ICs for Compact Disc/CD-ROM Player AN8473SA Spindle motor driver IC for optical disk ■ Overview Unit: mm 17 1 16 6.1±0.3 32 8.1±0.3 11.0±0.3 The AN8473SA is an optical disk driver IC, featuring direct PWM drive, DMOS power drive, low ON resistance of output power MOS and 120° of duty-factor. 0.3 –0.05 ■ Applications Seating plane • Optical disk +0.10 1.5±0.2 0.2–0.05 0.1±0.1 +0.10 0.65 (0.625) 0.65±0.10 • RON = 0.5 Ω (for both upper and lower) • 5 V single power source • Circuit current 7 mA (including step-up circuit current) 0.65±0.10 ■ Features (0.5) Start 11 Step-up voltage circuit Start/ stop FG 10 Thermal protection OSC Amp. Hall amp. matrix Distributor circuit 27 28 PWMOUTU Output circuit 24 25 Amp. 21 22 PWMOUTL Hall bias EC 8 ECR 9 PWMSW 30 18 31 H3H 3 H3L 2 VH 1 17 32 H1H 7 H1L 6 H2H 5 H2L 4 12 BC1 13 BC2 14 16 VDD ■ Block Diagram VPUMP SSOP032-P-0300 23 26 FF Absolute value PWM frequency changeover circuit ×5 VT SRESET VC1 19 15 VM21 VM22 VM11 VM12 A11 A12 A21 A22 A31 A32 PG2 PG1 CS GND SSET 1 AN8473SA ICs for Compact Disc/CD-ROM Player ■ Pin Descriptions Pin No. Symbol 1 VH 2 Description Pin No. Symbol Description Hall bias pin 17 VM21 Motor supply voltage pin 2 H3L Hall element-3 negative input pin 18 VM22 Motor supply voltage pin 2 3 H3H Hall element-3 positive input pin 19 CS 4 H2L Hall element-2 negative input pin 20 N.C. N.C. 5 H2H Hall element-2 positive input pin 21 A31 Drive output 3 6 H1L Hall element-1 negative input pin 22 A32 Drive output 3 7 H1H Hall element-1 positive input pin 23 PG2 Power current det. pin 2 8 EC Torque command input pin 24 A21 Drive output 2 9 ECR Torque command reference input pin 25 A22 Drive output 2 10 FG FG signal output pin 26 PG1 Power current det. pin 1 11 Start Start/stop changeover pin 27 A11 Drive output 1 12 VPUMP Booster pin 28 A12 Drive output 1 13 BC1 Booster capacitor connection pin 1 29 N.C. N.C. 14 BC2 Booster capacitor connection pin 2 30 15 GND Ground pin 31 VM12 Motor supply voltage pin 1 16 VDD Supply voltage pin 32 VM11 Motor supply voltage pin 1 Current det. pin PWMSW PWM frequency changeover pin ■ Absolute Maximum Ratings Parameter Supply voltage *2 Symbol Rating Unit VDD 6.5 V V(m) 15 V V(n) 0 to VDD V IDD 30 mA I(o) ±1 200 mA IHB(n) 30 mA PD 293 mW Topr −30 to +85 °C Tstg −55 to +150 °C VM11, 12 VM21, 22 Drive output voltage *5 Control signal input voltage *6 Supply current Drive output current Hall bias current *4 *7 Power dissipation *3 Operating ambient temperature Storage temperature *1 *1 Note) Do not apply external currents or voltages to any pins not specifically mentioned. For circuit currents, '+' denotes current flowing into the IC, and '−' denotes current flowing out of the IC. *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. *2: The voltage in the step-up voltage circuit exceeds the supply voltage. For the allowable value of the step-up voltage, refer to "■ Electrical Characteristics". *3: The power dissipation shown is the value of independent IC without a heat sink at Ta = 70°C. Refer to the PD Ta curves of the "■ Application Notes" for details. *4: o = 17, 18, 21, 22, 23, 24, 25, 26, 27, 28, 31, 32 *5: m = 21, 22, 24, 25, 27, 28 *6: n = 2, 3, 4, 5, 6, 7, 8, 9, 11, 30 *7: n = 1 2 ICs for Compact Disc/CD-ROM Player AN8473SA ■ Recommended Operating Range Parameter Supply voltage Symbol Range Unit VDD 4.5 to 5.5 V VM11, 12 VM21, 22 ■ Electrical Characteristics at Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Overall Circuit current 1 IDD1 VDD = 5 V in power save mode 0 0.2 mA Circuit current 2 IDD2 VDD = 5 V including step-up circuit 7 14 mA Start voltage VSTART Voltage with which a circuit operates at VDD = 5 V and L → H 2.7 V Stop voltage VSTOP Voltage with which a circuit becomes off at VDD = 5 V and H → L 0.7 V VHB VDD = 5 V, IHB = 20 mA 0.7 1.2 1.6 V IBH VDD = 5 V 1 5 µA Start/stop Hall bias Hall bias voltage Hall amplifier Input bias current In-phase input voltage range VHBR VDD = 5 V, except for H2H, H2L 1.5 4.0 V Minimum input level VINH VDD = 5 V 60 mV[p-p] EC VDD = 5 V 0.5 3.9 V Offset voltage ECOF VDD = 5 V −100 0 100 mV Dead zone ECDZ VDD = 5 V 0 75 150 mV Input current ECIN VDD = 5 V, EC = ECR = 2.5 V −5 −1 µA Input/output gain ACS VDD = 5 V, RCS = 0.33 Ω 0.36 0.48 0.60 A/V High-level output saturation voltage VOH VDD = 5 V, IO = −500 mA 0.15 0.30 V Low-level output saturation voltage VOL VDD = 5 V, IO = 500 mA 0.15 0.30 V Torque limit current ITL VDD = 5 V, RCS = 0.33 Ω 455 570 685 mA FG output high-level FGH VDD = 5 V, IFG = − 0.01 mA 3 V FG output low-level FGL VDD = 5 V, IFG = 0.01 mA 0.5 V In-phase input voltage range VFGR VDD = 5 V 1.5 3.0 V FG hysteresis width HFG VDD = 5 V 5 10 20 mV VPUMP VDD = 5 V 7 10 V Torque command In-phase input voltage range Output FG Step-up circuit Step-up voltage 3 AN8473SA ICs for Compact Disc/CD-ROM Player ■ Electrical Characteristics at Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit PWM oscillation changeover Input high-level PWMH VDD = 5 V 4.5 V Input low-level PWML VDD = 5 V 0.5 V • Design reference data Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. Parameter Symbol Conditions Min Typ Max Unit PWM oscillation changeover PWM frequency high-level fPWMH VDD = 5 V, PWMSW = Low 80 kHz PWM frequency low-level fPWML VDD = 5 V, PWMSW = High 40 kHz Thermal protection operating temperature TSDON VDD = 5 V 150 °C Thermal protection hysteresis width ∆TSD VDD = 5 V 40 °C Thermal protection ■ Usage Notes • Prevent this IC from being line-to-ground fault. (To be concrete, do not short-circuit any of A31 (pin 21), A32 (pin 22), A21 (pin 24), A22 (pin 25), A11 (pin 27) and A12 (pin 28) with GND pin (pin 15).) • Be careful of the following three pins because their static breakdown voltages are low. (C = 200 pF, R = 0 Ω) Pin 23: breakdown at 120 V Pin 26: breakdown at 120 V ■ Application Notes • PD Ta curves of SSOP032-P-0300 PD T a 1 400 Power dissipation PD (mW) 1 200 Mounted on standard board (glass epoxy: 50 × 50 × t0.8 mm3) Rth(j-a) = 96.9°C/ W PD = 1 032 mW (25°C) 1 032 1 000 800 600 534 400 Independent IC without a heat sink Rth(j-a) = 187.1°C/ W PD = 534 mW (25°C) 200 000 0 25 50 75 100 125 Ambient temperature Ta (°C) 4 150 ICs for Compact Disc/CD-ROM Player AN8473SA ■ Application Notes (continued) • Phase conditions between Hall input and output current Phase of Hall pin H1H H2H H3H A H ML ML B C MH ML L ML MH H D L MH MH E ML H ML F MH MH L H1 H3 H2 H1 H2 H3 0 ECR EC 0 Emit Output current A1 0 Sink Emit Output current A2 0 Sink Emit Output current 0 A3 Sink A B C D E F 5 AN8473SA ICs for Compact Disc/CD-ROM Player ■ Application Circuit Example ( Check the stipulated value of electrical characteristics and then determine resistance value.) Start 100 Ω 11 13 BC1 14 BC2 16 VDD 0.1 µF Start/ stop Thermal protection OSC Amp. Hall amp. matrix Distributor circuit High: 40 kHz Low: 80 kHz 6 27 A11 28 A12 PWMOUTU Output circuit 24 A21 25 A22 Amp. 21 A31 22 A32 PWMOUTL Hall bias 8 Spindle speed EC control signal ECR 9 PWMSW 30 18 VM22 31 VM12 H3H 3 H3L 2 VH 1 17 VM21 32 VM11 H1H 7 H1L 6 100Ω 0.1 µF Step-up voltage circuit 2 200 pF 10 FG H2H 5 H2L 4 12 VPUMP 5V 100 µF 23 PG2 26 PG1 FF Absolute value PWM frequency changeover circuit X5 VT SRESET SSET VC1 19 CS 15 GND RCS = 0.33 Ω