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| ICs for Compact Disc/CD-ROM Player AN8473SA Spindle motor driver IC for optical disk s Overview 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. 32 11.00.3 17 Unit: mm 6.10.3 s Features * RON = 0.5 (for both upper and lower) * 5 V single power source * Circuit current 7 mA (including step-up circuit current) 0.650.10 8.10.3 1 16 0.2-0.05 1.50.2 +0.10 (0.625) 0.65 0.3 -0.05 +0.10 s Applications * Optical disk Seating plane 0.650.10 0.10.1 (0.5) SSOP032-P-0300 VDD 16 14 13 Start 11 FG 10 H1H 7 H1L 6 H2H 5 H2L 4 H3H 3 H3L 2 VH 1 EC 8 ECR 9 PWMSW 30 Start/ stop Step-up voltage circuit OSC Thermal protection 12 VPUMP s Block Diagram BC2 BC1 17 18 32 31 VM21 VM22 VM11 VM12 A11 A12 A21 A22 A31 A32 PG2 PG1 CS GND Amp. Hall amp. matrix Distributor circuit PWMOUTU Amp. PWMOUTL FF Absolute value PWM frequency changeover circuit VT SRESET SSET VC1 x5 Output circuit 27 28 24 25 21 22 23 26 19 15 Hall bias 1 AN8473SA s Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol VH H3L H3H H2L H2H H1L H1H EC ECR FG Start VPUMP BC1 BC2 GND VDD Description Hall bias pin Hall element-3 negative input pin Hall element-3 positive input pin Hall element-2 negative input pin Hall element-2 positive input pin Hall element-1 negative input pin Hall element-1 positive input pin Torque command input pin Torque command reference input pin FG signal output pin Start/stop changeover pin Booster pin Booster capacitor connection pin 1 Booster capacitor connection pin 2 Ground pin Supply voltage pin ICs for Compact Disc/CD-ROM Player Pin No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Symbol VM21 VM22 CS N.C. A31 A32 PG2 A21 A22 PG1 A11 A12 N.C. Description Motor supply voltage pin 2 Motor supply voltage pin 2 Current det. pin N.C. Drive output 3 Drive output 3 Power current det. pin 2 Drive output 2 Drive output 2 Power current det. pin 1 Drive output 1 Drive output 1 N.C. PWMSW PWM frequency changeover pin VM12 VM11 Motor supply voltage pin 1 Motor supply voltage pin 1 s Absolute Maximum Ratings Parameter Supply voltage *2 Symbol VDD VM11, 12 VM21, 22 Rating 6.5 Unit V Drive output voltage *5 *6 V(m) V(n) IDD 15 0 to VDD 30 1 200 30 293 -30 to +85 -55 to +150 V V mA mA mA mW C C Control signal input voltage Supply current Drive output current Hall bias current *7 *3 *4 I(o) IHB(n) PD *1 Power dissipation Operating ambient temperature Storage temperature *1 Topr Tstg 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 = 25C. *2: The voltage in the step-up voltage circuit exceeds the supply voltage. For the allowable value of the step-up voltage, refer to "s Electrical Characteristics". *3: The power dissipation shown is the value of independent IC without a heat sink at Ta = 70C. Refer to the PD Ta curves of the "s 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 s Recommended Operating Range Parameter Supply voltage Symbol VDD VM11, 12 VM21, 22 Range 4.5 to 5.5 AN8473SA Unit V s Electrical Characteristics at Ta = 25C Parameter Overall Circuit current 1 Circuit current 2 Start/stop Start voltage Stop voltage Hall bias Hall bias voltage Hall amplifier Input bias current In-phase input voltage range Minimum input level Torque command In-phase input voltage range Offset voltage Dead zone Input current Input/output gain Output High-level output saturation voltage Low-level output saturation voltage Torque limit current FG FG output high-level FG output low-level In-phase input voltage range FG hysteresis width Step-up circuit Step-up voltage VPUMP VDD = 5 V 7 10 V FGH FGL VFGR HFG VDD = 5 V, IFG = - 0.01 mA VDD = 5 V, IFG = 0.01 mA VDD = 5 V VDD = 5 V 3 1.5 5 10 0.5 3.0 20 V V V mV VOH VOL ITL VDD = 5 V, IO = -500 mA VDD = 5 V, IO = 500 mA VDD = 5 V, RCS = 0.33 455 0.15 0.15 570 0.30 0.30 685 V V mA EC ECOF ECDZ ECIN ACS VDD = 5 V VDD = 5 V VDD = 5 V VDD = 5 V, EC = ECR = 2.5 V VDD = 5 V, RCS = 0.33 0.5 -100 0 -5 0.36 0 75 -1 0.48 3.9 100 150 0.60 V mV mV A A/V IBH VHBR VINH VDD = 5 V VDD = 5 V, except for H2H, H2L VDD = 5 V 1.5 60 1 5 4.0 A V mV[p-p] VHB VDD = 5 V, IHB = 20 mA 0.7 1.2 1.6 V VSTART VSTOP Voltage with which a circuit operates at VDD = 5 V and L H Voltage with which a circuit becomes off at VDD = 5 V and H L 2.7 0.7 V V IDD1 IDD2 VDD = 5 V in power save mode VDD = 5 V including step-up circuit 0 7 0.2 14 mA mA Symbol Conditions Min Typ Max Unit 3 AN8473SA ICs for Compact Disc/CD-ROM Player s Electrical Characteristics at Ta = 25C (continued) Parameter PWM oscillation changeover Input high-level Input low-level * Design reference data Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. Symbol VDD = 5 V VDD = 5 V Conditions Min Typ Max 0.5 Unit PWMH PWML 4.5 V V Parameter PWM oscillation changeover PWM frequency high-level PWM frequency low-level Thermal protection Thermal protection operating temperature Thermal protection hysteresis width Symbol Conditions VDD = 5 V, PWMSW = Low VDD = 5 V, PWMSW = High VDD = 5 V VDD = 5 V Min Typ Max Unit fPWMH fPWML TSDON TSD 80 40 kHz kHz C C 150 40 s 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 ) Pin 23: breakdown at 120 V Pin 26: breakdown at 120 V s Application Notes * PD Ta curves of SSOP032-P-0300 PD T a 1 400 1 200 1 032 1 000 Mounted on standard board (glass epoxy: 50 x 50 x t0.8 mm3) Rth(j-a) = 96.9C/ W PD = 1 032 mW (25C) Power dissipation PD (mW) 800 600 534 400 Independent IC without a heat sink Rth(j-a) = 187.1C/ W PD = 534 mW (25C) 200 000 0 25 50 75 100 125 150 Ambient temperature Ta (C) 4 ICs for Compact Disc/CD-ROM Player s Application Notes (continued) * Phase conditions between Hall input and output current Phase of Hall pin H1H A B C D E F H MH ML L ML MH H2H ML L ML MH H MH H3H ML MH H MH ML L AN8473SA H1 H3 H2 H1 H2 H3 0 ECR EC 0 Emit Output current Sink Emit Output current Sink Emit Output current Sink A B C D E F 0 A3 A2 0 A1 0 5 AN8473SA s Application Circuit Example ( Check the stipulated value of electrical characteristics and then determine resistance value.) ICs for Compact Disc/CD-ROM Player 5V 12 VPUMP 0.1 F 100 F 0.1 F 16 VDD 14 BC2 Start 100 11 Start/ stop Step-up voltage circuit OSC Thermal protection 13 BC1 17 VM21 18 VM22 32 VM11 31 VM12 2 200 pF 10 FG H1H 7 H1L 6 H2H 5 H2L 4 H3H 3 H3L 2 VH 1 100 Hall bias Hall amp. matrix Amp. Distributor circuit PWMOUTU Amp. PWMOUTL FF Absolute value PWM frequency changeover circuit VT SRESET SSET VC1 X5 Output circuit 27 A11 28 A12 24 A21 25 A22 21 A31 22 A32 23 PG2 26 PG1 19 CS 15 GND RCS = 0.33 8 Spindle speed EC control signal ECR 9 PWMSW 30 High: 40 kHz Low: 80 kHz 6 |
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