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aic1117 800ma low dropout positive regulator analog integrations corporation si-soft research center ds-1117g-02 20131018 3a1, 1 li-hsin 1 st rd., science park , hsinchu 300, taiwan , r.o.c. tel: 886-3-5772500 fax: 886-3-5772510 www.analog.com.tw 1 ? features ? dropout voltage 1.2v at 800ma output current. ? fast transient response. ? line regulation, typical at 0.015%. ? load regulation, typical at 0.1%. ? current limiting and thermal protection. ? adjustable output voltage or fixed at 1.8v, 2.5v and 3.3v. ? standard 3-pin power packages. ? applications ? active scsi terminators. ? post regulators for switching supplies. ? battery chargers. ? pc add-on card. ? description the aic1117 is a low dropout, three terminals regulator designed to provide output current up to 800ma. the device is available in an adjustable version and fixed output voltage of 1.8v, 2.5v and 3.3v. dropout voltage of maximum of 1.4v is guaranteed at 800ma output current. the quality of low dropout voltage and fast transient response make this device ideal for low voltage microprocessor applications. the aic1117 requires output capacitance of a minimum of 10 f for stability. built-in output current limiting and thermal limiting provide maximal protection to the aic1117 against fault conditions. ? typical application circuit c2 10 ? f (note1) v out 3.3v v in 5v + + v ref rf2 205 ? 1% a dj aic1117 c1 10 ? f 2 3 1 rf1 125 ? 1% v ref =v out - v adj =1.25v (typ.) v out =v ref x (1+rf2/rf1)+ i adj x rf2 i adj =55 ? a (typ.) (1) c1 needed if device is far away from filter capacitors. (2) c2 required for stability. adjustable voltage regulator c2 10 ? f (note1) v out 3.3v v in 5v + + gnd c1 10 ? f aic1117-33 2 1 3 fixed voltage regulator
aic1117 2 ? ordering information pin configuration to-252 (ge&pe) top view 1: adj (gnd) 2: vout (tab) 3: vin 23 1 to-220 (gt&pt) front view 1: adj (gnd) 2: vout (tab) 3: vin sot-223 (gy&py) top view 1: adj (gnd) 2: vout (tab) 3: vin 23 1 23 1 to-263 (gm&pm) top view 1: adj (gnd) 2: vout (tab) 3: vin packing type tr: tape & reel tb: tube packaging type e: to-252 m: to-263 t: to-220 y: sot-223 p: lead free commercial g: green package output voltage default:adjustable 18: 1.8v 25: 2.5v 33: 3.3v aic1117-xx xxxx exampl e: aic1117-25getr ? 2.5v version in to-252 green package & taping & reel packing type aic1117-25pytr ? 2.5v version in sot-223 lead free package & taping & reel 1 23 ? sot-223 marking part no. gy py aic1117 ak17g ak17p AIC1117-18 ak18g ak18p aic1117-25 ak25g ak25p aic1117-33 ak33g ak33p
aic1117 3 ? absolute maximum ratings vin pin to adj/ gnd pin 7v operating temperature range ?40 ? c to 85 ? c storage temperature range ?65 ? c to 150 ? c maximum junction temperature 125 ? c lead temperature (soldering, 10 sec) 260 ? c thermal resistance (junction to case) to-220 3 ? c /w to-252 12.5 ? c /w sot-223 15? c /w to-263 3 ? c /w thermal resistance junction to ambient to-252 100 ? c/w (assume no ambient airflow, no heatsink) to-263 60? c /w sot-223 155 ? c /w to-220 50? c /w absolute maximum ratings are those values beyond which the life of a device may be impaired. ? test circuit refer to typical application circuit.
aic1117 4 ? electrical characteristics (v in =5v, t a =25 ? c, i o =10ma, unless otherwise specified) (note2) parameter test conditions min. typ. max. unit 1.238 1.25 1.262 reference voltage aic1117 (adj), t j =25 ? c 0 ? c ? t j ? 125 ? c 1.225 1.25 1.275 v AIC1117-18, v in =3.3v 1.78 1.8 1.82 aic1117-25, v in =5v 2.47 2.5 2.53 output voltage aic1117-33, v in =5v 3.26 3.30 3.33 v 2.65? v in ? 7v, v out =1.25v t j =25 ? c 0.015 0.2 line regulation 0 ? c ? t j ? 125 ? c 0.035 0.2 % t j =25 ? c 10ma ? i o ? 800ma 0.1 0.3 load regulation 0 ? c ? t j ? 125 ? c 0.2 0.4 % dropout voltage ? v out , ? v ref =1% 10ma ? i o ? 800ma 1.2 1.4 v current limit 0.85 a adjusted pin current (i adj ) 2.65? v in ? 7v 10ma ? i o ? 800ma 55 120 ? a adjusted pin current change ( ? i adj ) 2.65? v in ? 7v 10ma ? i o ? 800ma 0.2 5 ? a temperature stability i o =0.5a 0.5 % minimum load current 5 10 ma gnd current 2.65 ? v in ? 7v 10 14 ma rms output noise (% of v out ) 10hz ? f ? 10khz 0.003 % ripple rejection ratio 120hz input ripple c out =25 ? f 60 72 db note 1: to avoid output oscillation, aluminum electrol ytic output capacitor is recommended and ceramic capacitor is not suggested. note 2: specifications are production tested at t a =25 ? c. specifications over the -40 ? c to 85 ? c operating temperature range are assured by design, characte rization and correlation with statistical quality controls (sqc).
aic1117 5 ? typical performance characteristics fig. 1 aic1117 (adj) dropout voltage minimum differential voltage (v) 0 200 400 600 800 1000 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 output current (ma) t a =50 ? c t a =125 ? c t a =0 ? c 123456789 0 1 2 3 4 5 t a =25 ? c fig. 2 minimum load current (adjustable version) minimum load current (ma) input/ output differential (v) t a =125 ? c t a =0 ? c fig. 3 aic1117 (adj) power vs. thermal regulation thermal re g ulation ( %/w ) 0.51.01.52.02.53.03.5 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 i out =500ma (30ms puls) power (watt) t a =125 ? c -20 0 20 40 60 80 100 120 140 -1.6 -1.2 -0.8 -0.4 0.0 0.4 0.8 1.2 1.6 i out =0.5a fig. 4 aic1117 (adj) temperature stability output voltage deviation (%) temperature ( ? c) 10 1 10 2 10 3 10 4 10 5 10 6 10 7 -80 -70 -60 -50 -40 -30 -20 fig. 5 aic1117 (adj) ripple rejection ratio (db) c out =3.3 ? f ripple rejection ratio (db) frequency (hz) c out =10 ? f c out =25 ? f
aic1117 6 ? typical performance characteristics (continued) load current fig. 6 load transient response time ( ? s) 0 40 80 120 160 200 0.1a 0.4a -0.1 -0.05 0 0.05 0.1 output voltage (v, ac) v in =5v c in =1 ? f c out =10 ? f (tantalum) v out =3.3v fig. 7 line transient response time ( ? s) output voltage (mv, ac) input voltage (v) 0 10 20 30 40 50 6.0 7.0 --100 --50 0 50 c in =1 ? f c out =10 ? f (tantalum) v out =3.3v fig. 8 region of stable c out esr vs. load current fig. 9 region of stable c out esr vs. load current
aic1117 7 ? block diagram vin 55 ? a a dj v ref 1.25v - + gm + thermal limit current amp. vout gnd for fixed voltage device current limit ? pin descriptions adj pin - providing v ref =1.25v (typ.) for adjustable v out . v ref =v out -v adj and i adj =55 ? a (typ.) (gnd pin - power ground.) vout pin - adjustable output voltage. vin pin - power input.
aic1117 8 ? application information input-output capacitors linear regulators require input and output capacitors to maintain stability. input capacitor at 10? f with a 10 ? f aluminum electrolytic output capacitor is recommended . to avoid oscillation, it is recommended to follow fig. 8, 9 to choose proper capacitor specifications. power dissipation the aic1117 obtains thermal-limiting circuitry, which is designed to protect the device against overload condition. for continuous load condition, maximum rating of junction temperature must not be exceeded. it is important to pay more attention in thermal resistance. it includes junction to case, junction to ambient. the maximum power dissipation of aic1117 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 gr eatly 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 (125 ? 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 examples 125 r1 205 r2 + 10 ? f c2 + 10 ? f c1 mmbt2222a 1k r3 1k r4 vin vout a ic1117 3 1 a dj 2 5v 3.3v t tl 125 r1 205 r2 + 100 ? f c2 + 10 ? f c1 vin vout a ic1117 3 1 a dj 2 cadj 5v 3.3v * cadj can improve ripple rejection fig. 10 v out =3.3v with shutdown fig. 11 improving ripple rejection 125 r1 + 10 ? f c2 + 10 ? f c1 vin vout a ic1117 3 1 a dj 2 5v 1.25v + 100 ? f c2 + 10 ? f c1 vout a ic1117-33 3 1 2 -3.3v d1 t1 vin floating input fig. 12 v out =1.25v application circuit fig. 13 low dropout negative supply
aic1117 9 ? physical dimensions (unit: mm) ? to-220 section a-a b a2 l l1 b2 e aa e p q d h1 a with plating base metal a1 c d1 e1 d2 thermal pad 2.54 5.85 1.15 3.54 12.70 2.04 0.51 2.54 bsc 6.86 14.23 0.35 0.38 h1 q p l1 l a2 d e a1 e1 c b2 b 6.85 3.42 6.35 4.08 14.73 2.92 1.77 1.39 8.90 16.51 0.61 1.01 3.56 min. s y m b o l a 4.82 max. to-220 millimeters d1 8.38 9.02 -- 9.66 e 10.66 d2 11.75 12.88 note: 1. refer to jedec to-220ab. 2. dimension "e" 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 "d1" does not include inter-lead flash o r protrusions. 4. controlling dimensio n is millimeter, converted inc h dimensions are not necessarily exact.
aic1117 1 0 ? to-252 c2 see view b a h b3 a a e e d l3 l4 c base metal with plating seating plane b section a-a view b a1 l l1 gauge plane l2 ? thermal pad d1 e1 millimeters to-252-3l max. 2.38 a s y m b o l min. 2.19 0.13 5.46 0.61 0.89 6.22 6.73 0.89 2.67 ref 0.51 bsc 10.41 1.78 2.03 1.02 2.28 bsc a1 b b3 c2 e d c h l l1 l2 l4 l3 e 0.00 4.95 0.46 0.46 5.33 6.35 9.40 1.40 0.89 -- 0.64 0 8 ? 6.00 4.60 5.46 3.90 d1 e1 note: 1. refer to jedec to-252aa and ab. 2. dimension "e" does no t include mold flash, protrus ions or gate burrs. mold flash, protrus ion or gate bur rs shall not exceed 6 mil per side . 3. dimension " d" does not include inter-lead flash or protrusions. 4. contr olling dimension is mi llimeter, converted inc h dimensions are n ot necessarily exact.
aic1117 11 ? sot-223 3.30 0 1.55 0.90 6.70 6.30 0.23 2.90 0.66 0.02 e1 l e1 e b2 d e c b a2 a1 3.70 8 2.30 bsc 4.60 bsc 1.65 7.30 6.70 0.33 3.10 0.84 0.10 min. s y m b o l a 1.80 max. sot-223 millimeters note: 1. refer to jedec to-261aa. 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 "e1" does not include inter-lead flash o r protrusions. 4. controlling dimension is millimeter, converted inch dimensions are not necessarily exact. c b a a2 with plating view b 0.25 l seating plane gauge plane a1 base metal section a-a d e e1 e aa b2 e1 see view b
aic1117 1 2 ? to-263 note: information provided by aic is believed to be accurate and reliable. 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 specifications 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 systems are devices or systems which, (i) are intended for surgic al implant into the body or (ii) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeli ng, can be reasonably expected to result in a significant injury to the user. e1 d1 section a-a b see view b c l2 e a a h d l1 a c2 b2 e l view b ? l3 gauge plane a1 seating plane with plating base metal thermal pad note: 1. refer to jedec to-263ab. 2. dimension "e" does not include mold flash, protrus ions or gate burrs. mold flash, protrusion or gate bur rs shall not exc eed 6 mil per side . 3. dim ension "d" does not include inter-lead flash or protrusions. 4. controlling dimensi on is millimeter, converted inc h dimensions are not necessarily exact. 0 0.51 -- 1.78 14.61 9.65 8.38 1.14 0.38 1.14 0.00 e l3 l2 l1 l h c d e c2 b2 b a1 2.54 bsc 8 1.68 1.78 2.79 15.88 0.25 bsc 0.99 10.67 9.65 1.65 0.74 1.78 0.25 4.06 min. s y m b o l a4 . 8 3 max. to-263-3l millimeters -- 6.86 d1 6.23 e1 -- --

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