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| ICs for Compact Disc/CD-ROM Player AN8814SB 4-channel driver IC for optical disk drive s Overview The AN8814SB is a BTL system 4-channel driver and is encapsulated in the SMD package which excels in heat radiation characteristic. 18.40.2 (5.15) (4.8) 28 22 21 15 (1.315) Unit: mm s Features * Wide output dynamic range regardless of reference voltage of the system * Driver I/O gain setting is possible with an additional external resistor * 3.3 V supply voltage is available due to an external PNP-tr. * Additional OP-amp. built-in 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) (6.4) 0.8 0.35+0.10 -0.05 Seating plane s Applications * MD, CD/CD-ROM drive * DVD/DVD-ROM drive HSOP042-P-0400 s Block Diagram 20 PV CC1 0.10.1 18 VO1+ 17 VO1- 16 VO2+ 15 VO2- 14 VO3+ 13 VO3- 12 VO4+ 11 VO4- 21 1 PVCC 2 6 1 PV CC 2 9 PVCC2 8 4 VCC 5 Direction detector Direction detector Direction detector Direction detector VCC 7V CC detector Thermal protection Fin GND circuit 22 V REF 1 2 3.3 V reg. 24 25 19 23 26 27 28 10 PGND2 PC1 IN2 PGND1 PC2 IN1 IN3 IN4 1 AN8814SB 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 Op-amp. output pin Op-amp. inverted input pin Op-amp. non-inverted input pin Power supply pin 1/2 PVCC output pin 2 Driver power supply pin 2 Driver GND pin 2 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 Driver power supply pin 1 1/2 PVCC output pin 1 VREF input pin Motor driver-1 input pin PC (power cut) input pin 1 Motor driver-2 input pin PC (power cut) input pin 2 Motor driver-3 input pin Motor driver-4 input pin GND pin s Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation *2 *1 Symbol SVCC ICC PD Topr Tstg Rating 17 542 -30 to +85 -55 to +150 Unit V mA mW C C Operating ambient temperature Storage temperature *1 Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25C. *2: Ta = 85C. 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 4.0 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 4 Input offset voltage Output offset voltage Gain Maximum output amplitude (+) Maximum output amplitude (-) Motor driver 1 High-level threshold voltage Low-level threshold voltage Motor driver 2 High-level threshold voltage 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 High-level output voltage Low-level output voltage Output driving current sink Output driving current source VOF IBOP VOH VOL ISIN ISOU VCC = 5 V VCC = 5 V VCC = 5 V VCC = 5 V VCC = 5 V VCC = 5 V -10 4.0 2.0 2.0 0 150 VREG VR VV VCC = 5 V VCC = 5 V VCC = 5 V/12 V 3.1 -50 -5 3.3 0 0 VRST IIN = 10 A, R1 to R 4 = 10 k 2.1 2.3 VPCH2 VPCL2 VCC = 5 V, RL2 = 8 , R2 = 10 k VCC = 5 V, RL2 = 8 , R2 = 10 k 2.0 VPCH1 VPCL1 VCC = 5 V, RL1 = 8 , R1 = 10 k VCC = 5 V, RL1 = 8 , R1 = 10 k 2.0 VIOF VOOF G VL+ VL- VCC = 5 V, VPC1 = VPC2 = 0 V, RL1 to RL4 = 8 k, R1 to R4 = 10 k VCC = 5 V, VPC1 = VPC2 = 0 V, RL1 to RL4 = 8 k, R1 to R4 = 10 k VCC = 5 V, VPC1 = VPC2 = 0 V, RL1 to RL4 = 8 k, R1 to R4 = 10 k VCC = 5 V, VPC1 = VPC2 = 0 V, RL1 to RL4 = 8 k, R1 to R4 = 10 k VCC = 5 V, VPC1 = VPC2 = 0 V, RL1 to RL4 = 8 k, R1 to R4 = 10 k -10 -50 18.0 2.4 0 0 20.0 2.7 -2.7 Symbol ITOT VCC = 5 V Conditions Min 5 Typ 10 AN8814SB Max 15 Unit mA 10 50 22.0 -2.4 mV mV dB V V 0.5 0.5 V V V V 2.5 V 3.5 50 5 V mV mV 10 500 1.5 mV nA V V mA mA 3 AN8814SB ICs for Compact Disc/CD-ROM Player s Electrical Characteristics at Ta = 25C (continued) * Design reference data Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. Parameter Thermal protection circuit Operating temperature equilibrium value Operating temperature hysteresis width Symbol Conditions Min Typ Max Unit C C TTHD TTHD 180 45 s Usage Notes 1. Avoid the short-circuits between output and VCC , and between output pin and GND. Otherwise, the IC is likely to break down or emit smoke. 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 AN8814SB RL1 VREF R4 RL2 V4 R3 V3 R2 V2 R1 V1 PVCC1 Fin 28 27 26 25 24 23 22 20 19 18 17 16 13 Fin 1 2 3 4 5 6 7 8 21 10 11 12 SVCC PVCC2 RL4 RL3 When the AN8814SB 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 |) R1 R2 V3 V4 + x (2 x SVCC + | V14 -V13 |) + x (2 x SVCC + | V12 -V11 |)} R3 R4 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 ISVCC + PVCC1 x IPVCC1 + PVCC2 x IPVCC2 7. Allowable power dissipation in a load operating mode (PD) comes roughly as follows: PD = PD1 + PD + PS 14 9 15 5 |
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