ICs for CD/CD-ROM Player AN8780SB (Under development) 4Ch. Linear Driver IC for CD/CD-ROM Unit : mm ■ Overview The AN8780SB employs 4ch. H-bridge system that is suitable for driver or actuator of CD player. Also it employs the surface mounting type package superior in radiation characteristics. 15 21 8.3±0.20 22 ■ Features • Wide output D-range is available regardless of reference voltage on the system • 4 ch. BTL Driver built-in. Particularly suitable for driver of actuator or motor of 5 to 20Ω load. • 2 ch. independently controllable PC (Power Cut) feature, and 4 ch. simultaneously controllable PC feature built-in. • Thermal shut down circuit (with hysteresis) built-in. • Control for proper heat of IC by separating the power supplies for signal line and output line. • Provided with reset output pin. • Shot brake mode. 1 0 ~ 10˚ 0.65±0.20 14 8 (6.4) (1.2) 0.35 –+0.10 0.05 0.8 0.10±0.10 2.7±0.30 7 (1.315) 10.93±0.30 0.30 28 +0.10 – 0.05 18.4±0.20 (5.15) (4.8) 28 pin, fin attached SOP package (HSOP042-P-0400) The AN8780SB is under development, so these described contents may be revised without prior notice. ■ Application CD player, CD-ROM, for drive of motor ■ Block Diagram PGND2 NC 20 19 D4+ D4– 18 17 BTL Linear Driver Ch.4 D3+ D3– 16 15 D2+ D2– 14 13 BTL Linear Driver Ch.2 BTL Linear Driver Ch.3 D1+ D1– 12 NC PGND1 11 10 9 BTL Linear Driver Ch.1 21 PVCC2 8 PVCC1 Thermal Protect Ch.4 Ch.3 Absolute V–1 Direction Det. Absolute V–1 Direction Det. Ch.2 Ch.1 Absolute V–1 Direction Det. Absolute V–1 Direction Det. PC1 7 VCC Monitor FIN + – + – VREF Monitor + – + – 22 SVCC RESET 23 NC 24 VREF 25 IN4 26 IN3 27 28 RESET IN NC 1 2 RESET NC OUT VCC 3 4 IN2 5 PC2 NC 6 IN1 ICs for CD/CD-ROM Player AN8780SB ■ Pin Description Pin No. Pin Name Pin No. Pin Name 1 Reset output pin 16 Normal rotation output pin of motor driver 3 2 NC 17 Reverse rotation output pin of motor driver 4 3 Input pin of motor driver 2 18 Normal rotation output pin of motor driver 4 4 PC 2 (Power Cut) input pin 19 5 NC 20 GND 2 for driver 6 Input pin for motor driver 1 21 VCC 2 for driver 7 PC (Power Cut) 1 input pin 22 Supply pin 8 VCC 1 for driver 23 NC 9 GND 1 for driver 24 VREF input pin 10 NC 25 Input pin of motor driver 4 11 Reverse rotation output pin of motor driver 1 26 Input pin of motor driver 3 12 Normal rotation output pin of motor driver 1 27 Reset input pin 13 Reverse rotation output pin of motor driver 2 28 NC 14 Normal rotation output pin of motor driver 2 Fin GND 15 Reverse rotation output pin of motor driver 3 ■ Absolute Maximum Ratings (Ta=25˚C) Symbol Rating Supply Voltage Parameter VCC 20 Supply Current ICC Power Dissipation Note) PD Unit V mA 3140 mW Output current Iout 500 mA Operating Ambient Temperature Topr –30 ~ + 85 ˚C Storage Temperature Tstg –55 ~ +150 ˚C Note) For surface mounting on 100 × 80 × 1.6 mm double face glass epoxy board. ■ Recommended Operating Range (Ta=25˚C) Parameter Operating Supply Voltage Range Symbol VCC PVCC Range 4.5V ~ 14V ICs for CD/CD-ROM Player AN8780SB ■ Electrical Characteristics (Ta=25˚C±2˚C) Parameter Symbol Itot Total Circuit Current Condition min. PVCC1 = PVCC2 = SVCC = 8V typ. 10 max. 20 Unit 30 mA –10 10 mV –60 60 mV 21 dB 1.7 dB Drivers 1 to 4 Input Offset Voltage VIOF Output Offset Voltage VOOF Gain (+) G+ (+) (–) Relative Gain DG Limit Voltage (+) VL+ Limit Voltage (–) VL – Dead Zone Width VDZ PVCC1 = PVCC2 = SVCC = 8V RL = 8Ω PVCC1 = PVCC2 = SVCC = 8V RL = 8Ω PVCC1 = PVCC2 = SVCC = 8V RL = 8Ω PVCC1 = PVCC2 = SVCC = 8V RL = 8Ω PVCC1 = PVCC2 = SVCC = 8V RL = 8Ω PVCC1 = PVCC2 = SVCC = 8V RL = 8Ω PVCC1 = PVCC2 = SVCC = 8V RL = 8Ω 14 17 –1.7 4.4 5.0 V –5.0 –10 –4.4 V 20 mV PC Operation Threshold H VPCH Threshold L VPCL PVCC1 = PVCC2 = SVCC = 8V RL = 8Ω PVCC1 = PVCC2 = SVCC = 8V RL = 8Ω 1.4 V 0.5 V 4.5 V 0.31 V Reset circuit Reset Operation Release Supply Voltage VRST Threshold Hysteresis Width VHYS 0.09 VR 1.85 VREF Detection 0.17 V Heat Protection Circuit TTHD ( ) (180) ( ) ˚C DTTHD ( ) (45) ( ) ˚C Operation Temperature Equilibrium Value Note 1) Operation Temperature Hysteresis Width Note 1) Note 1) Characteristic value in parentheses is a reference value for design but not a guaranteed value. ■ Characteristic Curve PD –Ta 4,000 Glass epoxy board (100mm × 80mm × 1.6mm) Rthj– a = 39.8˚C/W PD = 3141mW (25˚C) 3,600 Power Dissipation PD (mW) 3,200 2,800 2,400 2,000 Unit Rthj– a = 111.6˚C/W PD = 1120mW (25˚C) 1,600 1,200 800 400 0 0 25 50 75 100 Ambient Temperature Ta (˚C) 125 150