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general desc rip tion t he aat1217 a h igh e ffi ciency, synchr onous, fixed f reque ncy, st ep-up conve rter desi gned for si ngle- c ell or d ual -cell alkaline, nimh, or n icd battery- p owere d applications. the hi gh 1.2mhz switching f reque ncy and completel y integr at ed control cir - c uitry min imize the tota l solution footprint ar ea w h ile m aintaining excellent regulation, rippl e, and t ransi en t respo nse throug hout the full l oad range. p ulse skipping mode oper ation and low quiescent c urrent al low t he aat1217 to main tain high effi - c i e ncy perfor ma nce for l ight load a nd sleep mode c onditions. wit h a 1.2a peak switch current lim it, t he a at1217 is capa ble of deliveri ng 100ma to the l oad from a sin gle aa cell or up to 400ma fr om dual a a c el ls. the a at1217 has a 0.85 v start-up volt - a ge with operat io n d ow n to 0.5v. t he aat1217 is a vai lable in a pb-fre e, space-sav - i ng low profile (1mm ) 6- pi n tsot23 package and i s r ated over th e -40c to +85c amb ient tem pera - t ure ra n ge. fea tur es v i n operation range : 0.5v to v o u t v o ut ra nge: 2.5 v to 5.5v 100ma outp ut from a sing le aa cell input 400ma outp ut from a dual a a cell input high eff icien cy: up to 93 efficienc y low start-up voltage: 0.8 5v typi cal internal s ynchronous rectifier v ou t 4.5v: no external s chottky diode fixed frequ en cy pulse widt h modulation ( p wm) curre nt-mod e con trol scheme with i nte rnal compensation 1.2mhz fixed switching frequency 1.2a curre nt limit light l oad p ulse skipping mode operation low 80a no load in put curre nt over-cu rren t protection emi re duction anti-ring in g control circuitry low shu tdo wn curre nt : <1.0a -40c to +85 c ambient tempe ratur e rang e low profile (1mm) tsot23-6 package ap p lications cel lu la r an d smart phones digita l st ill a nd video cameras microproce ssors and dsp co re supplies mp3 player portab le i nst ruments wireless an d dsl modems aa t1217 600ma, 1.2mhz, micropower syn c hr onous step-u p con verte r typical a pplica tion 1217.2007.07.1.0 1 switchreg fb vin shdn gnd vout aat1217-1.2 c in 4.7f v in : 0.85v l1 4.7h r1 1.02m ? r2 604k ? v out : 3.3v,100 ma sw r3 1m ? c out 4.7f fb vin shdn gnd vout aat1217-3.3 c in 4.7f v in :0.85v l1 4.7h v out : 3.3v,100 ma sw r3 1m ? c out 4.7f
pin d escriptions pin c onfiguratio n tso t23-6 (top view) pin symbol function 1 sw power switch pin. ties to the drains of the pmos synchro nous rectifier and th e n mos switch. 2 g nd g rou nd pin 3 f b fee dba ck input pin . con nect fb to the cen ter p o i n t of the external resistor divide r. t he feedback thresh old volta ge is 1. 23v. 4 sh dn s hutdown signal inp ut. l og ic hig h enables the ic. l ogic low disab les th e ic. shu t do wn c urr ent is <1a. 5 vo ut powe r ou tput pin. tied to the sour ce of the pmos synchr onous rect if ie r. 6 vi n power supply in put. must be closely decouple d to gnd, pin 2, with a 4.7f or greater c era mic capacit or . aa t1 217 600ma, 1.2 mhz, micropower syn chron ou s s tep-up conv erte r 2 1217.2007.07.1.0 gnd vin vout shdn fb sw 1 2 3 4 5 6
absolut e maximum rati ngs 1 therma l information 3 s ymbol description value unit s j a ma ximum thermal resist an ce 190 c/w p d ma ximum power dissipat ion 526 mw s ymbol description value unit s v in input s up ply voltage -0.3 to 6 v v s w sw voltage -0.3 to 6 v v f b , v shdn f b, shdn v oltages -0.3 to 6 v v o ut vout voltage -0.3 to 6 v t a operating ambient te mp era tur e ra nge 2 - 40 to 85 c t s torage storage tempe rature range -65 to 150 c t l ead le ad temperatu re (sold erin g, 1 0s) 300 c t j operating junction temper atu re range 2 - 40 to 150 c aa t1217 600ma, 1.2mhz, micropower syn c hr onous step-u p con verte r ()(,),,( 3 1. absolute maximum ratings are those values beyond which the life of a device may be impaired. 2. t j is calculated from the ambient temperature t a and power dissipation p d according to the following formula: t j = t a + p d x j a . 3. mounted on an fr4 board.
electr ica l cha racte ri stic s 1 v i n = 1 .2v , v o ut = 3 .3v , t a = 2 5 c, unless othe rwise not ed. symbol description conditions min typ max unit s v i n m inimum start-u p volta ge i o ut = 1ma 0.8 5 1 v m inimum o perating vo lt ag e v s hdn = v i n 0 .5 0.65 v o ut o utput voltage ran ge 2.5 5.5 v o utput voltage accu racy 3 i o ut = 10ma; t a = -40c to +85c -4 +4 v f b r eference voltage t a = -4 0c to +85c 1.1 92 1.2 30 1.2 68 v v i n = 1.2v to 2.4v, i o ut = 10ma, ? v o u t / v o ut / reference voltag e l in e v o ut = 3.3v 0 .2 /v ? v i n r egulati on v i n = 2.4v to 4.2v, i o ut = 10ma, v o ut = 5.0v 0 .4 v i n = 1.2v, i out = 10ma to 100ma ? v o u t / v o ut / reference voltag e l oad v o ut = 3.3v 0 .00 3 /ma ? i o ut r egulati on v i n = 3.6v, i out = 10ma to 400ma v o ut = 5.0v 0 .00 4 i q q uiescent current ( sh utd own ) v s hdn = 0 0.0 1 1 q uiescent current ( active ) v i n = 1.8v, current from input volta ge 1 15 a sour ce. v s hdn = v i n q uiescent current ( active ) measu red on v o ut , v s hdn = v i n 3 00 500 i l nmos n mos switch leaka ge v s w = 5 v 0.1 5 a i l pmos p m os switch l eaka ge v s w = 0 v 0.1 5 a r d s(on)l n mos switch on re sist an ce v o ut = 3.3v 0.3 5 v o ut = 5v 0.3 0 r d s(on)h p m os switch on resista nce v o ut = 3.3v 0.6 0 v o ut = 5v 0.5 5 i c l n mos current limit 750 1200 ma ? t (i c l ) current limit dela y to ou tp ut 40 ns d m ax m aximum dut y cy cle v f b = 1 .15v, t a = -40c t o +85c 80 8 5 f o sc s witc hing frequency t a = -4 0c to +85c 0.9 1.2 1.5 mhz v s hd n s hdn in put low 0.35 v s hdn in put high 1.0 0 i s hdn s hdn in put current v s hdn = 5.5v 0.0 1 1 a t s d t hermal shutdow n 1 60 c hysteresis 20 aa t1 217 600ma, 1.2 mhz, micropower syn chron ou s s tep-up conv erte r 4 '(')())' 1. specifications over the temperature range are guaranteed by design, characterization, and correlation with statistical process con - trols. 2. not including the current into internal resistance divider. 3. for fixed 3.3v and 5.0v output voltage version. the adjustable output voltage is guaranteed by reference voltage accuracy.
typical chara ct eri sti cs aa t1217 600ma, 1.2mhz, micropower syn c hr onous step-u p con verte r 1217.2007.07.1.0 5 minimum start-up voltage vs. output current (v out = 3.3v; t a = 25 c) output current (ma) s t a r t - u p v o l t a g e ( v ) 0 20 40 60 80 100 120 140 160 180 200 0.6 0.75 0.9 1.05 1.2 1.35 1.5 maximum output current vs. input voltage (l = 4.7?; t a = 25 c) input voltage (v) m a x i m u m o u t p u t c u r r e n t ( m a ) 0.5 1 1.5 2 2.5 3 3.5 44.5 0 200 400 600 800 1000 v out = 5v v out = 3.3v output voltage vs. output current (v out = 3.3v; t a = 25 c) output current (ma) o u t p u t v o l t a g e ( v ) 0 100 200 300 400 500 600 3.1 3.2 3.3 3.4 3.5 v in = 1.2v v in = 1.5v v in = 2.4v output voltage vs. output current (v out = 5v; t a = 25 c) output current (ma) o u t p u t v o l t a g e ( v ) 0 100 200 300 400 500 600 4.8 4.9 5 5.1 5.2 v in = 1.2v v in = 1.5v v in = 2.4v v in = 3.6v efficiency vs. output current (v o ut = 3.3v; t a = 25 c) output current (ma) e f f i c i e n c y ( % ) 0.1 1 10 100 1000 0 10 2 0 3 0 40 5 0 6 0 7 0 8 0 90 100 v in = 2.4v v in = 1.2v v in = 1.5v efficiency vs. output current (v o ut = 5v; t a = 25 c) output current (ma) e f f i c i e n c y ( % ) 0.1 1 10 100 1000 0 1 0 20 30 40 50 60 70 80 9 0 1 00 v in = 1.2v v in = 1.5v v in = 3.6v v in = 2.4v
typical character isti cs aa t1 217 600ma, 1.2 mhz, micropower syn chron ou s s tep-up conv erte r 6 1217.2007.07.1.0 load transient response (v in = 1.5v; v out = 3.3v; c ff = 100pf) i out 50ma/div v out 100mv/div (ac) time (100?/div) 0a 40ma 100ma pulse skipping mode operation (v in = 1.8v; v out = 3.3v; i out = 5ma) v sw 2v/div v out 50mv/div (ac) time (1ms/div) 0v anti-ringing operation at sw (v in = 2.4v; v out = 5v; i out = 20ma) v sw 2v/div 0v time (400ns/div) no load input current vs. input voltage (v o ut = 3.3v; t a = 25 c; no load) input voltage (v) i n p u t c u r r e n t ( a ) 1 .5 1 .8 2 .1 2 .4 2 .7 3 50 60 70 8 0 9 0 1 00 1 10 120 130 140 150 output voltage vs. temperature temperature ( c) o u t p u t v o l t a g e ( v ) -50 -25 0 25 50 75 100 3 .25 3.26 3.27 3.28 3 .29 3.3 3 .31 3 .32 3.33 3.34 3.35
functional bloc k d iagra m aa t1217 600ma, 1.2mhz, micropower syn c hr onous step-u p con verte r 1217.2007.07.1.0 7 functional descr ipt ion t h e aa t1217 is a synchronous s tep-u p dc- dc con - v ert er. it utili zes i nternal mosfet switch es to a chie ve high effici ency ov er the ful l load curr ent r a n ge. it operates at a fixed switching frequency of 1 .2 mhz, an d uses the s lope compe nsated current m ode pulse width modulation (pwm) ar chitecture. t h e device can operate with an input voltage bel ow 1 v ; th e t ypica l start-up volta ge is 0.85v . synchron ou s rectification t he aat1217 integrates a synch ro nous rectifier to i mprove ef fi ci e ncy as well as to eliminate the need f or an e xtern al schottky dio de. the synchronous r ec tifier is us ed t o r ed uce the conduction l oss con - t ri b ute d by th e for wa rd volta ge of an ext ernal s chottky diod e. the synchr onous r ecti fi er is real - i ze d by a p-chan nel mosfet (pmos) with gate control circuitry that incorporates relatively co m p l i - cated timin g co ncerns. an exte rn al schottky diod e is re quired wh en the output voltage is gr eater than 4.5v . low voltage start- up the aat1 217 ca n start-up with supply voltages dow n to 0. 85v. d urin g start-up, the internal low voltage start-up circuitry controls the in te rnal nmos switch . the aat1217 leaves the start-up mod e once v ou t e xceeds 2. 3v. a n internal com - parator (vout good) monitors the output voltage and pl aces t he chip int o normal operation once v ou t exceeds 2.3 v. th e aat1217 s control circuit - ry is biased b y v in d u ring start-up and biased by v ou t once v ou t e xceeds v in . when v ou t e xce eds v in , th e aat1 217 s operation will b e independent of v in . c out r 1 r2 pwm logic shutdown control + C comp C e a + v o ut g nd shdn f b vout oscillator 1.2mhz antiringing control bandgap 1 .23v start-up o scillator + C vout g ood mux current sense slope c ompensation t o v in 2 .3v l1 v in v in s w C + c in
curr e nt mode operati o n the aat1217 is based on a slope com pensated current mode pwm con tr ol t opology. it operates at a fixed frequency of 1.2mhz. at the begi nnin g of e ach clo ck cycle, t he main swi tch (nmos) is turned o n and th e ind uctor current sta rts to ramp. afte r the m aximum dut y cycle or the sense cur rent signal e qu als the error ampl ifier (ea) output, the m ai n sw itch is turn ed off and the synchronous switch ( pm os) is turned on. thi s co ntrol topol ogy fea - tures cycle-by-cycle cu rr en t l imiting which can pre - vent the main switc h from overstress and the exter - n al induc tor fr om s atura ti ng. pulse skippi ng mode operatio n at v ery light load, the aat1217 automatically sw itches into pulse skip ping mo de oper ation to i mprove efficiency. d uring thi s mode, the pwm contro l w ill skip some p ul ses to ma intain regul ation. if the l oad increas es and the ou tput vol tage d rops, the device wi ll automati cally switch back to normal pwm mode and ma intai n regulation. anti-ringing contr ol an anti-ringing circuitry i s included to remove the h igh f re quency ringing that appears on the sw pin when th e in duct or cur re nt goes to zero. in this case, a ringing on the s w pi n is induced due to r em ainin g energy stored i n parasitic components of switch and in ductor. t he anti-ringing circu it ry clamps the vo ltage inte rn al ly to the battery voltage a nd the refore damp ens th is ri nging. de vice shutdown w hen shdn i s set logic high , the aat1217 is put i nto a ctive m ode o peration. if shdn is set logic l ow, the d evice is put into shutdow n m ode and con - sumes l ess than 1a of current. after start-up, the i nterna l circuitry is supplied by v out , ho wever, if shutdown mode is en abl ed , the int ernal ci rcuitry will be supplied by th e input so urce again. ap p licatio n informati on adjusta ble output v oltag e an external re sist or d ivide r is used to set the out put vol tage. the out put voltage o f the sw itchi ng r egula - tor ( v ou t ) is determin ed by the following eq uation: tab le 1 lists the recomme nded resistor val ues for particular o utpu t volt age settings. tabl e 1: resis tor sel ection for out put voltage s etting. fixed output voltage aat1 217 has tw o fi xed ou tput v oltage opti ons: 3.3v a nd 5v. an internal res ist or divider is c on - nected to the fb pin inside t he pac kage which elim - ina tes the need for external feedback resistors . whe n designin g with t he f ixed ou tp ut volt age option, reme mber to leave the fb pin open; oth er - wi se the output volt age will be aff ec ted. however , a feed -forward ca pacitor ca n s till be added betwee n the fb a nd v out pins to enhance the contro l loo p performance. i nduc tor selection the high switching f re quency of 1. 2mhz allows for small surface mount inducto rs. for most applica - tion s, the aa t1217 operat es with i nductors from 2.2 h to 10 h. use the following equations to sel ect the p ro per inductor value for a particular ap plication con dition: v out r 1( ) r2( ) 3.3v 1.0 2m 604k 5.0v 1.0 2m 332k aa t1 217 600ma, 1.2 mhz,micropower syn chron ou ss tep-upconv erte r 8 '(')())' ?? ?? v out = 1.23v 1 + r1 r2
i pe ak peakinductorcu rr ent i dc d c compon ent ( average) of the inductor c urren t i l peak- peakind uctor ripplec ur rent i out output(lo ad)cu rr ent v out outputv oltag e v in inputvo ltage a at12 17 effi ciency (co nsult the perform - a nce grap hs in the typical char acteristics s ectionof t heda tasheet) d steady-stat edutyc ycle f sw swi tchi ngfrequ ency l in ducto rva lue fo r a g iven chos en inductor value and a pplication cond itions makesurethepeakinductorcu rr entdoes not ex ce edthem aximumcurrent r ating o f the sel ect - edvendorsinductor.fo roptimumload transientand effici enc y, low d cr inductors should be selected. table 2 lists som e typical surface moun t inductors that aresuitable fortypicalaa t1217app lications. i nputcapacitor a surface m ount 4.7f or greater, x5r or x7r, cer amiccapacitorissuggested fortheinp utcapac - ito r.theinputcapacitorprovi desal owimpedance loopfortheedgesofpul sedcurrent drawn bythe aat1217. low esr/esl x7r and x5r ceram ic capacitor s are ideal for this functi on.to minimize stray inductance, the capacitor sh ould be placed ascloseaspossibl etotheic.t hiskeep sthehigh frequency content of the input current localized, minimizing emi and input voltage ripple. always examine the ceramic capacitor d c v oltage coeffi - cien t characteri stics to get the proper value. f or example, the capacitance of a 10 f, 6.3v, x5r cer amiccapacitorw ith5.0v dc appliedi s actually abou t6 f. alaboratorytestset-uptypicallyconsist s of twolon g wires r unning from the bench power suppl y to t he evaluati onboardi nputvoltagepins. the in duct anc e of thesewires,alongwiththelow-esrc erami cinp ut capaci tor, can cr eate a high q network th at may aff ect converter performance. this prob lem o ft en bec omesapparentintheformofexcess iver ing in g in the output voltage during load transient s which can produce errors in loop phase a nd ga in m ea s - uremen ts. since the inductance of a s hor t pri nted circuitboard(pcb)tracefeedingthein putvo ltage i s signi ficantly l ower than the power lead s f rom t he benchpowersupply,mostactualapplica tio ns don ot exhibi tthisproblem.inapplicationswheret hei npu t powers ourceleadinductancecannotbere du cedt o a level that does not affect the converter perform - anc e,ahighesrtantalumor alumi numelect rolyt ic capaci tor should be placed in parallel wi th the lo w esr,eslbypassinputceramiccapa citor.th ein tr o - duc tionofthehi ghesr capacitordamp ens the h igh qnetw or kandstabilizestheaat1217. aa t1217 600ma,1.2mhz, micropower syn c hr onousstep-u pcon verte r 1217.2007.07.1.0 9 i p eak = + i o ut v o ut v in v i n (v o ut - v i n ) 2l f sw v out ? i l = ; d = = v in (v out - v in ) l f s w v o ut v in d l f s w v out - v in v o ut ? i l i dc = i out v out v in i peak = i dc + ?i l 2
table2.typica lsurfa cemountinductors. partnum ber l (h) maxd cr( m ) rateddccurrent(a) sizew xlxh (mm) 2 .2 123 1.15 sumidacd h28d11/ s 4.7 2 38 0 .75 3x3.3x1.2 1 0 431 0.53 2 .2 140( typ ) 1.12 coiltro nicssd3112 4.7 246 (typ ) 0 .8 3.1x3.1x1.2 1 0 446( typ ) 0.55 2 .2 100 1 tdkv lf3012a 4.7 1 90 0 .74 2.8x2.6x1.2 1 0 410 0.49 2 .2 71.2 1.75 sumidacr 43 4.7 108 .7 1 .15 4.3x4.8x3.5 1 0 182 1.04 2 .2 31.3 2.04 sumidacd rh4d28 4.7 7 2 1 .32 5.0x5.0x3.0 1 0 128 1 tokod53 lc 4 .7 4 5 1.87 5 .0x5.0x3.0 1 0 9 0 1.33 aa t1 217 600ma, 1.2 mhz,micropower syn chron ou ss tep-upconv erte r 10 '(')())' o utput capaci tor theoutputca pacitorlimit sth eout put rippleand p ro - videsh o ldupd uringlarge loa dt rans it ions. a4. 7 ft o 10 f,x5ror x7r,ce ramicca pacitoris sugges ted forth e outpu tcapacit or. typ icallyth erecommend ed capaci tor rangeprovidessuff icient bulk cap acitance tosta bi li ze theou tp ut vo lt ag ed uring larg eload t ran - sit ion s and has the es r and esl charac terist ic s necessar yfor lowo utp ut volta ge ripple . in ad dition, the outp ut vol tage droop during load trans ie nt is dominated by the capacitance of the ceramicoutputca pa citor.du ri nga stepincreasein lo ad cu rrent, the ceramic output capacitor al one sup plies the load current until the l oop responds. withinseveral switchi ngcycles,theloopresponds and the inductor curr ent i ncr eases to match the lo adcur rentdemand .largeroutputcapacitorval - ueshelp toreducethevo ltagedroopduringlarge lo adcurrent transients. e x terna ldi odeselection an ext e rnal scho ttky di od e i s r equir ed when the outputvoltagei sabove4.5v.thesc hottkydiode is op tiona l for o utp ut voltage s 4. 5v, bu t can improve efficiencybyabout 2to3. loaddi sconnectinshutdown inconvent io nalsynch ro nousstep -u pconverters,a conduction pat hexistsfrominpu tto outputthrou gh thebackgate (b odydiode )o fthep-channelmos - fetduringshu tdown.specialapplicati onci rcuitry can disconn ect the loa d from the batter y during shutdown(seefigure1). pcblayout guidance theaat1217typicallyoperatesat1.2mh z. thi sis a considerablyhighfrequencyfordc-dcc onvert er s. pc b lay out is i mportant to guarantee sat isfac to ry performance. it isrecommendedtomake trace sof thep owerl oop,especiallywherethesw itchin gno de is in vol ved, as sho rt and wide as po ssib le. f irs t o f all, th e i nductor, input and output capa citor s hould beascl oseaspossibletothedevice.feedba ck an d shutdo wnc ircuitsshouldavoidtheprox imity ofla rge ac si gnals involvingthepowerinductorand swi tc h - ingnode.theoptionalrectifierdiode(d1infi gu re 1)ca nimproveefficiencyandalleviate the stresso n theintegratedmosfets.thediodesh ouldals ob e closetotheinduc torandthechiptof ormt hesh or t - estposs ibl es witching loop.whilethetwo- la yerp cb showninfigures2 and3isenoughfo rmos tap pli - catio ns, largeandintegralmulti-layerg roun dplane s
aa t1217 600ma,1.2mhz, micropower syn c hr onousstep-u pcon verte r 1217.2007.07.1.0 11 fi gure1 .aat12 17 higheffici encyloadd isconnect applicationc ircuit figure2.aat1217 ev alu ationboardlayout figure3.a at12 17evaluationboardlayout exampletoplayer exampleb ottomlayer areide alforhi ghpo we rapplica tion s. largeareasof co pp erhavelow erre sist ancea nd help to diss ip ate heat. theconver te r's ground shou ld jointh esy stem groun dtowhi chi tsup pliespo we ra tone point only. figure1i sthes ch ematicforahighlyeff ici entl oa d disco nnect appl ication circuit for the aa t12 17 . a n exampl e pcb layo ut for theaat1217 is s hown i n figures2and3. fb vin shdn gnd vout aat 1217 c in 4.7f vin 0.85v l1 4.7h c out 4.7f r1 1.02m ? r2 604k ? vout 3.3v,100ma 1 2 3 4 5 sw 6 d1 mbr0520 r3 510k ? on/off control q1 si2305 ds q2 2n3904 r4 510k ?
order inginformation pack agein formation tso t23-6 alldimensionsinmillimeters. outputvol tage 1 pa ckage marki ng 2 part num ber(ta peandreel ) 3 adj . tsot 23 -6 v z myy aat 1217ica-1.2-t 1 f ixed3. 3v ts ot 23 -6 w amyy aat121 7ica-3.3-t1 f ixed5. 0v ts ot 23 -6 wbmyy aat121 7ica-5.0-t1 aa t1 217 600ma, 1.2 mhz,micropower syn chron ou ss tep-upconv erte r 12 1217.2007.07.1.0 1.pleasecontactsalesforothervoltageoptions. 2.yy=manufacturingdatecode. 3.samplestockisgenerallyheldonpartnumberslistedin bold . p a r t d i m e n s i o n s 0 . 4 0 0 . 1 0 0 . 9 5 b s c 1 . 6 0 b s c 0 . 4 5 0 . 1 5 0 . 2 5 b s c 0 . 1 2 7 b s c d e t a i l " a " 2 . 8 0 b s c 1 . 0 0 0 . 1 0 0 . 0 0 0 + + 0 . 1 0 0 - 0 . 0 0 0 1 . 0 0 + + 1 0 - 0 2 . 9 0 b s c t o p v i e w e n d v i e w d e t a i l " a " s i d e v i e w all analogictech products are offered in pb-free packaging. the term pb-free me ans semiconductor products that are in compliance with current rohs standards, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. for more information, please visit our website at http://www.analogictech.com/pbfree.
aa t1217 600ma,1.2mhz, micropower syn c hr onousstep-u pcon verte r 1217.2007.07.1.0 13 advanced analo gi cte chnolo gies,inc. 8 30e. a rq uesaven ue,sunny vale,ca 9 4085 p hon e(408) 7 3 7- 4600 f ax(4 0 8)73 7- 4 611 advan cedanalogictechnologies, inc. an alo gictech ca nnotassume respon sibili tyforuse o fa nycircuitryotherthancircuitryen ti relyembodie dinananalogicte chprod uct.n ocircuitpatentlicenses, copyr ights,maskwor k rig hts,o rot herin tellectualpropertyrig htsare i mplie d.anal ogicte chreserve stherighttomakechan gestotheirpr oductsorspecifica tionsor todiscont inueanypr oduct orservice with - o ut notice. exceptasprovidedinana logicte ch stermsan dcon dition sofsa le,analogi ctechassumesnoliab ilitywhatsoeve r,a ndanalog ictechdisclaimsanyexpressorim pliedwar - rant yre lat in gtot hesaleand/ or useofan alogi ctechprod uctsi nclud ingl iabilityo rwa rrantiesrelating tofitness for aparticular purpose, mer chantability,orinfringemen tof anypatent, copyrightorot herintellectualpropertyright.in o rder tomi nimize risksassociatedwi th thecu sto mers applicatio ns,adequate design ando pera tingsafeguardsm ustbeprovi dedbythe custome rto minimi zeinherent orproced uralhaza rds.testingan dotherqua litycontrol tech niquesareutilizedtotheextent ana logictechde emsnecessarytosupportthiswarr anty. spe ci fic testingo fall parametersofeach d eviceisn otn ecessa rilyp erformed.ana logictech andthe analog ictechlo goare trad emarksofadvancedanalogictechnologiesincorpora ted. allotherbran da ndproductnamesa ppe aring inthi sdocu menta reregisteredtra dema rksortra dema rksofthe irr espectivehol ders.

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