AN8470NSA

AN8470NSA PANASONIC | Alldatasheet

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ICs for Compact Disc/CD-ROM Player AN8470NSA Spindle motor driver IC for optical disk n Overview 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. n Features

• 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 n Applications
• High speed CD-ROM drive PD, DVD, CD-R, CD-RW drives n Block Diagram Unit: mm SSOP032-P-0300 11 6 (0.5) (0.625) 11.0±0.3 0.1±0.1 1.5±0.2 8.1±0.3 0.65 0.3 +0.10 –0.05 0.2+0.10 –0.05 Seating plane 7Start Start/stop 24FG 23H1H 32 VM2 3 A1 1 A2 31 A3

2 RNF2

30 RNF1

10 GND· 5

Step-up voltage circuit Thermal protection OSC Amp. Amp. PWMOUT PNFOUT SRESET V CL V T Hall amp. matrix Hall bias Oscillator Distributor circuit Output circuit SSET

AN8470NSA ICs for Compact Disc/CD-ROM Player n Pin Descriptions n Absolute Maximum Ratings Parameter Symbol Rating Unit Supply voltage *2 V DD 6.0 V V M1 V M2 Drive output voltage *5 V (m) 15.0 V Control signal input voltage *6 V (n) 0 to VDD V Supply current I DD 30.0 mA Drive output current *4 I(o) –1 200 mA Hall bias current I HB 30.0 mA Power dissipation *3 PD 293 mW Operating ambient temperature *1 T opr -20 to +70 °C Storage temperature *1 Tstg -55 to +150 °C 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 "n Electrical Characteristics". *3: For 70°C and IC alone. *5: m = 1, 3, 31 Pin No. Symbol Description

17 H3L Hall element-3 negative input pin

18 H3H Hall element-3 positive input pin

19 H2L Hall element-2 negative input pin

20 N.C. N.C.

21 H2H Hall element-2 positive input pin

22 H1L Hall element-1 negative input pin

23 H1H Hall element-1 positive input pin

24 FG FG signal output pin

25 FC Oscillator pin

26 ECR Torque command reference input pin

27 EC Torque command input pin

28 N.C. N.C. 29 N.C. N.C. 30 RNF1 Current det. pin 1

31 A3 Drive output 3

32 VM2 Motor supply voltage pin 2

Pin No. Symbol Description

1 A2 Drive output 2

2 RNF2 Current det. pin 2

3 A1 Drive output 1

4 N.C. N.C. 5 N.C. N.C.

6 VM1 Motor supply voltage pin 1

7 Start Start/stop changeover pin

8 VH Hall bias pin

10 GND Ground pin

11 BC4 Booster capacitor connection pin 4

12 BC3 Booster capacitor connection pin 3

13 BC2 Booster capacitor connection pin 2

14 BC1 Booster capacitor connection pin 1

15 VPUMP Booster pin

16 N.C. N.C.

ICs for Compact Disc/CD-ROM Player AN8470NSA n Recommended Operating Range Parameter Symbol Range Unit Supply voltage V DD 4.5 to 5.5 V V M1 V M2 n Electrical Characteristics at Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Overall Circuit current 1 I DD1 V DD = 5 V in power save mode ¾ 00 . 1 m A Circuit current 2 I DD2 V DD = 5 V ¾ 91 4 m A Start/stop Start voltage V START Voltage with which a circuit operates 2.7¾¾ V at VDD = 5 V and L fi H Stop voltage V STOP Voltage with which a circuit becomes¾¾ 0.7 V off at VDD = 5 V and H fi L Hall bias Hall bias voltage V HB V DD = 5 V, IHB = 20 mA 0.7 1.1 1.6 V Hall amplifier Input bias current I BH V DD = 5 V ¾ 15 mA In-phase input voltage range V HBR V DD = 5 V, except for H2H, H2L 1.5 ¾ 4.0 V Minimum input level V INH V DD = 5 V 60 ¾¾ mV[p-p] Torque command In-phase input voltage range EC V DD = 5 V 0.5 ¾ 3.9 V Offset voltage EC OF V DD = 5 V -100 0 100 mV Dead zone EC DZ V DD = 5 V 0 75 150 mV Input current EC IN V DD = 5 V, EC = ECR = 2.5 V -5 -1 ¾m A Input/output gain A CS V DD = 5 V, RCS = 0.33 W 0.36 0.48 0.60 A/V Output High-level output saturation voltage VOH V DD = 5 V, IO = -500 mA ¾ 0.25 0.50 V Low-level output saturation voltage VOL V DD = 5 V, IO = 500 mA ¾ 0.25 0.50 V Torque limit current I TL V DD = 5 V, RCS = 0.33 W 455 570 685 mA OSC Charging current I CH V DD = 5 V -65 -50 -35 mA Upper threshold voltage V CH V DD = 5 V 1.75 2.50 3.25 V Lower threshold voltage V CL V DD = 5 V 0.35 0.50 0.65 V

AN8470NSA ICs for Compact Disc/CD-ROM Player n Electrical Characteristics at Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit FG FG output high-level FG H V DD = 5 V, IFG = - 0.01 mA 3 ¾¾ V FG output low-level FG L V DD = 5 V, IFG = 0.01 mA ¾¾ 0.5 V In-phase input voltage range V FGR V DD = 5 V 1.5 ¾ 3.0 V FG hysteresis width H FG V DD = 5 V 5 10 20 mV Step-up circuit Step-up voltage V PUMP V DD = 5 V, VM1 = VM2 = 5 V 9.5 ¾ 15 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 T SDON V DD = 5 V ¾ 170 ¾° C temperature Thermal protection hysteresis widthDTSD V DD = 5 V ¾ 45 ¾° C n Terminal Equivalent Circuits Pin No. Symbol Equivalent circuit 1A 2

4 N.C. N.C. 5 N.C. N.C.

6 VM1 Refer to pin 1

7 Start

(typ.) 25 kW (typ.)

ICs for Compact Disc/CD-ROM Player AN8470NSA n Terminal Equivalent Circuits (continued) Pin No. Symbol Equivalent circuit 8V H 9V DD Supply voltage pin

11 BC4

12 BC3

13 BC2

14 BC1

15 VPUMP

16 N.C. N.C.

17 H3L

18 H3H

19 H2L

20 N.C. N.C. 14 13 11 12 15 23 2 kW (typ.) 2 kW (typ.) 1921 2 kW (typ.) 2 kW (typ.)

AN8470NSA ICs for Compact Disc/CD-ROM Player n 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

26 ECR

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

(typ.) V DD V DD 1 kW (typ.) 1 kW (typ.) V DD 1 kW (typ.) 1 kW (typ.) 2726

ICs for Compact Disc/CD-ROM Player AN8470NSA H1 H3 H2 H1 H2 H3 ABCDEF EC ECR Emit Output current Sink Emit Output current Sink Emit Output current Sink Phase of Hall pin A H1H H2H H3H HM L M L MH L MH ML ML H ML H ML MH MH L LM H M H B C D E F n 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 W ) Pin 11: breakdown at 80 V Pin 14: breakdown at 90 V Pin 24: breakdown at 190 V n Application Note
• Phase conditions between Hall input and output current

AN8470NSA ICs for Compact Disc/CD-ROM Player n Application Circuit Example 560 pF FC Spindle speed control signal Start/stop 23 32 VM2 10· 5 FF 27EC 26ECR Step-up voltage circuit Thermal protection OSC Amp. Amp. PWMOUT PNFOUT SRESET V CL V T Hall amp. matrix Hall bias Oscillator Distributor circuit Output circuit SSET Start FG H1H H1L H2H H2L H3H H3L VH 0.1 mF 0.1 mF 5 VV DD = 5 V V DD BC4 BC3 0.1 mF BC2 BC1 VPUMP VM1 RNF2 RNF1 GND R CS = 0.33 W