View MT6305B_7248864.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

mtk confidential release for simcom mtk confidential release for simcom release date: apr , 22 , 200 5 revision: 1.1 confidential information mt6305 b gsm power management sy s tem mediatek free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 2 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice product change notice original product name : mt6305n/ft new identification : MT6305Bn/cy change contents item change type description reason for change 1 new function use pin#3 (original nc pin) to program vcore/vrtc. vc ore/vrtc=1.8v/1.5v as pin#3 is floating. vcore/vrtc=1.2v/1.2v as pin#3 is gnd. provide alternative vcore/vrtc vol t- age. 2 device prote c- tion chrin can be up to 15v but the charger will be off automatically when chrin>vac_limit. the spec. of vac_limit is 8~9 .5v. it can ? t be used with external linear charger. to protect internal d e vice. 3 pin configur a- tion change pin#29 (original nc pin) to vref. better power/ground plan. 4 pin configur a- tion change pin#30 (original vref) to nc pin. it can be connected to a capacitor, gnd or floating. better power/ground plan. 5 pin description remove the vasel (pin44) and vmsel (pin45) inte r nal pull high/low definition. save power. special request on pcb ? it must use x5r - type decoupling capacitor on vtcxo and va ldo outpu ts for good pe r formance against temperature variation. ? in vcore/vrtc=1.8v/1.5v application, no special change is required to use MT6305Bn/cy. it ? s fully compatible with the pcb for mt6305n/ft. if user would like to configure vcore/vrtc=1.2v/1.2v, just tie pin#3 to gnd via a 0 - ohm resistor. free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 3 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice revision history revision date author comments 1.0 feb. 25, 2005 cathy chen first release of MT6305B differences from the data sheet of mt6305 rev.1.4 : 1. add pcn on page 2 2. update abstract on page 5 3. update charger input feature on page 8 4. ordering information on page 8 5. pin configuration on page 8 (pin#3, pin#29, pin#30) 6. add vcore=1.2v spec. (1.1v~1.3v) on page 9 7. add vrtc=1.2v spec. (1.1v~1.3v) on page 10 8. modify reference voltage to 1.170v~1.1 90v on page 10 9. modify reset on delay time per unit cap. to 1~3ms/nf on page 11 10. add valid_chrin maximum chrin voltage spec. (8~9.5v) on page 9 11. modify chr_det on/off threshold to 3.0% on page 11 12. modify gatedrv voh and vol on page 11 13. u pdate electrical characteristics waveform from page 13 to page 21 14. update pin description on page 22 according to the updated pin configuration 15. update fig.1 and fig.3 according to the new pin configuration 16. update the detailed descriptions of vc ore, vrtc and charge detection 17. modify the ldo capacitor selection note in the applications i n- formation section on page 29 18. add one layout guideline note on page 29 1.1 apr. 22, 2005 cathy chen 1. add item3 to item5 in pcn on page 2 2. remove the vasel (pin44) and vmsel (pin45) internal pull high/low in the pin descri p tion on page 22 revision date reviewer comments 1.0 feb. 25, 2005 maxwell hsu first release 1.1 apr. 22, 2005 maxwell hsu revision date leader comments free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 4 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice table of con tents product change notice ................................ ................................ ................................ ................................ ................................ . 2 revision history ................................ ................................ ................................ ................................ ................................ .............. 3 abstract ................................ ................................ ................................ ................................ ................................ ............................. 3 figures index ................................ ................................ ................................ ................................ ................................ ................... 3 table index ................................ ................................ ................................ ................................ ................................ ....................... 3 feature????.????????..???????????????????????????????????.8 general description??????????????????????????????????????????.8 pin configuration??????????.?????????????????????????????????.8 absolute maximum rating????????????????????????????????????.??? 9 electrical characteristics?????????.???????????????????..???????????9 electrical characteristics waveform????.??????????????????????????????13 pin des cription?????????????????????????????????????????.??...22 detailed description overview ??????????????????????????????????..??.23 functional block diagram?? ?????????????????..???????????????..23 low dropout regulator ( ldos ) and reference????????????????.????????.. . 24 sim card interface??????????????????????????????????????...24 vibrator, alerter, led switches???????????????????????????.???..??24 power sequence and protection logic????????????????????????.?????25 battery charger????? ??????????????????????????????..???? .. 25 battery charger flow chart?.???????????????????????????????..?. .. 26 typical application circuit????????????????????????? ??..??????? .. 27 applications information??????????????????????????????.????????? .. 29 external components selection??????..?????????????????.???????.? .. 29 layout guideline????????????????????????.??????..???????? .. 29 package information????????????????????????????????????????? .. 30 tray specification????? ?????????????????..??????????.?????????? . 32 free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 5 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice abstract the MT6305Bn/cy is a power management system chip opt i mized for g sm handsets, especially those based on the mediatek mt62xx system solution . it contains seven ldos, one to power each of the critical gsm sub - blocks. the integrated ldos are designed for low power and low noise, such as va and vtcxo. vcore, vrtc, vm and vsim provide alternative output voltages for system design flexibility. sophisticated controls are available for power - up du r ing battery charging, keypad interface, and rtc alarm. the mt6305 is optimized for maximum battery life, featuring a ground current of only 108 a and 187 a when the phone is in standby and operation respectively. for battery charging, the mt6305 can be used with lit hium ion (li+) and nickel metal hydride ( n imh) batteries. it contains three o pen - drain ou t put switches for led, alerter and vibrator control. the sim interface provides the level shift between sim card and m i- croprocessor. in addition, mt6305 provides othe r features including current limiting , under voltage lock - out protection, deep discharge lockout protection and over temperature prote c tion. MT6305Bn/cy is offered in 48 - pin qfn package. the tiny size and low profile reduce the required board area and incr ease the power density of the whole power system design. free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 6 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice figures index figure 1.functional block diagram???????????????..???..???????????????.23 figure 2.battery char ger flow chart?.??????????????????..????????????..?.26 figure 3.typical application circuit?????????????..?????????????..???????27 free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 7 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice table index table 1. states of mobile handset and l do????????????????????????.??????.25 table 2. charger and voltage detection???????????????????????????????.?28 table 3. package dimension??????????????????????????????.???????31 free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 8 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice g sm power management system features n handles all gsm baseband power manag e- ment n 2.8v to 5.5v input range n charger input up to 15v , automatically term i- nate charging above 9v n seven ldos optimized for specific gsm su b- systems n high operation efficiency and low s tand - by current n li - ion and nimh battery charge function n sim card interface n three open - drain output switches to control the led, alerter and vibr a tor n thermal overload protection n under voltage lock - out protection n over voltage protection n power - on reset and s tart - up timer n 48 - pin qfn package applications n gsm/gprs mobile handsets n basic phone and high - end phone general description the mt6305 is a power management system chip opt i mized for g sm handsets, especially those based on the mediatek mt62xx system soluti on . it contains seven ldos, one to power each of the critical gsm sub - blocks. sophisticated controls are available for power - up during battery charging, keypad interface, and rtc alarm. the mt6305 is optimized for max i- mum battery life, featuring a ground c urrent of only 108 a and 187 a when the phone is in standby and oper a tion respectively. the mt6305 battery charger can be used with lithium ion (li+) and nickel metal hydride ( n imh) batteries. the mt6305 contains three o pen - drain output switches for led, a lerter and vibrator control. the sim interface provides the level shift between sim card and microproce s sor. the mt6305 is available in 48 - pin qfn package. the operating temperature range is from - 25 c to +85c . ordering information order number marking t emp. range package mt6305q1x MT6305Bn/cy - 25c to +85c qfn - 48l pin configuration chrin gatedrv vd_vrtc_sel isense chrcntl chrdet batsns vsim simio simrst simclk simvcc s i m s e l s i o s r s t s c l k d g n d v m v b a t v i o d g n d v r t c r s t c a p leden alerteren vibratoren pwrbb pwrkey srclken vref nc agnd va avbat vtcxo v c o r e v b a t d g n d v m s e l v a s e l b a t d e t b a t u s e l e d p g n d a l e r t e r v i b r a t o r p g n d MT6305Bn/cy 1 2 3 4 5 6 7 8 9 10 11 12 4 8 4 7 4 6 4 5 4 4 4 3 4 2 4 1 4 0 3 9 3 8 3 7 36 35 34 33 32 31 30 29 28 27 26 25 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 r e s e t free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 9 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice absolute maximum ratings chrin and gatedrv relative to gnd. ... - 0.3v to 15 v led, alerter, vibrator and vref relative to gnd ?? ???????..? .. ?? - 0.3v to v bat+0.3v all other pins relative to gnd???? . ?? - 0. 3 v to 7 v operating temperature ranges..? ... ? - 25c to +85c maximum junction temper a ture .?? .. ?.?? +165c storage temperature range.? .. .?. . ? - 65 c to +165 c thermal impedance, q ja (4 layer jedec pcb). .. .23c/w reflow temperature (soldering, 1 0sec).? .. .. . . ..+ 26 0c stresses beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress ra t- ings only, and functional operation of the device at these or any other cond itions beyond those indicated in the operational sections of specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliabi l ity. electrical characteristics (vbat= 3 v - 5.5v, cva=4.7f, c v rtc=0.22 f, c vcore =c v m=cvref=cvtcxo=c v sim=c v io=2.2f, min i mum loads applied on all outputs, unless ot h erwise noted. typical values are at t a =+25c.) parameter condition min typ max unit main controller battery input voltage range 3 --- 5.5 v charger input volta ge range --- --- 15 v valid_chrin maximum chrin voltage charger will terminate charging automaticall y- when chrin is above the voltage 8.0 9.0 9.5 v shutdown supply cu r rent vbat<2.5v 2.5v mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 10 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice electrical characteristics (c ontinued) (vbat= 3 v - 5.5v, cva=4.7f, c v rtc=0.22f, c vcore =c v m=cvref=cvtcxo=c v sim=c v io=2.2f, min i mum loads applied on all outputs, unless ot h erwise noted. typical values are at t a =+25c.) parameter condition min typ max unit line regulation 3. 6 v mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 11 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice electrical characteristics (continued) (vbat= 3 v - 5.5v, cva=4.7f, c v rtc=0.22f, c vcore =c v m=cvref=cvtcxo=c v sim=c v io=2.2f, min i mum loads applied on all outputs, unless ot h erwise noted. typical values are at t a =+25c.) parameter condition min typ max unit reset output high vol t age vio - 0.5 --- --- v reset output low vol t age --- --- 0.2 v reset output current --- 1 --- ma reset on delay time per unit cap. 1 2 3 ms/nf led/alerter/vibrator driver sink current of led driver von<0.5v 150 --- --- ma sink current of alerter driver von<0.5v 300 --- --- ma sink current of vibrator driver von<0.5v 250 --- --- ma battery charger charge output voltage (li - ion battery) batuse=0 4.15 4.2 4.25 v char ge output voltage (nimh battery) batuse=1 5 5.1 5.2 v chr_det on threshold ( chrin - vbat )/vbat , chrin>4v --- 3.0 --- % chr_det off threshold ( chrin - vbat )/vbat , chrin>4v --- 3.0 --- % pre - charge current vbat<1.5v 5 --- 15 m a pre - charging current threshold voltage vbat > 2 v ; uvlo active , r1=0.2 w 5 10 15 mv constant charge current threshold vol t age vbat>3.2v; r1=0.2 w 135 160 185 mv gatedrv output high voltage i= - 0. 1ma vchrin - 1.0v --- --- v gatedrv output low voltage i=0.1ma --- --- 0.9 v gs m interface vih(simclk,simrst) vio - 0.6 --- --- v vil (simclk,simrst) --- --- 0.6 v vol ?? 0.4v, iol=1ma --- --- 0.23 v vilsimio vol ?? 0.4v, iol=0ma --- --- 0.335 v vihsimio , vohsimio iih,ioh= 20a vio - 0.6 --- --- v iilsimio vil=0v --- --- - 0.9 ma volsimio vil=0.4v --- --- 0.42 v simio pull - up resistance to vio 16 20 24 k w interface to 3v sim ca rd volrst i=20a --- --- 0.4 v vohrst i= - 200a 0.9vsim --- --- v volclk i=20a --- --- 0.4 v vohclk i= - 200a 0.9vsim --- --- v vil --- --- 0.4 v vihsio , vohsio i= 20a vsim - 0.4 --- --- v iil vil=0v --- --- - 1 ma vol iol=1ma , simio ?? 0.23v --- --- 0.4 v interface to 1.8v sim card volrst i=20a --- --- 0.2vsim v vohrst i= - 200a 0.9vsim --- --- v volclk i=20a --- --- 0.2vsim v vohclk i= - 200a 0.9vsim --- --- v vil --- --- 0.4 v vihsio , vohsio i= 20a vsim - 0.4 --- --- v iil vil=0v --- --- - 1 ma free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 12 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice electrical characteristics (continued) (vbat= 3 v - 5.5v, cva=4.7f, c v rtc=0.22f, c vcore =c v m=cvref=cvtcxo=c v sim=c v io=2.2f, min i mum loads applied on all outputs, unless ot h erwise noted. typical values are at t a =+25c.) parameter condition min typ max u nit vol iol=1ma , simio ?? 0.23v --- --- 0.4 v sim card interface timing sio pull - up resistance to vsim 8 10 12 k w srst, sio rise/fall time vsim=3/1.8v, load with 30pf --- --- 1 s vsim=3v, clk load with 30pf --- --- 18 ns sclk rise/fall time vsim=1.8 v, clk load with 30pf --- --- 50 ns sclk frequency clk load with 30pf 5 --- --- mhz sclk duty cycle simclk duty=50%, fsimclk=5mhz 47 --- 53 % sclk propogation delay --- 30 50 ns free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 13 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice electrical characteristics waveform (vbat= 3 v - 5.5v, cva=4.7f, c v rtc=0.22 f, c vcore =c v m=cvref=cvtcxo=c v sim=c v io=2.2f, min i mum loads applied on all outputs, unless ot h erwise noted. typical values are at t a =+25c.) 0 40 80 120 160 200 1.768 1.772 1.776 1.780 1.784 1.788 1.792 vbat=3.2v vbat=5.5v vbat=4.2v vbat=3.6v v c o r e 1 8 ( v ) @ t = 3 0 j i core18 (ma) 0 40 80 120 160 200 1.185 1.190 1.195 1.200 1.205 1.210 vbat=3.2v vbat=5.5v vbat=4.2v vbat=3.6v v c o r e 1 2 ( v ) @ t = 3 0 j i core12 (ma) 3.0 3.5 4.0 4.5 5.0 5.5 1.770 1.772 1.774 1.776 1.778 1.780 temp.=30 j v c o r e 1 8 ( v ) @ i c o r e 1 8 = 2 0 0 m a vbat(v) 3.0 3.5 4.0 4.5 5.0 5.5 1.184 1.188 1.192 1.196 1.200 v c o r e 1 2 ( v ) @ i c o r e 1 2 = 2 0 0 m a vbat(v) -40 -20 0 20 40 60 80 100 1.788 1.792 1.796 1.800 1.804 1.808 1.812 1.816 v c o r e 1 8 ( v ) @ v b a t = 3 . 6 v temp() j -40 -20 0 20 40 60 80 100 1.184 1.186 1.188 1.190 1.192 1.194 1.196 1.198 v c o r e 1 2 ( v ) @ v b a t = 3 . 6 v temp() j v core18 vs. i core18 v core12 vs. i core12 v core18 vs. vbat v core18 vs. temp v core12 vs. vbat v core12 vs. temp free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 14 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice electrical characteristics (continued) 0 40 80 120 160 1.788 1.792 1.796 1.800 1.804 1.808 vbat=3.2v vbat=5.5v vbat=4.2v vbat=3.6v v m 1 8 ( v ) @ t = 3 0 j i m18 (ma) 0 40 80 120 160 2.780 2.785 2.790 2.795 2.800 2.805 2.810 vbat=3.2v vbat=5.5v vbat=4.2v vbat=3.6v v m 2 8 ( v ) @ t = 3 0 j i m28 (ma) 3.0 3.5 4.0 4.5 5.0 5.5 1.786 1.788 1.790 1.792 1.794 1.796 1.798 temp.=30 j v m 1 8 ( v ) @ i m 1 8 = 1 5 0 m a vbat(v) 3.0 3.5 4.0 4.5 5.0 5.5 2.780 2.782 2.784 2.786 2.788 2.790 2.792 2.794 temp.=30 j v m 2 8 ( v ) @ i m 2 8 = 1 5 0 m a vbat(v) -40 -20 0 20 40 60 80 100 1.816 1.818 1.820 1.822 1.824 1.826 v m 1 8 ( v ) @ v b a t = 3 . 6 v temp() j -40 -20 0 20 40 60 80 100 2.800 2.805 2.810 2.815 2.820 2.825 2.830 v m 2 8 ( v ) @ v b a t = 3 . 6 v temp() j v m18 vs. i m18 v m28 vs. i m28 v m18 vs. vbat v m28 vs. vbat v m28 vs. temp v m18 vs. temp free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 15 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice electrical characteristics (continued) 0 40 80 120 160 2.780 2.785 2.790 2.795 2.800 2.805 2.810 vbat=5.5v vbat=4.2v vbat=3.6v vbat=3.2v v a ( v ) @ t = 3 0 j i a (ma) 0 5 10 15 20 2.798 2.800 2.802 2.804 2.806 2.808 2.810 vbat=3.2v vbat=5.5v vbat=4.2v vbat=3.6v v t c x o ( v ) @ t = 3 0 j i tcxo (ma) 3.0 3.5 4.0 4.5 5.0 5.5 2.788 2.789 2.790 2.791 2.792 2.793 2.794 2.795 temp.=30 j v a ( v ) @ i a = 1 5 0 m a vbat(v) 3.0 3.5 4.0 4.5 5.0 5.5 2.798 2.799 2.800 2.801 2.802 2.803 2.804 2.805 temp.=30 j v t c x o ( v ) @ i t c x o = 2 0 m a vbat(v) -40 -20 0 20 40 60 80 100 2.792 2.794 2.796 2.798 2.800 2.802 2.804 2.806 v a ( v ) @ v b a t = 3 . 6 v temp() j -40 -20 0 20 40 60 80 100 2.788 2.790 2.792 2.794 2.796 2.798 2.800 v t c x o ( v ) @ v b a t = 3 . 6 v temp() j v tcxo vs. i tcxo v tcxo vs. vbat v tcxo vs. temp v a vs. i a v a vs. vbat v a vs. temp free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 16 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice electrical characteristics (continued) 0 5 10 15 20 1.800 1.804 1.808 1.812 1.816 1.820 vbat=3.2v~5.5v v s i m 1 8 ( v ) @ t = 3 0 j i sim18 (ma) 0 5 10 15 20 3.000 3.005 3.010 3.015 3.020 3.025 3.030 vbat=3.2v vbat=5.5v vbat=4.2v vbat=3.6v v s i m 3 0 ( v ) @ t = 3 0 j i sim30 (ma) 3.0 3.5 4.0 4.5 5.0 5.5 1.790 1.795 1.800 1.805 1.810 1.815 1.820 temp.=30 j v s i m 1 8 ( v ) @ i s i m 1 8 = 2 0 m a vbat(v) 3.0 3.5 4.0 4.5 5.0 5.5 3.012 3.014 3.016 3.018 3.020 3.022 3.024 temp.=30 j v s i m 3 0 ( v ) @ i s i m 3 0 = 2 0 m a vbat(v) -40 -20 0 20 40 60 80 100 1.803 1.804 1.805 1.806 1.807 1.808 1.809 1.810 1.811 v s i m 1 8 v ( v ) @ v b a t = 3 . 6 v temp() j -40 -20 0 20 40 60 80 100 3.002 3.004 3.006 3.008 3.010 3.012 3.014 3.016 v s i m 3 0 ( v ) @ v b a t = 3 . 6 v temp() j v sim1 8 vs. i sim18 v sim30 vs. i sim30 v sim18 vs. vbat v sim30 vs. vbat v sim30 vs. temp v sim18 vs. temp free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 17 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice electrical ch aracteristics (continued) 0 40 80 120 2.800 2.805 2.810 2.815 2.820 2.825 vbat=3.2v vbat=5.5v vbat=4.2v vbat=3.6v v i o ( v ) @ t = 3 0 j i io (ma) 3.0 3.5 4.0 4.5 5.0 5.5 1.200 1.202 1.204 1.206 1.208 1.210 v r t c ( v ) @ i r t c 1 2 @ 0 . 1 m a vbat(v) 3.0 3.5 4.0 4.5 5.0 5.5 2.802 2.803 2.804 2.805 2.806 2.807 2.808 temp.=30 j v i o ( v ) @ i i o = 1 0 0 m a vbat(v) 3.0 3.5 4.0 4.5 5.0 5.5 1.500 1.502 1.504 1.506 1.508 1.510 v r t c ( v ) @ i r t c 1 5 @ 0 . 1 m a vbat(v) -40 -20 0 20 40 60 80 100 2.820 2.824 2.828 2.832 2.836 2.840 v i o ( v ) @ v b a t = 3 . 6 v temp() j -40 -20 0 20 40 60 80 100 1.194 1.195 1.196 1.197 1.198 1.199 1.200 v r t c 1 2 ( v ) @ v b a t = 3 . 6 v temp() j v io vs. i io v io vs. vbat v i o vs. temp v rtc12 vs. temp v rtc15 vs. vbat v rtc12 vs. vbat free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 18 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice electrical characteristics (continued) -40 -20 0 20 40 60 80 100 1.486 1.488 1.490 1.492 1.494 v r t c ( v ) @ v b a t = 3 . 6 v temp() j 3.0 3.5 4.0 4.5 5.0 5.5 1.18010 1.18015 1.18020 1.18025 1.18030 1.18035 1.18040 v r e f ( v ) vbat(v) -40 -20 0 20 40 60 80 100 1.179 1.180 1.181 1.182 1.183 1.184 1.185 v r e f ( v ) @ v b a t = 3 . 6 v temp() j 0.01 0.1 1 10 100 45 50 55 60 65 70 75 80 85 90 vbat@3.8v v tcxo @10ma v a @30ma r i p p l e r e j e c t i o n ( d b ) frequency(khz) 3.0 3.5 4.0 4.5 5.0 5.5 80 100 120 140 160 180 200 220 simvcc=vmsel=h v tcxo , v a off, all others on all output on o p e r a t i o n c u r r e n t ( u a ) vbat(v) 1 2 3 4 5 6 0 10 20 30 40 50 60 s h u t d o w n s u p p l y c u r r e n t ( u a ) vbat(v) v ref vs. vbat v a &v tcxo ripple rejection vs. frequency v ref vs. temp operation current vs. vbat v rtc15 vs. temp shutdown current vs. vbat free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 19 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice electrical characteristics (continued) line transient, min. load line transient, max. load line transient, min load ch1: vbat(offset=3.2v) 200mv/div ch 2 : v a 20mv/div ch 3 : v core18 20mv/di v ch1: vbat(offset=3.2v) 200mv/div ch 2 : v a 20mv/div ch 3 : v core18 20mv/div line transient, max. load ch1: vbat(offset=3.2v) 200mv/div ch 2 : v m28 20mv/div ch 3 : v io 20mv/div ch1: vbat(offset=3.2v) 200mv/div ch 2 : v m28 20mv/div ch 3 : v io 20mv/div line transient, min load ch1: vbat(offset=3.2v) 200mv/div ch 2 : v tcxo 20mv/div ch 3 : v sim30 20mv/div ch1: vbat(offset=3.2v) 200mv/div ch 2 : v tcxo 20mv/div ch 3 : v sim30 20mv/div line transient, max. load free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 20 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice electrical characteristics (continued) v core12 load tra n sient v a load transient v tcxo load tra n sient ch 1 : v core12 50mv/div ch 4 : i v core12 100ma/ div v core18 load tra n sient ch 1 : v core18 50mv/div ch 4 : i v core18 100ma/div ch 4 : i v a 50ma/div ch 1 : v a 50mv/div ch 1 : v tcxo 20mv/div ch 4 : i v tcxo 10ma/div v m18 load transient ch 1 : v m18 20mv/div ch 4 : i v m18 100ma/div v m18 load transient ch 1 : v m28 20mv/div ch 4 : i v m28 100ma/div free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 21 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice electrical characteristics (continued) v sim18 load tra n sient v sim30 load tra n sient ch 1 : v sim18 10mv/div ch 4 : i v sim18 20ma/div ch 1 : v sim30 10mv/div ch 4 : i v sim30 20ma/div free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 22 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice pin description pin name function 1 chrin charger input voltage 2 gatedr v gate drive output 3 vd_vrtc_sel floating or high for vcore/vrtc=1.8v/1.5v, low for vcore/vrtc=1.2v/1.2v 4 isense charger current sense input 5 chrcntl microprocessor control input signal for gate drive , inte r nal pull low to dgnd 6 chrdet charger dete ct output 7 batsns battery input voltage sense 8 vsim sim supply 9 simio non - level - shifted bidirectional d ata i/o 10 simrst non - level - shifted sim reset input, internal pull high to vio 11 simclk non - level - shifted sim clock input 12 simvcc sim enable 13 simsel high for vsim=3.0v, low for vsim=1.8v 14 sio level - shifted sim bidirectional d ata input/output 15 srst level - shifted sim reset output 16 sclk level - shifted sim clock output 17,21,46 dgnd digital ground 18 vm memory supply 19 vbat battery input voltage 20 vio digital io supply 22 v rtc real time clock supply 23 rstcap reset delay time capacitance 24 /reset system reset , low active 25 vtcxo tcxo supply 26 avbat battery input voltage for analog block circuits 27 va analog supply 28 ag nd analog ground 29 vref reference voltage output 30 nc 31 srclken vtcxo and va enable 32 pwrkey power on/off key, internal pull high to vbat 33 pwrbb power on/off signal from microprocessor 34 vibratoren vibrator driver enable, internal pull low to dgnd 35 alerteren alerter driver enable, internal pull low to dgnd 36 leden led driver enable, internal pull low to dgnd 37,40 pgnd power ground 38 vibrator vibrator driver input 39 alerter alerter driver input 41 led led driver input 42 batuse bat tery type selection, high for nimh, low for li - ion, i n ternal pull low to dgnd 43 batdet battery detect input, low for battery connected, internal pull high for battery disco n nected 44 vasel high for va enabled with vtcxo, low for va enabled with vcore 4 5 vmsel high for vm= 2.8 v, low for vm=1.8v 47 vbat battery input voltage 48 v core digital core supply free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 23 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice detailed description overview the mt6305 is a power management chip optimized for use with gsm baseband chipsets in handset applic a- tions. figure 1 show s the block diagram of the mt6305. the mt6305 contains several blocks: n seven low dropout regulator s (core, digital io, a nalog, crystal oscillator, r eal - t ime c lock , memory, sim) n sim card interface n vibrator, alerter, and led drivers n power s e quence and prote ction logic n reset ge n erator n undervol t age lockout n deep di s charge lockout n battery charge r vcore vio vbat vref en dgnd out digital io ldo 20 vbat vref en dgnd out digital core ldo 48 vsim vbat vref en dgnd out sim ldo 8 vbat vref en dgnd out momory ldo 18 vm va vbat vref en agnd out analog ldo 27 vbat vref en dgnd out rtc ldo 22 vrtc vref vbat en agnd out reference 30 vbat vref en agnd out tcxo ldo 25 vtcxo vsel vsel avbat 26 agnd 28 dgnd 17,21,46 ddlo uvlo v b a t 1 9 , 4 7 over temp battery charger sim logic level shifter charger detect 45 vmsel pwrkey 32 pwrbb 33 simvcc 12 chrdet 6 43 batdet 31 srclken 1 chrin gatedrv 2 4 isense 5 chrcntl 7 batsns 42 batuse 44 vasel 13 simsel 14 15 16 sio srst sclk reset generator 1 1 1 0 9 2 4 2 3 3 4 3 5 3 6 3 7 , 4 0 4 1 3 9 3 8 s i m c l k s i m r s t s i m i o r e s e t r s t c a p v i b r a t o r e n a l e r t e r e n l e d e n p g n d l e d v i b r a t o r a l e r t e r chron vcore vio vbat vref en dgnd out digital io ldo 20 vbat vref en dgnd out digital core ldo 48 vsim vbat vref en dgnd out sim ldo 8 vbat vref en dgnd out momory ldo 18 vm va vbat vref en agnd out analog ldo 27 vbat vref en dgnd out rtc ldo 22 vrtc vref vbat en agnd out reference 30 vbat vref en agnd out tcxo ldo 25 vtcxo vsel vsel avbat 26 agnd 28 dgnd 17,21,46 ddlo uvlo v b a t 1 9 , 4 7 over temp battery charger sim logic level shifter charger detect 45 vmsel pwrkey 32 pwrbb 33 simvcc 12 chrdet 6 43 batdet 31 srclken 1 chrin gatedrv 2 4 isense 5 chrcntl 7 batsns 42 batuse 44 vasel 13 simsel 14 15 16 sio srst sclk reset generator 1 1 1 0 9 2 4 2 3 3 4 3 5 3 6 3 7 , 4 0 4 1 3 9 3 8 s i m c l k s i m r s t s i m i o r e s e t r s t c a p v i b r a t o r e n a l e r t e r e n l e d e n p g n d l e d v i b r a t o r a l e r t e r chron fi g ure 1. functional block diagram vd_vrtc_sel 3 vcore 1.8/1.2v vrtc 1.5/1.2v selection 29 free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 24 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice low dropout regulator ( ldos ) and reference the mt6305 integrates seven ldos that are opt i- mized for their given functions by bala ncing quiescent current, dro p out voltage, line/load regulation, ripple rejection, and output noise. digital core ldo (v core ) the digital core ldo is a regulator that could source 2 00ma (max) with 1.8v or 1.2v output voltage s e- lection based on the supply v oltage requirement of the baseband chipset . it supplies the baseband ci r- cuitry in the handset. the ldo is optimized for very low qu i es c ent current. digital io ldo (vio) the digital io ldo is a regulator that could source 1 00ma (max) with 2.8v output volta ge. it supplies the baseband circuitry in the handset. the ldo is opt i- mized for very low quies c ent current and will power up at the same time as the digital core ldo. analog ldo (va) the analog ldo is a regulator that could source 150ma (max) with 2.8v ou tput voltage. it supplies the analog sections of the baseband chipsets. the ldo is optimized for low frequency ripple rejection in order to reject the ripple coming from the rf power ampl i- fier burst frequency at 217hz. tcxo ldo (vtcxo) the tcxo ldo is a re gulator that could source 20ma (max) with 2.8v output voltage. it supplies the temper a- ture compensated crystal oscillator, which needs its own ultra low noise supply and very good ripple reje c tion ratio . rtc ldo (vrtc) the rtc ldo is a regulator that could source 200a (max) with 1.5v or 1.2v output voltage selection based on the system requirement . it charges up a capac i tor - type backup coin cell to run the real - time clock module. the ldo features the reverse current protection and is opt i mized for ultra lo w quiescent current since it is always on except that battery vol t- age is b e low 2.5v. memory ldo (vm) the memory ldo is a regulator that could source 150ma (max) with 1.8v or 2.8v output voltage sele c- tion based on the supply specs of memory chips. it suppl ies the memory circuitry in the handset. the ldo is optimized for very low quiescent current and will power up at the same time as the digital core ldo. sim ldo (vsim) the sim ldo is a regulator that could source 20ma (max) with 1.8v or 3.0v output voltage selection based on the supply specs of subscriber identity modules (sim) card. it supplies the sims in the handset. the ldo is controlled indepe n dently of the others ldo. reference voltage output (vref) the reference voltage output is a low noise, high p srr and high precision reference with a guaranteed accuracy of 1.5% over temperature. it is used as sy s- tem reference in mt6305 internally. however for a c- curate specs of every ldo output voltage, avoid loa d- ing the reference voltage and bypass it to gnd with 100 nf minimum. sim card interface the sim ca rd interface circuitry of mt6305 meets all etsi and imt - 2000 sim interface requirements. it provides level shifting needs for low voltage gsm co n troller to communicate with either 1.8v or 3v sim cards. all sim cards contain a clock input, a reset i n put, and a bi - directional data input/output. the clock and reset inputs to sim cards are level shifted from the supply of digital io (vio) of baseband chi p set to the sim supply (vsim). the bi - directional data bus is i nternal pull high with 20kohm resistor on the contro l- ler side and with 10kohm resistor on the sim side. all pins that connect to the sim card (vsim, srst, sclk, sio) withstand over 5 kv of human body mode esd. in order to ensure proper esd protection, car e- f ul board layout is required. vibrator, alerter, led switches three built - in open - drain output switches drive the vibrator motor, alerter beeper and leds in the han d- set. each switch is controlled by baseband chipset with enable pins. the switch of led can s ink 150ma to drive up to 10 leds simultaneously for backlight. the switch of vibrator can sink 250ma for a vibrator motor. the switch of alerter can sink 300ma to drive the beeper. and all the open - drain output switches are high impedance when di s able. free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 25 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice power sequence and protection logic the mt6305 handles the powering on and off of the handset. it is possible to start the power on s e- quence in three different ways: n pull ing pwrkey low n pull ing pwrbb high n chrin exceeds chr_det threshold pulling pwrkey low i s the normal way of turning on the handset. this will turn on vcore, vio, vm ldos as long as the pwrkey is held low. the vtcxo and va ldos is turned on when srclken is high. the m i- croprocessor then starts and pulls pwrbb high after which pwrkey can be rele ased. pulling pwrbb high will also turn on the handset. this is the case when the alarm in the rtc expires. applying an external supply on chrin will also turn the handset on. if mt6305 is in the uvlo state, a p- plying the adapter will not start up the ldos. table 1 shows states of the handset and the ldos table 1. states of mobile handset and ldo phone state chron - uvlo p wr bb ( ? p wrkey) src lken vrtc vd,v io ,v m v a, vtcxo no battery or vbat < 2.5v x l x x off off off 2.5v < vbat < 3.2v l l x x on off off pr e - charging h l x x on off off charger - on h h x x on on on s witched off l h l x on off off stand - by l h h l on on off active l h h h on on on undervoltage lockout (uvlo) the uvlo function in the mt6305 prevents startup when initial voltage of the ma in battery is below the 3.2v threshold. when the battery voltage is greater than 3.2v, the uvlo comparator trips and the thres h- old is reduced to 2.9v. this allows the handset to start no r mally u n til the battery decays to below 2.9v. once the mt6305 enters uvlo state, it draws very low quiescen t current, typically 45 a. the rtc ldo is still running until the ddlo disables it. in this mode the mt6305 draws 20 a of quiescent current. deep discharge lockout (ddlo) the ddlo in the mt6305 has two functions: l to tu rn off the vrtc ldo. l to shut down the handset when the software fails to turn off the phone when the battery drops below 3.0v. the ddlo will shut down the handset when the battery falls below 2.5 v to prevent further di s- charge and damage to the cells. rese t the mt6305 contains a reset circuit that is active at both power - up and power - down. the reset pin is held low at initial power - up, and the reset delay timer is started. the delay is set by an external capacitor on rstcap: rstcap reset c nf ms 2 t = (1) at power - off, reset will be kept low. overtemperature protection if the die temperature of mt6305 exceeds 165 c, the mt6305 will disable all the ldos except the rtc ldo. once the overtemperature state is resolved, a new power on sequence is re quired to enable the ldos. battery charger the mt6305 battery charger can be used with li - ion and nimh batteries. batuse pin can set mt6305 to fit the battery type. when batuse is set low, li - ion ba t tery is used. when batuse is set high, then nimh battery is used. mt6305 charges the battery in three phases: pre - charging, constant current mode charging, and constant voltage mode charging. fi g ure 2 shows the flow chart of charger behavior. the ci r- cuitry of mt6305 combines with a pmos transistor, diode, curre nt - sense resistor externally to form a si m- ple and low cost linear charger shown in fi gure 3 . mt6305 is available pulsed top - off charging alg o rithm by the chrcntl pin control from baseband chipset. free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 26 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice figure 2. battery charger flow chart no - charging charger detector chrin > batsns vbat > 3.2v pre - charging yes yes batuse=high battery type batuse=low constant current mode pulse charge mode vbat > 4.2v li+ vbat > 5.1v (ov) charger off gatedrv=high vbat < 5.1v yes yes no no no vbat < 4.3v charger off vbat > 4.3v (ov) yes constant voltage mode nimh yes yes no no no no no - charging charger detector chrin > batsns vbat > 3.2v pre - charging yes yes batuse=high battery type batuse=low constant current mode pulse charge mode vbat > 4.2v li+ vbat > 5.1v (ov) charger off gatedrv=high vbat < 5.1v yes yes no no no no no vbat < 4.3v charger off vbat > 4.3v (ov) yes constant voltage mode nimh yes yes no no no no no no free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 27 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice figure 3. typical application circuit vibrator sw enable sim pin of gsm processor battery used battery detect va selection vm selection vcore dgnd c17 2.2 f charger in q1 si3441dy d1 charge control charger detect r1 0.2 w li or nimh battery dgnd dgnd agnd vsim vsim enable vsim slectioin i/o to sim card rst to sim card clk to sim card c2 2.2 f pgnd 1 2 3 4 5 6 7 8 9 10 11 12 chrin gatedrv nc isense chrcntl chrdet batsns vsim simio simrst simclk simvcc v i b r a t o r v c o r e v b a t d g n d v m s e l v a s e l b a t d e t b a t u s e l e d p g n d a l e r t e r p g n d leden alerteren vibratoren pwrbb pwrkey srclken vref nc agnd va avbat vtcxo 36 35 34 33 32 31 30 29 28 27 26 25 4 8 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 1 3 d g n d d g n d s i m s e l s i o s r s t s c l k v m v b a t v i o v r t c r s t c a p r e s e t 4 7 4 6 4 5 4 4 4 3 4 2 4 1 4 0 3 9 3 8 3 7 pgnd r4 100 k led sw alerter sw vibrator sw led sw enable alerter sw enable power on clk on swi sw - pb dgnd c16 2.2 f c15 4.7 f c13 2.2 f c12 0.1 f c11 0.22 f dgnd c4 2.2 f c3 2.2 f dgnd c1 1 f agnd c5 10 f agnd vibrator sw enable sim pin of gsm processor battery used battery detect va selection vm selection vcore dgnd c17 2.2 f charger in q1 si3441dy d1 charge control charger detect r1 0.2 w li or nimh battery dgnd dgnd agnd vsim vsim enable vsim slectioin i/o to sim card rst to sim card clk to sim card c2 2.2 f pgnd 1 2 3 4 5 6 7 8 9 10 11 12 chrin gatedrv nc isense chrcntl chrdet batsns vsim simio simrst simclk simvcc chrin gatedrv nc isense chrcntl chrdet batsns vsim simio simrst simclk simvcc v i b r a t o r v c o r e v b a t d g n d v m s e l v a s e l b a t d e t b a t u s e l e d p g n d a l e r t e r p g n d leden alerteren vibratoren pwrbb pwrkey srclken vref nc agnd va avbat vtcxo 36 35 34 33 32 31 30 29 28 27 26 25 4 8 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 1 3 d g n d d g n d s i m s e l s i o s r s t s c l k v m v b a t v i o v r t c r s t c a p r e s e t d g n d d g n d s i m s e l s i o s r s t s c l k v m v b a t v i o v r t c r s t c a p r e s e t 4 7 4 6 4 5 4 4 4 3 4 2 4 1 4 0 3 9 3 8 3 7 pgnd r4 100 k led sw alerter sw vibrator sw led sw enable alerter sw enable power on clk on swi sw - pb dgnd c16 2.2 f c15 4.7 f c13 2.2 f c12 0.1 f c11 0.22 f dgnd c4 2.2 f c3 2.2 f dgnd c1 1 f agnd c5 10 f agnd vd_vrtc_sel vd_vrtc_sel nc vref c16 1uf c18 1uf agnd free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 28 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice charge detection the mt6305 charger block has a detection circuit that determinates if an adapter has been applied to the chrin pin and senses the chrin voltage. the maximum chrin voltage can be up to 15v but the detection circuit will report invalid_chrin when chrin>9v to protect the charging system. in other words, the charger block will do charging when chrin<=9v but stop charging when chrin>9v. however, appl y ing 9v= 4.3, an ov signal is active and term i nates charging. the disconnection of battery could be detected by batdet pin. batdet is pulled high internally when battery disconnected and term i- nates charging immed i ately. table 2. charger and voltage detection vbat chron chrcntl chrdet - uvlo batuse charger condition any vbat l x l x x no - charging vbat > 3.2v x l x h x no - charging vbat < 3.2v h x l l x pre - charging 3.2v mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 29 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice applications inform ation external components selection input capacitor selection for each of input pins (v bat ) of mt6305, a local b y- pass capacitor is recommended. use a 10f, low esr capacitor. mlcc capacitors provide the best combin a- tion of low esr and small size. using a 1 0f tant a lum capacitor with a small (1f or 2.2f) ceramic in para l lel is an alternative low cost solution. for charger input pin ( chrin ), a bypass 1f ceramic capac i tor is recommended. ldo capacitor selection the digital core, analog, memory ldos require a 4.7f capacitor, the digital io, sim tcxo ldos r e quire a 1f capacitor and the, rtc ldo require a 0.22f c a pacitor. large value capacitor may be used for desired noise or psrr issue. but take consideration of the se t tling time that is acceptable for sys tem application. the mlcc x5r type capacitors must be used with vtcxo and va ldos for good system performance. for other ldos, mlcc x5r type capacitors are also recommended to use. reset capacitor selection reset is held low at power - up until a delay time when ldos are up. the delay is set by an external capacitor on rescap pin. it can be determinated by the eq.(1). a 100nf capacitor will produce a 200ms delay. setting the charge current mt6305 is capable of charging battery. the charging current is progr ammed with an external sense resi s tor, rsen. it is calculated as the eq.(3). if the charge cu r rent is defined, rsen can be found. appropriate sense resistors are available from the fo l- lowing vendors: vishay dale, irc, panasonic. charger fet selection th e pmos fet selection of charger should conside r ate the minimum drain - source breakdown voltage (bvds), the minimum turn - on threshold voltage (vgs), and cu r- rent - handling and power - dissipation qualities. these specifications can be calculated as below: v gs = v chrin - v gatedrv v ds = v chrin - v diode - v sense - vbat v ds r ds(on) = i chr p diss = ( v chrin - v diode - v sense - vbat) x i chr appropriate pmos fets are available from the follo w- ing vendors: siliconix, ir, fairchild. charger diode selection the diode shown in fig ure 3 is used to prevent the ba t- tery from discharging through the pmos?s body d i ode into the charger?s internal circuits. choose a d i ode with a current rating high enough to handle the battery charging current and a voltage rating greater than vbat. la yout guideline use the following general guild - line when designing printed circuit boards: 1. split battery connection to the vbat, avbat pins of mt6305. locate the input capacitor as close to the pins as possible. 2. va and vtcxo capacitors should be returned t o agnd. 3. split the ground connection. use separate traces or planes for the analog, digital, and power grounds (i.e. agnd, dgnd, pgnd pins of mt6305, respe c tively) and tie them together at a single point, pre f erably close to battery return. 4. run a separate t race from the batsns pin to the battery to prevent voltage drop error in the measur e- ment. 5. kelvin - connect the charge current sense resistor by running separate traces to the batsns and isense pins. make sure that the traces are term i nated as close to the re sistor?s body as poss i ble. 6. careful use of copper area, weight, and multi - layer constructi b on will contribute to improve thermal pe r- formance. 7. see fig4. for reference pcb layout. the thermal pad is attached to die substrate, so the thermal planes that th e vias attach the package to must be connected to gnd. figure 4. top layer of reference pcb layout free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 30 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice package information note: 1. die thickness alllowable is 0.305mm maximum (0.012 inches maximum) ? dimension applies to plated terminal an d is measured between 0.2 and 0.25mm from terminal tip. ? the pin #1 identifier must be placed on the top surface of the package by using indentation mark of other feature of package body. ? exact shape and size of this feature is optional. ? applied fo r exposed pad and terminals. exclued embedding part of exposed pad from measuring. ? applied only to terminals. ? exact shape of each corner is optional. 1 48 37 36 25 12 13 24 p 48 x l 48 x b 0.1 m c a b j pin 1 corner exposed die attach pad 0.1 c a b k 0.1 c a b e e/2 0.1 c d1 a e1 b a1 a2 a 0.08 c c c c + ( 0.1016) r ( 0.2) ro.2 (pin1 i.d.) 4 2 d e 3 1 48 7 a3 seating plane 5 0.1 c 0 ~12 6 1 48 37 36 25 12 13 24 p 48 x l 48 x b 0.1 m c a b j pin 1 corner exposed die attach pad 0.1 c a b k 0.1 c a b e e/2 0.1 c d1 a e1 b a1 a2 a 0.08 c c c c + ( 0.1016) r ( 0.2) ro.2 (pin1 i.d.) 4 2 d e 3 1 48 7 a3 seating plane 5 0.1 c 0 ~12 6 free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 31 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice package information (continued) table 3. package dimension dimension in mm dimension in inch symbol min. nom. max. min. nom. max. a 0.80 ----- 0.90 0.031 ----- 0. 035 a1 0 0.02 0.05 0 0.0 0 08 0.002 a2 0. 576 0.615 0.654 0. 023 0.024 0.0 26 a 3 0.203 ref 0.008 ref b 0.18 0.25 0.30 0.00 7 0.010 0.012 c 0.24 0.42 0.60 0.009 0.017 0.024 d 7 bsc 0.276 bsc d1 6.75 bsc 0.266 bsc e 7 bsc 0.276 bsc e1 6.75 bsc 0.266 bsc e 0.5 bsc 0.020 bsc j 5.37 5.47 5 . 5 7 0. 211 0. 215 0. 21 9 k 5.37 5.47 5.57 0.211 0.215 0.219 l 0.3 0 0.40 0. 5 0 0.01 2 0.016 0.0 20 p 45 ref 45 ref r 2.185 2.285 2.385 0.086 0.090 0.094 t aping specification feed direction typical qfn package orientation feed direction typical qfn package orientation package q?ty/reel q?ty/ tray qfn - 48 3 , 0 00 ea 2 6 0 ea free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 32 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice tray specification free datasheet http:///
mtk confidential release for simcom mtk confidential release for simcom MT6305B confidential information mediatek confidential revision 1.1 ? apr. 22 , 200 5 page 33 of 33 ? 2002 mediatek inc. the information contained in this document can be modified without notice tray specification ( continued) free datasheet http:///
free datasheet http:///

▲Up To Search▲

Price & Availability of MT6305B

	To Download MT6305B Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .