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10908 ms pc 20071217-s00001 / 90507 ms pc / 61307 ms pc 20070411-s00007 no.a0814-1/25 specifications of any and all sanyo semiconductor co.,l td. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer ' s products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer ' sproductsor equipment. any and all sanyo semiconductor co.,ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, av equipment, communication device, office equipment, industrial equ ipment etc.). the products mentioned herein shall not be intended for use for any "special application" (medica l equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, t ransportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of re liability and can directly threaten human lives in case of failure or malfunction of the product or may cause har m to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for app lications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. if there is n o consultation or inquiry before the intended use, our customer shall be solely responsible for the use. LV8741V overview the LV8741V is a pwm current-control stepping motor driver ic. features ? single-channel pwm current control stepping motor driver (selectable with dc motor driver channel 2) incorporated. ? bicdmos process ic ? on resistance (upper side : 0.5 ? ; lower side : 0.5 ? ; total of upper and lower : 1.0 ? ; ta = 25 c, i o = 1.5a) ? excitation mode can be set to 2-phase, 1-2 phase full torque, 1-2 phase or w1-2 phase ? excitation step proceeds only by step signal input ? motor holding current selectable in four steps ? i o max = 1.5a ? output-stage push-pull structure enabling high-speed operation ? output short-circuit protection circuit (selectable from latch-type or auto reset-type) incorporated ? thermal shutdown circuit and power supply monitor circuit incorporated ? supports control power supply v cc = 3.3v specifications absolute maximum ratings at ta = 25 c parameter symbol conditions ratings unit supply voltage 1 v m max 38 v supply voltage 2 v cc max 6v output peak current i o peak tw 10ms, duty 20% 1.75 a output current i o max 1.5 a logic input voltage v in -0.3 to v cc +0.3 v emo input voltage vemo -0.3 to v cc +0.3 v continued on next page. bi-cmos lsi pwm current control stepping motor driver orderin g numbe r : ena0814b
LV8741V no.a0814-2/25 continued from preceding page. parameter symbol conditions ratings unit allowable power dissipation 1 pd max1 independent ic 0.55 w allowable power dissipation 2 pd max2 * our recommended two-layer substrate *1, *2 2.9 w operating temperature topr -20 to +85 c storage temperature tstg -55 to +150 c *1 specified circuit board : 90 90 1.7mm 3 : glass epoxy printed circuit board *2 for mounting to the backside by soldering, refer the precautions. recommended operating conditions at ta = 25 c parameter symbol conditions ratings unit supply voltage range 1 v m 9.5 to 35 v supply voltage range 2 v cc 2.7 to 5.5 v vref input voltage range vref 0 to v cc -1.8 v electrical characteristics at ta = 25c, v m = 24v, v cc = 5v, vref = 1.5v ratings parameter symbol conditions min typ max unit standby mode current drain 1 imstn st = ?l? 150 200 a current drain 1 im st = ?h?, oe = ?h?, no load 0.75 1 ma standby mode current drain 2 i cc stn st = ?l? 110 160 a current drain 2 i cc st = ?h?, oe = ?h?, no load 2.5 3 ma v cc low-voltage cutoff voltage vthv cc 2.2 2.35 2.5 v low-voltage hysteresis vo ltage vthhis 100 150 200 mv thermal shutdown temperature tsd design guarantee 180 c thermal hysteresis width ? tsd design guarantee 40 c ronu i o = 1.5a, upper-side on resistance 0.5 0.7 ? output on-resistance rond i o = 1.5a, lower-side on resistance 0.5 0.6 ? output leakage current i o leak 50 a diode forward voltage 1 vd1 id = -1.0a 1 1.3 v diode forward voltage 2 vd2 id = -1.5a 1.1 1.5 v i in l v in = 0.8v 3 8 15 a logic pin input current i in h v in = 5v 30 50 70 a logic high-level input voltage v in h 2.0 v logic low-level input voltage v in l 0.8 v step 0(when initialized : channel 1 comparator level) 0.485 0.5 0.515 v step 1 (initial state+1) 0.485 0.5 0.515 v step 2 (initial state+2) 0.323 0.333 0.343 v w1-2-phase drive step 3 (initial state+3) 0.155 0.167 0.179 v step 0 (when initialized: channel 1 comparator level) 0.485 0.5 0.515 v 1-2 phase drive step 2 (initial state+1) 0.323 0.333 0.343 v step 0 (initial state, channel 1 comparator level) 0.485 0.5 0.515 v 1-2 phase (full torque) drive step 2 (initial state+1) 0.485 0.5 0.515 v current selection reference voltage level 2 phase drive step 2 0.485 0.5 0.515 v chopping frequency fchop rchop = 20k ? 45 62.5 75 khz vrf00 att1 = l, att2 = l 0.485 0.5 0.515 v vrf01 att1 = h, att2 = l 0.323 0.333 0.343 v vrf10 att1 = l, att2 = h 0.237 0.25 0.263 v current setting reference voltage vrf11 att1 = h, att2 = h 0.155 0.167 0.179 v vref pin input current iref vref = 1.5v -0.5 a continued on next page.
LV8741V no.a0814-3/25 continued from preceding page. ratings parameter symbol conditions min typ max unit charge pump vreg5 output voltage vreg5 i o = -1ma 4.5 5 5.5 v vg output voltage vg 28 28.7 29.8 v rise time tong vg = 0.1 f 0.5 ms oscillator frequency fosc rchop = 20k ? 90 125 150 khz output short-circuit protection emo pin saturation voltage iemo = 1ma 50 100 mv package dimensions unit : mm (typ) 3333 sanyo : ssop44k(275mil) 15.0 7.6 (3.5) (4.7) 5.6 0.5 0.22 0.2 0.65 (0.68) 0.1 (1.5) 1.7max top view side view side view bottom view 122 23 44
LV8741V no.a0814-4/25 substrate specifications (substrate recommended for operation of LV8741V) size : 90mm 90mm 1.7mm (two-layer substrate [2s0p]) material : glass epoxy copper wiring density : l1 = 90% / l2 = 95% l1 : copper wiring pattern diagram l2 : copper wiring pattern diagram cautions 1) the data for the case with the exposed die-pad substrate mounted shows the values when 95% or more of the exposed die-pad is wet. 2) for the set design, employ the derating design with sufficient margin. stresses to be derated include the voltage, current, junctio n temperature, power loss, and mechanical stresses such as vibration, impact, and tension. accordingly, the design must ensure these stresses to be as low or small as possible. the guideline for ordinary derating is shown below : (1)maximum value 80% or less for the voltage rating (2)maximum value 80% or less for the current rating (3)maximum value 80% or less for the temperature rating 3) after the set design, be sure to verify the design with the actual product. confirm the solder joint state and verify also the re liability of solder joint for the exposed die-pad, etc. any void or deterioration, if observed in the solder jo int of these parts, causes deteriorated thermal conduction, possibly resulting in thermal destruction of ic. 0 1.0 2.0 4.0 3.0 2.90 2.05 1.51 1.07 ? 20 40 60 80 20 010 0 ambient temperature, ta ? c allowable power dissipation, pd max ? w pd max ? ta two-layer circuit board 1 *1 two-layer circuit board 2 *2 *1 with components mounted on the exposed die-pad board *2 with no components mounted on the exposed die-pad board
LV8741V no.a0814-5/25 pin assignment 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 vm cp2 vg cp1 pgnd v cc nc vreg5 gnd att2 nc att1 nc nc out1 a emo vm1 cem rf1 emm out1b rchop out2 a moni vm2 rst rf2 stp/dc22 out2b fr/dc21 nc md2/dc12 nc nc gnd md1/dc11 nc dm nc oe nc st sgnd vref top view LV8741V
LV8741V no.a0814-6/25 block diagram att1 att2 emm dm cem emo oe rst stp/ dc22 fr/ dc21 md2/ dc12 md1/ dc11 rchop st tsd lvs vref v cc sgnd vreg5 moni vm pgnd cp1cp2 vg rf1 out1a out1b out2a out2b rf2 vm2 vm1 + - + - + - + - + - output preamplifier stage output preamplifier stage output preamplifier stage output preamplifier stage output control logic current selection (w1-2/1-2/ 1-2full/2) current selection (w1-2/1-2/ 1-2full/2) charge pump regulator oscillation circuit attenuator (4 levels selectable)
LV8741V no.a0814-7/25 pin functions pin no. pin name description 36 vm1 channel 1 motor power supply pin 37 out1a channel 1 outa output pin 34 out1b channel 1 outb output pin 35 rf1 channel 1 current-sense resistor connection pin 32 vm2 channel 2 motor power supply connection pin 33 out2a channel 2 outa output pin 30 out2b channel 2 outb output pin 31 rf2 channel 2 current-sense resistor connection pin 42 pgnd power system ground 12 moni position detection monitor pin 14 stp/dc22 stm step signal input pin/dcm2 output control input pin 22 vref constant current control reference voltage input pin 18 md1/dc11 stm excitation mode switch ing pin/dcm1 output control input pin 16 md2/dc12 stm excitation mode switch ing pin/dcm1 output control input pin 13 rst reset signal input pin 20 oe output enable signal input pin 15 fr/dc21 stm forward/reverse rotation sig nal input pin/dcm2 output control input pin 6 att1 motor holding current switching pin 5 att2 motor holding current switching pin 21 st chip enable pin 44 vm motor power supply connection pin 3 v cc logic power supply connection pin 23 sgnd signal system ground 11 rchop chopping frequency setting resistor connection pin 19 dm drive mode (stm/dcm) switching pin 4 vreg5 internal power supply capacitor connection pin 2 cp1 charge pump capacitor connection pin 1 cp2 charge pump capacitor connection pin 43 vg charge pump capacitor connection pin 8 emo output short-circuit state warning output pin 10 emm overcurrent mode switching pin 9 cem pin to connect the output short-circuit state detection time setting capacitor 27,40 gnd ground 7, 17, 24, 25, 26, 28, 29, 38, 39, 41 nc no connection (no internal connection to the ic)
LV8741V no.a0814-8/25 equivalent circuits pin no. pin equivalent circuit 5 6 10 13 14 15 16 18 19 20 21 att2 att1 emm rst stp/dc22 fr/dc21 md2/dc12 md1/dc11 dm oe st 30 31 32 33 34 35 36 37 42 out2b rf2 vm2 out2a out1b rf1 vm1 out1a pgnd 1 2 43 44 cp2 cp1 vg vm continued on next page. v cc 5k? 100k? gnd 32 36 31 42 35 37 33 34 30 gnd v cc 100? gnd vreg5 2 44 1 43
LV8741V no.a0814-9/25 continued from preceding page. pin no. pin equivalent circuit 22 vref 4 vreg5 12 moni continued on next page. gnd v cc 500? gnd vm 26k? 78k? 2k? v cc gnd 500?
LV8741V no.a0814-10/25 continued from preceding page. pin no. pin equivalent circuit 8 emo 9 cem 11 rchop v cc gnd 500? v cc gnd 1k? v cc gnd
LV8741V no.a0814-11/25 input pin function (1) chip enable function this ic is switched between standby and operating mode by setting the st pin. in standby mode, the ic is set to power-save mode and all logic is reset. in addition, the internal regulator circuit and charge pump circuit do not operate in standby mode. st mode internal regulator charge pump low or open standby mode standby standby high operating mode operating operating (2) drive mode switching pin function the ic drive mode is switched by setting the dm pin. in stm mode, stepping motor channel 1 can be controlled by the clk-in input. in dcm mode, dc motor channel 2 or stepping motor channel 1 can be controlled by parallel input. stepping motor control using parallel input is 2-phase or 1-2 phase full torque. dm drive mode application low or open stm mode stepping motor channel 1 (clk-in) high dcm mode dc motor channel 2 or stepping motor channel 1 (parallel) stm mode (dm = low or open) (1) step pin function input st stp operating mode low * standby mode high excitation step proceeds high excitation step is kept (2) excitation mode setting function initial position md1 md2 excitation mode channel 1 channel 2 low low 2 phase excitation 100% -100% high low 1-2 phase excitation (full torque) 100% 0% low high 1-2 phase excitation 100% 0% high high w1-2 phase excitation 100% 0% this is the initial position of each excitation mode in th e initial state after power-on and when the counter is reset. (3) constant-current control reference voltage setting function att1 att2 current setting reference voltage low low vref/3 100% high low vref/3 67% low high vref/3 50% high high vref/3 33% the voltage input to the vref pin can be switched to four-step settings as the reference voltage for setting the output current . this is effective for reducing power consumption when motor holding current is supplied. set current value calculation method the reference voltage is set by the voltage applied to the vref pin and the two inputs att1 and att2. the output current (output curr ent at a constant-current drive cu rrent ratio of 100%) can be set from this reference voltage and the rf resistance value. i out = (vref/3 voltage setting ratio)/rf resistor (example) when vref = 1.5v, setting current ratio = 100% [(att1, att2) = (low, low)] and rf resistor = 0.5 ? , the following output current flows : i out = 1.5v/3 100%/0.5 ? = 1a
LV8741V no.a0814-12/25 (4) reset function rst operating mode high normal operation low reset state when the rst pin is set low, the output excitation position is forced to the initial state, and the moni output also goes low. when rst is set high after that, the excitation position proceeds to the next step input. (5) output enable function oe operating mode low output off high output on when the oe pin is set low, the output is forced off and goes to high impedance. however, the internal logic circuits are operating, so th e excitation position proceeds when the step signal is input. therefore, when oe is returned to high, the output level conforms to the excitation position proceeded by the step input. rst reset 0% step moni 1ch output 2ch output initial state oe power save mode 0% step moni 1ch output 2ch output output is high-impedance
LV8741V no.a0814-13/25 (6) forward/reverse switching function fr operating mode low clockwise (cw) high counter-clockwise (ccw) the internal d/a converter proceeds by one bit at the rising edge of the input step pulse. in addition, cw and ccw mode are switched by setting the fr pin. in cw mode, the channel 2 current phase is delayed by 90 relative to the channel 1 current. in ccw mode, the channel 2 current phase is adva nced by 90 relative to the channel 1 current. (7) setting the chopping frequency for constant-current control, chopping operation is made with the frequency determined by the external resistor (connected to the rchop pin). the chopping frequency to be set with the resistance connected to the rcho p pin (pin 11) is as shown below. fr cw mode cw mode ccw mode step excitation position 1ch output 2ch output (1) (2) (3) (4) (5) (6) (5) (4) (3) (4) (5) pca01883 0 20 40 60 80 100 030 20 40 10 50 60 rchop ? k ? fchop ? khz chopping frequency settings (reference data)
LV8741V no.a0814-14/25 (8) output current vector locus (o ne step is normalized to 90 degrees) setting current ration in each excitation mode w1-2 phase (%) 1-2 phase (%) 1-2 phase full torque (%) 2-phase (%) step channel 1 channel 2 channel 1 channel 2 channel 1 channel 2 channel 1 channel 2 0 0 100 0 100 0 100 1 33.3 100 2 66.7 66.7 66.7 66.7 100 100 100 100 3 100 33.3 4 100 0 100 0 100 0 0.0 33.3 66.7 100.0 0.0 33.3 66.7 100.0 channel 2 current ratio (%) 2 (2-phase/ 1-2 phase full torque) 0 1 2 3 4 channel 1 phase current ratio (%)
LV8741V no.a0814-15/25 (9) typical current waveform in each excitation mode 2-phase excitation (cw mode) 1-2 phase excitation full torque (cw mode) step moni l1 (%) (%) -100 -100 100 100 0 0 i2 step moni i1 (%) (%) -100 -100 100 100 0 0 i2
LV8741V no.a0814-16/25 1-2 phase excitation (cw mode) w1-2 phase excitation (cw mode) step moni i1 (%) -100 -100 100 (%) 100 0 0 i2 step moni i1 (%) -100 -100 100 (%) 100 0 0 i2
LV8741V no.a0814-17/25 fast slow charge fast slow charge current mode fchop coil current step set current set current forced charge section forced charge section fast slow fast slow charge current mode fchop coil current step set current set current forced charge section charge (10) current control operation specification (sine wave increasing direction) (sine wave decreasing direction) in each current mode, the operation sequence is as described below : ? at rise of chopping frequency, the charge mode begins.(the section in which the charge mode is forced regardless of the magnitude of the coil current (icoil) and set current (iref) exists for 1/16 of one chopping cycle.) ? the coil current (icoil) and set current (iref) ar e compared in this forced charge section. when (icoil LV8741V no.a0814-18/25 dcm mode (dm-high) (1) dcm mode output control logic parallel input output dc11 (21) dc12 (22) out1 (2) a out1 (2) b mode low low off off standby high low high low cw (forward) low high low high ccw (reverse) high high low low brake (2) reset function rst operating mode moni high or low reset operation not performed high output the reset function does not operate in dcm mode. in addition, the moni output is high, regardless of the rst pin state. (3) output enable function oe operating mode low output off high output on when the oe pin is set low, the output is forced off and goes to high impedance. when the oe pin is set high, output conforms to the control logic. (4) current limit control time chart (5) current limit reference voltage setting function att1 att2 current setting reference voltage low low vref/3 100% high low vref/3 67% low high vref/3 50% high high vref/3 33% the voltage input to the vref pin can be switched to four-step settings as the reference voltage for setting the current limit. set current calculation method the reference voltage is set by the voltage applied to the vref pin and the two inputs att1 and att2. the current limit can be set from this reference voltage and the rf resistance value. ilimit = (vref/3 current setting ratio) /rf resistance (example) when vref = 1.5v, setting current ratio = 100% [(att1, att2) = (low, low)] and rnf1 (2) = 0.5 ? , the current limit value is as follows : ilimit = 1.5v/3 100%/0.5 ? = 1a charge fchop forced charge section coil current set current current mode slow current mode
LV8741V no.a0814-19/25 (6) typical current waveform in each excitation mode when stepping motor parallel input control 2-phase excitation (cw mode) 1-2 phase excitation full torque (cw mode) dc11 dc12 dc21 dc22 l out 1 l out 2 (%) -100 -100 100 (%) 100 0 0 dc11 dc12 dc21 dc22 l1 l2 -100 -100 0 0 (%) 100 (%) 100
LV8741V no.a0814-20/25 output short-circuit protection circuit to protect the ic from damage due to short-circuit of the output caused by lightening or ground fault, the output short-circuit protection circuit to put the output in standby mode and turn on the alarm output is incorporated. note that when the rf pin is short-circuited to gnd, this output short-circuit protection is not effective against shorting to power. (1) output short-circuit protec tion operation changeover function changeover to the output short-circuit protection of ic is made by the setting of ocpm pin. emm state low or open auto reset method high latch method (2) auto reset method when the output current is below the output short-circuit protection current, the output is controlled by the input signal. when the output current exceeds the detection current, the switching waveform as shown below appears instead. (when a 20k ? resistor is inserted between rchop and gnd) when detecting the output short-circuit state, the short-circuit detection circuit is activated. when the short-circuit detection circuit operation exceeds the timer latch time described later, the output is changed over to the standby mode and reset to the on mode again in 256 s (typ). in this event, if the overcurrent mode still continues, the above switching mode is repeated till the overcurrent mode is canceled. (3) latch method similarly to the case of automatic reset method, the short-circuit detection circuit is activated when it detects the output short-circuit state. when the short-circuit detection circuit operation exceeds the timer latch time described later, the output is changed over to the standby mode. in this method, latch is released by setting ps = ?l? (4) output short-circuit condition warning output pin emo, warning output pin of the output short-circuit protection circuit, is an open-drain output. emo outputs on when output short-circuit is detected. on 1v off 1 to 2s tscp 256s (typ) off on on ocp voltage output current exceeding the over-current detection current
LV8741V no.a0814-21/25 (5) timer latch time (tscp) the time to output off when an output short-circuit occu rs can be set by the capacitor connected between the cem pin and gnd. the capacitor (c) value can be determined as follows : timer latch : tscp tscp td+c v/i [sec] td : internal delay time typ 4 s v : threshold voltage of comparator typ 1v i : cem charge current typ 2.5 a the tscp time must be set so as no t to exceed 80% of the chopping period. the cen pin must be connected to (s) gnd when the output short protection funtion is not to be used. charge pump circuit when the st pin is set high, the charge pump circuit operat es and the vg pin voltage is boosted from the vm voltage to the vm + vreg5 voltage. if the vg pi n voltage is not boosted sufficiently, the output cannot be controlled, so be sure to provide a wait time of tong or more after settin g the st pin high before starting to drive the motor. vg pin voltage schematic view when controlling the stepping motor driver with the clk-in input, set the st pin high, wait for the tong time duration or longer, and then set the oe pin high. in addition, when controlling the stepping motor and dc motor driver with parallel input, set the st pin high, wait for the tong time duration or longer, and then start the control for each channel. tong st oe (stm mode) dc11, dc12, dc21 and dc22 (dcm mode) vm+vreg5 vm+4v vm vg pin voltage high after the tong wait time has elapsed
LV8741V no.a0814-22/25 recommended power-on sequence provide a wait time of 10 s or more after the v cc power supply rises before supplying the motor power supply. provide a wait time of 10 s or more after the motor power supply rises before setting the st pin high. the above power-on sequence is only a re commendation, and there is no risk of damage to the ic even if this sequence is not followed. notes on board design layout ? use thick gnd lines and connect to gnd stabilization points by the shortest distance possible to lower the impedance. ? use thick vm, vm1 and vm2 lines, and short-circuit these lines to each other by a short distance. ? place the capacitors connected to v cc and vm as close to the ic as possible, and connect each capacitor to a separate gnd stabilization point using a thick independent line. ? place the rf resistor as near to th e ic as possible, and connect it to th e gnd stabilization point using a thick independent line. ? when thermal radiation is necessary for the exposed die-pad on the bottom of the ic, solder it to gnd. also, do not connect the exposed die-pad to other than gnd. st vm v cc 10s or longer 10s or longer
LV8741V no.a0814-23/25 application circuits ? stepping motor driver application circuit example the setting conditions for the above circuit diagram example are as follows : ? 2-phase excitation (md1/dc11 = low, md2/dc12 = low) ? auto recovery-type output short-ci rcuit protection function (emm = low) ? reset function fixed to normal operation (rst = high) ? chopping frequency : 37khz (rchop = 43k ? ) att1 att2 current setting reference voltage l l vref/3100% h l vref/367% l h vref/350% h h vref/333% the set current value is as follows : i out = (vref/3 voltage setting ratio) /0.25 ? 0.1f vreg5 att2 att1 nc emo cem emm rchop moni rst stp/dc22 fr/dc21 md2/dc12 md1/dc11 dm oe st vref nc v cc vm vg nc gnd nc nc out1a vm1 rf1 out1b out2a vm2 rf2 out2b nc gnd nc nc nc gnd nc pgnd 0.1f 0.1f 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 LV8741V -+ +- +- 0.1f 0.25? 43k? 20k? 0.25? m 10f 0.1f +- logic input logic input logic input cp2 cp1
LV8741V no.a0814-24/25 ? dc motor driver application circuit example the setting conditions for the above circuit diagram example are as follows : ? auto recovery-type output short-ci rcuit protection function (emm = low) ? output enable function fixed to output on state (oe = high) ? current limit refere nce voltage setting = 100% (att1 = low, att2 = low) ? chopping frequency : 37khz (rchop = 43k ? ) the current limit value is as follows : ilimit = (vref/3) /0.25 ? 0.1f vreg5 att2 att1 nc emo cem emm rchop moni rst stp/dc22 fr/dc21 md2/dc12 md1/dc11 dm oe st vref nc v cc vm vg nc gnd nc nc out1a vm1 rf1 out1b out2a vm2 rf2 out2b nc gnd nc nc nc gnd nc pgnd 0.1f 0.1f 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 LV8741V -+ +- +- 0.1f 0.25? 1ch dc moto r 2ch dc moto r 43k? 20k? 0.25? m 10f m 0.1f +- 1ch control logic inputs 2ch control logic inputs logic input cp2 cp1
LV8741V ps no.a0814-25/25 sanyo semiconductor co.,ltd. assumes no responsib ility for equipment failures that result from using products at values that exceed, even momentarily, rate d values (such as maximum ra tings, operating condition ranges, or other parameters) listed in products specif ications of any and all sanyo semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-qual ity high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. it is possible that these probabilistic failures or malfunction could give rise to acci dents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause dam age to other property. when designing equipment, adopt safety measures so that these kinds of accidents or e vents cannot occur. such measures include but are not limited to protective circuits and error prevention c ircuits for safe design, redundant design, and structural design. upon using the technical information or products descri bed herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of sanyo semiconductor co.,ltd. or any third party. sanyo semiconductor co.,ltd. shall not be liable f or any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. information (including circuit diagr ams and circuit parameters) herein is for example only; it is not guaranteed for volume production. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equi pment, refer to the "delivery specification" for the sanyo semiconductor co.,ltd. product that you intend to use. in the event that any or all sanyo semiconductor c o.,ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities conc erned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any in formation storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd. this catalog provides information as of january, 2008. specifications and information herein are subject to change without notice.

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