1/11 STRUCTURE PRODUCT SERIES TYPE PACKAGE OUTLINES POWER DISSIPATION BLOCK DIAGRAM APPLICATION TEST CIRCUIT : : : : : : : : Silicon Monolithic Integrated Circuit Power driver for CD/DVD player BA5956FM Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 ◎ Features ○ 2 channel current feedback type driver, 3 channel BTL driver. ○ Employs the HSOP-M36 power package for compaction. ○ Has a wide dynamic range. ○ The thermal shutdown circuit is built. ○ Mute circuit is built in. ( except for loading driver ) ○ A power supply is divided into 4 systems. 【PreVcc, PowVcc1=actuator, PowVcc2=loading motor, PowVcc3=sled motor, spindle motor】 ◎Absolute Maximum Rating (Ta=25℃) Item Supply voltage Power dissipation Maximum output current Operating temperature range Storage temperature range Symbol PreVcc,PowVcc Pd Iomax Topr Tstg Rating 18 2.2*1 1*2 -35～85 -55～150 Unit Ｖ Ｗ Ａ ℃ ℃ *1 Rating for 70 ㎜×70 ㎜(size), 1.6 ㎜(thickness), copper foil occupation ratio less than 3％, And use of glass-epoxy substrate. When this IC is used above Ta=25℃, note that this rating decreases 17.6mW each time the temperature increases 1℃. *2 This rating of permissible dissipation must not exceed ASO. ◎Operating Supply Range PreVcc 4.5 ～ 14 （Ｖ） PowVcc 4.5 ～ PreVcc（Ｖ） REV. B 2/11 ● ELECTRICAL CHARACTERISTICS （Unless otherwise noted, Ta=25℃, PreVcc=PowVcc3=12V, PowVcc1=PowVcc2=5V, BIAS=1.65V, RL=8Ω, Rd=0.5Ω,C=100pF） Parameter symbol MIN TYP MAX Unit IQ － Figure.5 VMON V Figure.5 Voltage for mute OFF VMOFF 0 2.0 44 0.5 － mA Voltage for mute ON 34 － － V Figure.5 -6 3.6 1.5 0 4.0 1.8 6 － mA Figure.5 2.1 A/V 0.4 -6 － 0 － 10.5 6 300 0.5 － － V Figure.5 mV Figure.5 nA Figure.5 V Figure.5 mA Figure.5 mA Figure.5 Quiescent current Condition Test circuit < Actuator driver > Output offset current IOOF Maximum output voltage VOM Trans conductance Gvc V VIN=±1.65V Figure.5 VIN=BIAS±0.2V Figure.5 < Sled motor driver pre OPAMP & OPAMP> Common mode input range Input offset voltage Input bias current Low level output voltage VICM VIOFOP IBOP VOLOP Output source current ISO Output sink current ISI － － 0.5 0.5 0.2 － － -50 8.0 17.6 0 9.5 19.6 -50 3.5 15.7 0 4.0 17.7 -50 8.0 15.7 0 9.5 17.7 < Sled motor driver > Output offset voltage VOOFSL Maximum output voltage VOMSL Closed loop voltage gain GVSL 50 － mV V VIN=±1.65V Figure.5 21.6 dB VIN=±0.2V Figure.5 50 － mV V VIN=±1.65V Figure.5 19.7 dB VIN=BIAS±0.2V Figure.5 50 － mV V VIN=±1.65V Figure.5 19.7 dB VIN=BIAS±0.2V Figure.5 Figure.5 < Loading motor driver > Output offset voltage VOOFLD Maximum output voltage VOMLD Gain error by polarity GVLD Figure.5 < Spindle motor driver > Output offset voltage VOOFSP Maximum output voltage VOMS Gain error by polarity GVSP ○ This product is not designed for protection against radioactive rays. REV. B Figure.5 3/11 REV. B 4/11 Electrical characteristic curves Pd / W 3 2 1 0 0 25 50 75 100 125 150 AMBIENT TEMPERATURE, Ta /℃ Pd；Power Dissipation Rating for 70mm×70mm(size), 1.6mm(thickness), copper foil occupation ratio less than 3%, and use of glass-epoxy substrate. Figure 2 POWER DISSIPATION REV. B 5/11 36 35 34 33 32 31 30 29 28 27 PVcc3 26 25 PVcc2 PreVcc 24 23 22 21 20 19 PGND 10K Sled Driver Loading Driver 25K - + - + - + 10K Spindle Driver - + 10K Thermal shut down 20K PVcc2 15K PVcc3 - + PVcc1 + ×2 7.5K 20K + - Det. Amp. + 7.5K 10K ×2 MUTE 7.5K 20K + 10K 1 2 3 4 5 6 7.5K 7 8 PreGND PVcc1 10 11 9 Actuator Driver Actuator Driver 15 17 PGND 12 13 14 16 18 Unit of resistance: Figure 3 BLOCK DIAGRAM ● Pin description No No Pin name 1 2 3 4 5 6 7 LDBIAS BIAS FCIN CFCerr1 CFCerr2 MUTE TKIN Pin name Input for bias voltage (Loading driver) Input for bias: voltage Input for focus driver Connection with capacitor for error amplifier 1 Connection with capacitor for error amplifier 2 Input for mute control Input for tacking driver Pin description 19 20 21 22 23 24 25 VOLD (－) VOLD (+) VOSL (－) VOSL (+) VOSP (－) VOSP (+) PGND2 8 9 10 11 12 13 14 15 16 17 18 CTKerr1 CTKerr2 PreGND PVcc1 VNFFC PGND1 VNFTK VOTK(－) VOTK (+) VOFC(－) VOFC (+) Connection with capacitor for error amplifier 1 Connection with capacitor for error amplifier 2 GND for pre-drive block Vcc for power block of actuator Feedback for focus driver GND for power block of actuator Feedback for tracking driver Inverted output of tracking Non inverted output of tracking Inverted output of focus Non inverted output of focus 26 27 28 29 30 31 32 33 34 35 36 PVcc2 PVcc3 PreVcc SPIN OPOUTSL OPINSL(－) OPINSL (+) LDIN OPOUT OPIN(－) OPIN (+) notes) Symbol of + and ‐ (output of drivers) means polarity to input pin. (For example if voltage of pin3 is high , pin18 is high.) REV. B Pin descrition Inverted output of loading Non inverted output of loading Inverted output of sled Non inverted output of sled Inverted output of spindle Non inverted output of spindle GND for power block of loading, sled and spindle driver Vcc for power block of loading driver Vcc for power block of sled and spindle driver Vcc for pre-drive block Input for spindle driver Sled Pre OP amplifier output Sled Pre OP amplifier invert input Sled Pre OP amplifier non invert input Input for loading driver OP amplifier output OP amplifier invert input OP amplifier non invert input 1 36 -com Figure 4 APPLICATION REV. B 2 + - Thermal shut down 35 3 10K 20K + - 34 4 33 7.5K 7.5K 5 32 MUTE 6 31 + - 7 10K 20K + - 30 8 29 7.5K 7.5K 9 PreVcc 28 SERVO 10 10K 10K 10K 26 11 PVcc1 PVcc2 PreGND ×2 Det. Amp. ×2 PVcc3 27 - + Tracking 10k - + Focus 0.1m - + BIAS Sled Spindle MUTE Loading 3 state type - + 10k - + Power Supply for -com 12 15K 25K Spindle Driver 24 13 14 23 Rd 22 21 16 Tracking Coil 15 Actuator Driver Sled Driver M M PGND PGND 20K 25 Sled Motor Spindle Motor Rd 17 Focus Coil Actuator Driver 18 PVcc1 PVcc3 PVcc2 19 Loading Driver 20 M Loading Motor 6/11 Loading BIAS 7/11 8 OPAMP 34 OUT OUT 35 INM INM 36 32 31 30 VIN3 33 12V INP INP OPAMP 8 8 5V 12V VIN5 IQ 29 Vo5 28 27 PreVcc 26 25 PVcc3 PVcc2 PGND 10K 20K 10K 25K 10K 15K Thermal shut down 24 Vo4 23 Spindle Driver Vo3 21 22 20 Sled Driver 19 Loading Driver PVcc2 PVcc3 PVcc1 7.5K ×2 7.5K 20K 7.5K ×2 20K 10K MUTE 1 2 3 4 5 VIN1 Det. Amp. 7.5K PreGND 10K 7 6 8 9 11 Actuator Driver 15 17 PGND PVcc1 10 Actuator Driver 12 VIN2 13 14 16 0.5 Io Io 8 1.65V 1.65V 100pF 100pF MUTE 5V Vo1 100H 18 0.5 8 100H INP INM OUT VOOF VBOP 4 3 SW1 1M 2 2 1 1M VBOP 1 10k 10k SW3 1 1 BIAS SW2 2 2 SW4 VINOP IOP OPAMP Figure5 TEST CIRCUIT ● Measurement circuit switch table REV. B VOOP Vo2 8/11 Symbol Switch SW1 SW2 SW3 Input SW4 VIN1 IQ 1 1 2 1 1.65V VMON 1 1 2 1 1.65V VMOFF 1 1 2 1 1.65V <Actuator driver> IOOF 1 1 2 1 1.65V VOM ±1.65V 1 1 2 1 Gvc ±0.2V 1 1 2 1 <Sled motor driver pre OPAMP & OPAMP> IBOP 2 1 3 1 1.65V VIOFOP 1 1 2 1 1.65V VOLOP 1 2 1 1 1.65V ISO 1 1 2 2 1.65V ISI 1 1 2 2 1.65V <Sled motor driver> VOOFSL 1 1 2 1 1.65V VOMSL 1 2 1 1 1.65V GVSL 1 2 1 1 1.65V <Loading driver> VOOFLD 1 1 2 1 1.65V VOMLD 1 1 2 1 1.65V GVLD 1 1 2 1 1.65V <Spindle driver> VOOFSP 1 1 2 1 1.65V VOMS 1 1 2 1 1.65V GVSP 1 1 2 1 1.65V Condition VIN2 VIN3 VIN5 VINOP MUTE 1.65V 1.65V 1.65V － 2.0V 1.65V 1.65V 1.65V － 2.0V 1.65V 1.65V 1.65V － 0.5V IQ IQ IQ 1.65V 1.65V 1.65V － 2.0V ±1.65V 1.65V 1.65V － 2.0V VIN1,2=0, 3.3V ±0.2V 1.65V 1.65V － 2.0V VIN=1.45, 1.85V 1.65V 1.65V 1.65V － 2.0V 1.65V 1.65V 1.65V － 2.0V 1.65V 1.65V 1.65V 12V 2.0V 1.65V 1.65V 1.65V － 2.0V 1.65V 1.65V 1.65V － 2.0V 1.65V 1.65V 1.65V － 2.0V 1.65V 1.65V 1.65V ±1.65V 2.0V VINOP=0, 3.3V 1.65V 1.65V 1.65V ±0.2V 2.0V VINOP=1.45, 1.85V 1.65V 1.65V 1.65V － 2.0V ±1.65V 1.65V － 2.0V VIN3=0, 3.3V 1.65V ±0.2V 1.65V － 2.0V VIN3=1.45, 1.85V 1.65V 1.65V 1.65V － 2.0V 1.65V 1.65V ±1.65V － 2.0V VIN5=0, 3.3V 1.65V 1.65V ±0.2V － 2.0V VIN5=1.45, 1.85V REV. B IO VO1,2 IO VBOP VOOF VOOP VOOP VOOP 1.65V ● EQUIVALENT CIRCUIT OF TERMINALS Measureme nt point VO4 VO4 VO4 VO3 VO3 VO3 VO5 VO5 VO5 9/11 31,32 PIN Pre OP amplifier input for sled driver 10k OP amplifier output for sled driver （ & driver input ） 10k inverted output for focus and tracking driver 10k Driver input 10k REV. B VREF 10k 15,17 PIN 3,7,29,33 PIN 30 PIN OP amplifier output 34 PIN 2k 35,36 PIN OP amplifier input 2k 10/11 10k 75k Mute 7.5k Connection with capacitor for error amplifier 2 4,8 PIN REV. B 15k Connection with capacitor for error amplifier 1 ●Notes on use 5,9 PIN 7.5k 6 PIN 50k 20k Feedback for focus and tracking driver 12,14 PIN 25k Output for driver (-) 19,21,23PIN 50k 10k 1,2 PIN Bias input 10k (+) 16,18,20,22,24 PIN 10k 11/11 1. Thermal-shut- down circuit built-in. In case IC chip temperature rise to 175℃ (typ.) thermalshut-down circuit operates and output current is muted. Next time IC chip temperature falls below 150℃ (typ.) 2. In case mute-pin voltage under 0.5V or opened, quiescent current is muted. Mute-pin voltage should be over 2.0V for normal application. 3. In case supply voltage falls below 3.5V (typ.), output current is muted. Next time supply voltage rises to 3.7V(typ.), the driver blocks start. 4. Bias-pin (pin1 and pin2) should be pulled up more than 1.2V. In case bias-pin voltage is pulled down under 1.0V (typ.), output current is muted. 5. In case a capacitance load is connected to the OP amplifier output, the amplifier phase margin decreases, which causes the peak or oscillator. When connecting such load, insert a resistance in series between the output and the capacitance load and take a full consideration for frequency characteristics, to prevent problems during practical use. 6. Insert the by-pass capacitor between Vcc-pin and GND-pin of IC as possible as near (approximately 0.1F). 7. Heat dissipation fins are attached to the GND on the inside of the package. Make sure to connect these to the external GND 8. Avoid the short-circuits between: Output pin and Vcc Output pin and GND Output pins If this caution is ignored, IC damage may cause smokes. 9. Examine in consideration of operating margin, when each driver output falls below sub-voltage of IC (GND) due to counter-electromotive-force of load. < Supplement > Current feedback driver Trans conductance (output current/input voltage) is shown as follws. gm 1 Rd RWIRE ( A／V ) RWIRE: ≒0.075（±0.05） （Typ.）:Au wire REV. B Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. 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