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ksd-i7a001-002 1 sept., 2010 rev. 02 4ch btl motor drive ic S3045 marking detail information device code year & week code product marking package S3045 S3045 ssoph-28n description the S3045 is a four-channels btl motor driver for driving the actuators and motors for products of dvd-p/r/rw. it embrace a two channels of current feed-back btl drivers. those use current feed-back process to minimize the current phase shift from the load inductance of actuators it supports various applications with pb free and heat-sink package. application ? cd-rom ? cd-rw ? dvd-player ? dvd-rom ? dvd-rw features and benefits ? 2 channel are current feedback motor driver for actuators ? 2 channels are voltage-type btl drivers for sled and loading motors. ? separating power of svcc and pvcc1,pvcc2 are to improve power efficiency. ? built in level shift circuit. ? built in thermal shut down circuit. ? built in standby mode. ? dual actuator drivers [ current feedback ] the current feedback technique can reduce the current phase shift caused by the load inductance of actuators ? sled motor driver a general op-amp connected to the input terminal helps compute additions of diff erential inputs or signals. ? loading motor driver single input linear btl driver. the output structure are two power op-amps in bridge configuration. s s e e m m i i c c o o n n d d u u c c t t o o r r http:// www.auk.co.kr ordering information s s s s o o p p h h - - 2 2 8 8 n n with heat-sink S3045( ) yyww( )
ksd-i7a001-002 2 sept., 2010 rev. 02 ? internal block diagram & pin assignment } v m j r } v m j t 1 4 1 3 } v { r r } v { r t 1 6 1 5 } v z s r } v z s t w n u k w } j j x z } j j } u m m j } v z s } p u z s t 1 2 1 1 1 0 9 8 7 6 5 } p u z s r j m j ? ? ? y j m j ? ? ? x } p u m j 4 3 2 1 2 4 } v s k r } v s k t w n u k } u m { r w } j j y z n u k } p u s k j { r ? ? ? y 2 3 2 2 2 1 2 0 1 9 1 8 1 7 j { r ? ? ? x } p u { r i p h z z { i ? 2 8 2 7 2 6 2 5 + - + - 10k 20k 7.5k + - 2 7.5k 10k 25k + - sled driver svcc svcc pvcc1 loading driver pvcc2 pvcc1 - + thermal shut down stand- by 20k 10k - + 7.5k 7.5k 2 - + 15k 10k actuator driver actuator driver S3045
ksd-i7a001-002 3 sept., 2010 rev. 02 no symbol i/o description 1 vinfc i input for focus driver 2 cfcerr1 i connect with capacitor for error amplifier. 3 cfcerr2 i connect with capacitor for error amplifier. 4 vinsl+ i op amp input (+) for the sled driver 5 vinsl- i op amp input (-) for the sled driver 6 vosl o op amp output for the sled driver 7 vnffc - focus driver feedback pin 8 sv cc pwr supply voltage for pre-driver block and power block of sled 9 pvcc1 pwr supply voltage for power block of loading 10 pgnd - gnd for power block 11 vosl- o sled driver output (-) 12 vosl+ o sled driver output (+) 13 vofc- o focus driver output (-) 14 vofc+ o focus driver output (+) 15 votk+ o tracking driver output (+) 16 votk- o tracking driver output (-) 17 vold+ o loading driver output (+) 18 vold- o loading driver output (-) 19 pgnd - gnd for power block 20 vnftk i feedback for tracking driver 21 pvcc2 pwr supply voltage for power block of actuator 22 sgnd - gnd for pre-driver block 23 vinld i input for loading driver 24 ctkerr2 i connect with capacitor for error amplifier. 25 ctkerr1 i connect with capacitor for error amplifier. 26 vintk i input for tracking driver 27 bias i input for reference voltage 28 stby i input for standby control symbol of + and ? [ output of drives ] m eans polarity to input pin. for example : if voltage leve l of pin1 is high, pin14 is high ? pin description S3045
ksd-i7a001-002 4 sept., 2010 rev. 02 parameter symbol limits unit supply voltage sv cc /pv cc 15 v power dissipation p d 1.7 w operate temperature range t opr -35 ~ +85 storage temperature range t stg -55 ~ +150 [ note ] 1) when mount ed on a 50mm50mm1mm pcb 2) power dissipation reduces 20mw/ for using above t a =25 3) do not exceed pd and soa parameter symbol limits unit sv cc 4.5 ~ 13.2 v power supply voltage pv cc1 / pv cc2 4.5 ~ sv cc v ? absolute maximum ratings ( ta = 25 ) ? guaranteed operating conditions ( ta = 25 ) ? 50mm50mm1mm pcb ? power dissipation reduces 20mw/ for using above t a =25 ? power dissipation curve [ pd ] S3045
ksd-i7a001-002 5 sept., 2010 rev. 02 ( unless otherwise specified ta=25 , svcc=12v, pvcc1= pvcc2=5v, bias=2.5v, r l1 =r l2 =r l3 =r l4 =12 ? , r d =0.5 , c fc =c tk =100pf) specification no characteristics symbol condition min. typ. max. unit 1 quiescent current i qc - 15 27 ma 2 standby circuit current i st - - 0.5 ma 3 standby on voltage v ston 0 - 0.5 v 4 standby off voltage v stoff 2.0 - - v < actuator driver: focus, tracking > 5 output offset current i oo -15 - 15 ma 6 maximum output voltage v om 3.6 4 - v 7 transmission gain gm vin=bias+0.1vpp ac @1khz 1.3 1.5 1.7 db < sled motor driver / pre op amp > 8 op amp input common mode voltage range v icm -0.3 - 11.0 v 9 op amp input bias current i bop 30 300 na 10 op amp low saturation voltage v olop - 0.1 0.3 v 11 maximum output source current i so 0.3 0.5 - ma 12 maximum output sink current i si 1 - - ma < sled motor driver > 13 output offset voltage v oofsl sv cc =5v -100 - 100 mv 14 maximum output voltage v omsl 7.5 9.0 - v 15 closed-loop voltage gain g vsl vin=bias+0.1vpp ac @1khz 18.0 20.0 22.0 db < loading motor driver> 16 output offset voltage v oofld -50 0 50 mv 17 maximum output voltage v omld 3.6 4.0 - v 18 closed-loop voltage gain g vld vin=bias+0.1vpp ac @1khz 13.5 15.5 17.5 db 19 gain error by polarity g vld vin=bias+0.1vpp ac @1khz 0 1 2 db ? electrical characteristics S3045
ksd-i7a001-002 6 sept., 2010 rev. 02 equivalent circuits ? signal input stage ? op-amp input stage bias vinfc vintk vinld 10k vinsl+ vinsl- ? sense amp input stage 10k 20k vnffc vnftk ? error amp input stage 7.5k 7.5k cfcerr1 ctkerr1 svcc ? bias input stage 20k 80k bias power amp off ? stand-by input stage 50k 50k stand-by all off S3045
ksd-i7a001-002 7 sept., 2010 rev. 02 application information 1. thermal shut down circuit the built-in thermal shutdown circuit mutes turn of f the output current when the chip temperature reaches 175 (typ.). the hysteresis is set to 25 (typ.) by ihys, so the circuit will start up again when the chip temperature falling down to 150 (typ.) 2. reference input & stand-by function ?reference input [ bias pin : pin 27 ] the applied voltage at the referen ce input pin must be between 0.8v and 6.5v ( when svcc=8.5v ) ?standby input [ pin28 ] the following input conditions mu st be satisfied for the standby function stand-by input voltage operation below 0.5v [ or open ] the stand-by function is activated so the bias block and power block are disabled above 2.0v recover the normal operation bandgap voltage [ 1.25v ] actuators, sled and loading motor r1 r2 r3 r4 ihys S3045
ksd-i7a001-002 8 sept., 2010 rev. 02 3. separation of power supply sv cc sv cc supplies power to the sled motor dr iver and the signa l logic part ( sv cc pv cc1 /pv cc2 ) pv cc1 pv cc1 is the power supply for the loading motor driver. the recommend operating voltage range is between 4.3v~13.2v pv cc2 pv cc2 is the power supply for the actuators th at include focus and tracking motor drivers the range is between 4.3v~13.2v 4. current feedback channel [ actuators ] ? the reference voltage is supplied externally through pin 27. ? the input op-amp output signal is amplifie d by (20k/10k) times and then fed to the current feedback amplifier. ? the current feedback amplifier compares the output current sensed input and command input and then makes the controlled output to eliminate delay effect of the load. ? the dc gain of current feedback amplifie r and power amplifier is unity, which is 1 [a/v]. users can change the gain by addi ng external resistor at the command input. current feedback amp 2 power amp ref vin actuator sensing resistor external r c 10k 20k 7.5k 7.5k + + - - + - + - S3045
ksd-i7a001-002 9 sept., 2010 rev. 02 5. sled driver circuits [ with input op amp ] ? the reference voltage is given externally through pin 27. ? the input op-amp can be used for several purpos e, for example low pass filter, differential input coordinator, gain scaler and so on. 6. loading driver circuits [ btl motor driver ] ? the reference voltage is given externally through pin 27. ? the input op-amp output signal is amplified by (15k/10k) times and then fed to the power amplifier. the gain of power amplifier is 4; therefore, the total max gain of loading driver is 6. ? users must check input command range to us e max output voltage because the total gain is relatively smaller than other drivers. m power amp 10k 25k + - + - ref m power amp 10k 15k ref + - + - + - + - + - S3045
ksd-i7a001-002 10 sept., 2010 rev. 02 ` characteristic diagrams ( ) - + v
fig.4 v om - i o 2 fig. 3 v om - i o 1 fig. 1 v cc - i qc fig. 2 temperature - i qc fig.6 op v in ? op v o (buffer) fig. 5 v om - i o 3 S3045
ksd-i7a001-002 11 sept., 2010 rev. 02 ? application circuit sv cc pv cc1 S3045 pv cc2 S3045
ksd-i7a001-002 12 sept., 2010 rev. 02 ? testing circuit 12 3 4 567 8 9 10 11 12 13 14 S3045 vofc+ vofc- vosl+ vosl- v a + - 100pf v in3 v in1 vop r l3 v o3 r l1 i o1 v o1 28 24 23 22 27 26 25 vold+ + 17 vold- - 19 18 21 20 votk+ votk- + - a + - 16 15 r d 100uh v bias v st v in2 100pf v in4 sv cc 100uf i cc pv cc1 i o2 r l2 r d 100uh v o2 r l4 v o4 100uf pv cc2 S3045
ksd-i7a001-002 13 sept., 2010 rev. 02 S3045 ? outline dimension (unit : mm) s s s s o o p p h h - - 2 2 8 8 n n with heat-sink recommend pcb solder land (unit : mm)
ksd-i7a001-002 14 sept., 2010 rev. 02 the auk corp. products are intended for the use as components in general electronic equipment (office and co mmunication equipment, m easuring equipment, home appliance, etc.). please make sure that you consult with us before you use these auk corp. products in equipments which require high quality and / or reliability, and in equipments which could have major impact to th e welfare of human life(atomi c energy control, airplane, spaceship, transportation, co mbustion control, all types of safety device, etc.). auk corp. cannot accept liability to any damage which may occur in case these auk corp. products were used in the mentioned equi pments without prior consultation with auk corp.. specifications mentioned in this publicati on are subject to change without notice. S3045

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