ICs for Compact Disc/CD-ROM Player AN8470NSA Spindle motor driver IC for optical disk ■ Overview Unit: mm 16 +0.10 0.65 (0.625) ■ Applications 0.3 –0.05 Seating plane • High speed CD-ROM drive PD, DVD, CD-R, CD-RW drives H1H H1L H2H H2L H3H H3L VH Start/stop VM1 Thermal protection Step-up voltage circuit 24 OSC 23 32 22 Output circuit Distributor circuit Hall amp. matrix 3 1 18 Amp. 31 17 8 Hall bias 2 PWMOUT 30 EC ECR VM2 Amp. 21 19 (0.5) 6 VPUMP 15 BC1 BC2 13 14 BC3 12 11 BC4 VDD 9 FG 7 +0.10 0.2–0.05 SSOP032-P-0300 ■ Block Diagram Start 0.65±0.10 • Low power consumption due to a direct PWM system • With start and stop pin • Reverse breaking by EC/ECR voltage • With Hall bias pin • Surface-mount small package 0.65±0.10 6.1±0.3 1 ■ Features 1.5±0.2 17 0.1±0.1 32 8.1±0.3 11.0±0.3 The AN8470NSA is a high performance IC suited for driving a spindle motor of an optical disk such as CD-ROM, PD, DVD, CD-R, CD-RW, etc. A1 A2 A3 RNF2 RNF1 27 VT FF PNFOUT 26 ×5 10 GND SRESET FC 25 Oscillator VCL SSET 1 AN8470NSA ICs for Compact Disc/CD-ROM Player ■ Pin Descriptions Pin No. Symbol 1 A2 2 RNF2 3 A1 4 Description Pin No. Symbol Description Drive output 2 17 H3L Hall element-3 negative input pin Current det. pin 2 18 H3H Hall element-3 positive input pin Drive output 1 19 H2L Hall element-2 negative input pin N.C. N.C. 20 N.C. N.C. 5 N.C. N.C. 21 H2H Hall element-2 positive input pin 6 VM1 Motor supply voltage pin 1 22 H1L Hall element-1 negative input pin 7 Start Start/stop changeover pin 23 H1H Hall element-1 positive input pin 8 VH Hall bias pin 24 FG FG signal output pin 9 VDD Supply voltage pin 25 FC Oscillator pin 10 GND Ground pin 26 ECR 11 BC4 Booster capacitor connection pin 4 27 EC 12 BC3 Booster capacitor connection pin 3 28 N.C. N.C. 13 BC2 Booster capacitor connection pin 2 29 N.C. N.C. 14 BC1 Booster capacitor connection pin 1 30 RNF1 Current det. pin 1 15 VPUMP Booster pin 31 A3 16 N.C. N.C. 32 VM2 Torque command reference input pin Torque command input pin Drive output 3 Motor supply voltage pin 2 ■ Absolute Maximum Ratings Parameter Supply voltage *2 Symbol Rating Unit VDD 6.0 V V(m) 15.0 V V(n) 0 to VDD V IDD 30.0 mA I(o) ±1 200 mA IHB 30.0 mA PD 293 mW Topr −20 to +70 °C Tstg −55 to +150 °C VM1 VM2 Drive output voltage *5 Control signal input voltage *6 Supply current Drive output current *4 Hall bias current 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: For 70°C and IC alone. *4: o = 1, 2, 3, 6, 30, 31, 32 *5: m = 1, 3, 31 *6: n = 7, 17, 18, 19, 21, 22, 23, 26, 27 2 ICs for Compact Disc/CD-ROM Player AN8470NSA ■ Recommended Operating Range Parameter Supply voltage Symbol Range Unit VDD 4.5 to 5.5 V VM1 VM2 ■ 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 0.1 mA Circuit current 2 IDD2 VDD = 5 V 9 14 mA Start/stop 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 1.1 1.6 V IBH VDD = 5 V 1 5 µA 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 0.25 0.50 V Low-level output saturation voltage VOL VDD = 5 V, IO = 500 mA 0.25 0.50 V Torque limit current ITL VDD = 5 V, RCS = 0.33 Ω 455 570 685 mA Charging current ICH VDD = 5 V −65 −50 −35 µA Upper threshold voltage VCH VDD = 5 V 1.75 2.50 3.25 V Lower threshold voltage VCL VDD = 5 V 0.35 0.50 0.65 V Torque command In-phase input voltage range Output OSC 3 AN8470NSA ICs for Compact Disc/CD-ROM Player ■ Electrical Characteristics at Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit FG 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 9.5 15 V Step-up circuit Step-up voltage VPUMP VDD = 5 V, VM1 = VM2 = 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 Thermal protection Thermal protection operating temperature TSDON VDD = 5 V 170 °C Thermal protection hysteresis width ∆TSD VDD = 5 V 45 °C ■ Terminal Equivalent Circuits Pin No. 1 Symbol Equivalent circuit A2 6 32 2 RNF2 31 3 1 3 A1 2 4 N.C. N.C. 5 N.C. N.C. 6 VM1 Refer to pin 1 7 Start 7 25 kΩ (typ.) 25 kΩ (typ.) 4 30 ICs for Compact Disc/CD-ROM Player AN8470NSA ■ Terminal Equivalent Circuits (continued) Pin No. 8 Symbol Equivalent circuit VH 8 9 VDD Supply voltage pin 10 GND Ground pin 11 BC4 14 13 12 BC3 13 BC2 14 BC1 15 VPUMP 16 N.C. 17 H3L 11 12 N.C. 18 18 H3H 19 H2L 23 17 2 kΩ (typ.) 2 kΩ (typ.) 21 N.C. 22 19 2 kΩ (typ.) 20 15 2 kΩ (typ.) N.C. 5 AN8470NSA ICs for Compact Disc/CD-ROM Player ■ Terminal Equivalent Circuits (continued) Pin No. Symbol Equivalent circuit 21 H2H Refer to pin 19 22 H1L Refer to pin 17 23 H1H Refer to pin 17 24 FG VDD 50 kΩ (typ.) 24 25 FC VDD 25 1 kΩ (typ.) 26 1 kΩ (typ.) ECR VDD 27 EC 27 26 1 kΩ (typ.) 6 1 kΩ (typ.) 28 N.C. N.C. 29 N.C. N.C. 30 RNF1 Refer to pin 1 31 A3 Refer to pin 1 32 VM2 Refer to pin 1 ICs for Compact Disc/CD-ROM Player AN8470NSA ■ Usage Notes • Prevent this IC from being line-to-ground fault. (To be concrete, do not short-circuit any of A1 (pin 3), A2 (pin 1) and A3 (pin 31) with GND pin (pin 10).) • Be careful of the following three pins because their static breakdown voltages are low. (C = 200 pF, R = 0 Ω) Pin 11: breakdown at 80 V Pin 14: breakdown at 90 V Pin 24: breakdown at 190 V ■ Application Note • Phase conditions between Hall input and output current 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 Phase of Hall pin H1H H2H H3H A B C D E F H ML ML MH ML L ML MH H L MH MH ML MH H MH ML L 7 AN8470NSA ICs for Compact Disc/CD-ROM Player ■ Application Circuit Example 7 Start/stop 0.1 µF Thermal protection Step-up voltage circuit FG 24 5V 6 VM1 15 VPUMP 14 BC1 0.1 µF 13 BC2 11 BC4 9 VDD Start 12 BC3 0.1 µF VDD = 5 V OSC H1H 23 32 VM2 H1L 22 H2H 21 H2L 19 Amp. Output circuit Distributor circuit Hall amp. matrix 1 A2 H3H 18 Amp. 31 A3 H3L 17 VH 8 3 A1 Hall bias 2 RNF2 PWMOUT 30 RNF1 27 Spindle speed EC control signal 26 ECR VT PNFOUT SRESET FC 25 560 pF 8 Oscillator RCS = 0.33 Ω FF VCL SSET ×5 10 GND