U 4 t .c AM5868S Motor Driver ICs om 5-channel e BTL Driver for DVD player e h AM5868S S a t a The AM5868S D is a five-channel BTL driver IC for driving the motors and actuators such as used in DVD player and . consistsw of two independent precision voltage comparators. It supports a variety of applications. w w Applications BTL driver for CD, CD-ROM and DVD. Features 1) Two comparators built-in: Two general-purpose voltage open collector output comparators are built-in. 2) Two channels are voltage-type BTL drivers for actuators of tracking and focus. Two channels are voltage-type BTL driver for sled and spindle motors. It is also built-in one channel bi-direction DC motor driver for tray. 3) Wide dynamic range [9.0V (typ.) when Vcc1= Vcc2= 12V, at RL= 20Ω load]. t a S a w w AMtek semiconductors w .D 8) Dual actuator drivers: A general purpose input OP provides differential input for signal addition. The output structure is two power OPAMPS in bridge configuration. 9) Sled motor driver: A general purpose input OP provides differential input for signal addition. The output structure is one power OPAMP in bridge configuration. 10) Spindle driver: Single input linear BTL driver. The output structure are two power OPAMPS in bridge configuration. 11) Tray in-out driver: The DC motor driver supports forward/reverse control for tray motor. e h 4) Separating power of Vcc1 and Vcc2 is to improve power efficiency by a low supply voltage for tracking, focus, and spindle. 5) Level shift circuit built-in. 6) Thermal shut down circuit built-in. 7) Mute mode built-in. -1- U 4 .c m o t e w w w .D at h S a t e e 4U . m o c Oct 2003 V1.0 AM5868S Motor Driver ICs Absolute maximum ratings (Ta=25°C) Parameter Symbol Vcc1 Vcc2 Pd Topr Tstg Supply voltage Limits Unit 13.5 V Power dissipation *1.7 -35 ~ +85 Operate Temp range **-55 ~ +150 Storage Temp range *When mounted on a 70mm × 70mm × 1.6mm glass epoxy board. *Reduced by 13.6mW for each increase in Ta of 1℃ over 25℃. **Should not exceed Pd or ASO and Tj=150 ° C values W ℃ ℃ Guaranteed operating conditions (Ta=25°C) Parameter Symbol Limits Unit Power supply voltage Vcc1 Vcc2 4.3 ~ 13.2 4.3 ~ Vcc1 V V Block diagram MUTE BIAS VINTK OP1IN+ OP1IN- VINLD 28 27 26 25 24 23 GND VCTL OP1OUT VCC2 VOLD- VOLD+ VOTK- VOTK+ 22 21 20 19 18 17 16 15 GND 10K PGND Vcc2 + MUTE 15K 10K Spindle Driver(4X) + - + 25K Thermal Shut down Actuator Driver(6x) Vcc2 Vcc2 + Vcc1 + - 25K - Sled Driver(4X) 25K 10K Pre-DRV - 1 Vcc1 TRAY DRIVER + 10K VINFC PGND Actuator Driver(6x) 2 3 OP2IN- OP2IN+ AMtek semiconductors 4 5 VINSL+ OP2OUT 6 FWD 7 REV -2- 8 9 VCC1 VOTR- 10 VOTR+ 11 12 13 14 VOSL+ VOSL- VOFC- VOFC+ Oct 2003 V1.0 AM5868S Motor Driver ICs Electrical characteristics ( Unless otherwise specified Ta=25℃, Vcc1=12V, Vcc2=5V, BIAS=2.5V, RL=8Ω/10Ω/20Ω/45Ω) Icc Vston Vstoff Min 0 2.0 Limit Typ 30 - Max 0.5 5 Voo Vom Gv 3.6 - 4.0 23.5 ± 50 - mV V dB @10ΩLoad VIN=BIAS+0.2Vpp ac @1KHz Voofsl Vomsl Gvsl 7.5 18 9.0 20 ± 1 00 22 mV V dB @20Ω Load VIN=BIAS+0.2Vpp ac @1KHz Voofld Vomax Gvld ΔGvld 13.3 0 3.5 15.5 1 ± 50 17.5 2 mV V dB dB @8Ω Load VIN=BIAS+0.2Vpp ac @1KHz VIN=BIAS+0.2Vpp ac @1KHz VSAT1 0.7 1.1 1.5 V △VSAT1 - - 0.1 V VSAT2 1.0 1.55 2.2 V VVtrH 7.4 9.2 11 dB VCTL=2V VIH VIL IIH 1.5 -0.3 - 180 Vcc 0.5 270 V V µA VFWD=VREV=5V Voofc - ±1.0 VCMC 0 - Gvc IOSC VSC 50 - 200 6.0 250 ±2.0 mV Vcc1 V -1.5 V/mV RL≧15kΩ mA Vout < 1.5V 400 mV IOSC≦4mA Parameter Symbol Quiescent current Voltage for mute ON Voltage for mute OFF <Actuator drivers> Output offset voltage Maximum output voltage Voltage gain Unit Conditions P.S mA V V <Sled motor driver> Output offset voltage Maximum output voltage Closed loop voltage gain <Spindle motor driver> Output offset voltage Maximum output voltage Voltage gain Gain error by polarity <Tray motor driver> Output saturation voltage 1 Output saturation voltage between F&R Output saturation voltage 2 Output adjustable gain on “H” side voltage Upper + Lower saturation, IL=200mA Output saturation voltage 1 between FWD and REV Upper + Lower saturation, IL=500mA <Tray motor driver input logic> High level input voltage Low level input voltage High level input current <Comparator> Input offset voltage Input common-mode voltage range Voltage gain Output sink current Saturation voltage *This device is not designed for protection against radioactive rays. AMtek semiconductors -3- Oct 2003 V1.0 AM5868S Motor Driver ICs Pin configuration 1 28 MUTE OP2IN- 2 27 BIAS OP2IN+ 3 26 VINTK VINSL+ 4 25 OP1IN+ OP2OUT 5 24 OP1IN- FWD 6 23 VINLD REV 7 22 GND Vcc1 8 21 VCTL VOTR- 9 20 OP1OUT VOTR+ 10 19 Vcc2 VOSL+ 11 18 VOLD- VOSL- 12 17 VOLD+ VOFC- 13 16 VOTK- VOFC+ 14 15 VOTK+ AMtek semiconductors AM5868S VINFC -4- Oct 2003 V1.0 AM5868S Motor Driver ICs Pin description PIN No Pin Name Function 1 VINFC Input for focus driver 2 OP2IN- Comparator 2 input (-) 3 OP2IN+ Comparator 2 input (+) 4 VINSL+ Input for the sled driver 5 OP2OUT Comparator 2 output 6 FWD Tray driver forward input 7 REV Tray driver reverse input 8 Vcc1 Vcc for pre-drive block and power block of sled and tray 9 VOTR- Tray driver output (-) 10 VOTR+ Tray driver output (+) 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+ Spindle driver output (+) 18 VOLD- Spindle driver output (-) 19 Vcc2 20 OP1OUT 21 VCTL Speed control input of tray driver 22 GND Ground 23 VINLD Input for spindle driver 24 OP1IN- Comparator 1 input (-) 25 OP1IN+ Comparator 1 input (+) 26 VINTK Input for tracking driver 27 BIAS Input for reference voltage 28 MUTE Input for mute control Vcc for power block of spindle, tracking and focus Comparator 1 output Notes) Symbol of + and – (output of drivers) means polarity to input pin. (For example, if voltage of pin1 is high, pin14 is high.) AMtek semiconductors -5- Oct 2003 V1.0 AM5868S Motor Driver ICs Power dissipation curve : Pd (W) 2.0 1.5 1.0 25 50 75 100 125 150 Ta(℃) *70mm × 70mm×1.6mm glass epoxy board. *Derating is done at 13.6mW/℃ for operating above Ta=25℃ Operation notes 1) The built-in thermal shutdown circuit mutes the output current when the chip temperature reaches 175℃ (typ.). The hysteresis is set to 25℃ (typ.), so the circuit will start up again when the chip temperature falling to 150℃ (typ.). 2) In case mute pin voltage is under 0.5V or NC, output current is muted (except for tray motor driver). Mute pin voltage should be more than 2.0V for normal application. 3) Bias pin (pin 27) should be pulled up to more than 1.2V. In case the bias pin voltage is pulled down below 0.9V (typ.), the output current is muted. 4) Insert the bypass capacitor (~ 0.1uF ) between Vcc pin and GND pin as close as possible. 5) Heat dissipation fins are attached to the GND on the inside of the package. Make sure to connect them to the external GND. AMtek semiconductors -6- Oct 2003 V1.0 AM5868S Motor Driver ICs 6) Tray driver logic input: FWD (pin6) REV (pin7) VOTR+ (pin10) VOTR- (pin9) Function L L OPEN OPEN Open mode L H L H Reverse mode H L H L Forward mode H H L L Brake mode Input circuit of pin6 and pin7 is designed to avoid simultaneous activation of upper and lower output tr. ; however, in order to improve reliability, apply motor forward/reverse input once through open mode. We recommend time period for open longer than 10msec. “H” side Output voltage on output voltage (VOL+, VOL-) varies depending on output control terminal for tray (pin21). “H” side output voltage is set three times (9.2dB Typ.) VTCL(pin21). And, “L” side output voltage is equal to output saturation voltage. Application circuit SERVO Spindle Tray voltage control FWD MUTE U-COM SPIN- SPIN+ REV Vcenter Tracking Sled Focus SERVO 28 27 26 25 24 23 22 21 19 17 16 15 Vcc2 15K + MUTE 18 PGND GND 10K 20 Tracking coil M 5v or 12V 10K Spindle Driver(4X) - - + + 25K Thermal Shut down Actuator Driver(6x) Vcc2 Vcc2 + Vcc1 + 25K - 25K 10K Pre-DRV - 4 5 6 7 8 12V SERVO 3 SPIN- 2 SPIN+ AMtek semiconductors Actuator Driver(6x) 11 13 TRAY DRIVER + 10K 1 PGND Vcc1 Sled Driver(4X) -7- 9 10 M 12 M 14 Focus coil Oct 2003 V1.0 AM5868S Motor Driver ICs Testing circuit V20 V28 V27 V25 V26 V24 V23 8 V19 V 10 OPEN 28 27 26 25 24 23 22 GND 10K 21 20 19 17 16 15 PGND Vcc2 15K + MUTE 18 10K Spindle Driver(4X) + - + 25K Thermal Shut down Actuator Driver(6x) Vcc2 Vcc2 + Vcc1 + - 25K - 25K 10K Pre-DRV - PGND Vcc1 Sled Driver(4X) Actuator Driver(6x) 11 13 TRAY DRIVER + 10K 1 2 3 4 V1 V2 V3 V4 5 6 7 8 V6 V7 V8 9 10 12 14 V 45 8 10 V5 AMtek semiconductors -8- Oct 2003 V1.0 AM5868S Motor Driver ICs Packaging outline HSOP28 D 28 15 E 1 H 14 B e b1 A1 0.089 C 12 A" - A" b1 A" - A" c A c1 a b 12 SYMBOL A A1 a B b b1 c c1 D E e H AMtek semiconductors MILLIMETERS Min. Max. 2.31 2.20 0.05 0.20 5.05 5.25 0.30 0.45 0.30 0.40 0.23 0.30 0.23 0.28 18.41 18.67 7.49 7.75 0.80 BSC 9.62 10.02 -9- INCHES Min. Max. 0.091 0.087 0.002 0.008 0.199 0.207 0.012 0.018 0.012 0.016 0.009 0.012 0.009 0.011 0.725 0.735 0.295 0.305 0.031 BSC 0.379 0.394 Oct 2003 V1.0 AM5868S Motor Driver ICs Marking Identification AMtek Row I Row II Row III Row IV Row I AMtek Row II Part number Row III Lot number Row IV Production week Week number Year AMtek semiconductors - 10 - Oct 2003 V1.0