Ordering number : ENN7189 LV8206T Bi-CMOS LSI CD and MD System Motor Driver Overview Package Dimensions The LV8206T is a motor driver system IC that integrates all the motor driver circuits required to implement CD and MD players. Since the LV8206T includes a 3-phase PWM spindle motor driver, a sled driver (3-phase stepping motor driver), and two PWM H-bridge motor driver circuits for the focus and tracking motors, it can contribute to miniaturization, thinner form factors, and lower power consumption in end products. Direct PWM sensorless drive is adopted in the spindle and sled drivers for high-efficiency motor drive with a minimal number of external components. unit: mm 3254-TQFP48 [LV8206T] Features • Direct PWM drive (low side control) • Three-phase full-wave sensorless drive (spindle block) • Reverse torque braking (spindle block) • Soft switching drive (spindle block) • MOS output transistors structure • Standby mode power saving functions • FG output SANYO: TQFP48 Any and all SANYO Semiconductor products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest you before using any SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor products described or contained herein. N2206 / N2503TN (OT) No. 7189 - 1/14 LV8206T Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum supply voltage VCC max 5.0 V Output block supply voltage Vs max 4.5 V Pre-drive voltage (Gate-voltage) VG max 6.5 V Output current 1.0 A Allowable power dissipation 1 Pd max1 Io max Independent IC 0.4 W Allowable power dissipation 2 Pd max2 * Specified circuit board: 114.3 × 76.1 × 1.6 mm3 Circuit board material: Glass epoxy 1.3 W Operating temperature Topr –20 to +85 °C Storage temperature Tstg –55 to +150 °C Recommended Operating Conditions at Ta = 25°C Parameter Symbol Conditions Ratings Unit Supply voltage VCC 1.9 to 4.0 V Output block supply voltage VS 0 to VG – 3.0 V Pre-drive voltage (Gate-voltage) VG VS + 3 to VS + 6.3 V Electrical Characteristics at Ta = 25°C, VCC = 2.4 V Parameter Symbol Conditions Power supply current 1 ICC1 S/S: H Power supply current 2 ICC2 S/S: L (Stand by) Ratings min Unit typ max 2.1 3.1 mA 20 µA 6.3 V [Charge Pump Output] Output voltage VG 5.5 6.0 Actuator Block at Ta = 25°C, VCC = 2.4 V Parameter Symbol Conditions Ratings min typ max Unit [Position Detection Comparator] Input offset voltage VAOFS –9 +9 mV Common phase input voltage range VACM 0 VCC V High-level output voltage VACH IO = –0.5 mA VCC – 0.5 VCC V Low-level output voltage VACL IO = 0.5 mA 0.5 V [Actuator Input Pin] High-level input voltage range VIH VCC – 0.5 VCC V Low-level input voltage range VIL 0 0.5 V [Output Block] Output ON resistans Ron1, 2, 3 Output delay time TRISE (H bridge) TFALL Minimum Input Pulse Width (H bridge) tmin IO = 0.5 A, the sum of lower and upper outputs 0.8 1.2 Ω Design target* 0.1 1.0 µs Design target* 0.1 0.7 µs Ch1, ch2 output pulse width ≥ 2/3 tmin Design target* 200 ns [Mute Pin] High-level input voltage range VMUH Mute OFF VCC – 0.5 VCC V Low-level input voltage range VMUL Mute ON 0 0.5 V *: Since these values are design targets, they are not measured. No. 7189 - 2/14 LV8206T Spindle motor driver block at Ta = 25°C, VCC = 2.4 V Parameter Symbol Ratings Conditions min typ Unit max [Output Block] Source1 Ron (H1) IO = 0.5 A, VS = 1.2 V, VG = 6 V, forward TR 0.4 0.6 Ω Source2 Ron (H2) IO = 0.5 A, VS = 1.2 V, VG = 6 V, reverse TR 0.4 0.6 Ω Sink Ron (L) IO = 0.5 A, VS = 1.2 V, VG = 6 V 0.4 0.6 Ω Source + Sink Ron (H+L) IO = 0.5 A, VS = 1.2 V, VG = 6 V 0.8 1.2 Ω VSOFS Design target* +9 mV [Position Detection Comparator] Input offset voltage –9 [VCO Pin] VCO high-level voltage VCOH 0.6 0.8 1.0 V VCO low-level voltage VCOL 0.3 0.5 0.7 V [S/S Pin] High-level input voltage range VSSH Start VCC – 0.5 VCC V Low-level input voltage range VSSL Stop 0 0.5 V 0.22 V [Current Limiter] Limiter voltage VRF 0.18 0.2 [Break Pin] High-level input voltage range VBRH Brake OFF VCC – 0.5 VCC V Low-level input voltage range VBRL Brake ON 0 0.5 V [PWM Pin] High-level input voltage range VPWMH VCC – 0.5 VCC V Low-level input voltage range VPWML 0 0.5 V PWM input frequency VPWMIN 190 kHz [CLK Pin ] High-level input voltage range VCLKH VCC – 0.5 VCC V Low-level input voltage range VCLKL 0 0.5 V VCC – 0.5 VCC V 0.5 V [FG Output Pin] High-level output voltage VFGH IO = –0.5 mA Low-level output voltage VFGL IO = 0.5 mA *: Since these values are design targets, they are not measured. Actuator Control Truth Table Focus and Tracking Blocks MUTE IN1 , 2F IN1, 2R OUT1, 2F OUT1, 2R H L L L L H H L H L H L H L H H H H L L L × × Z Z Z: Open Sled Motor Stepping Block MUTE S1 S2 S3 SUO SVO SWO H L L L H L Z H H L L H Z L H L H L Z H L H H H L L H Z H L L H L Z H H H L H Z L H H L H H Z Z Z H H H H Z Z Z L × × × Z Z Z Z: Open No. 7189 - 3/14 LV8206T 47 46 45 44 43 42 41 40 39 38 VS1 OUT1F OUT1R PGND1 OUT2R OUT2F VS2 MUTE IN2F 48 IN1F S/S Pin Assignments 37 IN2R 1 IN1R RMAX 36 2 CP1 3 CPC1 VCOIN 34 4 CP2 COMIN 33 5 CPC2 6 VG 7 VCC PWM 30 8 CLK S1 29 9 MODE S2 28 VCO 35 FIL 32 GND 31 LV8206T 10 VS3 S3 27 11 BRK VS 26 SVO SVCO SWCO SWO SCOM WOUT VOUT COM UOUT RF 25 SUCO SUO 12 PGND3 FG 13 14 15 16 17 18 19 20 21 22 23 24 Top view No. 7189 - 4/14 LV8206T Test Circuit Diagram 47 46 45 44 43 42 41 40 39 38 OUT1F OUT1R PGND1 OUT2R OUT2F VS2 MUTE IN2F DSP 1 IN1R 2 DSP VS1 48 IN1F VS VS S/S DSP 37 IN2R RMAX 36 VCO 35 CP1 3 CPC1 VCOIN 34 4 CP2 COMIN 33 5 CPC2 FIL 32 LV8206T 6 VG VCC GND 31 7 VCC PWM 30 8 CLK S1 29 9 S2 28 DSP DSP SUCO WOUT VOUT COM UOUT RF 25 SCOM 12 PGND3 SWO VS 26 SWCO 11 BRK SVCO S3 27 SVO DSP 10 VS3 SUO VS MODE FG 13 14 15 16 17 18 19 20 21 22 23 24 Sled motor VS Spindle motor DSP DSP DSP Top view Insert capacitors between VS and ground and between VCC and ground. No. 7189 - 5/14 LV8206T Pin Functions Pin No. Pin Name 1 IN1R H-bridge 1 logic system reverse input 2 CP1 Charge pump stepped-up voltage pulse output. Insert a capacitor between this pin and CPC1 (pin 3). 3 CPC1 4 CP2 5 CPC2 6 VG 7 VCC 8 CLK 9 MODE Function Charge pump stepped-up voltage connection. Insert a capacitor between this pin and CP1 (pin 2) Charge pump stepped-up voltage pulse output. Insert a capacitor between this pin and CPC2 (pin 5). Charge pump stepped-up voltage connection. Insert a capacitor between this pin and CP2 (pin 4) Charge pump stepped-up voltage output. Insert a capacitor between this pin and ground. Small signal system power supply. Insert a capacitor between this pin and ground. Logic system reference clock input. Input a signal with a frequency either 32 or 64 times that of the spindle PWN frequency. PWM frequency switching input. Set this pin high if the frequency input to the CLK pin (pin 8) is 32 times the spindle PWM frequency, and set this pin low if the input frequency is 64 times the spindle PWM frequency. 10 VS3 Three-phase sled drive power supply. Insert a capacitor between this pin and ground. 11 BRK Spindle motor block brake control. Reverse torque braking is applied when this pin is low. 12 PGND3 Sled output block ground 13 SUCO Sled driver block position detection comparator output 14 SUO Three-phase sled driver U phase output 15 SVO Three-phase sled driver V phase output 16 SVCO Sled driver block position detection comparator output 17 SWCO Sled driver block position detection comparator output 18 SWO 19 SCOM Three-phase sled driver W phase output Sled driver block position detection comparator common input 20 WOUT Three-phase spindle driver W phase output. Connect the corresponding motor coil to this pin. 21 VOUT Three-phase spindle driver V phase output. Connect the corresponding motor coil to this pin. 22 COM Spindle motor common point connection 23 UOUT 24 FG 25 RF 26 VS 27 S3 28 S2 29 S1 30 PWM 31 GND 32 FIL 33 COMIN Three-phase spindle driver U phase output. Connect the corresponding motor coil to this pin. FG pulse output (MOS output). This pin outputs a pulse signal equivalent to that output when three Hall-effect sensors are used. Output current detection pin. The drive current is detected using the low resistance resistor inserted between this pin and ground. Connect this pin to ground if the spindle block current limiter function will not be used. Spindle motor drive power supply. Insert a capacitor between this pin and ground. Logic inputs for the 3-phase sled block. The outputs are pins 14, 15, and 18. PWM signal input. The output transistors are turned on when the input is set high. Small signal system ground Spindle motor position detection comparator filter. Insert a capacitor between this pin and COMIN (pin 33). Spindle motor position detection comparator filter. Insert a capacitor between this pin and FIL (pin 32). VCO control voltage input. Insert a capacitor and a resistor with a high resistance in parallel between this pin and ground. 34 VCOIN 35 VCO 36 RMAX 37 IN2R 38 IN2F A control output proportional to the motor speed is generated in the logic block, and that output charges and discharges the capacitor inserted between this pin and ground. The VCO frequency is controlled by the voltage on this pin. VCO connection. Insert a capacitor between this pin and ground. The VCO frequency follows the motor speed as indicated by the VCOIN pin voltage. VCO maximum frequency setting. When the value of the connected resistor is reduced, the VCO frequency rises. H-bridge 2 logic system reverse input H-bridge 2 logic system forward input High bridge 1, 2, and three-phase sled mute pin. 39 MUTE 40 VS2 41 OUT2F H-bridge 2 forward output 42 OUT2R H-bridge 2 reverse output 43 PGND1 H-bridge 1 and 2 output block ground 44 OUT1R H-bridge 1 reverse output 45 OUT1F 46 VS1 H-bridge motor power supply. Insert a capacitor between this pin and ground. 47 S/S Spindle motor block start/stop pin. A high-level input: Start 48 IN1F H-bridge 1 logic system forward input When a low level is applied to this pin, the output pins for the above mentioned drivers are set to the high-impedance state. H-bridge 2 motor power supply. Insert a capacitor between this pin and ground. H-bridge 1 forward output No. 7189 - 6/14 LV8206T Pin Functions Pin No. Pin Name 48, 1 IN1± 38, 37 IN2± 8 CLK Pin description Equivalent circuit Logic input pin of the actuator high bridge block Input clock pin of the motor drive system PWM frequency switching pin of Spindle block. 9 MODE Input frequency relations with the CLK (pin 8) and PWM (pin 30) are as follows. When set high: fPWM=fCLK/32 VCC When set low: fPWM=fCLK/64 10kΩ Brake pin of spindle motor block. 11 BRK High-level input: Forward torque Low-level input: Brake 29 S1 28 S2 27 S3 30 PWM 39 MUTE 47 S/S Three-phase sled logic input pin PWM signal input pin of the spindle block. The output TR turns it on by a high level input on this pin. High bridge and three-phase sled mute pin Low-level input: Mute Spindle motor block start/stop pin. High-level input: Start Charge pump pulse output pin. 2 CP1 4 2 A capacitor must be connected between this pin and CPC1 (pin 3). VCC This pin must be held open when used as voltage doubler. Charge pump pulse output pin. 4 3 CP2 CPC1 A capacitor must be connected between this pin and CPC2 (pin 5). Pin for charge pump. A capacitor must be connected between this pin and CP1 (pin 2). 3 Pin for charge pump. 5 CPC2 6 VG 7 VCC A capacitor must be connected between this pin and CP2 (pin 4). VCC 5 6 Pin for charge pump. A capacitor must be connected between this pin and GND Power supply pin to supply to the small signal system circuit A capacitor must be connected between this pin and GND Continued on next page. No. 7189 - 7/14 LV8206T Continued from preceding page. Pin Name 14 SUO 15 SVO 18 SWO 12 PGND3 13 SUCO 17 SVCO 18 SWCO 24 FG 10 A capacitor must be connected between this pin and GND. Sled driver outputs. Connect these pins to the sled motor coils. 14 15 18 1kΩ VS3 Equivalent circuit 1kΩ 10 Pin description Power supply pin for sled motor driver. 1kΩ Pin No. 12 Sled output block ground VCC Sled driver block position detection comparator outputs FG pulse output pin. The pulse of three hall sensor is outputted. VG 19 SCOM 26 VS 23 UOUT 21 VOUT 20 WOUT 25 RF 22 COM 32 FIL Three-phase sled motor common point connection 1kΩ 19 Power spply for spindle motor driver. 26 A capacitor must be connected between this pin and GND. Output pin. 20 21 23 Connect the spindle motor coil. 25 VCC Output current detection pin. Drive current is detected when a resistor with a small value is connected between this pin and GND. Spindle motor common point connection connect to COM VG Waveform synthesis signal filter pin. A capacitor is connected between this pin and COMIN (pin 33). 600Ω COMIN 00 6kΩ Differential input pin of Position detection comparator. 33 600Ω 33 A capacitor must be connected between this pin and FIL (pin 32). 32 12kΩ 22 6kΩ Continued on next page. No. 7189 - 8/14 LV8206T Continued from preceding page. Pin No. Pin Name 31 GND Pin description Equivalent circuit GND pin of small signal system VCC 34 VCOIN 1kΩ 34 Pin to control the voltage of VCO pin. A capacitor must be connected between this pin and GND. VCC Oscillation frequency of VCO pin. VCO A capacitor must be connected between this pin and GND. 35 The VCO oscillation frequency changes in correspondence to the spindle motor rotation speed. 500Ω 500Ω 35 VCC Sets the maximum frequency of VCO pin. RMAX With the resistance of a resistor connected to GND reduced, the higher frequency can be set. 500Ω 36 36 40 46 46, 40 VS1/VS2 45, 44 OUT1F/R 41, 42 OUT2F/R 43 PGND1 H bridge block outputs 45 Insert capacitors between VS1 (pin 46) and ground and between VS2 (pin 40) and ground. 44 41 42 43 No. 7189 - 9/14 LV8206T Functional Description and External Components The LV8206T is a system motor driver IC that implements all the motor driver circuits required by CD and MD players in just a single IC. Since the LV8206T includes sled, focus, and tracking drivers (as H-bridge driver), it can contribute to thinner form factors in end products. Furthermore, the spindle motor driver uses a direct PWM sensorless drive method that minimizes the number of external components and provides highly efficient motor drive. This document presents information necessary to design systems with the best possible characteristics and should be read before designing driver circuits using the LV8206T. y Output Drive Circuits and Speed Control Methods The LV8206T adopts a synchronous commutation direct PWM drive method to minimize power loss in the output. Low on-resistance DMOS devices are used as the output transistors. (The upper and lower side output block device on-resistances: 0.8 Ω (typical)) The spindle driver speed control system uses two signals supplied from an external DSP: the PWM and BRK signals. The PWM signal is created by the sink side transistor, and speed is controlled by switching proportional to the duty of the signal input to the PWM pin (pin 30). (The sink side transistor is on when the PWM input is high, and off when the PWM input is low.) This IC performs variable-duty soft switching for quieter motor operation. y Current Limiter Circuit The current limiter circuit limit current is determined according to I = VRF/Rf. (VRF = 0.20 V, typical) The current limiter is activated by the peak current at the RF pin (pin 25), and turns the sink transistor off. Applications that do not use the current limiter should connect the RF pin to the power system ground. y Notes on VCO Circuit Constant Determination The LV8206T spindle block adopts a sensorless drive method. In sensorless drive, the IC detects the back EMF signal generated by the motor and uses that to determine the timing with which it applies power to the motor. For this reason, it uses a VCO signal to control the timing and other aspects. We recommend the following procedure to determine the VCO circuit external component values. — Build a test system using components with temporary values. Connect a 2.2 µF capacitor and a 4.7 MΩ resister in parallel between the VCOIN pin (pin 34) and ground, a 68KΩ resistor between the RMAX pin (pin 36) and ground, and a 3300 pF capacitor between the VCO pin (pin 35) and ground. — Determine the optimal capacitance of the VCO pin (pin 35) capacitor. Select a value that gives the shortest startup time (the time until the target speed is reached) and furthermore gives the minimum variation in the startup time. If the capacitance is too large, the variation in the startup time will be excessive, and the value too small, idling may occur. Since the optimal value of the VCO pin capacitor will vary with the motor characteristics and startup current, the value of this capacitor must be verified if the type of motor used is changed or if the specifications change. — Determine the optimal resistance of the RMAX pin (pin 36) resistor. With the motor running at the maximum operating speed, select a resistance that brings the VCOIN pin voltage to about VCC - 1.0 (V) (or lower). If the resistance is too large, the VCOIN pin voltage may rise. — Determine the optimal capacitance of the VCOIN pin (pin 34) capacitor. With the motor running at the minimum operating speed, increase the value of the VCOIN capacitor if the FG output (pin 24) pulse signal is unstable. — Determine the value of the resistor inserted between VCOIN (pin 34) and ground. The LV8206T generates a VCO control voltage, which is proportional to the spindle motor speed at the VCOIN pin. In an application that implements intermittent drive using the S/S pin (and/or the MUTE pin) to save power, the VCOIN pin potential will be retained in the power saving states due to the charge stored on the capacitor. This means that a voltage discharge resistor with a large value (a few MΩ) is required for the VCOIN pin. Choose a time constant that makes the discharge time longer than the motor free-running deceleration time. Note that when determining this time constant, the discharge characteristics may be changed by an oscilloscope probe connected to the VCOIN pin, and that this may cause problems when testing prototypes. (We recommend using an FET probe.) This discharge capacitor is not required if intermittent drive (free-running deceleration) is not used. No. 7189 - 10/14 LV8206T y S/S and Mute Circuits The S/S pin (pin 47) is the spindle driver start/stop pin; a high level selects the start state. The MUTE pin (pin 39) applies to the driver circuits other than the spindle block; a low level selects the muted state. In the muted state, the corresponding drivers (the H-bridge and 3-phase sled drivers) all go to the high-impedance state, regardless of the input logic. Since the S/S pin and the MUTE pin operate independently, both the S/S pin and the MUTE pin must be set to the low level to put the IC in full standby state (power saving mode). y BRK Circuit The BRK pin (pin 11) functions to reverse the direction of the spindle driver torque; a low level selects reverse torque breaking. When the motor speed becomes adequately slow by reverse torque breaking, the IC switches to the short-circuit braking state and stops the motor. (Note: The IC must not be in the power saving state at this point.) When using the BRK pin function to stop the motor, if the timing of the switch to short-circuit braking is too early, excessive motor rotation remains, and problems occur, the value of the RMAX pin (pin 36) resistor must be reduced. Also, if motor oscillation continues when the motor is nearly stopped, and the IC does not switch to short braking mode, insert a resistor with a value of a few kΩ at the COM pin. (Note: Verify that inserting this resistor does not adversely affect the startup characteristics.) y The CLK and PWM Signals The LV8206T CLK pin (pin 8) signal is used as the sensorless logic reference clock, for voltage step-up pulses, and for other purposes. Therefore, it must be provided at all times the IC is in the start state. The CLK input signal must be either 32 or 64 times the frequency of the PWM input signal. The MODE pin (pin 9) selects the relationship between the CLK and PWM pin frequencies; a low level on the MODE pin (pin 9) selects 64× input, a high level on the MODE pin (pin 9) selects 32× input. We recommend that the CLK input frequency be less than 6 MHz. y FG Output Circuit The FG pin (pin 24) is the spindle block FG output pin. It provides a pulse signal equivalent to that provided by systems that use three Hall-effect sensors. This output has a MOS circuit structure. y Spindle Block Position Sensor Comparator Circuit The spindle block position sensor comparator circuit uses the back EMF generated by motor rotation to detect the rotor position. The output block power application timing is determined based on the position information acquired by this circuit. Startup problems due to noise on the comparator inputs can be ameliorated by inserting a capacitor (1000 to 4700 pF) between the COMIN pin (pin 33) and the FIL pin (pin 32). Note that if the value of this capacitor is too large, the output current application timing may be delayed at higher motor speeds and efficiency may be degraded. y Charge Pump Circuit Since the LV8206T has a DMOS (n-channel) output structure, it includes a charge pump based voltage step-up circuit. A voltage multiplied by a factor of three (or a voltage of about 6.0 V) can be acquired by connecting capacitors between the CP1 and CPC1 pins and between the CP2 and CPC2 pins. It is desirable that this IC be used with the voltage relationship between the stepped-up voltage (VG) and the motor supply voltage (VS) meeting the condition VG – VS ≥ 3.0 V. Note that the IC is designed so that the stepped up voltage (VG) is clamped at about 6.0 VDC. If the stepped-up voltage (VG) exceeds 6.5 V (VGmax) due to ripple or other cause, the value of the VG pin capacitor must be increased. Observe the following points if the VG voltage is supplied externally. — The externally applied VG voltage must not exceed VGmax in the Absolute Maximum Ratings. — The capacitor between the CP1 and CPC1 pins (pins 2 and 3), and the capacitor between the CP2 and CPC2 pins (pins 4 and 5) are not required. — The sequence in which the VG voltage is applied requires care. The VG voltage must be applied after VCC, and must be removed before VCC is cut off. — Since there is an internal diode between the VCC and VG pins in the IC, a voltage such that VCC > VG must never be applied to the VG pin. No. 7189 - 11/14 LV8206T y Three-Phase Sled Driver This driver is designed for sled motor drive. The SUC0 to SWC0 pins (pins 13, 16, and 17) are the sled driver position detection comparator output pins, and are MOS outputs. These pins are used to feed back the sled motor speed information (position information) to the DSP or microcontroller. The S1 to S3 pins (pins 29, 28, and 27, respectively) are the sled driver logic inputs, and are connected to the DSP. These pins have built-in pull-up resistors. y Actuator Block The LV8206T provides two H-bridge driver channels as actuator drivers for the focus and tracking systems. The logic input pins have built-in pull-down resistors. PWM is used for actuator control, and synchronous commutation is supported. The figures below present reference data related to the dead band during control. Actuator Extremely Small Signal I/O Characteristics d Actuator Infinitesimal Signal I/O Characteristics d No loa loa No d oa l No loa d No y Notes on PCB Pattern Design The LV8206T is a system driver IC fabricated in a BI-DCMOS process, and includes bipolar circuits, MOS logic circuits, and MOS driver circuits on a single chip. This means that ground leading and sneak currents must be considered during application circuit design. — Ground and VCC/VS lines The LV8206T ground and power supply pins are classified as follows. Small-signal system ground pins → GND (pin 31) Large-signal system ground pins → PGND1 (pin 43), PGND3 (pin 12) Small-signal system power supply pins → VCC (pin 7) Large-signal system power supply pins → VS (pin 26), VS1 (pin 46), VS2 (pin 40), and VS3 (pin 10) Capacitors must be inserted between the small-signal system power supply pin (pin 7) and ground pin (pins 31). Locate these capacitors as close to the IC as possible. The large-signal system ground (PGND) pins must be connected with the shortest distances possible, and furthermore must not have any shared impedances with the small-signal system ground lines. The large-signal system power supply (VS) pins must also be connected with the shortest distances possible, and capacitors must be inserted between these pins and the corresponding large-signal system ground pin. Locate these capacitors as close to the IC as possible. — Location of small-signal system external components Of the small-signal system external components, those that are connected to ground must be connected to the small-signal system ground with the shortest possible lines. No. 7189 - 12/14 LV8206T Block Diagram MUTE VS1 IN1F Control logic Pre-driver H-bridge 2 Pre-driver H-bridge 3 IN1R OUT1F Focus OUT1R PGND1 VS2 IN2F Control logic IN2R OUT2F Tracking OUT2R PGND2 VS4 Three phase stepper S1 S2 Control logic Pre-driver Sled SUO SVO SWO S3 PGND3 SCOM Actuator Block SUCO SVCO SWCO VG CPC1 CP1 CPC2 CP2 Charge pump COMIN VCC1 VCOIN RMAX WIN VIN VCO + VCO Divider Drive waveform synthesis PLL COM VS + CLK BRK MODE UOUT Sensorless logic S/S Commutation logic VOUT VREF WOUT FG GND GND1 PWM Spindle Motor Driver Block No. 7189 - 13/14 LV8206T Specifications of any and all SANYO Semiconductor products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Semiconductor Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor products (including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Semiconductor Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO Semiconductor believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of November, 2003. Specifications and information herein are subject to change without notice. No. 7189 - 14/14