 % continuous output current i out 300 ma quiescent current v en2 = v en1 = v in i q 50 80 ? a gnd pin current i out1 = 300ma & i out2 = 300ma, v en2 = v en1 = v in i gnd 55 80 ? a standby current v en1 =v en2 = 0 i stby 0.1 ? a output current limit v in = 5v, v out = gnd i il 340 500 720 ma v out =1.2v 640 700 v out =1.8v 380 440 v out =2.5v 270 330 dropout voltage i out = 300ma v out =3.3v v drop 200 250 mv line regulation v in = v out + 1v to 6v ? v lir 3 16 mv load regulation i out = 1ma to 300ma ? v lor 2 10 mv ripple rejection f=1khz, ripple=0.5vp-p, psrr 70 db output noise voltage f= 10~100khz 24 ? vrms temperature coefficient tc 50 ppm/ thermal shutdown temperature v in = v out + 1v 150 thermal shutdown hysteresis 35 en pin specifications en pin current v en1 = v en2 = v in i en 0.1 ? a shutdown exit delay time ? t 100 ? s max output discharge resistance to gnd during shutdown rdson_ clmp 20 output on v enh 1.6 en input threshold output off v enl 0.25 v note 1: specifications are production tested at t a =25 ? c. specifications over the -40 ? c to 85 ? c operating temperature range are assu red by design, characterization and co rrelation with statistical quality controls (sqc). note 2: v in (min) is the higher value of vout + dropout voltage or 1.6v.
AIC1952 6 ? typical performance characteristics -40-30-20-10 0 1020304050607080 -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 output voltage variation (%) temperature ( ) v in =1.8v v out =0.8v 150 180 210 240 270 300 750 800 850 900 950 1000 1050 1100 t a =85 t a =-40 t a =25 dropout voltage (mv) out p ut current ( ma ) v out =0.8v fig.1 output voltage variation vs. temperature fig.2 dropout voltage vs. output current -40-30-20-10 0 1020304050607080 -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 output voltage variation (%) temperature ( ) v in =3.5v v out =2.5v 50 100 150 200 250 300 0 50 100 150 200 250 300 350 400 450 t a =85 t a =-40 t a =25 dropout voltage (mv) output current (ma) v out =2.5v fig.3 output voltage variation vs. temperature fig.4 dropout voltage vs. output current -40-30-20-10 0 1020304050607080 -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 output voltage variation (%) temperature ( ) v in =4.3v v out =3.3v 50 100 150 200 250 300 40 80 120 160 200 240 t a =-40 t a =25 t a =85 dropout voltage (mv) out p ut current ( ma ) v out =3.3v fig.5 output voltage variation vs. temperature fig.6 dropout voltage vs. output current
AIC1952 7 -40-30-20-10 0 1020304050607080 32 36 40 44 48 quiescent current (ua) temperature ( ) v in =1.8v v out1 =v out2 =0.8v 4.0 4.5 5.0 5.5 6.0 36 38 40 42 44 46 48 50 52 54 56 i out =300ma i out =0ma ground current (ua) input voltage (v) v out1 =3.3v, v out2 =0.8v, t a =25 fig.7 dual ldo quiescent current vs. temperature fig.8 dual ldo quiescent current and ground current vs. input voltage 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 20 22 24 26 28 30 single ldo quiescent current (ua) input voltage (v) t a =25 v out1 =1.8v v out2 =shutdown mode 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 20 22 24 26 28 30 single ldo quiescent current (ua) input voltage (v) t a =25 v out1 =2.5v v out2 =shutdown mode fig.9 single ldo quiescent current vs. input voltage fig.10 single ldo quiescent current vs. input voltage fig.11 start up waveform at v in =3.8v, v out1 =2.8v and v out2 =1.8v fig.12 start up waveform at v in =3.8v, v out1 =2.8v and v out2 =1.8 v en1 si g nal en2 si g nal output1 volta g e out p ut1 volta g e out p ut2 volta g e out p ut2 volta g e c in =c out1 =c out2 =1 ? f i out1 =0ma and v out2 is disable c in =c out1 =c out2 =1 ? f i out2 =0ma and v out1 is disable
AIC1952 8 fig.13 start up waveform at v in =3.8v, v out1 =2.8v and v out2 =1.8v fig.14 shutdown waveform at v in =3.8v, v out1 =2.8v and v out2 =1.8v fig.15 load transient response at v in =2.8v, v out =1.8v fig.16 load transient response at v in =3.5v, v out =2.5v fig.17 load transient response at v in =2.5v, v out =1.5v fig.18 load transient response at v in =4.3v, v out =3.3v en1 and en2 si g nal en1 and en2 si g nal out p ut1 volta g e out p ut2 volta g e out p ut1 volta g e out p ut2 volta g e c in =c out1 =c out2 =1 ? f i out1 & i out2 =0ma c in =c out1 =c out2 =1 ? f i out1 & i out2 =0ma output current out p ut current output current output volta g e ripple output current out p ut volta g e ri pp le output volta g e ripple out p ut volta g e ri pp le c in =c out1 =c out2 =1 ? f i out = 50ma to 300ma c in =c out1 =c out2 =1 ? f i out = 50ma to 300ma c in =c out1 =c out2 =1 ? f i out = 50ma to 300ma c in =c out1 =c out2 =1 ? f i out = 50ma to 300ma
AIC1952 9 fig.19 cross talk at v in =3.8v, v out1 =1.8v and v out2 =2.8v fig.20 cross talk at v in =3.8v, v out1 =1.8v and v out2 =2.8v -40-20 0 20406080 2.0 1.5 1.0 0.5 0.0 -0.5 output voltage variation (%) temperature ( ) v out =0.8v, i out =120ma v in =1.6v v in =1.7v 1.6 1.7 1.8 1.9 2.0 4 3 2 1 0 output voltage variation (%) input voltage (v) v out =0.8v, t=27 i out =100ma i out =200ma i out =300ma fig.21 output voltage variation vs. temperature. fig.22 output voltage vs. input voltage. 10 100 1k 10k 100k 1m 10m -75 -70 -65 -60 -55 -50 -45 -40 simulation verified psrr (db) fre q uenc y ( hz ) fig.23 psrr at v in =2.5v, v out =1.0v and i out =10ma. out p ut1 volta g e ri pp le output1 current output1 voltage ripple output2 current out p ut2 volta g e ri pp le out p ut2 volta g e ri pp le c in =c out1 =c out2 =1 ? f i out1 = 50ma to 300ma & i out2 =0ma c in =c out1 =c out2 =1 ? f i out2 = 50ma to 300ma & i out1 =0ma c in =c out1 =c out2 =1 ? f
AIC1952 10 ? block diagram ? pin description vin pin - power input. gnd pin - ground. en1 pin - output 1 on/off controller. this pin isn?t allowed to float. en2 pin - output 2 on/off controller. this pin isn?t allowed to float. vout1 pin - output 1. vout2 pin - output 2.
AIC1952 11 ? application information the AIC1952 is a low-dropout, low quiescent-current, dual-output linear regulator for battery power applications. these parts are available with preset output voltages ranging from 0.8v to 3.8v, and the parts can supply loads up to 300ma. shutdown the AIC1952 has two independent shutdown control inputs (en1 and en2). by connecting en1 pin to ground, output1 can be shut down. by connecting en2 pin to ground, output2 can be shut down. by connecting both of en1 pin and en2 pin to ground, the AIC1952 can be shut down to reduce the supply current to 0.1 ? a. current limit the AIC1952 includes two independent current limiters, which monitor and control the maximum output current. if the output is overloaded or shorted to ground, this can protect the device from being damaged. thermal protection the AIC1952 includes a thermal-limiting circuit, which is designed to protect the device against overload condition. when the junction temperature exceeds t j =150oc, the thermal-limiti ng circuit turns off the pass transistors and allows the ic to cool. for continuous load condition, maximum rating of junction temperature must not be exceeded. input-output capacitors linear regulators require input and output capacitors to maintain stability. input capacitor at 1 ? f with a 1? f ceramic output capacitor for each regulator 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. power dissipation the maximum power dissipation of AIC1952 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 configurati on 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 out1 (v in -v out1 )+ i out2 (v in -v out2 ) the maximum power dissipation is: ja a max-j max r )t-(t p ? where t j-max is the maximum allowable junction temperature (150 ? 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.
AIC1952 12 ? physical dimensions ? sot-23-6 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-178ab. 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 dimension 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 a1 . 4 5 max. sot-23-6 millimeters
AIC1952 13 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 and 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 tip. millimeters min. s y m b o l a3 a 0.70 max. 0.20 bsc 0.80 dfn 6l-2x2x0.75-0.65mm e e l e2 0.25 0.55 d2 d b 1.10 0.20 0.65 bsc 0.45 0.85 1.60 0.35 2.00 bsc 2.00 bsc ? dfn 6l-2x2 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 m ay result from its use. we reserve the right to change the circ uitry and specifications without notice. life support policy: aic does not authorize any aic product for use in life support devices and/or systems. life support device s or systems are devices or systems which, (i) are intended for surgical impl ant into the body or (ii) support or sustain life, and whose fa ilure to perform, when properly used in accordance with instructions for use provi ded in the labeling, can be reasonably expected to result in a significant injury to the user.

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