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data sheet 4-channel motor driver for dvd player am5954a 1 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited general description the am5954a is a four-channel btl driver ic for driving the motors and actuators in products for dvd- player drivers. two of the channels use current feed- back to minimize the curren t phase shift caused by the influence of load inductance. this ic is an improved version of az5954. the am5954a is available in hsop-28 package. features level shift circuit on chip internal standby mode built-in thermal shutdown circuit applications dvd player hsop-28 figure 1. package type of am5954a
data sheet 4-channel motor driver for dvd player am5954a 2 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited pin configuration m28 package hsop-28
figure 2. pin configuration of am5954a (top view) 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+ fin (gnd) fin (gnd) 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
data sheet 3 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited 4-channel motor driver for dvd player am5954a pin number pin name function 1 v in fc 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 for loading channel 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 output 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)
data sheet 4-channel motor driver for dvd player am5954a 4 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited figure 3. functional block diagram of am5954a 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
data sheet 5 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited 4-channel motor driver for dvd player am5954a package temperature range part number marking id packing type tin lead lead free tin lead lead free hsop-28 0 to 70 o c am5954am28 am5954am28-e1 am5954am28 am5954am28-e1 tube AM5954AM28TR-E1 am5954am28-e1 tape & reel parameter symbol value unit supply voltage v cc , pv cc1/2 13.5 v power dissipation p d 1.7 (note 3) w operating junction temperature t j 150 o c storage temperature range t stg -55 to 150 o c esd (human body model) esd 2000 v esd (machine model) esd 200 v 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 am5954a - tr: tape and reel blank: tube
data sheet 4-channel motor driver for dvd player am5954a 6 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited parameter symbol test conditions min typ max unit quiescent current qc 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 3.8 v transmission gain gm v in =v bias 0.2v 1.3 1.5 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 v cc =5v -100 100 mv maximum output voltage v omsl v in =v bias 1.5v 7.5 9 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 -50 50 mv maximum output voltage v omld v in =v bias 2.0v 7.5 9 v v in =v bias 1.5 v v cc =pv cc1 =5v 3.6 3.8 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 =pv cc =12v, 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
data sheet 7 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited 4-channel motor driver for dvd player am5954a figure 4. test circuit of am5954a 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+ am5954a
data sheet 4-channel motor driver for dvd player am5954a 8 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited figure 7. driver i/o characteristics (loading, note 4) figure 8. op amp i/o characteristics (note 4) figure 5. driver i/o characteristics figure 6. driver i/o characteristics (sled, note 4) 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 -1.0 -0.5 0.0 0.5 1.0 -4 -3 -2 -1 0 1 2 3 4 v cc =pv cc =5v 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 ? + - op in op out v -1.2 -0.8 -0.4 0.0 0.4 0.8 1.2 -12 -8 -4 0 4 8 12 r l =20 ? r l =12 ? r l =8 ? output voltage: v o (v) input voltage: v in (v) v cc =pv cc1 =12v pv cc2 =5v bias=2.5v -0.4 -0.2 0.0 0.2 0.4 -5 -4 -3 -2 -1 0 1 2 3 4 5 output voltage: v o (v) input voltage: v in (v) v cc =pv cc1 =12v pv cc2 =5v bias=2.5v r l =4 ? +100 h r l =8 ? +100 h r l =12 ? +100 h r l =20 ? +100 h (focus and tracking, note 4) note 4: input voltage herein is referenced to bias pin voltage.
data sheet 9 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited 4-channel motor driver for dvd player am5954a figure 9. op amp phase-frequency, amplitude- frequency characteristics typical performance ch aracteristics (continued) figure 10. power dissipation curve 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 0 50 100 150 0.0 0.4 0.8 1.2 1.6 2.0 power dissipation (w) ambient temperature ( o c)
data sheet 4-channel motor driver for dvd player am5954a 10 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited figure 11. typical application of am5954a 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 5v or 12v 5v or 12v sled motor r d focus coil tracking coil r d loading motor 5v standby loading dsp -com sled focus tracking vcenter am5954a m m
data sheet 11 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited 4-channel motor driver for dvd player am5954a application information 1. this ic has a built-in thermal shutdown circuit that mutes the output cu rrent when the chip tem- perature reachs 178 o c (typ). the hysteresis is set to 25 o c (typ), so the driver circuits start up again when the chip temperature 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 volta ge reaches 3.7v (typ) again. 3. in case standby pin voltage is 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 are attached to the gnd inside the package. make sure to connect them to the 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).
data sheet 4-channel motor driver for dvd player am5954a 12 mar. 2007 rev. 1. 4 bcd semiconductor manufacturing limited hsop-28 mechanical dimensions unit: mm(inch) 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)
important notice bcd semiconductor manufacturing limited reserves the right to make changes without further not ice to any products or specifi- cations herein. bcd semiconductor manufacturing limited does not as sume any responsibility for us e of any its products for any particular purpose, nor does bcd semiconductor manufacturi ng limited assume any liability aris ing out of the application or use of any its products or circui ts. bcd semiconductor manufacturing limited does not convey any license under its patent rights or other rights nor the rights of others. - wafer fab shanghai sim-bcd semiconductor manufacturing limited 800, yi shan road, shanghai 200233, china tel: +86-21-6485 1491, fax: +86-21-5450 0008 bcd semiconductor manufacturing limited main site regional sales office shenzhen office shanghai sim-bcd semiconductor manuf acturing co., ltd. shenzhen office advanced analog circuits (shanghai) corporation shenzhen office room e, 5f, noble center, no.1006, 3rd fuzhong road, futian district, shenzhen 518026, china tel: +86-755-8826 7951 fax: +86-755-8826 7865 taiwan office bcd semiconductor (taiwan) company limited 4f, 298-1, rui guang road, nei-hu district, taipei, taiwan tel: +886-2-2656 2808 fax: +886-2-2656 2806 usa office bcd semiconductor corporation 30920 huntwood ave. hayward, ca 94544, u.s.a tel : +1-510-324-2988 fax: +1-510-324-2788 - ic design group advanced analog circuits (shanghai) corporation 8f, zone b, 900, yi shan road, shanghai 200233, china tel: +86-21-6495 9539, fax: +86-21-6485 9673 bcd semiconductor manufacturing limited http://www.bcdsemi.com

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