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?2000 fairchild semiconductor international www.fairchildsemi.com rev. 1.0.0 february. 2000. 1 features ? 3-channel balanced transformerless(btl) driver ? 1-channel forward-reverse control dc motor driver ? built-in thermal shutdown circuit ? built-in mute circuit ? operating supply voltage: 4.5~5.5v ? corresponds to 3.3v or 5v dsp description the KA3027D2 is a monolithic ic, suitable for a 1-ch (for- ward.reverse) control dc motor driver and a 3-ch motor driver which drives the focus actuator,tracking actuator, and sled motor of a cd-media system. 28-ssoph-300 typical applications ? notebook compact disk rom (cd-rom) ? other portable compact disk media ordering information device package operating temp. KA3027D2 28-ssoph-300 -35 c ~ 85 c KA3027D2tf 28-ssoph-300 -35 c ~ 85 c KA3027D2 4-channel motor driver
KA3027D2 2 pin assignments do1+ do1- pgnd2 do2+ do2- vm1,2 mute4 do3+ do3- pgnd1 vm3,4 do4+ do4- vcc in1.1 in1.2 out1 in2.1 in2.2 out2 in3 sgnd ctl fwd rev ref mute1,2 mute3 KA3027D2 (gnd) (gnd) fin fin 28 27 26 25 24 23 22 21 20 19 18 17 16 15 12 3 45 6 7 89 10 11 12 13 14
KA3027D2 3 pin definitions pin number pin name i/o pin function description 1v cc - signal v cc 2 do4- o drive4 output (-) 3 do4+ o drive4 output (+) 4 vm3, 4 - btl ch3, 4 power v cc 5 pgnd1 - ch3, 4 power ground 6 do3- o drive3 output (-) 7 do3+ o drive3 output (+) 8 mute4 - ch4 mute 9 vm1,2 - btl ch1, 2 power v cc 10 do2- o drive2 output (-) 11 do2+ o drive2 output (+) 12 pgnd2 - ch1,2 power ground 13 do1- o drive1 output (-) 14 do1+ o drive1 output (+) 15 in1.1 i op-amp ch1 input (+) 16 in1.2 i op-amp ch1 input (-) 17 out1 o op-amp ch1 output 18 in2.1 i op-amp ch2 input (+) 19 in2.2 i op-amp ch2 input (-) 20 out2 o op-amp ch2 output 21 in3 i op-amp ch3 input 22 sgnd - signal ground 23 ctl i ch4 motor speed control 24 fwd i ch4 forward 25 rev i ch4 reverse 26 ref i bias voltage input 27 mute1,2 i ch1, 2 mute 28 mute3 i ch3 mute
KA3027D2 4 internal block diagram + + + + + - + do1+ do1- pgnd2 do2+ do2- vm1,2 mute4 do3+ do3- pgnd1 vm3,4 do4+ do4- vcc in1.1 in1.2 out1 in2.1 in2.2 out2 in3 sgnd ctl fwd rev ref mute1,2 level shift + - - - - - - + + + - - - + + + - - + + + vm3,4 btlvm/2 - - - - 10k 10k 10k 10k 10k 20k 10k 10k 10k 10k 10k 10k 10k 10k 10k 10k level shift level shift btlvm/2 btlvm/2 btlvm/2 btlvm/2 btlvm/2 10k 10k vm1,2 vm3,4 vm3,4 m s c s w tsd mute4 mute3 mute3 mute1,2 vm1,2 vm1,2 1 234 5 6 7 89 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15
KA3027D2 5 equivalent circuits mute input power output ch3 level shift input signal reference input error amp input loading control input error amp output loading logic input 27 50 w 50k w 50k w 8 28 3 7 2 6 10 13 11 14 21 50 w 10k w 26 50 w 0.2k w 15 18 16 19 50 w 50 w 23 50 w 0.2k w 17 20 50 w 24 50 w 30k w 30k w 25
KA3027D2 6 absolute maximum ratings (ta = 25 c) note: 1. when mounted on a 76.2mm 114mm 1.57mm pcb (phenolic resin material). 2. power dissipation reduces 11.2mw/ c for using above ta = 25 c 3. do not exceed p d and soa(safe operating area). power dissipation curve recommended operating conditions (ta = 25 o c) parameter symbol value unit maximum supply volta g e v ccmax 7v power dissipation p d 1.4 note w operatin g temperature ran g et opr -35 ~ +85 c stora g e temperature ran g et stg -55 ~ +150 c parameter symbol min typ max unit supply volta g ev cc 4.5 - 5.5 v 0 1,200 2,000 pd (mw) pd (temporary) 0 25 50 85 100 125 150 175 ambient temperature, ta ( c) 400 soa
KA3027D2 7 electrical characteristics (unless otherwise specified, ta = 25 c, v cc = vm1,2 = vm3,4 = 5v) parameter symbol conditions min. typ. max. units quiescent current i cc vin = 0v - 8 12 ma ch mute on current i mutech pin27, pin28, pin8 = gnd - 1 3 ma ch mute on volta g ev monch pin27, pin28, pin8 = variation - - 0.5 v ch mute off volta g ev moffch pin27, pin28, pin8 = variation 2 - - v drive circuit input offset volta g ev io - -20 - +20 mv output offset volta g ev oo v in = 2.5v -40 - +40 mv maximum output volta g e1 v om1 rl = 8 w (ch1, 2) 2.7 3.4 - v maximum output volta g e2 v om2 rl = 24 w (ch3) 3 3.8 - v closed loop volta g e gain1 g vc1 f = 1khz, vin = 0.1v rms (ch1, 2) 10.5 12 13.5 db closed loop volta g e gain2 g vc2 f = 1khz, vin = 0.1v rms (ch3) 161820db ripple rejection ratio rr v in = 0.1v rms , f = 120hz - 60 - db slew rate sr v o = 2v p-p , f = 120khz - 0.8 - v/us error op amp circuit input offset volta g ev ofop - -7 - +7 mv input bias current i bop - - - 300 na hi g h level output volta g ev ohop - 4.5 4.8 - v low level output volta g ev olop - -0.20.5v output sink current i sink rl = 1k w 24 -ma output source current i source rl = 1k w 24 -ma open loop volta g e gain g vo v in = -75db, f = 1khz - 75 - db ripple rejection ratio rr op v in = -20db, f = 120hz - 65 - db slew rate sr op f = 120khz, 2vp-p - 1 - v/us common mode rejection ratio cmrr v in = -20db, f = 1khz - 80 - db common mode input ran g ev icm - -0.3 - 4.5 v tray drive circuit(v cc = vm 3,4 = 5v, rl = 45 w ) input hi g h level volta g ev ih - 2- -v input low level volta g ev il - --0.5v output volta g ev o v ctl = 3.5v 2.8 3.5 4.2 v output load re g ulation d v rl - - 300 700 mv output offset volta g e1 v oo1 v in = 5v, 5v -10 - +10 mv output offset volta g e2 v oo2 v in = 0v, 0v -10 - +10 mv
KA3027D2 8 application information 1. reference input pin 26 (ref) is a reference input pin. 1) reference input the applied voltage at the reference input pin must be between 1.5 (v) and 3.5 (v), when vcc = 5v. 2. separated channel mute function these pins are used for individual channel mute operation. 1) when the mute pins (pin27, 28 and 8) are low level, the mute circuits are enabled and the output circuits are muted. 2) when the voltages of the mute pins (pin27, 28 and 8) are high level, the mute circuits are disabled and the output circuits operate normally. 3) if the chip temperature rises above 175 c, then the thermal shutdown (tsd) circuit is activated and the output circuits are muted. mute1, 2 (pin 27)-ch1, 2 mute control input pin. mute3 (pin 28)-ch3 mute control input pin. mute4(pin8) - ch4 mute control input pin. 3. protection function thermal shutdown (tsd) 1) if the chip temperature rises above 175 c the thermal shutdown (tsd) circuit is activated and the output circuit is in the mute state, that is off state. the tsd circuit has a temperature hysteresis of 25 c. 4. focus, tracking actuator, sled motor drive circuit 1) the reference voltage ref is given externally through pin 26. 2) the error amp output signal is amplified by r2/r1 and then fed to the level shift circuit. 3) the level shift circuit produces the differential output voltages and drives the two output power amplifiers. since the differential gain of the output amplifiers is equal to 2 (1+ r4/ r3), the output signal of the error amp is amplified by (r2/r1) 2 (1+r4/r3). 4) if the total gain is insufficient, the input error amp can be used to increase the gain. 5) the bias voltage (vr) is about a half of the supply voltage(vm). - + level snift vin ea + - + - r1 r2 ap1 +- vref error amp + + - - ap2 ap3 r3 r3 vr r4 r4 power amp m 26 21 15 18 16 19 17 20
KA3027D2 9 5. tray motor drive circuit 1) rotational direction control - the forward and reverse rotational direction is controlled by fwd (pin 24) and rev (pin 25) inputs. conditions are as follows. - vr(power reference voltage) is (vm34-vbe) / 2 2) motor speed control - the motor speed is proportional to the differential voltage between the pin3(do4+) and the pin2(do4-). - by applying the voltage to the pin23 of ctl, the motor speed can be controlled and it is linearly proportional to the applied control voltage. - when both vm3,4 and vcc are 5v, and the applied control voltage is higher than 4v, the motor speed is not proportional to the control voltage but the motor speed becomes constant. - if the pin23 is opened, the motor torque becomes maximum. - the maximum output swing is 3.8v, when vm3,4 and vcc are 5v. input output fwd rev do4+ do4- state h h vr vr brake hlhlforward lhlhreverse l l vr vr brake level shift fwd rev in in m. s. c s. w 25 d d m do4- do4+ ctl 24 23 2 3
KA3027D2 10 typical performance characteristics < v cc & i cc > v cc (v) i cc (ma) ta=25 vcc=vm12=vm34 < v cc & v om > v cc (v) v om (v) ta=25 vcc=vm12=vm34 rl1=8ohm (ch1,2) rl2=24ohm(ch3) < i om & vout > i om (a) v out (v) ch1 upp. ch1 low ch2 upp. ch2 low ch3 upp. ch3 low ta=25 vcc=vm12=vm34 < v cc & g vc > v cc (v) g vc (db) ch1 ch2 ch3 ta=25 vcc=vm12=vm34 rl1=8ohm (ch1,2) rl2=24ohm(ch3) < v cc & i source (error amp) > v cc (v) i source (ma) ch1 ch2 ta=25 rl=1kohm < v cc & i sink (error amp) > v cc (v) i sink (ma) ch1 ch2 ta=25 rl=1kohm
KA3027D2 11 typical performance characteristics ( continued) < i load & v o (load regulation (tray part) )> i load (a) v o (v) do4+ do4- ta=25 vcc=8v, ctl=3.5v fwd=5v, rev=0v do4+ fwd=0v, rev=5v do4- < ctl & output vtg (tray part) > ctl (v) v o (v) ta=25 vcc=13v rl=24ohm fwd=5v, rev=0v < temp & g vc > temp ( ) g vc (db) vcc=vm12=vm34=5v rl1=8ohm (ch1,2) rl2=24ohm(ch3) < temp & output vtg (tray part) > temp ( ) v o (v) vo1 vo2 vcc=vm34=8v ctl=6.8v vo1 vcc=vm34=13v ctl=9.5v vo2 rl=24ohm
KA3027D2 12 typical application circuits 1 (differential pwm control mode) thermal shut down circuit the ic over heats above 175 c and fails when overload condition continues for a long time. so, KA3027D2 has a thermal shut down circuit to prevent this conditon. 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 do1+ do1- pgnd2 do2+ do2- vm1,2 mute4 do3+ do3- pgnd1 vm3,4 do4+ do4- vcc in1.1 in1.2 out1 in2.1 in2.2 out2 in3 sgnd ctl fwd rev ref mute1,2 mute3 KA3027D2 servo amp focus tracking pwm1 forward reverse control (tray) bias voltage focus, tracking mute sled mute sled motor vcc tray motor 5v tracking actuator focus actuator 5v sled pwm1 pwm2 pwm2 bias bias tray mute 5v
KA3027D2 13 typical application circuits 2 (voltage control mode) ref 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 do1+ do1- pgnd2 do2+ do2- vm1,2 mute4 do3+ do3- pgnd1 vm3,4 do4+ do4- vcc in1.1 in1.2 out1 in2.1 in2.2 out2 in3 sgnd ctl fwd rev ref mute1,2 mute3 KA3027D2 servo amp focus tracking forward reverse control (tray) bias voltage focus, tracking mute sled mute sled motor vcc tray motor 5v tracking actuator focus actuator 5v sled tray mute 5v
28-ssoph-300 #1 #14 #15 #28 0.60 0.20 0.024 0.008 13.70 0.20 0.539 0.008 0.40 0.10 0.016 0.004 0.80 0.031 7.62 0.300 1.70 0.20 0.067 0.008 0.05 0.002 7.80 0.30 0.307 0.012 5.40 0.20 0.213 0.008 14.10 0.555 0~8 0.85 0.033 () 2.00 0.078 max0.10 max0.004 max max max min + 0.10 -0.05 0.20 + 0.004 -0.002 0.008
trademarks the following are registered and unregistered trademarks fairchild semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. life support policy fairchilds products are not authorized for use as critical components in life support devices or systems without the express written approval of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 2. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. product status definitions definition of terms datasheet identification p roduct status definition advance information preliminary no identification needed obsolete this datasheet contains the design specifications for product development. specifications may change in any manner without notice. this datasheet contains preliminary data, and supplementary data will be published at a later date. fairchild semiconductor reserves the right to make changes at any time without notice in order to improve design. this datasheet contains final specifications. fairchild semiconductor reserves the right to make changes at any time without notice in order to improve design. this datasheet contains specifications on a product that has been discontinued by fairchild semiconductor. the datasheet is printed for reference information only. formative or in design first production full production not in production disclaimer fairchild semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. fairchild does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others. qfet? qs? qt optoelectronics? quiet series? supersot?-3 supersot?-6 supersot?-8 syncfet? tinylogic? uhc? fastr? globaloptoisolator? gto? hisec? isoplanar? microwire? optologic? optoplanar? pop? powertrench ? rev. f1 acex? bottomless? coolfet? crossvolt? dome? e 2 cmos tm ensigna tm fact? fact quiet series? fast ? vcx?

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