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4-channel btl motor driver for cd-rom/dvd AZ5954 1 data sheet apr. 2005 rev. 1. 1 bcd semiconductor manufacturing limited general description the AZ5954 is a four-channel btl driver ic for driv- ing the motors and actuators in products such as cd- rom and dvd. two of the channels use current feed- back to minimize the curren t phase shift caused by the influence of load inductance. the ic is used in cd- rom drivers and dvd drivers, etc. the AZ5954 is availabl e in hsop-28 package. features wide dynamic range (3.9v(typ.) when v cc = 12v, pv cc =5v and r l =8 ? ) level shift circuit on chip thermal shutdown circuit on chip internal standby mode applications cd-rom driver dvd driver hsop-28 figure 1. package type of AZ5954
4-channel btl motor driver for cd-rom/dvd AZ5954 2 data sheet apr. 2005 rev. 1. 1 bcd semiconductor manufacturing limited pin configuration m package (hsop-28) figure 2. pin configuration of AZ5954 (top view) 2 9 10 11 12 13 14 8 6 1 3 4 5 7 28 27 26 25 24 23 22 21 20 19 18 17 15 16 stby bias v in tk ctkerr1 ctkerr2 v in ld gnd pv cc2 vnftk pgnd vold- vold+ votk- votk+ vinfc cfcerr1 cfcerr2 v in sl+ v in sl- vosl vnffc v cc pv cc1 pgnd vosl- vosl+ vofc- vofc+ fin (gnd) fin (gnd)
3 bcd semiconductor manufacturing limited apr. 2005 rev. 1. 1 4-channel btl motor driver for cd-rom/dvd AZ5954 data sheet pin number pin name function 1 vinfc focus driver input 2 cfcerr1 for connection of capacitor for the error amp filter 3 cfcerr2 for connection of capacitor for the error amp filter 4 v in sl+ op amp input (+) for the sled driver 5 v in sl- op amp input (-) for the sled driver 6 vosl op amp output for the sled driver 7 vnffc focus driver feedback pin 8 v cc supply voltage 9 pv cc1 power supply voltage for sled driver block 10 pgnd ground for sled driver block 11 vosl- sled driver output (-) 12 vosl+ sled driver output (+) 13 vofc- focus driver output (-) 14 vofc+ focus driver output (+) 15 votk+ tracking driver output (+) 16 votk- tracking driver output (-) 17 vold+ loading driver output (+) 18 vold- loading driver output (-) 19 pgnd ground for actuator driver block 20 vnftk tracking driver feedback pin 21 pv cc2 power supply voltage for actuator driver block 22 gnd ground 23 v in ld loading driver input 24 ctkerr2 for connection of capacitor for the error amp filter 25 ctkerr1 for connection of capacitor for the error amp filter 26 v in tk tracking driver input 27 bias bias input 28 stby standby control note 1: the indicated polarities for the ou tput pin are for when all inputs are (+). the outptut h bridge power supply pins are pv cc2 for the focus, tracking channel, pv cc1 for the loading channel, and v cc for the pre-block and sled channel. always ensure that v cc pv cc. pin description (note 1)
4-channel btl motor driver for cd-rom/dvd AZ5954 4 data sheet apr. 2005 rev. 1. 1 bcd semiconductor manufacturing limited figure 3. functional block diagram of AZ5954 functional block diagram 7.5k 20k 10k 2 10k 25k sled driver acuator driver 20k 10k 7.5k 7.5k loading driver actuator driver stby bias v in tk ctkerr1 ctkerr2 v in ld gnd pv cc2 vnftk pgnd vold- vold+ votk- votk+ v in fc cfcerr1 cfcerr2 v in sl+ v in sl- vosl vnffc v cc pv cc1 pgnd vosl- vosl+ vofc- vofc+ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 stand- by thermal shut down 10k pv cc2 pv cc1 pv cc2 v cc v cc pv cc1 7.5k 15k 2
5 bcd semiconductor manufacturing limited apr. 2005 rev. 1. 1 4-channel btl motor driver for cd-rom/dvd AZ5954 data sheet package temperature range part number marking id packing type tin lead lead free tin lead lead free hsop-28 0 to 70 o c AZ5954m28 AZ5954m28-e1 AZ5954m28 AZ5954m28-e1 tube parameter symbol value unit supply voltage v cc , pv cc1/2 13.5 v power dissipation p d 1.7 (note 3) w storage temperature range t stg -55 to 150 o c note 2: stresses greater than those listed under "absolute maximum ratings" may cause permanent damage to the device. these are stress ratings only, and functional operat ion of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. exposure to "absolute maximum ratings" for extended periods ma y affect device reliability. note 3: the power dissipation is reduced by 13.6mw for each increase in temperature of 1 o c over 25 o c. absolute maximum ratings (note 2) parameter symbol min max unit supply voltage v cc 4.0 13.2 v pv cc1 4.0 v cc v pv cc2 4.0 v cc v operating temperature t a 0 70 o c recommended operating conditions ordering information bcd semiconductor's pb-free products, as designated with "e1" suffix in th e part number, are rohs compliant. circuit type package m28: hsop-28 e1: lead free blank: tin lead AZ5954 -
4-channel btl motor driver for cd-rom/dvd AZ5954 6 data sheet apr. 2005 rev. 1. 1 bcd semiconductor manufacturing limited parameter symbol test conditions min typ max unit quiescent current cc 18 27 ma standby current st 0.5 ma standby-on voltage v ston all channels off 0 0.5 v standby-off voltage v stoff all channels on 2.0 v actuator driver output offset current i oo -6 6 ma maximum output amplitude v om v in = v bias 1.5v 3.6 3.9 v transmission gain gm v in = v bias 0.2v 1.3 1.55 1.7 a/v sled motor driver/pre op amp common input voltage range v icm v bias = 6v -0.3 11.0 v v cc = pv cc1 = 5v -0.3 4.0 v input bias current i ib 14 300 na output low level voltage v ol 0.1 0.3 v output source current i so 0.3 0.58 ma output sink current i si 1ma sled motor driver output offset voltage v oofsl -100 100 mv maximum output voltage v omsl v in =v bias 1.5v 7.5 8.8 v closed-loop voltage gain g vsl v in =v bias 0.2v 18.0 20.0 22.0 db loading motor driver output offset voltage v oofld v in = v bias 0.2v -50 50 mv maximum output voltage v omld v in = v bias 2.0v 7.5 8.7 v v in = v bias 1.5 v v cc = pv cc1 = 5v 3.6 3.9 v closed-loop voltage gain g vld v in = v bias 0.2v 13.5 15.5 17.5 db gain error by polarity ? g vld v in = v bias 0.2v 012db (t a = 25 o c, v cc = 12v, pv cc1 = pv cc2 = 5v, v bias = 2.5v, r l1 = r l2 = r l3 = r l4 = 8 ? , r d = 0.5 ? , c fc =c tk = 100pf, unless otherwise specified.) electrical characteristics
7 bcd semiconductor manufacturing limited apr. 2005 rev. 1. 1 4-channel btl motor driver for cd-rom/dvd AZ5954 data sheet figure 4. test circuit of AZ5954 test circuit i o2 i o1 28 25 22 23 24 26 27 15 16 17 18 19 20 21 1 4 7 6 5 3 2 14 13 12 11 10 9 8 v o4 r l4 r d v o1 a r l1 r d v o2 a r l2 v o3 r l3 a v 100 h 100 h -+ -+ + - - + + - + - i cc v1 100 f 16v vop v in3 100pf v in1 v st v bias v in2 100pf v in4 v2 100 f 16v vold- vold+ votk- votk+ vosl- vosl+ vofc- vofc+ AZ5954
4-channel btl motor driver for cd-rom/dvd AZ5954 8 data sheet apr. 2005 rev. 1. 1 bcd semiconductor manufacturing limited figure 7. driver i/o characteristics (sled) figure 8. op amp i/o characteristics figure 5. driver i/o characteristics (focus and tracking) figure 6. driver i/o characteristics (loading) -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 -4 -2 0 2 4 v cc =12v pv cc1 =pv cc2 =5v v bias =2.5v output voltage: v o (v) input voltage: v in (v) r l =4 ? +100uh r l =8 ? +100uh r l =12 ? +100uh r l =20 ? +100uh -1.0 -0.5 0.0 0.5 1.0 -12 -9 -6 -3 0 3 6 9 12 v cc =12v pv cc1 =pv cc2 =5v v bias =2.5v output voltage: v o (v) input voltage: v in (v) r l =20 ? r l =12 ? r l =8 ? -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 -4 -2 0 2 4 v cc =12v pv cc1 =pv cc2 =5v v bias =2.5v output voltage: v o (v) input voltage: v in (v) r l =4 ? r l =8 ? r l =12 ? r l =20 ? 012345 0 1 2 3 4 5 v cc =5v op amp input voltage: op in (v) op amp output voltage: op out (v) typical performance characteristics + - op in op out v
9 bcd semiconductor manufacturing limited apr. 2005 rev. 1. 1 4-channel btl motor driver for cd-rom/dvd AZ5954 data sheet figure 9. op amp phase-frequency, amplitude- frequency characteristics typical performance ch aracteristics (continued) 10k 100k 1m 10m -20 0 20 40 60 10k 100k 1m 10m -180 -90 0 90 180 phase: (deg) frequency: f (hz) v cc =12v pv cc =5v gain: g (db) g 2.5v 10 v in 10k 20k 100
4-channel btl motor driver for cd-rom/dvd AZ5954 10 data sheet apr. 2005 rev. 1. 1 bcd semiconductor manufacturing limited figure 10. typical application of AZ5954 in dvd player typical application 28 25 22 23 24 26 27 15 16 17 18 19 20 21 1 4 7 6 5 3 2 14 13 12 11 10 9 8 12v 5v or 12v sled motor r d focus coil tracking coil r d loading motor 5v or 12v standby loading dsp -com sled focus tracking vcenter AZ5954 m m
11 bcd semiconductor manufacturing limited apr. 2005 rev. 1. 1 4-channel btl motor driver for cd-rom/dvd AZ5954 data sheet application information 1. this ic has a built-in thermal shutdown circuit that mutes the output cu rrent when the chip tem- perature reached 178 o c (typ.). the hysteresis is set to 25 o c (typ.), so the driv er circuits start up again when the chip te mperature falls to 153 o c (typ.). 2. the driver buffer is switched off when the supply voltage falls below 3.5v (typ.), and is switched back on when the voltage reaches 3.7v (typ.) again. 3. in case standby pin voltage under 0.5v or opened, quiescent current is muted. standby pin voltage should be over 2.0v for normal applica- tion. 4. bias pin (pin 27) should be pulled up more than 1.2v. in case bias pin voltage is pulled down under 0.9v (typ.), output current is muted. 5. insert the by-pass capacitor (approximately 0.1 f) between v cc -pin and gnd-pin as near as possible to this ic. 6. heat dissipation fins ar e attached to the gnd on the inside of the package. make sure to connect these to external gnd. supplement: (current-feedback driver) the transmission gain (output current/input voltage) is given by: gm = 1 / (r d + r wire ) (a/v) r wire is the total gold wire resistance inside the package (0.15 ? 0.05 ? ) (typ.).
4-channel btl motor driver for cd-rom/dvd AZ5954 12 data sheet apr. 2005 rev. 1. 1 bcd semiconductor manufacturing limited mechanical dimensions hsop-28 17.890(0.704) 0.204(0.008) 0 o ~ 8 o 18.190(0.716) 0.360(0.014) 0.400(0.016) 1.270(0.050) 10.000(0.394) 10.650(0.419) 7.400(0.291) 7.600(0.300) 0.230(0.009) 0.470(0.019) 0.100(0.004) 0.300(0.012) 2.280(0.090) 2.630(0.104) 2.180(0.086) 2.330(0.092) 0.800(0.031) typ 5.050(0.199) 5.250(0.207) unit: mm(inch)
8f, b zone, 900 yi shan road, shanghai 200233, prc tel: +86-21-6495 9539, fax: +86-21- 6485 9673 bcd semiconductor (tai wan) company limited room 2210, 22nd fl, 333, keelung road, sec. 1, taipei (110), taiwan tel: +886-2-2758 6828, fax: +886-2-2758 689 2 important notice bcd semiconductor manufacturing limited reserves the right to make changes without further notice to any pro- ducts or specifications herein. bcd se miconductor manufacturing limited does not assume any responsibility for use of any its products for any particular purpose, nor does bcd semiconductor manufacturing limited assume any liability arising out of the application or use of any its products or circuits. bcd semiconductor manufacturing limi- ted does not convey any license under its patent rights or other rights nor the rights of others. http://www.bcdsemi.com bcd semiconductor corporation 3170 de la cruz blvd, suite # 105 santa clara, ca 95054-2411, u.s.a tel: +1-408-988 6388, fax: +1-408-988 63 86 shanghai sim-bcd semiconduc tor manufacturing co., ltd. 800 yi shan road, shanghai 200233, prc tel: +86-21-6485-1491, fax : +86-21-5450-0008 advanced analog circuits (shanghai) corporation

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