1/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. led drivers for lcd backlights multifunction backlight led drivers for small lcd panels (charge pump type) BD6081GU, bd6081gvw description BD6081GU / bd6081gvw is compound led driver which is the most suitable for the cellular phone. main lcd back light led driver (max 4 light), sub lcd back light led driver (max 2 light) , 2 system rgb led drivers, 2ch ldo (2.8v/1.8v) included. this is pmic (power management ic) that is the most suitable for "the indication part" of the cellular phone.a charge pump form is adopted, and a coil is never used for the part dc/dc. this ic achieves compact size with the chip size package (vcsp85h3). [BD6081GU] this ic solves a mounting problem by bga package (sbga063w060). [bd6081gvw] features 1) main lcd back light led driver (max 4 light) 4 lighting / 3 lighting can be chosen (register setting) 2) sub lcd back light led driver (max 2 light) 2 lighting / 1 lighting can be chosen (register setting) 3) rgb led driver (2 system) slope control is built in.(2 system independence can be controlled.) led connection (for g1led,g2led,b 1led,b2led) can be set up in the battery or the dc/dc output.(register setting) led connection (for r1led,r2led) can be set up in the battery only. 4) 2ch series regulator 2.8v output iomax=150ma 1.8v output iomax=150ma(normal mode) 1.8v output low current consumption m ode / normal mode switching is possible. (the outside pin control / register setting) 5) charge pump dc/dc soft start functions over voltage protection (auto-return type) over current protection (auto-return type) 6) thermal shutdown (auto-return type) 7) i 2 c bus fast-mode (max 400khz)writing *this chip is not designed to protect itself against radioactive rays. *this material may be changed on its way to designing. *this material is not the specification. absolute maxi mum ratings (ta=25 ) parameter symbol ratings unit maximum applied voltage vmax 7 v power dissipation BD6081GU pd 1725 note1) mw bd6081gvw pd 1060 note2) mw operating temperatur e range topr -25 +85 storage temperature range tstg -55 +150 cote1)power dissipation deleting is 13.8mw/ , when it?s used in over 25 . (it?s deleting is on the board that is rohm?s standard)) note2)power dissipation deleting is 8.48mw/ , when it?s used in over 25 . (it?s deleting is on the board that is rohm?s standard)) operating conditions (vbat vio, ta=-25~85 ) parameter symbol ratings unit vbat input voltage vbat 2.7 5.5 v vio pin voltage vio 1.65 3.3 v no.11040eat27
technical note 2/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw electrical characteristics (unless otherwise specified, ta=25 , vbat=3.6v, vio=1.8v) parameter symbol limits unit condition min. typ. max. circuit current vbat circuit current 1 ibat1 - 0.1 3.0 a reset=0v, vio=0v vbat circuit current 2 ibat2 - 0.5 3.0 a reset=0v, vio=1.8v vbat circuit current 3 ibat3 - 6.2 9.5 a reg2 low current consumption mode, io=0ma vbat circuit current 4 ibat4 - 100 150 a reg2 normal mode, io=0ma vbat circuit current 5 ibat5 - 140 210 a reg1, reg2 normal mode, io=0ma vbat circuit current 6 ibat6 - 63 95 ma dc/dc x1mode, io=60ma,vbat=4.0v vbat circuit current 7 ibat7 - 95 143 ma dc/dc x1.5mode, io=60ma,vbat=3.6v vbat circuit current 8 ibat8 - 125 188 ma dc/dc x2 mode, io=60ma,vbat=2.7v led driver led current step1 iledstp1 32 step mled1~4, sled1~2 led current step2 iledstp2 64 step r1led, g1led, b1led,r2led, g2led, b2led (with 0ma setting) led maximum setup current 1 imax1 - - 32 ma mled1~4, sled1~2, iset=120k ? led maximum setup current 2 imax2 - - 31.5 ma r1led, g1led, b1led,r2led, g2led, b2led, iset=120k ? led current accurate iled 18 20 22 ma iled=20ma, iset=120k ? led current matching iledmt - 5 10 % between mled1~4 between sled1~2 between r1led, g1led and b1led between r2led, g2led and b2led led off leak current ilkled - - 1.0 a dc/dc(charge pump) output voltage v p vf+0.15 vf+0.2 - v vf is led forward voltage current load iout - - 255 ma vbat 3.2v, vout=4v oscillator frequency fosc 0.8 1.0 1.2 mhz over voltage protection detect voltage ovp - 6.0 6.5 v over current protection detect current ocp - 250 375 ma vout=0v reg1 output voltage vo1 2.716 2.80 2.884 v io=150ma, vbat 3.1v i/o voltage difference vsat1 - 0.2 0.3 v vbat=2.5v, io=150ma load stability vo11 - 10 60 mv io=1~150ma input stability vo12 - 10 60 mv vbat=3.2~5.5v, io=150ma ripple rejection ratio rr1 30 40 - db f=100hz, vin=200mvp-p short circuit current limit ilim01 - 225 450 ma vo=0v discharge resister at off roff1 - 1.0 1.5 k ? reg2 output voltage 1 vo21 1.74 1.8 1.86 v io=150ma (normal mode) output voltage 2 vo22 1.71 1.8 1.89 v io=100 a (low current consumption mode) load stability vo21 - 10 60 mv io=1~150ma input stability vo22 - 10 60 mv vbat=3.2~5.5v, io=150ma ripple rejection ratio rr2 30 40 - db f=100hz, vin=200mvp-p short circuit current limit ilim02 - 225 450 ma vo=0v discharge resister at off roff2 - 1.0 1.5 k ?
technical note 3/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw electrical characteristics (unless otherwise specified, ta=25 , vbat=3.6v, vio=1.8v) parameter symbol limits unit condition min. typ. max. i 2 c input (sda, scl) low level input voltage vil -0.3 - 0.25 vio v high level input voltage vih 0.75 vio - vbat+0.3 v hysteresis of schmitt trigger input vhys 0.05 vio - - v low level output voltage (sda) at 3ma sink current vol 0 - 0.3 v input current each i/o pin lin -10 - 10 a input voltage = 0.1vio~0.9vio reset, rgb1cnt, rgb2cnt low level input voltage vil -0.3 - 0.25 vio v high level input voltage1 vih1 0.75 vio - vbat+0.3 v reset pin high level input voltage2 vih2 0.75 vio - vio+0.3 v rgb1cnt, rgb2cnt pin input current each i/o pin1 iin -10 - 10 a input voltage = 0.1vio~0.9vio,reset pin input current each i/o pin2 iin - 6 15 a input voltage = .9vio ,rgb1cnt, rgb2cnt pin reg2en, reg2md low level input voltage vil -0.3 - 0.3 v high level input voltage vih 1.4 - vbat,+0.3 v input current each i/o pin iin - 6 15 a vin=1.8v power dissipation (on the rohm?s standard board) BD6081GU bd6081gvw fig.1 fig.2 information of the rohm?s standard board information of the rohm?s standard board material: glass-epoxy material: glass-epoxy size: 50mm58mm1.75mm (8 layer) size: 114.3mm76.2mm1.6mm pattern of the board: refer to it that goes later. 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0 25 50 75 100 125 150 ta power dissipation w) 1725mw 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0 25 50 75 100 125 150 ta power dissipation w) 1060mw
technical note 4/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw block diagram / application circuit example fig.3 block diagram / application circuit example c2p c1p t1 t2 t3 t4 reg1 2.8v io=150ma reg2 1.8v io=150ma scl sd a mled1 4 charge pump vbatcp vio reset i/o level shift i 2 c control c1n g1led b1led r1led vbat 1 f reg1o reg2o iref refgnd rgb1 led dgnd tsd vbatreg iset sub lcd back light main lcd back light blgnd reggnd cref x1 / x1.5 / x2 vref vbat1 charge pump mode control sled1 2 vout voutm ovp 1 f c2n cpgnd slope control (rgb1) led terminal voltage feedback 1 f (10v) 1 f (10v) rgb1cnt vbat2 rgbgnd g2led b2led r2led slope control (rgb2) rgb2cnt rgb2 led reg2md reg2en vbat register control testi1 testi2 testo1 testo2 register control external control external control 120k ? 0.1f 1 f (10v)
technical note 5/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw pin arrangement [bottom view BD6081GU total: 48ball there is no ball only in c3 for index. bd6081gvw total: 63ball there is no ball only in c1 for index. ?-? means nc pin (non connect to internal circuit) g t4 vbat1 reg2o vbatreg reggnd v io t3 f refgnd r1led cref reg1o reg2md rgb1cnt reset e g1led b1led iset reg2en rgb2cnt sda dgnd d rgbgnd r2led testi1 testi2 scl v outm v out c g2led b2led index testo2 testo1 c1p c2p b sled1 blgnd mled2 mled4 cpgnd c1n vbatcp a t1 sl ed2 ml ed1 ml ed3 v ba t2 c2 n t2 1234567 h t2 c1 p c2 p - - s da res et t3 g c1n - - voutm testo1 scl rgb2cnt vio f cpgnd c2n testi1 v out dgnd rgb1cnt testo2 reg2md e mled3 mled4 vbat2 vbatcp - reg2en reggnd - d ml ed2 - ml ed1 - - reg1 o vbatreg - c (index) blgnd b2led - - testi2 cref reg2o b sled2 sled1 r2led - - refgnd -vbat1 a t1 g2led rgbgnd b1led g1led r1led iset t4 12345678
technical note 6/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw package BD6081GU vcsp85h3 csp small package size : 3.90mm3.90mm(a difference in pu blic: x and y, together, 0.1mm) height 1.0mm max a ball pitch : 0.5mm bd6081 lot no.
technical note 7/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw package bd6081gvw sbga063w060 size : 6.0mm6.0mm(a difference in pu blic: x and y, together, 0.1mm) height 0.9mm max a ball pitch : 0.65mm bd6081 lot no.
technical note 8/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw pin functions no pin no. pin name i/o input level esd diode functions equivalent circuit diagra m BD6081GU bd6081gvw for power for ground 1 b7 e4 vbatcp - - - gnd battery is connected a 2 g2 b8 vbat1 - - - gnd battery is connected a 3 a5 e3 vbat2 - - - gnd battery is connected a 4 g4 d7 vbatreg - - - gnd battery is connected a 5 a1 a1 t1 - - - gnd test pin (short to gnd) a 6 a7 h1 t2 - - - gnd test pin (short to gnd) a 7 g7 h8 t3 - - vbat gnd test pin (short to gnd) j 8 g1 a8 t4 - - vbat gnd test pin (short to gnd) j 9 f3 c7 cref o - vbat gnd reference voltage output p 10 g6 g8 vio - - vbat gnd i/o voltage source is connected c 11 f7 h7 reset i vio vbat gnd reset input (l: reset, h: reset cancel) h 12 e6 h6 sda i vio vbat gnd i 2 c data input i 13 d5 g6 scl i vio vbat gnd i 2 c clock input h 14 b5 f1 cpgnd - - vbat - ground b 15 f1 b6 refgnd - - vbat - ground b 16 g5 e7 reggnd - - vbat - ground b 17 b2 c2 blgnd - - vbat - ground b 18 d1 a3 rgbgnd - - vbat - ground b 19 e7 f5 dgnd - - vbat - ground b 20 b6 g1 c1n i/o - vbat gnd charge pump capacitor is connected f 21 c6 h2 c1p i/o - - gnd charge pump capacitor is connected g 22 a6 f2 c2n i/o - vbat gnd charge pump capacitor is connected f 23 c7 h3 c2p i/o - - gnd charge pump capacitor is connected g 24 d7 f4 vout o - - gnd charge pump output pin a 25 d6 g4 voutm o - - gnd charge pump output pin output pin a 26 e3 a7 iset i - vbat gnd led standard current o 27 f4 d6 reg1o o - vbat gnd reg1 output pin q 28 g3 c8 reg2o o - vbat gnd reg2 output pin q 29 a3 d3 mled1 i - vbat gnd main lcd back light led is connected 1 d 30 b3 d1 mled2 i - vbat gnd main lcd back light led is connected 2 d 31 a4 e1 mled3 i - vbat gnd main lcd back light led is connected 3 d 32 b4 e2 mled4 i - vbat gnd main lcd back light led is connected 4 d 33 b1 b2 sled1 i - vbat gnd sub lcd back light led is connected 1 d 34 a2 b1 sled2 i - vbat gnd sub lcd back light led is connected 2 d 35 f2 a6 r1led i - vbat gnd red led1 is connected d 36 e1 a5 g1led i - vbat gnd green led1 is connected d 37 e2 a4 b1led i - vbat gnd blue led1 is connected d 38 d2 b3 r2led i - vbat gnd red led2 is connected d 39 c1 a2 g2led i - vbat gnd green led2 is connected d 40 c2 c3 b2led i - vbat gnd blue led2 is connected d 41 f6 f6 rgb1cnt i vio vio gnd rgb1 led external on/off synchronism pin k 42 e5 g7 rgb2cnt i vio vio gnd rgb2 led external on/off synchronism pin k 43 e4 e6 reg2en i (vbat) vbat gnd reg2 on/off control pin (l: off, h: on) l 44 f5 f8 reg2md i (vbat) vbat gnd reg2 mode control pin (l: low current consumption, h: normal) l 45 d3 f3 testi1 i - vbat gnd test input pin 1 (short to gnd) h 46 d4 c6 testi2 i - vbat gnd test input pin 2 (short to gnd) h 47 c5 g5 testo1 o - vbat gnd test output pin 1 (open) m 48 c4 f7 testo2 o - vbat gnd test output pin 2 (open) n 49 - 63 - (other) nc - - - - non connect pin - the led pin which isn't used is to shor t-circuit to the ground. but, the setup of a register concerned with led that isn?t us ed is prohibited. total: functional 48pin 48 balls (BD6081GU) 63 balls (bd6081gvw)
technical note 9/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw equivalent circuit diagram vbat c a vbat b e vbat d vbat f g vio vbat h vio vbat i vio vbat j vbat vbat l vbat vbat m vbat n vbat vbat q vbat vbat p vio vio k vbat o
technical note 10/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw i 2 c bus format the writing/reading operation is based on the i 2 c slave standard. ? slave address a7 a6 a5 a4 a3 a2 a1 w 1 1 1 0 1 1 0 0 ? bit transfer scl transfers 1-bit data during h. scl cannot change signal of sda during h at the time of bit transfer. if sda changes while scl is h, start conditions or stop conditions will occur and it will be interpreted as a control signal. sda scl data line stable; data valid change of data allowed ? start and stop condition when sda and scl are h, data is not transferred on the i 2 c- bus. this condition indicates, if sda changes from h to l while scl has been h, it will become start (s) conditions, and an access start, if sda changes from l to h while scl has been h, it will become stop (p) conditions and an access end. sda scl s p start condition stop condition ? acknowledge it transfers data 8 bits each after the occurrence of start condition. a transmitter opens sda after transfer 8bits data, and a receiver returns the acknowledge signal by setting sda to l. 12 89 data output by transmitter data output by receiver acknowledge not acknowledge s start condition clock pulse for acknowledgement scl from maste r
technical note 11/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw ? writing protocol a register address is transferred by the next 1 byte that transferred the slave address and the write-in command. the 3rd byte writes data in the internal register written in by the 2nd byte, and after 4th byte or, the increment of register address is carried out automatically. however, when a register address turns into the last address (1ah), it is set to 00h by the next transmission. after the transmission end, the increment of the address is carried out. s a a a p register address slave address from master to slave from slave to master r/w=0(write) data a d7 d6 d5 d4 d3 d2 d1 d0 d7 d6 d5 d4 d3 d2 d1 d0 a 7 a 6 a 5 a 4 a 3 a 2 a 1 a 0 0 x x x x x x x *1 *1 data a =acknowledge(sd a low) a =not acknowledge(sda high) s=start condition p=stop condition *1: write timing register address increment register address _ timing diagram sda s cl t su;dat t low s sr p s t buf t hd;sta t su;sta t high t hd;sta t hd;dat t su;sto electrical characteristics(unless otherwise specified, ta=25 , vbat=3.6v, vio=1.8v) parameter symbol standard-mode fast-mode unit min. typ. max. min. typ. max. i 2 c bus format scl clock frequency f scl 0 - 100 0 - 400 khz low period of the scl clock t low 4.7 - - 1.3 - - s high period of the scl clock t high 4.0 - - 0.6 - - s hold time (repeated) start condition after this period, the first clock is generated t hd;sta 4.0 - - 0.6 - - s set-up time for a repeated start condition t su;sta 4.7 - - 0.6 - - s data hold time t hd;dat 0 - 3.45 0 - 0.9 s data set-up time t su;dat 250 - - 100 - - ns set-up time for stop condition t su;sto 4.0 - - 0.6 - - s bus free time between a stop and start condition t buf 4.7 - - 1.3 - - s
technical note 12/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw register list address register data function d7 d6 d5 d4 d3 d2 d1 d0 00h - - - - - - - sftrst software reset 01h - - reg2nml reg2pd - - - reg1pd control ldo 02h - - sledsel sleden - - mledsel mleden control back light 03h - - - imled4 imled3 imled2 imled1 imled0 main back light current value 04h - - - isled4 isled3 isled2 isled1 isled0 sub back light current value 05h - b2ledmd g2ledmd rgb2sta - b1ledmd g1ledmd rgb1sta control rgb1, rgb2 led setting gb led connection 06h rgb1md1 rgb1md0 b1ledpl g1ledpl r1ledpl b1leden g1leden r1leden control rgb1 led 07h rgb1wt1tm3 rgb1wt1tm2 rgb1wt1tm1 rgb1 wt1tm0 rgb1wt2tm3 rgb1wt2tm2 rgb1wt2tm1 rgb1wt2tm0 rgb1 on time setting 08h rgb1sl1 step3 rgb1sl1 step2 rgb1sl1 step1 rgb1sl1 step0 rgb1sl2 step3 rgb1sl2 step2 rgb1sl2 step1 rgb1sl2 step0 rgb1 slope 1step time setting 09h - - - - - rgb1slnum2 rgb1slnum1 rgb1slnum0 rgb1 slope step number setting 0ah - - i1r1led5 i1r1led4 i1r1led3 i1r1led2 i1r1led1 i1r1led0 r1 led current value1 0bh - - idltr1led5 idltr1led4 idltr1led3 idltr1led2 idltr1led1 idltr1led0 current value for r1 led current step 0ch - - i1g1led5 i1g1led4 i1g1led3 i1g1led2 i1g1led1 i1g1led0 g1 led current value1 0dh - - idltg1led5 idltg1led4 idltg1led3 idltg1led2 idltg1led1 idltg1led0 current value for g1 led current step 0eh - - i1b1led5 i1b1led4 i1b1led3 i1b1led2 i1b1led1 i1b1led0 b1 led current value1 0fh - - idltb1led5 idltb1led4 idltb1led3 idltb1led2 idltb1led1 idltb1led0 current value for b1 led current step 10h rgb2md1 rgb2md0 b2ledpl g2ledpl r2ledpl b2leden g2leden r2leden control rgb2 led 11h rgb2wt1tm3 rgb2wt1tm2 rgb2wt1tm1 rgb2 wt1tm0 rgb2wt2tm3 rgb2wt2tm2 rgb2wt2tm1 rgb2wt2tm0 rgb2 on time setting 12h rgb2sl1 step3 rgb2sl1 step2 rgb2sl1 step1 rgb2sl1 step0 rgb2sl2 step3 rgb2sl2 step2 rgb2sl2 step1 rgb2sl2 step0 rgb2 slope 1step time setting 13h - - - - - rgb2slnum2 rgb2slnum1 rgb2slnum0 rgb2 slope step number setting 14h - - i1r2led5 i1r2led4 i1r2led3 i1r2led2 i1r2led1 i1r2led0 r2 led current value1 15h - - idltr2led5 idltr2led4 idltr2led3 idltr2led2 idltr2led1 idltr2led0 current value for r2 led current step 16h - - i1g2led5 i1g2led4 i1g2led3 i1g2led2 i1g2led1 i1g2led0 g2 led current value1 17h - - idltg2led5 idltg2led4 idltg2led3 idltg2led2 idltg2led1 idltg2led0 current value for g2 led current step 18h - - i1b2led5 i1b2led4 i1b2led3 i1b2led2 i1b2led1 i1b2led0 b2 led current value1 19h - - idltb2led5 idltb2led4 idltb2led3 idltb2led2 idltb2led1 idltb2led0 current value for b2 led current step 1ah - - - - - - rgb2mel rgb1mel rgb1, rgb2 led external on/off control 1dh reserved for test 1eh reserved for test 1fh reserved for test input "0? for "-". prohibit to accessing the address that isn?t mentioned and the register for test.
technical note 13/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw register map address 00h bit name initial function 0 1 d7 - - - - d6 - - - - d5 - - - - d4 - - - - d3 - - - - d2 - - - - d1 - - - - d0 sftrst 0 reset cancel reset address 01h bit name initial function 0 1 d7 - - - - d6 - - - - d5 reg2nml 0 reg2 low current consumption mode reg2 normal mode d4 reg2pd 0 reg2 power off reg2 power on d3 - - - - d2 - - - - d1 - - - - d0 reg1pd 0 reg1 power off reg1 power on address 02h bit name initial function 0 1 d7 - - - - d6 - - - - d5 sledsel 0 2 lights on (sled1~2) 1 lights on (sled1) d4 sleden 0 sub back light off sub back light on d3 - - - - d2 - - - - d1 mledsel 0 4 lights on (mled1~4) 3 lights on (mled1~3) d0 mleden 0 main back ligh t off main back light on
technical note 14/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw address 03h bit name initial function 0 1 d7 - - - - d6 - - - - d5 - - - - d4 imled4 0 d3 imled3 0 imled4 imled3 imled2 imled1 imled0 current value d2 imled2 0 0 0 0 0 0 1ma d1 imled1 0 0 0 0 0 1 2ma d0 imled0 0 0 0 0 1 0 3ma ? ? ? ? ? 1ma step ? ? ? ? ? ? ? ? ? ? 1 1 1 0 1 30ma 1 1 1 1 0 31ma 1 1 1 1 1 32ma when 120k ? is connected to iset pin. address 04h bit name initial function 0 1 d7 - - - - d6 - - - - d5 - - - - d4 isled4 0 d3 isled3 0 isled4 isled3 isled2 isled1 isled0 current value d2 isled2 0 0 0 0 0 0 1ma d1 isled1 0 0 0 0 0 1 2ma d0 isled0 0 0 0 0 1 0 3ma ? ? ? ? ? 1ma step ? ? ? ? ? ? ? ? ? ? 1 1 1 0 1 30ma 1 1 1 1 0 31ma 1 1 1 1 1 32ma when 120k ? is connected to iset pin.
technical note 15/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw address 05h bit name initial function 0 1 d7 - - - - d6 b2ledmd 0 b2led connection =vbat b2led connection =vout d5 g2ledmd 0 g2led connection =vbat g2led connection =vout d4 rgb2sta 0 rgb2 led lighting stop rgb2 led lighting start d3 - - - - d2 b1ledmd 0 b1led connection =vbat b1led connection =vout d1 g1ledmd 0 g1led connection =vbat g1led connection =vout d0 rgb1sta 0 rgb1 led lighting stop rgb1 led lighting start address 06h bit name initial function 0 1 d7 rgb1md1 0 refer to the following refer to the following d6 rgb1md0 0 refer to the following refer to the following d5 b1ledpl 0 refer to the following refer to the following d4 g1ledpl 0 refer to the following refer to the following d3 r1ledpl 0 refer to the following refer to the following d2 b1leden 0 b1 led off b1 led on d1 g1leden 0 g1 led off g1 led on d0 r1leden 0 r1 led off r1 led on rgb1md1 rgb1md0 *1ledpl mode 0 0 0 / 1 normal 1 0 1 0 / 1 normal 2 1 0 0 blink 1 1 blink 2 1 1 0 slope 1 1 slope 2 *1ledpl : r1ledpl, g1ledpl, b1ledpl is shown. address 07h bit name initial function d7 rgb1wt1tm3 0 d6 rgb1wt1tm2 0 rgb1wt1tm3 rgb1wt1tm2 rg b1wt1tm1 rgb1wt1tm0 current light time d5 rgb1wt1tm1 0 0 0 0 0 0.256s d4 rgb1wt1tm0 0 0 0 0 1 0.512s ? ? ? ? ? ? ? ? ? ? ? ? 0.256s step 1 1 0 1 3.584s 1 1 1 0 3.84s 1 1 1 1 4.096s lighting time depends on internal osc frequency. d3 rgb1wt2tm3 0 d2 rgb1wt2tm2 0 rgb1wt2tm3 rgb1wt2tm2 rg b1wt2tm1 rgb1wt2tm0 current light time d1 rgb1wt2tm1 0 0 0 0 0 0.256s d0 rgb1wt2tm0 0 0 0 0 1 0.512s ? ? ? ? ? ? ? ? ? ? ? ? 0.256s step 1 1 0 1 3.584s 1 1 1 0 3.84s 1 1 1 1 4.096s lighting time depends on internal osc frequency.
technical note 16/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw address 08h bit name initial function d7 rgb1sl1step3 0 d6 rgb1sl1step2 0 rgb1sl1 step3 rgb1sl1 step2 rgb1sl1 step1 rgb1sl1 step0 current light time d5 rgb1sl1step1 0 0 0 0 0 4ms d4 rgb1sl1step0 0 0 0 0 1 8ms ? ? ? ? ? ? ? ? ? ? ? ? 4ms step 1 1 0 1 56ms 1 1 1 0 60ms 1 1 1 1 64ms lighting time depends on internal osc frequency. d3 rgb1sl2step3 0 d2 rgb1sl2step2 0 rgb1sl2 step3 rgb1sl2 step2 rgb1sl2 step1 rgb1sl2 step0 current light time d1 rgb1sl2step1 0 0 0 0 0 4ms d0 rgb1sl2step0 0 0 0 0 1 8ms ? ? ? ? ? ? ? ? ? ? ? ? 4ms step 1 1 0 1 56ms 1 1 1 0 60ms 1 1 1 1 64ms lighting time depends on internal osc frequency. address 09h bit name initial function 0 1 d7 - - - - d6 - - - - d5 - - - - d4 - - - - d3 - - d2 rgb1slnum2 0 d1 rgb1slnum1 0 rgb1slnum2 rgb1slnum1 rgb1slnum0 step d0 rgb1slnum0 0 0 0 0 1 step 0 0 1 2 step 0 1 0 4 step 0 1 1 8 step 1 0 0 16 step 1 0 1 32 step 1 1 0 64 step 1 1 1 (prohibited)
technical note 17/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw address 0ah bit name initial function 0 1 d7 - - - - d6 - - - - d5 i1r1led5 0 d4 i1r1led4 0 i1r1 led5 i1r1 led4 i1r1 led3 i1r1 led2 i1r1 led1 i1r1 led0 current value d3 i1r1led3 0 0 0 0 0 0 0 0ma d2 i1r1led2 0 0 0 0 0 0 1 0.5ma d1 i1r1led1 0 0 0 0 0 1 0 1ma d0 i1r1led0 0 ? ? ? ? ? ? 0.5ma step ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 1 1 1 0 1 30.5ma 1 1 1 1 1 0 31ma 1 1 1 1 1 1 31.5ma when 120k ? is connected to iset pin. address 0bh < current value for r1 led current step> bit name initial function 0 1 d7 - - - - d6 - - - - d5 idltr1led5 0 d4 idltr1led4 0 idltr1 led5 idltr1 led4 idltr1 led3 idltr1 led2 idltr1 led1 idltr1 led0 current value d3 idltr1led3 0 0 0 0 0 0 0 0ma d2 idltr1led2 0 0 0 0 0 0 1 0.5ma d1 idltr1led1 0 0 0 0 0 1 0 1ma d0 idltr1led0 0 ? ? ? ? ? ? 0.5ma step ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 1 1 1 0 1 30.5ma 1 1 1 1 1 0 31ma 1 1 1 1 1 1 31.5ma when 120k ? is connected to iset pin.
technical note 18/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw address 0ch bit name initial function 0 1 d7 - - - - d6 - - - - d5 i1g1led5 0 d4 i1g1led4 0 i1g1 led5 i1g1 led4 i1g1 led3 i1g1 led2 i1g1 led1 i1g1 led0 current value d3 i1g1led3 0 0 0 0 0 0 0 0ma d2 i1g1led2 0 0 0 0 0 0 1 0.5ma d1 i1g1led1 0 0 0 0 0 1 0 1ma d0 i1g1led0 0 ? ? ? ? ? ? 0.5ma step ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 1 1 1 0 1 30.5ma 1 1 1 1 1 0 31ma 1 1 1 1 1 1 31.5ma when 120k ? is connected to iset pin. address 0dh < current value for g1 led current step > bit name initial function 0 1 d7 - - - - d6 - - - - d5 idltg1led5 0 d4 idltg1led4 0 idltg1 led5 idltg1 led4 idltg1 led3 idltg1 led2 idltg1 led1 idltg1 led0 current value d3 idltg1led3 0 0 0 0 0 0 0 0ma d2 idltg1led2 0 0 0 0 0 0 1 0.5ma d1 idltg1led1 0 0 0 0 0 1 0 1ma d0 idltg1led0 0 ? ? ? ? ? ? 0.5mastep ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 1 1 1 0 1 30.5ma 1 1 1 1 1 0 31ma 1 1 1 1 1 1 31.5ma when 120k ? is connected to iset pin.
technical note 19/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw address 0eh bit name initial function 0 1 d7 - - - - d6 - - - - d5 i1b1led5 0 d4 i1b1led4 0 i1b1 led5 i1b1 led4 i1b1 led3 i1b1 led2 i1b1 led1 i1b1 led0 current value d3 i1b1led3 0 0 0 0 0 0 0 0ma d2 i1b1led2 0 0 0 0 0 0 1 0.5ma d1 i1b1led1 0 0 0 0 0 1 0 1ma d0 i1b1led0 0 ? ? ? ? ? ? 0.5ma step ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 1 1 1 0 1 30.5ma 1 1 1 1 1 0 31ma 1 1 1 1 1 1 31.5ma when 120k ? is connected to iset pin. address 0fh < current value for b1 led current step > bit name initial function 0 1 d7 - - - - d6 - - - - d5 idltb1led5 0 d4 idltb1led4 0 idltb1 led5 idltb1 led4 idltb1 led3 idltb1 led2 idltb1 led1 idltb1 led0 current value d3 idltb1led3 0 0 0 0 0 0 0 0ma d2 idltb1led2 0 0 0 0 0 0 1 0.5ma d1 idltb1led1 0 0 0 0 0 1 0 1ma d0 idltb1led0 0 ? ? ? ? ? ? 0.5ma step ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 1 1 1 0 1 30.5ma 1 1 1 1 1 0 31ma 1 1 1 1 1 1 31.5ma when 120k ? is connected to iset pin.
technical note 20/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw address 10h bit name initial function 0 1 d7 rgb2md1 0 refer to following refer to following d6 rgb2md0 0 refer to following refer to following d5 b2ledpl 0 refer to following refer to following d4 g2ledpl 0 refer to following refer to following d3 r2ledpl 0 refer to following refer to following d2 b2leden 0 b2 led off b2 led on d1 g2leden 0 g2 led off g2 led on d0 r2leden 0 r2 led off r2 led on rgb2md1 rgb2md0 *2ledpl mode 0 0 0 / 1 normal 1 0 1 0 / 1 normal 2 1 0 0 blink 1 1 blink 2 1 1 0 slope 1 1 slope 2 *2ledpl : r2ledpl, g2ledpl, b2ledpl is shown. address 11h bit name initial function d7 rgb2wt1tm3 0 d6 rgb2wt1tm2 0 rgb2wt1 tm3 rgb2wt1 tm2 rgb2wt1 tm1 rgb2wt1 tm0 current on time setting d5 rgb2wt1tm1 0 0 0 0 0 0.256s d4 rgb2wt1tm0 0 0 0 0 1 0.512s ? ? ? ? ? ? ? ? ? ? ? ? 0.256s step 1 1 0 1 3.584s 1 1 1 0 3.845s 1 1 1 1 4.096s lighting time depends on internal osc frequency. d3 rgb2wt2tm3 0 d2 rgb2wt2tm2 0 rgb2wt2 tm3 rgb2wt2 tm2 rgb2wt2 tm1 rgb2wt2 tm0 current on time setting d1 rgb2wt2tm1 0 0 0 0 0 0.256s d0 rgb2wt2tm0 0 0 0 0 1 0.512s ? ? ? ? ? ? ? ? ? ? ? ? 0.256s step 1 1 0 1 3.584s 1 1 1 0 3.845s 1 1 1 1 4.096s lighting time depends on internal osc frequency.
technical note 21/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw address 12h bit name initial function d7 rgb2sl1step3 0 d6 rgb2sl1step2 0 rgb2sl1step3 rgb2sl1step2 rgb2sl1step1 rgb2sl1step0 current on time setting d5 rgb2sl1step1 0 0 0 0 0 4ms d4 rgb2sl1step0 0 0 0 0 1 8ms ? ? ? ? ? ? ? ? ? ? ? ? 4ms step 1 1 0 1 56ms 1 1 1 0 60ms 1 1 1 1 64ms lighting time depends on internal osc frequency. d3 rgb2sl2step3 0 d2 rgb2sl2step2 0 rgb2sl2step3 rgb2sl2step2 rgb2sl2step1 rgb2sl2step0 current on time setting d1 rgb2sl2step1 0 0 0 0 0 4ms d0 rgb2sl2step0 0 0 0 0 1 8ms ? ? ? ? ? ? ? ? ? ? ? ? 4ms step 1 1 0 1 56ms 1 1 1 0 60ms 1 1 1 1 64ms lighting time depends on internal osc frequency. address 13h bit name initial function 0 1 d7 - - - - d6 - - - - d5 - - - - d4 - - - - d3 - - d2 rgb2slnum2 0 d1 rgb2slnum1 0 rgb2slnum2 rgb2slnum1 rgb2slnum0 step d0 rgb2slnum0 0 0 0 0 1 step 0 0 1 2 step 0 1 0 4 step 0 1 1 8 step 1 0 0 16 step 1 0 1 32 step 1 1 0 64 step 1 1 1 (prohibited)
technical note 22/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw address 14h bit name initial function 0 1 d7 - - - - d6 - - - - d5 i1r2led5 0 d4 i1r2led4 0 i1r2led5 i1r2led4 i1r2led3 i1r2led2 i1r2led1 i1r2led0 current value d3 i1r2led3 0 0 0 0 0 0 0 0ma d2 i1r2led2 0 0 0 0 0 0 1 0.5ma d1 i1r2led1 0 0 0 0 0 1 0 1ma d0 i1r2led0 0 ? ? ? ? ? ? 0.5ma step ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 1 1 1 0 1 30.5ma 1 1 1 1 1 0 31ma 1 1 1 1 1 1 31.5ma when 120k ? is connected to iset pin. address 15h < current value for r2 led current step > bit name initial function 0 1 d7 - - - - d6 - - - - d5 idltr2led5 0 d4 idltr2led4 0 idltr2 led5 idltr2 led4 idltr2 led3 idltr2 led2 idltr2 led1 idltr2 led0 current value d3 idltr2led3 0 0 0 0 0 0 0 0ma d2 idltr2led2 0 0 0 0 0 0 1 0.5ma d1 idltr2led1 0 0 0 0 0 1 0 1ma d0 idltr2led0 0 ? ? ? ? ? ? 0.5ma step ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 1 1 1 0 1 30.5ma 1 1 1 1 1 0 31ma 1 1 1 1 1 1 31.5ma when 120k ? is connected to iset pin.
technical note 23/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw address 16h bit name initial function 0 1 d7 - - - - d6 - - - - d5 i1g2led5 0 d4 i1g2led4 0 i1g2led 5 i1g2led 4 i1g2led 3 i1g2led 2 i1g2led 1 i1g2led 0 current value d3 i1g2led3 0 0 0 0 0 0 0 0ma d2 i1g2led2 0 0 0 0 0 0 1 0.5ma d1 i1g2led1 0 0 0 0 0 1 0 1ma d0 i1g2led0 0 ? ? ? ? ? ? 0.5ma step ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 1 1 1 0 1 30.5ma 1 1 1 1 1 0 31ma 1 1 1 1 1 1 31.5ma when 120k ? is connected to iset pin. address 17h < current value for g2 led current step > bit name initial function 0 1 d7 - - - - d6 - - - - d5 idltg2led5 0 d4 idltg2led4 0 idltg2 led5 idltg2 led4 idltg2 led3 idltg2 led2 idltg2 led1 idltg2 led0 current value d3 idltg2led3 0 0 0 0 0 0 0 0ma d2 idltg2led2 0 0 0 0 0 0 1 0.5ma d1 idltg2led1 0 0 0 0 0 1 0 1ma d0 idltg2led0 0 ? ? ? ? ? ? 0.5ma step ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 1 1 1 0 1 30.5ma 1 1 1 1 1 0 31ma 1 1 1 1 1 1 31.5ma when 120k ? is connected to iset pin.
technical note 24/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw address 18h bit name initial function 0 1 d7 - - - - d6 - - - - d5 i1b2led5 0 d4 i1b2led4 0 i1b2led5 i1b2led4 i1b2led3 i1b2led2 i1b2led1 i1b2led0 current value d3 i1b2led3 0 0 0 0 0 0 0 0ma d2 i1b2led2 0 0 0 0 0 0 1 0.5ma d1 i1b2led1 0 0 0 0 0 1 0 1ma d0 i1b2led0 0 ? ? ? ? ? ? 0.5ma step ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 1 1 1 0 1 30.5ma 1 1 1 1 1 0 31ma 1 1 1 1 1 1 31.5ma when 120k ? is connected to iset pin. address 19h < current value for b2 led current step > bit name initial function 0 1 d7 - - - - d6 - - - - d5 idltb2led5 0 d4 idltb2led4 0 idltb2 led5 idltb2 led4 idltb2 led3 idltb2 led2 idltb2 led1 idltb2 led0 current value d3 idltb2led3 0 0 0 0 0 0 0 0ma d2 idltb2led2 0 0 0 0 0 0 1 0.5ma d1 idltb2led1 0 0 0 0 0 1 0 1ma d0 idltb2led0 0 ? ? ? ? ? ? 0.5ma step ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 1 1 1 0 1 30.5ma 1 1 1 1 1 0 31ma 1 1 1 1 1 1 31.5ma when 120k ? is connected to iset pin. address 1ah bit name initial function 0 1 d7 - - - - d6 - - - - d5 - - - - d4 - - - - d3 - - - - d2 - - - - d1 rgb2mel 0 d0 rgb1mel 0 rgb*mel rgb*cnt (external pin) rgb* led lighting 0 l on 0 h on 1 l off 1 h on but, a state of lighting depends on the setup of other registers.
technical note 25/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw rgb led operating 1. operating mode rgb led can set up the following operating mode by the setup of the register. setup register i1**led : (register) initial electric current value [ma] idlt**led : (register) the electric current value of around 1step [ma] rgb*slnum : (register) slope step number (1,2,4,8,16,32,64 step) rgb*sl1step : (register) the first half slope 1step time [ms] rgb*sl2step : (register) the latter half slope 1step time [ms] rgb*wt1tm : (register) the first half lighting time [ms] rgb*wt2tm : (register) the latter half lighting time [ms] as for the following setup, calculate it from the above setup. i2**led : at the time of middle lighting current value [ma] = i1**led + idlt**led x rgb*slnum (in case of the value that a calculation exceeds maximum value, the current value is at the limit with maximum.) rgb*sl1tm : the first half slope time [ms] = rgb*sl1step x rgb*slnum rgb*sl2tm : the latter half slope time [ms] = rgb*sl2step x rgb*slnum each setup is necessary for dc current (at normal mode or blink mode). (* : 1/ 2 channels is shown. ** : r1/g1/b1/r2 /g2/b2 is shown.) note) the current value in the table, it is value when 120k ? is connected to iset pin. 0ma 31.5ma rgb*sta=1 rgb*sta=0 i1**led 0ma 31.5ma rgb*sta=1 rgb*sta=0 i2**led time time i2**led is a calculation. normal mode 2 normal mode 1
technical note 26/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw idlt**led idlt**led 0ma 31.5ma rgb*sta=1 rgb*sta=0 i1**led i2**led rgb*wt1tm rgb*wt2tm 0ma 31.5ma rgb*sta=1 rgb*sta=0 i2**led i1**led rgb*wt1tm rgb*wt2tm 0ma 31.5ma rgb*sta=1 rgb*sta=0 i1**led i2**led rgb*wt1tm rgb*sl2tm rgb*sl1tm rgb*wt2tm i2**led,rgb*sl1tm,rgb*sl2tm is a calculation. i2**led is a calculation. 0ma 31.5ma rgb*sta=1 rgb*sta=0 i1**led i2**led rgb*wt1tm rgb*sl2tm rgb*sl1tm rgb*wt2tm i2**led,rgb*sl1tm,rgb*sl2tm is a calculation. time time time time rgb*sl2step rgb*sl1step idlt**led idlt**led rgb*sl2step rgb*sl1step rgb*slnum step rgb*slnum step rgb*slnum step rgb*slnum step rgb*wt1tm/rgb*wt2tm is repeated. rgb*wt1tm/rgb*wt2tm is repeated. until it becomes rgb*sta=0, slope control is repeated. until it becomes rgb*sta=0, slope control is repeated. blink mode 1 blink mode 2 slope mode 2 slope mode 1
technical note 27/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw 2. slope control the slope control that this lsi is equipped processes step time inside as follows. it is made to have electric current by the log curve that is a simple target as to the slope. (a)section : it transits at the step time of two times when it was set up with rgb*sl1step (b)section : it transits at the step time when it was set up with rgb*sl1step. (c)section : it transits at the step time of a half times when it was set up with rgb*sl1step. the time of the total (rgb*sl1tm) is calculated with rgb*sl1step x rgb*slnum. a similar movement is done on the descent (rgb*sl2tm) side as well. the acceptance of the setup of a register concerned with led working during the slope movement stops. but, a rgb*sta signal interrupts even during the slope movement, and it is possible that led is turned off. external pin control rgb*mel (register) rgb*mel=1 and rgb*cnt=h, lighting. when rgb*mel =0, lighting when rgb*mel=0, lighting rgb*wt1tm i1**led i2**led rgb*sta=1 rgb*sta=0 0ma rgb*wt2tm rgb*cnt (external pin) 31.5ma time rgb*sta t1 t2 t4 t3 t6 t5 t7 t8 ( a ) ( b ) ( b ) ( c ) led current i1**led idlt**led
technical note 28/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw explanation for operate 1. reset there are two kinds of reset, software reset and hardware reset. (1) software reset ? all the registers are initialized more than making a register (sftrst) setup "1". ? the register of software resetting is an automatic return (auto return 0). (2) hardware reset ? it shifts to hardware reset by changing reset pin ?h? ?l?. ? the condition of all the registers under hardware reset pin is returned to the initial value, and it stops accepting all address. ? it?s possible to release from a state of hardware reset by setting register ?l? ?h?. ? reset pin has delay circuit. it doesn?t recognize as hardware reset in ?l? period under 5 s. (3) reset sequence ? when hardware reset was done during software reset, software reset is canceled when hardware reset is canceled. (because the initial value of software reset is ?0?) 2. thermal shutdown the blocks which thermal shutdown func tion is effective in the following. charge pump led driver reg1 reg2 is not shut down by thermal shutdown function, because reg2 can be used for i/o voltage. a thermal shutdown function works in about 195 . detection temperature has a hysteresis, and detection release temperature is about 175 . (design reference value)
technical note 29/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw 3. dc/dc start up dc/dc circuit operates when either led turns on. (but, when led connection is set to dc/dc output (vout) only.) dc/dc circuit has soft start function to prevent a rush current. vbat and vio sequence is as follow. en (*) vio vout reset v bat t vbaton t vbatoff t vioon=min 0.1ms t rstb=min 0.1ms t soft led current t rst=min 0ms t viooff=min 1ms (*) an en signal means the following in the upper figure. en = ?mleden? or ?sleden? or ?rgb1sta? or ?rgb2sta? (= led the led lighting control of a setup of connection vout) but, as for vbat < 2.2v (typ) or ta > t tsd (typ : 195 c), a protection function function s, and an en signal doesn't become effective. mode transition the transition of boosts multiple transits automatically by the vbat voltage and the voltage of the led electric current inflow pin. over voltage protection / over current protection dc/dc circuit output (vout) is equipped with the over-volt age protection and the over current protection function. a vout over-voltage detection voltage is about 6.0v. ( vout at the time of rise in a voltage ) a detection voltage has a hysteresis, and a detection releas e voltage is about 5.75v. (design reference value) and, when vout output short-circuits in gnd, drain electric current is controll ed by an over current protection function. standby soft all off mleden=?1? or sleden=?1? or rgb*sta=?1? and vbat>2.2v(typ) and ta< t tsd cp x1.0 mode vout>1.5v(typ) after it is detected, 128us(typ) wait x1.0 cp x1.0 mode mode up=?h? mode down=?h? x1.5 cp x1.5mode mode up=?h? mode down=?h? x2.0 cp x 2.0mode 1 condition: 1 but, led connection= it is limited to the led lighting control of a setup of vout.
technical note 30/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw 4. led driver led current value setting led maximum current value (white led driver and rgb led driver common) can be established in the resistance value riset that it is connected to the iset pin. a setting is shown in the following. iledmax = 6.4 x 0.6 [v] / riset [k ? ] [a] (typ) mled1to4, sled1to2 iledmax = 6.3 x 0.6 [v] / riset [k ? ] [a] (typ) all rgb led the maximum setting of led current is 32ma (mled and sled), 31.5ma (rgb) on the d range of the internal circuit. led current overload protection iset pin is mount with the gnd short detection function . led current value prevents excessive led current from flowing when iset pin becomes low impedance because it is shown with a formula of the former extension. white led driver the number of lighting of white led can be set up by the register mledsel and sledsel (address02h). the settlement of the number of lighting can be setup with follow. main lcd back light ??? 3 light (mled1 ~ 3) or 4 light (mled1 ~ 4) sub lcd back light ??? 1 light (sled1) or 2 light (sled1 ~ 2) connect the led pin that isn't used to the ground. rgb led driver by register b*ledmd and g*ledmd (address05h), a plac e of connection of green led and blue led it can be set up in vbat or vout. when vf is low, it is connected to vbat, and it is possible that efficiency is raised. when a vbat connection is chosen, a feedback route to t he dc/dc circuit is interrupted, and it works as a simple constant current driver. a write protect is given in the following address when "1" is written in the rgb*sta register. register a protected address rgb1sta 06h ~ 0fh rgb2sta 10h ~ 19h vbat connection a start in the setup sequence when the connection of led is vbat, only a led driver turns it on, and a dc/dc circuit is turned off. the led pin which isn't used is to short to the ground. but, the setup of a register concerned with led that isn?t used is prohibited. rgb*sta vout t on led current (max:6ms)
technical note 31/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw 5. i/o cpu interface control input is possible low voltage interface. interface peripheral block diagram is as follows. vio voltage or interface voltage is possible the setting range of 1.65~3.3v. (but, vbat voltage vio voltage) also, i/o of with enable is being used for scl, sda input as a prevention of clock propagation to the inside when other lsi shared the scl, sda line. level shift logic reset=l, output "h" en scl (sda) reset an equivalent circuit around the part i/o becomes p.8. by rising turn of the i/o power supply and the input level be careful enough because an electric current route may occur through the protection diode of the pin.
technical note 32/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw 6. about the start of reg2 (the voltage for i/o) it must start as follows when reg2 output is used as vio voltage. it must start as follows when external power supply is used as vio voltage. 7. about the pin management of the function that isn't used and test pins please connect the pin that isn?t used and test pin referred to equivalent circuit (p.8). testi1, testi2 ? ? ? ? ? ? short to gnd (must) because input pin for test testo1, testo2 ? ? ? ? ? ? be open because output for test t1~t4 ? ? ? ? ? ? short to gnd (must) because input pin for test non-used led pin ? ? ? ? short to gnd but, the setup of a register concerned with led that isn?t used is prohibited. reg2en, reg2md, rgb1cnt, rgb2cnt ? ? ? ? ? ? pull-down resistance is built in. short to gnd reg2en (external pin control) vbat (force) reg2o output (=vio voltage) min 7.5ms (*2) (*1) this sequence is when reg2o is used as an i/o voltage. take the specifications of the outside power supply into consideration when the i/o voltage is applied from outside. (*2) when the low consumption mode is unnecessary, reg2en=reg2md (simultaneous control) is possible. but, at that case as well, reg2 rising time in the normal mode take a (min : 2ms) into consideration. (*3) reg2 should go for a release of reset at the time of the normal mode. (*4) reg2en= though "l" and reset= "l" don't care even about the simultaneous timing, it is prohibition to take reg2en= "l" in front of reset= "l". reg2md (external pin control) stand by low current consumption mode normal mode register access is possible (*3) min 2ms(*2) reset (external pin control) stand by min 0ms (*4) vbat force vio force reset external pin control register control impossible possible impossible vio should go for a release of reset after the time of the rising mode. a nd it is forbid to fall vio before r eset=?l?.
technical note 33/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw 10. BD6081GU pcb pattern of the power dissipation measuring board 1 st layer(component) 2 nd layer 3 rd laye r 4 th layer 5 th layer 6 th layer 7 th layer 8 th layer(solder)
technical note 34/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw notes for use (1) absolute maximum ratings an excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down devices, thus making impossible to identify break ing mode such as a short circuit or an open circuit. if any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physical safety measures including the use of fuses, etc. (2) power supply and ground line design pcb pattern to provide low impedance for the wiring between the power supply and the ground lines. pay attention to the interference by common impedance of layout pattern when there are plural power supplies and ground lines. especially, when there are ground pattern for small signal and ground pattern for large current included the external circuits, please separate each ground pattern. furthermore, for all power supply pins to ics, mount a capacitor between the power supply and the ground pin. at the same time, in order to use a capacitor, thoroughly check to be sure the characteristics of the capacitor to be used present no problem including the occurrence of capacity dropout at a low temperature, thus determining the constant. (3) ground voltage make setting of the potential of the ground pin so that it will be maintained at the minimum in any operating state. furthermore, check to be sure no pins are at a potential lower than the ground voltage including an actual electric transient. (4) short circuit between pins and erroneous mounting in order to mount ics on a set pcb, pay thorough attention to the direction and offset of the ics. erroneous mounting can break down the ics. furthermore, if a short circuit occurs due to foreign matters entering between pins or between the pin and the power supply or the ground pin, the ics can break down. (5) operation in strong electromagnetic field be noted that using ics in the strong electromagnetic field can malfunction them. (6) input pins in terms of the construction of ic, parasitic elements are inevitably formed in relation to potential. the operation of the parasitic element can cause interference with circuit operation, thus resulting in a malfunction and then breakdown of the input pin. therefore, pay thorough attention not to handle the input pins, such as to apply to the input pins a voltage lower than the ground respectively, so that any parasitic element will operate. furthermore, do not apply a voltage to the input pins when no power supply voltage is applied to the ic. in addition, even if the power supply voltage is applied, apply to the input pins a voltage lower than the power supply voltage or within the guaranteed value of electrical characteristics. (7) external capacitor in order to use a ceramic capacitor as the external capacitor, determine the constant with consideration given to a degradation in the nominal capacitance due to dc bias and changes in the capacitance due to temperature, etc. (8) thermal shutdown circuit (tsd) this lsi builds in a thermal shutdown (tsd) circuit. when ju nction temperatures become detec tion temperature or higher, the thermal shutdown circuit operates and turns a switch off. the thermal shutdown circuit, which is aimed at isolating the lsi from thermal runaway as much as possible, is not ai med at the protection or guarantee of the lsi. therefore, do not continuously use the lsi with this circuit operating or use the lsi assuming its operation. (9) thermal design perform thermal design in which there are adequate margins by taking into account the permissible dissipation (pd) in actual states of use. (10) ldo use each output of ldo by the independence. don?t use under t he condition that each output is short-circuited because it has the possibility that an operation becomes unstable. (11) about the pin for the test, the un-use pin prevent a problem from being in the pin for the test and the un-use pin under the state of actual use. please refer to a function manual and an application notebook. and, as for the pin that doesn't specially have an explanation, ask our company person in charge. (12) about the function description or application note or more. the function manual and the application notebook are the design materials to design a set. so, the contents of the materials aren't always guaranteed. please design application by having fully examination and evaluation include the external elements.
technical note 35/35 www.rohm.com 2011.04 - rev. a ? 2011 rohm co., ltd. all rights reserved. BD6081GU,bd6081gvw ordering part number b d 6 0 8 1 g u - e 2 part no. part no. 6081 package gu : vcsp85h3 gvw : sbga063w060 packaging and forming specification e2: embossed tape and reel (unit : mm) vcsp85h3 (BD6081GU) 3.90 0.1 0.45 0.1 0.25 0.1 0.45 0.1 3.90 0.1 p=0.5 6 p=0.5 6 48- 0.30 0.05 s 0.08 s a b ba 0.05 e d c b a 1234 g f 56 7 1pin mark (0.15)index post 1.0max ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape tape quantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 2500pcs e2 () direction of feed reel 1pin (unit : mm) sbga063w060 f 8 3 c 0.9max d g 0.65 a e 0.65 762 h 51 0.08 4 b 6.0 0.1 6.0 0.1 0.725 0.1 0.725 0.1 p=0.65 7 p=0.65 7 s m abs 0.08 63- 0.33 0.05 0.1 s a b 1pin mark ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape (with dry pack) tape quantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 2000pcs e2 () direction of feed reel 1pin
r1120 a www.rohm.com ? 2011 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specified herein is subject to change for improvement without notice. the content specified herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specifications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specified in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specified herein is intended only to show the typical functions of and examples of application circuits for the produc ts. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specified in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any product, such as derating, redundancy, fire control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specified herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law.
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