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TB67S269FTG 1 2014- 10- 8 toshiba bicd integrated circuit silicon monolithic tb67s 269ftg clock - in controlled bipolar stepping motor driver the tb67s 269 is a two - phase bipolar stepping motor driver using a pwm chopper. the clock in decoder is built in. fabricated with the bi cd process, rat ing is 5 0 v/ 2 .0 a . features ? bicd process integrated monolithic ic. ? capable of controlling 1 b ipolar stepping motor . ? pwm controlled constant - current drive . ? allows full , half , quarter , 1/8, 1/16, 1/32 step operation . ? low on - resistance (high + low side=0. 8 (typ . )) mosfet output stage. ? high efficiency motor current control mechanism (advanced dynamic mixed decay) ? high v oltage and current (for specification, please refer to absolute maximum ratings and operation ranges) ? error detection (tsd/isd) signal output function ? built -in error detection circuits ( thermal shutdown (tsd) over - current shutdown (isd), and power - on reset (por) ) ? built - in v cc regulator for internal circuit use. ? chopping frequency of a motor can be customize d by external resistance and condenser. ? multi packag e lineup tb67s 269 ftg: p- wqfn48 - 0707- 0.50 - 003 note) please be careful a bout thermal conditions during use . p - wqfn48 - 0707 - 0.50 - 003 ftg weight 0.10g ( typ .) ?2014 toshiba corporation
TB67S269FTG 2 2014- 10- 8 pin assignment (tb67s 269 ) please mount the four corner pins of the qfn package and the exposed pad to the gnd area of the pcb. (top view) 1 2 3 4 5 6 7 8 9 10 11 12 36 35 3 4 33 32 31 30 29 28 27 26 13 14 15 16 17 18 19 20 21 22 23 24 25 48 47 46 45 44 43 42 41 40 39 38 37 f t g nc clk enable reset gnd nc rsa rsa nc outa+ outa+ nc nc nc g nd ou ta - ou ta - gnd gnd outb - outb - gnd nc nc nc outb+ outb+ nc rsb rsb nc vm nc vcc nc nc nc lo dmode0 gnd vrefb vrefa oscm cw/ccw mo dmode1 dmode2 nc
TB67S269FTG 3 2014- 10- 8 tb67s 269 block diagram functional blocks/circuits/constants in the block chart etc. may be omitted or simplified for explanatory purposes. dmode0 dmode1 dmode2 enable reset clk cw/ccw standby c ontrol + step r esolution s elector vrefa vrefb motor oscillator oscm vcc regulator vcc tsd isd rsb motor control logic predriver rsa vm signal decode logic current reference setting current comp current comp predriver current level set power - on reset lo error output angle monitor mo osc - clock converter system oscillator gnd outb+ outb - outa+ outa -
TB67S269FTG 4 2014- 10- 8 application notes all the grounding wires of the tb6 7s 269 must run on the solder mask on the pcb and be externally terminated at only one point. also, a grounding method should be considered for efficient heat dissipation. careful attention should be paid to the layout of the output, vdd (vm ) and gnd traces, to avoid short circui ts across output pins or to the power supply or ground. if such a short circuit occurs, the device may be permanently damaged. also, the utmost care should be taken for pattern designing and implementation of the device since it has power supply pins ( vm , rs , out, gnd) through which a particularly large current may run. if these pins are wired incorrectly, an operation error may occur or the device may be destroyed. the logic input pins must also be wired correctly. otherwise, the device may be damaged owin g to a current running through the ic that is larger than the specified current.
TB67S269FTG 5 2014- 10- 8 pin explanations tb67s 269 ftg (qfn48) pin no.1 C 28 pin no. pin name function 1 nc non - connection pin 2 clk clk signal input pin 3 enable ach/bch o utput stage on/off control pin 4 reset electric angle reset pin 5 gnd ground pin 6 nc non - connection pin 7 rsa (*) motor ach current sense pin 8 rsa (*) motor ach current sense pin 9 nc non - connection pin 10 outa+ (*) m otor ach (+) output pin 11 outa+ (*) motor ach (+) output pin 12 nc non - connection pin 13 nc non - connection pin 14 nc non - connection pin 15 gnd ground pin 16 outa - (*) motor ach ( - ) output pin 17 outa - (*) motor ach ( - ) output pin 18 gnd ground pin 19 gnd ground pin 20 outb - (*) motor bch ( - ) output pin 21 outb - (*) motor bch ( - ) output pin 22 gnd ground pin 23 nc non - connection pin 24 nc non - connection pin 25 nc non - connection pin 26 outb+ (*) motor bch (+) output pin 27 outb+ (*) motor bc h (+) output pin 28 nc non - connection pin
TB67S269FTG 6 2014- 10- 8 pin no.29 C 4 8 pin no. pin name function 29 rsb (*) motor bch current sense pin 30 rsb (*) motor bch current sense pin 31 nc non - connection pin 32 vm motor power supply pin 33 nc non - connection p in 34 vcc internal vcc regulator monitor pin 35 nc non - connection pin 36 nc non - connection pin 37 nc non - connection pin 38 lo error detect signal output pin 39 dmode0 step resolution set pin n o.0 40 gnd ground pin 41 vrefb motor bch output set pin 42 vrefa motor ach output set pin 43 oscm oscillating circuit frequency for chopping set pin 44 cw/ccw motor rotation direction set pin 45 mo electric angle monitor pin 46 dmode1 step resolution set pin n o.1 47 dmode2 step resolution set pin n o.2 48 nc non - connection pin ? please do not run patterns under nc pins. * : please connect the pins with the same pin name, while using the tb6 7s 269 .
TB67S269FTG 7 2014- 10- 8 input/output equivalent circuit (tb67s 269) pin name in/out signal equivalent circuit dmode0 dmode1 dmode2 cl k enable reset cw/ccw digital input (vih/vil) vih: 2.0v(min) to 5.5v(max) vil : 0v(min) to 0.8 v(max) lo mo digital output (voh/vol) (pullup resistance :10k to 100k ) vcc vrefa vrefb vcc voltage range 4.75v(min) to 5.0v(typ . ) to 5.25v(max) vref voltage range 0v to 3.6v oscm oscm frequency setting range 0.64mhz(min) to 1.12mhz(typ . ) to 2.4mhz(max) out a+ out a - out b+ out b - rsa rsb vm power supply voltage range 10v(min ) to 47v(max) output pin voltage 10v(min) to 47v (max) the equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purpose s. 100k 1 k gnd logic input pin logic o utput p in gnd 1 k vcc gnd vref 50 0 1 k oscm gnd gnd rs out+ out -
TB67S269FTG 8 2014- 10- 8 function explanation (stepping motor) clk function each up - edge of the clk signal will shift the motor s electrical angle per step. clk input function up - edge shifts t he electrical angle per step. down - edge (state of the electrical angle does not change.) enable function the enable pin controls the on and off of the corresponding output stage. this pin serves to select if the motor is stopped in off (h igh impedance) mode or activated. p lease set the enable pin to l during vm power - on and power - off sequence. enable i nput function h output stage= on ( n ormal operation mode) l output stage= off) ( h igh impedance mode ) cw/ccw function and the output pin function (output logic at the time of a charge start) the cw/ccw pin controls the rotation d irection of the motor. when set to clockwise , the current of outa is output first, with a phase difference of 90 . when set to counter clockwise , the current of outb is output first with a phase difference of 90 . cw/ccw i nput out (+) out ( - ) h : clo ckwise operation(cw) h l l : counter clockwise operation(ccw) l h step resolution select function dmode0 dmode1 dmode2 function l l l standby mode (the oscm is disabled and the output stage is set to off status) l l h full step resolution l h l ha lf step resolution(type (a)) l h h quarter step resolution h l l half step resolution(type (b)) h l h 1/8 step resolution h h l 1/16 step resolution h h h 1/32 step resolution when switching the dmode0,1,2; setting the reset signal to low (will set the electrical angle to the initial status), is recommended.
TB67S269FTG 9 2014- 10- 8 step resolution setting and initial angle [full step resolution] [half step resolution (type a)] mo output shown in the timing chart is when the mo pin is pulled up . timing charts may be simplified for explanatory purpose. h l h l +100% - 100% 0% +100% - 100% 0% mo iout(b) iout(a) clk h l h l +100% - 100% 0% +100% - 100% 0% mo iout(b) iout(a) clk cw ccw cw ccw
TB67S269FTG 10 2014 - 10- 8 [half step resolution (type b)] [quarter step resolution ] mo output shown in the timing chart is when the mo pin is pulled up . timing charts may be simplified for explanatory purpose. h l h l +100% - 100% 0% +100% - 100% 0% mo iout(b) iout(a) clk +71% - 71% +71% - 71% h l h l +100% - 100% 0% +100% - 100% 0% mo iout(b) iout(a) cl k +71% - 71% +71% - 71% +38% - 38% +38% - 38% cw ccw cw ccw
TB67S269FTG 11 2014 - 10- 8 [ 1/8 step resolution ] mo output sho wn in the timing chart is when the mo pin is pulled up. timing charts may be simplified for explanatory purpose. cw ccw h l h l mo clk +100% - 100% 0% iout(b) +100% - 100% 0% iout(a) +96% +83% +56% +38% +71% +20% +96% +83% +56% +38% +71% +20% - 96% - 83% - 56% - 38% - 71% - 20% - 96% - 83% - 56% - 38% - 71% - 20% - 98% +98% - 98% +98%
TB67S269FTG 12 2014 - 10- 8 [ 1/16 step resolution ] mo output shown in the timing chart is when the mo pin is pulled up. timing charts may be simplified for explanatory purpose. h l h l mo clk iout(b) +100% - 100% 0% iout(a) +96% +83% +56% +38% +71% +20% - 96% - 83% - 56% - 38% - 71% - 20% - 98% +98% - 100% 0% +96% +83% +56% +38% +71% +20% - 96% - 83% - 56% - 38% - 71% - 20% - 98% +98% +100% cw ccw
TB67S269FTG 13 2014 - 10- 8 [ 1/32 step resolution ] mo output shown in the timing chart is when the mo pin is pulled up. timing charts may be simplified for explanatory purpose. h l mo clk iout(b) +100% - 100% 0% iout(a) +100% - 100% 0% h l cw ccw
TB67S269FTG 14 2014 - 10- 8 step setting and current percentage current [%] full half (a) half (b) quarter 1/8 1/16 1/32 100% 99% 98% 97% 96% 94% 92% 90% 88% 86% 83% 80% 77% 74% 71% 67% 63% 60% 56% 52% 47% 43% 38% 34% 29% 25% 20% 15% 10% 5% 0% reset function reset input function h sets the electrical angle to the initi al condition . l normal operation mode the current for each channel ( while reset is applied) is shown in the table below. mo will show l at this time. step resolution setting a ch current setting b ch current setting default electrical angle full step 100% 100% 45 half step ( type (a) ) 100% 100% 45 quarter step 71% 71% 45 half step (type (b)) 71% 71% 45 1/8 step 71% 71% 45 1/16 step 71% 71% 45 1/32 step 71% 71% 45
TB67S269FTG 15 2014 - 10- 8 lo(error detect signal) output function when thermal shutdown(tsd) or over - current shutdown(isd) is applied, the lo voltage will be switched to lo w(gnd) level. the lo is an open - drain output pin. lo pin needs to be pulled up to 3.3v/5.0v level for proper function . during regular operation, t he lo pin level will stay high(vcc level). when error detection (tsd, isd) is applied, the lo pin will show low (gnd) level. vcc 10k
TB67S269FTG 16 2014 - 10- 8 decay function admd( advanced dynamic mixed decay ) c onstant current control the advanced dyn amic mixed decay threshold, which determines the current ripple level during current feedback control, is a unique value. auto decay mode current waveform timing charts may be simplified for explanatory purpose. nf detect fchop internal osc admdth ( advanced dynamic mixed decay threshold ) fchop 1 cycle 16clk c harge m od e nf detect fast decay admdth detect slow decay fchop 1 cycle char ge mode iout s etting current value detect nf detect nf detect s etting current value internal osc iout fcho p fchop advanced dynamic mixed decay threshold admdth fast decay slow decay
TB67S269FTG 17 2014 - 10- 8 admd current waveform ? when the next current step is higher : ? when charge period is more than 1 fchop cycle : when the charge p eriod is longer than fchop cycle, the charge period will be extended until the motor current reaches the nf threshold. once the current reaches the n ext current step , then the sequence will go on to decay mode. s etting current value slow slow slow slow f ast f ast charge charg e f ast charge fast charge s etting current value nf nf nf nf internal osc fchop fchop fchop fchop s etting current value sl ow slow slow f ast f ast charge charge fast charge s etting current value nf nf nf internal osc fchop fchop fchop fchop
TB67S269FTG 18 2014 - 10- 8 ? when the next current step is l ower : ? when the fast continues past 1 fchop cycle (the motor current not reaching the admd threshold during 1 fchop cycle) s etting current value f ast nf nf nf the operation mode will be switched to charge to monitor the motor current with the rs comparator; then will be switched to fast because the motor current is above the threshold. f chop f chop f chop f chop s etting curre nt value internal osc slow f ast charge slow f ast charge f ast slow slow charge charge s etting current value f ast nf nf the operation mode will be switched to charge to monit or the motor current with the rs comparator; then will be switched to fast because the motor current is above the threshold. f chop f chop f chop f chop s etting current value internal osc slow f ast charge f ast charge slow slow charge if the motor current is still above the admd threshold after reaching 1 fchop cycle, the out put stage function will stay fast until the current reaches the admdth.
TB67S269FTG 19 2014 - 10- 8 output transistor function mode output transistor function mode u1 u2 l1 l2 charge on off off on slow off off on on fast off on on off note: this table shows an example of when the current flows as indicated by the arrows in the figures shown above. if the current flows in the opposite direction, refer to the following table. mode u1 u2 l1 l2 charge off on on off slow off off on on fast on off off on this ic controls the motor current to be constant by 3 modes listed above. the equivalent circuit diagrams may be si mplified or some parts of them may be omitted for explanatory purposes. u1 l1 u2 l2 pgnd off off u1 l1 u2 l2 off on on load pgnd u1 l1 u2 l 2 load pgnd rspin rrs vm on on load charge mode a current flows into the motor coil. slow mode a current circulates around the motor coil and this device. fast mode the energy of the motor coil is fed back to the power on rs pin rrs vm rs pin rrs vm off off on off
TB67S269FTG 20 2014 - 10- 8 calculation of the predefined output current for pw m constant - current control, this ic uses a clock generated by the oscm oscillator. the peak output current ( setting c urrent value ) can be set via the current - sensing resistor (r s) and the reference voltage (vref), as follows: iout(max) = vref(gain) vref(gain) : the vref decay rate is 1/ 5.0 (typ.) for example : in the case of a 100% setup when vref = 3 .0 v, torque=100%,rs=0.51 , the motor constant current ( setting current value ) will be calculated as: i out = 3.0 v / 5.0 / 0.51 = 1.18 a calculation of the oscm oscillation frequency (chopper reference frequency) an approximation of the oscm oscillation frequency (foscm) and chopper frequency (fchop) can be calculated by the following expressions. foscm=1/[0. 56 x{cx(r1+500)}] c,r1: external co mponents for oscm (c=270pf , r 1 = 5.1 k ? => about foscm= 1.12mhz (typ.) ) fchop = foscm / 16 f oscm= 1.12mhz => fchop = abo ut 70khz if chopping frequency is raised, rippl of current will become small and wave - like reproducibility will improve. however, the gate loss inside ic goes up and generation of heat becomes large. by lowering chopping frequency, reduction in genera tion of heat is expectable. however, rippl of current may become large. it is a standard about about 70 khz. a setup in the range of 50 to 100 khz is recommended. vref(v) r r s ( )
TB67S269FTG 21 2014 - 10- 8 absolute maximum ratings (ta = 25 c ) n ote 1: usually, the maximum current value at the time should use 70% or less of the a bsolute m aximum r atings for a standard on thermal rating . the maximum output current may be further limited in view of thermal considerations, depending on ambient tempera ture and board conditions. note 2: device alone (ta =25c) when ta exceeds 25c, it is necessary to do the derating with 10.4mw/c. ta: ambient temperature topr : ambient temperature while the ic is active tj: junction temperature while the ic is active. t he maximum junction temperature is limited by the thermal shutdown (tsd) circuitry. it is advisable to keep the maximum current below a certain level so that the maximum junction temperature, tj (max), will not exceed 120c. caution absolute maximum ratings the absolute maximum ratings of a semiconductor device are a set of ratings that must not be exceeded, even for a moment. do not exceed any of these ratings. exceeding the rating (s) may cause device breakdown, damage or deterioration, and may res ult in injury by explosion or combustion. the value of even one parameter of the absolute maximum ratings should not be exceeded under any circumstances. the tb67s 269 ftg does not have overvoltage detection circuit . therefore, the device is damaged if a vol tage exceeding its rated maximum is applied. all voltage ratings, including supply voltages, must always be followed. the other notes and considerations described later should also be referred to. (for reference) pd - ta graph characteristics symbol rating unit remarks motor power supply vm 50 v - motor output voltage v out 50 v - motor output current i out 2 .0 a (note 1) internal logic power supply vcc 6 .0 v when externally applied. logic input voltage vin(h) 6 .0 v - vin(l) - 0.4 v - mo output voltage vmo 6 .0 v - lo outp ut voltage vlo 6 .0 v - mo inflow current imo 30 ma - lo inflow current ilo 30 ma - power dissipation wqfn48 pd 1.3 w (note 2) operating temperature t opr - 20 to 85 c - storage temperature t st g - 55 to 150 c - junction temperature tj(max) 150 c - pd - ta m ounted to board device alone board condition 4 layer glass epoxy board cu t hickness :1 layer and 4 layer:55mm , 2 layer and 3 layer:35mm board size:100mm 110mm 1.6mm
TB67S269FTG 22 2014 - 10- 8 operation ranges ( ta= - 2 0 to 85c ) characteristics symbol min typ. max unit remarks motor power supply vm 10 24 4 7 v - motor output current i out - 1. 4 2 .0 a (note 1) logic input voltage vin(h) 2.0 - 5.5 v logic input high level vin(l) 0 - 0.8 v logic input low level mo output pin voltage vmo - 3.3 5.0 v - lo output pin voltage vlo - 3.3 5.0 v - clock input frequency fclk - - 1 00 khz - chopper frequency fchop(range) 40 70 150 khz - vref input voltage vref gnd 2.0 3.6 v - note 1: maximum current for actual usage may be limited by the operating circumstances such as operating conditions ( exciting mode, operating time, and so on) , ambient temperature, and heat conditions ( board condition and so on). electrical specifications 1 (ta = 25 c, vm = 24 v , unless specified othe rwise ) characteristics symbol test condition min typ . max unit logic input voltage high vin(h) logic input (note) 2 .0 - 5. 5 v low v in(l) logic input (note) 0 - 0.8 v logic input hysteresis voltage v in(hys) logic input (note) 100 - 300 mv logic input current high iin(h) vin(h)=3.3 v - 33 - a low iin(l) vin(l)=0v - - 1 a mo output pin voltage low vol(mo) iol=24ma output=low - 0.2 0.5 v lo output pin voltage low vol(lo) iol=24ma output=low - 0.2 0.5 v power consumption im1 output pins=open standb y mode - 2 3 ma im2 output pins=open standby release enable=low - 3 5 ma im3 output pins=open full step resolution - 5 7 ma output leakage current high - side ioh vrs=vm=5 0v, vout =0v - - 1 a low - side iol vrs=vm=v out = 5 0v 1 - - a motor current channel differential i out 1 current differential between ch -5 0 5 % motor current setting accuracy i out 2 i out =1 .5 a -5 0 5 % rs pin current irs vrs = vm =24v 0 - 10 a motor output on - resistance (high - side+low - side) ron(h+l) tj=25 c, forward direction (high - side+low - side) 0 .8 0.9 note: vin (h) is defined as the vin voltage that causes the outputs (outa , outb ) to change when a pin under test is gradually raised from 0 v. v in (l) is defined as the v in voltage that causes the outputs (outa , outb ) to change when the pin is then gradually lowered from 5v . the difference between v in (h) and v in (l) is defined as th e v in (hys) . note: when the logic signal is applied to the device whilst the vm power supply is not asserted; the device is designed not to function , but for saf e usage, please apply the logic signal after the vm power supply is asserted and the vm voltage reaches the proper operating range.
TB67S269FTG 23 2014 - 10- 8 electrical specifications 2 (ta = 25c, v m = 24 v , unless specified otherwise ) characteristics symbol test condition min typ . max unit vref input current i ref vref = 2 .0v - 0 1 a vcc voltage vcc icc=5.0ma 4.75 5.0 5.25 v vcc current icc vcc=5.0v - 2.5 5 ma vref gain rate v ref (gain) v ref =2.0v 1/ 5.2 1/5.0 1/ 4.8 thermal shutdown(tsd) threshold (note1 ) t j tsd 145 1 60 175 c vm recovery voltage vmr 7.0 8.0 9.0 v over - current detection (isd) threshold ( note 2) isd 2.1 3.0 4.0 a note 1 : about tsd when the junction temperature of the device reached the tsd threshold, the tsd circuit is triggered; the internal reset circ uit then turns off the output transistors. noise rejection blanking time is built - in to avoid misdetection. once the tsd circuit is triggered, the device will be set to standby mode, and can be cleared by reasserting the vm power source, or setting the dmo de pins to standby mode. the tsd circuit is a backup function to detect a the r mal error, therefore is not recommended to be used aggressively . note 2 : about isd w hen the output current reaches the threshold, the isd circuit is triggered; the internal reset circuit then turns off the output transistors. once the isd circuit is triggered, the device keeps the output off until power - on reset (por), is reasserted or the device is set to standby mode by dmode pins . for fail - safe, please insert a fuse to avoid se condary trouble. back - emf while a motor is rotating, there is a timing at which power is fed back to the power supply. at that timing, the motor current recirculates back to the power supply due to the effect of the motor back - emf. if the power supply do es not have enough sink capability, the power supply and output pins of the device might rise above the rated voltages. the magnitude of the motor back - emf varies with usage conditions and motor characteristics. it must be fully verified that there is no r isk that the tb62214afg/aftg or other components will be damaged or fail due to the motor back - emf. cautions on overcurrent shutdown (isd) and thermal shutdown (tsd) the isd and tsd circuits are only intended to provide temporary protection against irregu lar conditions such as an output short - circuit; they do not necessarily guarantee the complete ic safety. if the device is used beyond the specified operating ranges, these circuits may not operate properly: then the device may be damaged due to an output short - circuit. the isd circuit is only intended to provide a temporary protection against an output short - circuit. if such a condition persists for a long time, the device may be damaged due to overstress. overcurrent conditions must be removed immediately by external hardware. ic mounting do not insert devices incorrectly or in the wrong orientation. otherwise, it may cause breakdown, damage and/or deterioration of the device.
TB67S269FTG 24 2014 - 10- 8 ac electrical specification (ta = 25 c, vm = 24 v, 6.8 mh/5.7 ) characteristics symbol test condition min typ . max unit inside filter of clk input minimum high width tclk(h) the clk(h) minimum pulse width 300 - - ns inside filter of clk input minimum low width tclk(l) the clk( l ) minimum pulse width 250 - - ns output transistor switching specific tr - 30 80 130 ns tf - 40 90 140 ns tplh (clk) clk - output - 1000 - ns tphl (clk) clk - output - 1500 - ns analog noise blanking time atblk vm=24v,iout =1.5 a analog t blank 250 4 00 550 ns oscillator frequency accuracy ? foscm cosc=270pf, rosc=5.1 k -15 - +15 % oscillator reference frequency foscm cosc = 270 pf, rosc = 5.1 k 952 1120 1288 khz chopping frequency fchop output:active ( iout = 1. 5 a), fosc = 1 12 0 khz - 7 0 - khz ac electrical specification timing chart timing charts may be simplified for explanatory purpose. tclk(h) t clk(l) tp lh(clk) tphl(clk) 10% 90% tr 90% 10% tf clk out 50% 50% 50% 50% 50% 1/fclk
TB67S269FTG 25 2014 - 10- 8 example application circuit s the values shown in the following figure are typical values. for input conditions, see the operating ranges. note: i will recommend the addition of a capacitor if necessary. the gnd wiring must become one point as much as possible - earth. the example of an applied circuit is for reference, and enou gh evaluation should be done before the mass - production design. moreover, it is not the one to permit the use of the industrial property. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 c lk enable reset gnd r sa r sa o uta+ o uta+ gnd o uta - o uta - gnd gnd o utb - o utb - gnd o utb+ o utb+ r sb r sb vm vcc gnd v ref b v ref a oscm cw/ccw m o dmode1 dmode2 5v 0 v 5v 0 v 5v 0 v m 0. 5 1 0. 5 1 0. 1 f 10 0 f 0.1 f 0. 1 f 5v 0 v 2 70p f 5.1 k 5v 0 v 5v 0 v 5v l o dmode0 5v 0 v
TB67S269FTG 26 2014 - 10- 8 package dimensions (unit :mm) p - wqfn48 - 0707 - 0.50 - 003 weight 0.10g ( typ .)
TB67S269FTG 27 2014 - 10- 8 notes on contents block diagrams some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for explanatory purposes. equivalent circuits the equivalent circuit diagrams may be simplified or some parts of th em may be omitted for explanatory purposes. timing charts timing charts may be simplified for explanatory purposes. application circuits the application circuits shown in this document are provided for reference purposes only. thorough evaluation is requir ed, especially at the mass - production design stage . toshiba does not grant any license to any industrial property rights by providing these examples of application circuits. test circuits components in the test circuits are used only to obtain and confirm the device characteristics. these components and circuits are not guaranteed to prevent malfunction or failure from occurring in the application equipment. ic usage considerations notes on handling of ics (1) the absolute maximum ratings of a semicondu ctor device are a set of ratings that must not be exceeded, even for a moment. do not exceed any of these ratings.exceeding the rating(s) may cause device breakdown, damage or deterioration, and may result in injury by explosion or combustion. (2) use a n appropriate power supply fuse to ensure that a large current does not continuously flow in the case of overcurrent and/or ic failure. the ic will fully break down when used under conditions that exceed its absolute maximum ratings, when the wiring is rou ted improperly or when an abnormal pulse noise occurs from the wiring or load, causing a large current to continuously flow and the breakdown can lead to smoke or ignition. to minimize the effects of the flow of a large current in the case of breakdown, ap propriate settings, such as fuse capacity, fusing time and insertion circuit location, are required. (3) if your design includes an inductive load such as a motor coil, incorporate a protection circuit into the design to prevent device malfunction or b reakdown caused by the current resulting from the inrush current at power on or the negative current resulting from the back electromotive force at power off. ic breakdown may cause injury, smoke or ignition. use a stable power supply with ics with built -i n protection functions. if the power supply is unstable, the protection function may not operate, causing ic breakdown. ic breakdown may cause injury, smoke or ignition. (4) do not insert devices in the wrong orientation or incorrectly. make sure that t he positive and negative terminals of power supplies are connected properly. otherwise, the current or power consumption may exceed the absolute maximum rating, and exceeding the rating(s) may cause device breakdown, damage or deterioration, and may result in injury by explosion or combustion. in addition, do not use any device inserted in the wrong orientation or incorrectly to which current is applied even just once . (5) carefully select external components (such as inputs and negative feedback capacitors) and load components (such as speakers), for example, power amp and regulator. if there is a large amount of leakage current such as from input or negative feedback condenser , the ic output dc voltage will increase. if this output voltage is connected to a speaker with low input withstand voltage, overcurrent or ic failure may cause smoke or ignition. (the overcurrent may cause smoke or ignition from the ic itself.) in particular, please pay attention when using a bridge tied load (btl) connection - type ic t hat inputs output dc voltage to a speaker directly.
TB67S269FTG 28 2014 - 10- 8 points to remember on handling of ic s overcurrent detection circuit overcurrent detection circuits (referred to as current limiter circuits) do not necessarily protect ics under all circumstances. if th e overcurrent detection circuits operate against the overcurrent, clear the overcurrent status immediately . depending on the method of use and usage conditions, exceeding absolute maximum ratings may cause the overcurrent detection circuit to operate impr operly or ic breakdown may occur before operation. in addition, depending on the method of use and usage conditions, if overcurrent continues to flow for a long time after operation, the ic may generate heat resulting in breakdown. thermal shutdown circui t thermal shutdown circuits do not necessarily protect ics under all circumstances. if the thermal shutdown circuits operate against the over - temperature, clear the heat generation status immediately . depending on the method of use and usage conditions, e xceeding absolute maximum ratings may cause the thermal shutdown circuit to operate improperly or ic breakdown to occur before operation. heat radiation design when using an ic with large current flow such as power amp, regulator or driver, design the dev ice so that heat is appropriately radiated, in order not to exceed the sp ecified junction temperature (t j ) at any time or under any condition. these ics generate heat even during normal use. an inadequate ic heat radiation design can lead to decrease in ic life, deterioration of ic characteristics or ic breakdown. in addition, when designing the device, take into consideration the effect of ic heat radiation with peripheral components. back - emf when a motor rotates in the reverse direction, stops or slows abruptly, current flows back to the motors power supply owing to the effect of back - emf. if the current sink capability of the power supply is small, the devices motor power supply and output pins might be exposed to conditions beyond the absolute maximu m ratings. to avoid this problem, take the effect of back - emf into consideration in system design.
TB67S269FTG 29 2014 - 10- 8 restrictions on product use ? toshiba corporation, and its subsidiaries and affiliates (collectively "toshiba"), reserve the right to make changes to the information in this document, and related hardware, software and systems (collectively "product") without notice. ? this document and any information herein may not be reproduced without prior written permission from toshiba. even with toshiba's written p ermission, reproduction is permissible only if reproduction is without alteration/omission. ? though toshiba works continually to improve product's quality and reliability, product can malfunction or fail. customers are responsible for complying with safet y standards and for providing adequate designs and safeguards for their hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of product could cause loss of human life, bodily injury or damage to property , including data loss or corruption. before customers use the product, create designs including the product, or incorporate the product into their own applications, customers must also refer to and comply with (a) the latest versions of all relevant toshib a information, including without limitation, this document, the specifications, the data sheets and application notes for product and the precautions and conditions set forth in the "toshiba semiconductor reliability handbook" and (b) the instruct ions for the application with which the product will be used with or for. customers are solely responsible for all aspects of their ow n product design or applications, including but not limited to (a) determining the appropriateness of the use of this product in su ch design or applications; (b) evaluating and determining the applicability of any information contained in this document, or in charts, d iagrams, programs, algorithms, sample application circuits, or any other referenced documents; and (c) validating all operating parameters for such designs and applications. toshiba assumes no liability for customers' product design or applications. ? product is neither intended nor warranted for use in equipments or systems that require extraordinarily high levels of qua lity and/or reliability, and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage and/or serious public impact ( " unintended use " ). except for specific applications as expressly stated in this document, u nintended use includes, without limitation, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment us ed to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance - related fields. if you use product for unintended use, toshiba assumes no liability for product. for details , please contact your toshiba sales representative. ? do not disassemble, analyze, reverse - engineer, alter, modify, translate or copy product, whether in whole or in part. ? product shall not be used for or incorporated into any products or systems whose m anufacture, use, or sale is prohibited under any applicable laws or regulations. ? the information contained herein is presented only as guidance for product use. no responsibility is assumed by toshiba for a ny infringement of patents or any other intellec tual property rights of third parties that may result from the use of product. no license to any intellectual property right is granted by this document, whether express or implied, by estoppel or otherwise. ? absent a written signed agreement, except as p rovided in the relevant terms and conditions of sale for product, and to the maximum extent allowable by law, toshiba (1) assumes no liability whatsoever, including without limitation, indirect, consequential, special, or incidental damages or loss, includ ing without limitation, loss of profits, loss of opportunities, business interruption and loss of data, and (2) disclaims any and all express or implied warranties and conditions related to sale, use of product, or information, including warranties or cond itions of merchantability, fitness for a particular purpose, accuracy of information, or noninfringement. ? do not use or otherwise make available product or related software or technology for any military purposes, including without limit ation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technol ogy products (mass destruction weapons). product and related software and technology may be controlled under the applicable export laws and regulations including, without limitation, the japanese foreign exchange and foreign trade law and the u.s. export administration regulations. export and re - export of product or related software or technology are strictly prohibited except in compliance with all applicable export laws and regulations. ? please contact your toshiba sales representative for details as to environmental matters such as the rohs compatibility of pr oduct. please use product in compliance with all applicable laws a nd regulations that regulate the inclusion or use of controlled substances, including without limitation, the eu rohs directive. toshiba assumes no liability for damages or losse s occurring as a resul t of noncompliance w ith applicable laws and regulations.

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