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| ICs for Compact Disc/CD-ROM Player AN8813NSB 4-channel driver IC for optical disk drive s Overview The AN8813NSB is a 4-channel driver IC of the BTL method. Ch.1 is used only for the loading motor with little gain dispersion. 18.40.2 (5.15) (4.8) 28 22 21 15 (1.315) Unit: mm s Features * For the loading motor channel, there are 4 modes, that is, forward rotation, reverse rotation, brake and standby modes, and you can select a mode among them. The gain of it is fixed to 6 dB (0.5 dB) with a small dispersion among the products. * 3.3 V supply voltage is available due to an external PNP-tr. * Driver I/O gain setting is possible with an additional external resistor * Since the output and input lines are separated and respectively collected together, pattern designing is relatively easy. 8.30.2 10.930.30 0.30-0.05 +0.10 0 to 10 1 7 8 14 0.650.20 2.70.2 (1.2) 0.8 (6.4) 0.35+0.10 -0.05 Seating plane HSOP042-P-0400 s Applications * CD/CD-ROM drive * DVD/DVD-ROM drive s Block Diagram PVCC1 PVCC2 9 VO1+ VO1- VO2+ VO2- VO3+ VO3- VO4+ VO4- 20 18 17 16 15 14 13 12 21 22 24 23 11 0.10.1 1 2 PVCC 1 2 PVCC 8 SVCC detector Direction detector Direction detector Direction detector Direction changeover Thermal protection circuit 7 SV CC 1 2 3.3 V reg. Fin GND 28 V REF Decoder 19 25 26 27 10 4 5 MC1 PGND1 IN1 IN2 IN3 IN4 PGND2 MC2 6 1 AN8813NSB s Pin Descriptions Pin No. 1 Description Base control pin for an external transistor of 3.3 V regulator 2 3 4 5 6 7 8 9 10 11 12 13 14 3.3 V regulator output monitor pin N.C. pin Motor driver-4 input pin Motor driver-4 control pin 1 Motor driver-4 control pin 2 Power supply pin (SVCC) 1/2 PVCC output pin 2 Driver power supply pin 2 (PVCC2) Driver GND pin 2 (PGND2) Motor driver-4 reverse rotation output pin Motor driver-4 forward rotation output pin Motor driver-3 reverse rotation output pin Motor driver-3 forward rotation output pin ICs for Compact Disc/CD-ROM Player Pin No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Fin Description Motor driver-2 reverse rotation output pin Motor driver-2 forward rotation output pin Motor driver-1 reverse rotation output pin Motor driver-1 forward rotation output pin Driver GND pin 1 (PGND1) Driver power supply pin 1 (PVCC1) 1/2 PVCC output pin 1 Op-amp. non-inverted input pin Op-amp. inverted input pin Op-amp. output pin Motor driver-1 input pin Motor driver-2 input pin Motor driver-3 input pin VREF input pin GND pin s Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation *2 *1 Symbol SVCC ICC PD Topr Tstg Rating 18 542 -30 to +85 -55 to +150 Unit V mA mW C C Operating ambient temperature Storage temperature *1 Note) *1: Except for the power dissipation, operating ambient temperature and storage temperature, all ratings are for Ta = 25C. *2: Ta = 85C. For the independent IC without a heat sink. Referring to "s Application Circuit Example", following the allowable power dissipation characteristic curve of "s Application Notes". s Recommended Operating Range Parameter Supply voltage Symbol SVCC , PVCC1 , PVCC2 Range 4.5 to 14 Unit V 2 ICs for Compact Disc/CD-ROM Player s Electrical Characteristics at Ta = 25C Parameter Current consumption with no load Motor driver 1 to motor driver 3 Input offset voltage Output offset voltage Gain Maximum output amplitude (+) Maximum output amplitude (-) Motor driver 4 Input bias current Forward rotation gain Reverse rotation gain Maximum output amplitude (+) Maximum output amplitude (-) Output leak current at standby VIOF VOOF G VL+ VL- VCC = 8 V, RL1 to RL3 = 8 , R1 to R3 = 10 k VCC = 8 V, RL1 to RL3 = 8 , R1 to R3 = 10 k VCC = 8 V, RL1 to RL3 = 8 , R1 to R3 = 10 k VCC = 8 V, RL1 to RL3 = 8 , R1 to R3 = 10 k VCC = 8 V, RL1 to RL3 = 8 , R1 to R3 = 10 k VCC = 8 V, VIN4 = 1 V VIN4 = 1 V, VCC = 8 V RL4 = 8 , VMC = 5 V VIN4 = 1 V, VCC = 8 V RL4 = 8 , VMC = 5 V VIN4 = 4 V, VCC = 8 V RL4 = 8 , VMC = 5 V VIN4 = 4 V, VCC = 8 V RL4 = 8 , VMC = 5 V -10 -50 18.0 4.4 0 0 20.0 5.0 -5.0 Symbol ITOT Conditions VCC = 8 V, VIN4 = 1 V Min 5 Typ 10 AN8813NSB Max 15 Unit mA 10 50 22.0 -4.4 mV mV dB V V For loading motor IIN4 G4+ G4- V4L+ V4L- 5.0 5.0 4.4 -80 2.0 150 5.5 5.5 5.0 -5.0 0 500 6.0 6.0 -4.4 10 80 0.3 nA dB dB V V A mV V V IOL(STB) VIN4 = 1 V, VCC = 8 V RL4 = 8 , VMC = 5 V Output offset voltage at braking VOF(BRK) VIN4 = 1 V, VCC = 8 V RL4 = 8 , VMC = 5 V MC1 pin, MC2 pin high-level threshold voltage MC1 pin, MC2 pin low-level threshold voltage Reset circuit Reset operation release supply voltage 3.3 V regulator Output voltage Output load fluctuation Supply voltage fluctuation Op-amp. Input offset voltage Input bias current VOF IBOP VCC = 8 V VCC = 8 V VREG VR VV VCC = 8 V VCC = 8 V VCC = 8 V to 12 V VRST IIN = 10 A, R1 to R3 = 10 k VMCH VMCL VIN4 = 1 V, VCC = 8 V RL4 = 8 VIN4 = 1 V, VCC = 8 V RL4 = 8 3.0 3.2 3.3 V 3.1 -50 -5 -5 3.3 0 0 3.5 50 5 V mV mA 0 150 5 500 mV nA 3 AN8813NSB ICs for Compact Disc/CD-ROM Player s Electrical Characteristics at Ta = 25C (continued) Parameter OP-amp. (continued) High-level output voltage Low-level output voltage Output driving current sink Output driving current source * Design reference data Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. Symbol VCC = 8 V VCC = 8 V VCC = 8 V VCC = 8 V Conditions Min Typ Max 1.7 Unit VOH VOL ISIN ISOU 6.0 2.0 2.0 V V mA mA Parameter Thermal protection circuit Operating temperature equilibrium value Operating temperature hysteresis width Motor driver 4 IN4 pin input setting range Symbol Conditions Min Typ Max Unit C C TTHD TTHD 180 45 VIN4 0.5 2.5 V s Usage Notes 1. This IC has no output short-circuit protection circuit and is likely to emit smoke and break down when there is a short-circuit between output and VCC or output and GND. 2. An appropriate prior study should be done for use of dip soldering. s Application Notes * PD Ta curves of HSOP042-P-0400 PD T a 2.500 2.240 2.000 Power dissipation PD (W) Mounted on standard board (glass epoxy: 75 mm x 75 mm x t1.6 mm) Rth(j-a) = 55.8C/W 1.500 1.042 1.000 Independent IC without a heat sink Rth(j-a) = 119.9C/W 0.500 0.000 0 25 50 75 100 125 150 Ambient temperature Ta (C) 4 ICs for Compact Disc/CD-ROM Player s Application Circuit Example AN8813NSB VREF R3 28 V3 V2 V1 RL1 PVCC1 22 21 19 18 17 16 13 23 24 Fin 20 RL2 R2 26 R1 25 27 Fin 10 11 12 5V SVCC V4 PVCC2 RL4 RL3 When the AN8813NSB is use, take into account the following cautions and follow the power dissipation characteristic curve. 1. Load current IP1 flowing into load RL1, RL2 is supplied through pin 20. | V18 -V17 | | V16 -V15 | IP1 = + RL1 RL2 2. Load current IP2 flowing into load RL3, RL4 is supplied through pin 9. | V14 -V13 | | V12 -V11 | IP2 = + RL3 RL4 3. Dissipation increase (PD) inside the IC (power output stage) caused by loads RL1, RL2, RL3 and RL4 is as follows: | V18 -V17 | | V16 -V15 | PD = (PVCC1 - | V18 -V17 |) x + (PVCC1 - | V16 - V15 |) + RL1 RL2 | V14 -V13 | | V12 -V11 | = (PVCC2 - | V14 -V13 |) x + (PVCC2 - | V12 - V11 |) x RL3 RL4 4. Dissipation increase (PS) inside the IC (signal block supplied from pin 7) caused by loads RL1, RL2, RL3 and RL4 comes roughly as follows: V V PS = 3 x { 1 x (2 x SVCC + | V18 -V17 |) + 2 x (2 x SVCC + | V16 -V15 |) R2 R1 V3 V4 + x (2 x SVCC + | V14 -V13 |)} + x (3 x SVCC + | V12 -V11 |), where R4: Internal resistor 12.3 k R4 R3 5. Dissipation increase in a driver operating mode is PD + PS . 6. Allowable power dissipation without load (PD1) can be found as follows: PD1 = SVCC x I(SVCC) +PVCC1 x I(PVCC1) + PVCC2 x I(PVCC2) 7. Allowable power dissipation in a load operating mode (PD) comes roughly as follows: PD = PD1 + PD + PS 14 1 2 3 4 5 6 7 8 9 15 5 |
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