ICs for Compact Disc/CD-ROM Player AN8730SB 4-channel driver IC for optical disk ■ Overview 28 14 15 11.6±0.3 1 (0.4) 7.2±0.3 9.3±0.3 0.9±0.1 0.2 +0.1 –0.05 0.9±0.1 2.05±0.2 0.1±0.1 0.8 ■ Features • Low power consumption due to PWM control of power supply • Wide output D-range independent of the reference voltage of the system • Enable to set input/output gain by an external resistor • Independent power on/off for 2 channels and simultaneous on/off for other 2 channels as well • Battery voltage detection circuit built-in • Thermal shut-down circuit (with hysteresis) built-in 0.3±0.1 Unit: mm The AN8730SB is a 4-channel driver IC, which can operate in a low voltage, employing the low power consumption type H-bridge system with a switching regulator. It is especially suited for a portable CD/MD player. SSOP028 P-0375A ■ Applications • Portable CD/MD 1 AN8730SB ICs for Compact Disc/CD-ROM Player 12 STNBY ■ Block Diagram SGND PGND 8 Thermal shut-down Power cut 21 VREF detection 25 3 TRVSTOP BTL 24 Absolute value 4 INTV 23 6 PC BTL 22 Absolute value 5 INSP 19 10 LDON BTL 20 Absolute value 9 INFO Absolute value 11 INTR 17 BTL 18 VC 27 PWM TB 26 14 V REF Maximum value 15 V SEN Triangular wave 13 SVCC 28 1 PVCC CLK 2 16 EMP PWMG 7 2 CT ICs for Compact Disc/CD-ROM Player AN8730SB ■ Pin Descriptions Pin No. Symbol 1 PVCC 2 CLK 3 Description Pin No. Symbol Supply voltage pin 15 VSEN Empty detection input pin External sync. input pin 16 EMP Empty detection output pin 17 TR− Driver output pin TRVSTOP Driver on-off control pin Description 4 INTV Driver input pin 18 TR+ Driver output pin 5 INSP Driver input pin 19 FO− Driver output pin 6 PC Driver on-off control pin 20 FO+ Driver output pin 7 CT Triangular wave oscillation pin 21 PGND 8 SGND Ground pin 22 SP+ Driver output pin 9 INFO Driver input pin 23 SP− Driver output pin 10 LDON Driver on-off control pin 24 TV+ Driver output pin 11 INTR Driver input pin 25 TV− Driver output pin 12 STNBY Standby mode input pin 26 TB PWM circuit output pin 13 SVCC Supply voltage pin 27 VC Drive supply voltage pin 14 VREF VREF input pin 28 PWMG Ground pin PWM loop gain adjustment pin ■ Absolute Maximum Ratings Parameter Symbol Rating Unit PVCC 15 V SVCC 6 VC 9 PVCC − 0.3 to +15.0 SVCC − 0.3 to +6.0 ICC mA Supply current 1 ISVCC 50 mA Supply current 2 IPVCC 100 mA Drive output current IO 500 mA *2 PD 345 mW V10max 15.0 V Topr −25 to +75 °C Tstg −55 to +125 °C Supply voltage Supply voltage range Supply current Power dissipation Max. application voltage to VSEN pin Operating ambient temperature Storage temperature *1 *1 V Note) 1. 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. 2. *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. *2: Ta = 75°C. For the independent IC without a heat sink. Refer to "■ Application Note" at mounting on PCB. ■ Recommended Operating Range Parameter Supply voltage Symbol Range Unit PVCC 2.7 to 14.0 V SVCC 2.7 to 5.5 3 AN8730SB ICs for Compact Disc/CD-ROM Player ■ Recommended Operating Range Parameter Supply voltage Symbol Range Unit PVCC 2.7 to 14.0 V SVCC 2.7 to 5.5 ■ Electrical Characteristics at SVCC = PVCC = 5 V, Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Supply current of SVCC at no load I13Q PVCC = SVCC = 5 V, VREF = 1.5 V 4.2 7.0 mA In standby mode supply current of SVCC at no load I13S PVCC = SVCC = 5 V, VREF = 1.5 V STNBY = 0 V 0.8 2 mA Supply current of PVCC at no load I1Q PVCC = SVCC = 5 V, VREF = 1.5 V 3.4 5.5 mA VC leak current IVCL VC = 9 V 10 µA CT = 150 pF, 470 kΩ 165 kHz <Common block> Free-run oscillation frequency at CT pin f3F CKL pin block CLK pin input threshold VTHH V2THH fIN = 88.2 kHz 2.0 V CLK pin input threshold VTHL V2THL fIN = 88.2 kHz 0.8 V V16TH1 1.7 1.85 1.9 V Hysteresis width from EMP pin empty detection to recovery V16H 50 80 110 mV EMP pin output voltage V16O 0.5 V VSEN pin input resistance R15 21.5 25 28.5 kΩ Empty detection block EMP pin detection voltage IEMP = +1.0 mA, VSEN = 1 V <Driver block> Focus GF+ VREF = 1.5 V 11.3 13.8 16.3 dB '+' / '−' transfer gain relative ratio G+/G− VREF = 1.5 V −1.5 0 +1.5 dB Dead zone converted to INFO pin input IDZFO VREF = 1.5 V −10 0 +10 mV INFO pin input internal resistance R9 VREF = 1.5 V, LDON = 3.0 V 0.8 1.0 1.2 kΩ VREF = INFO = 1.6 V −50 +50 mV Transfer gain '+' Output offset voltage VFOOFF (OFF) 4 Max. output amplitude '+' VFOLM+ PVCC = SVCC = 5 V, VREF = 1.5 V 2.5 3.4 V Max. output amplitude '−' VFOLM− PVCC = SVCC = 5 V, VREF = 1.5 V 2.5 3.4 V LDON pin high-level threshold V10THH VREF = 1.6 V, INFO = 1.8 V 2.0 V LDON pin low-level threshold V10THL VREF = 1.6 V, INFO = 1.8 V 1.0 V VREF pin driver on-off high-level threshold V14THH INFO = 1.8 V 1.25 V VREF pin driver on-off low-level threshold V14THL INFO = 1.8 V 0.75 V ICs for Compact Disc/CD-ROM Player AN8730SB ■ Electrical Characteristics at SVCC = PVCC = 5 V, Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit <Driver block> (continued) Tracking Transfer gain '+' GTR+ 11.3 13.8 16.3 dB '+' / '−' transfer gain relative ratio G+/G− −1.5 0 +1.5 dB Dead zone converted to INTR pin input IDZTR −10 0 +10 mV INTR pin input internal resistance R11 0.8 1.0 1.2 kΩ VTROFF −50 0 +50 mV Output offset voltage (OUT) Max. output amplitude '+' VTRLM+ 2.5 3.4 V Max. output amplitude '−' VTRLM− 2.5 3.4 V Transfer gain '+' GSP+ 17.5 20.0 22.5 dB '+' / '−' transfer gain relative ratio G+/G− −1.7 −0.2 +1.3 dB Dead zone converted to INSP pin input IDZSP −10 0 +10 mV INSP pin input internal resistance R5 0.8 1.0 1.2 kΩ VSPOFF −100 0 +100 mV Spindle Output offset voltage (OUT) Max. output amplitude '+' VSPLM+ 2.5 3.4 V Max. output amplitude '−' VSPLM− 2.5 3.4 V PC pin threshold high-level V6THH 2.0 V PC pin threshold low-level V6THL 1.0 V Transfer gain '+' GTV+ 11.3 13.8 16.3 dB '+' / '−' transfer gain relative ratio G+/G− −1.8 −0.3 +1.2 dB Dead zone converted to INTV pin input IDZTV −10 0 +10 mV INTV pin input internal resistance R4 0.8 1.0 1.2 kΩ VTVOFF −50 0 +50 mV Traverse Output offset voltage (OUT) Max. output amplitude '+' VTVLM+ 2.5 3.4 V Max. output amplitude '−' VTVLM− 2.5 3.4 V TRVSTOP pin threshold high-level V6THH 2.0 V TRVSTOP pin threshold low-level V3THL 1.0 V PWM-comp. TB pin sink current ability ITB VREF = 1.6 V, INFO = 2.1 V 9 12 15 mA VC level shift VC VREF = 1.6 V, INFO = 1.8 V 0.32 0.52 0.62 V 5 AN8730SB ICs for Compact Disc/CD-ROM Player ■ Electrical Characteristics at SVCC = PVCC = 5 V, Ta = 25°C (continued) • 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 Temperature protection circuit Thermal shut-down operating temperature driver operation → stop TON 150 °C Thermal shut-down operating temperature hysteresis width DT 30 °C ■ Application Note • PD Ta curves of SSOP028-P-0375A PD T a 1 600 1 400 Mounted on standard board (glass epoxy: 50 × 50 × t0.8 mm3) Rth(j-a) = 78°C/ W PD = 1 282 mW (25°C) 1 282 Power dissipation PD (mW) 1 200 1 000 800 690 600 Independent IC without a heat sink Rth(j-a) = 145°C/ W PD = 690 mW (25°C) 400 200 0 0 25 50 75 100 125 Ambient temperature Ta (°C) 6 150 ICs for Compact Disc/CD-ROM Player AN8730SB 12 STNBY ■ Application Circuit Example SGND 8 Thermal shut-down Power cut PGND 21 VREF detection 25 3 TRVSTOP BTL TV 24 Absolute value 4 INTV 23 6 PC BTL SP 22 Absolute value 5 INSP 19 10 LDON BTL FO 20 Absolute value 9 Absolute value 11 INFO 17 BTL TR 18 INTR VC 27 PWM TB 26 14 VREF Maximum value 15 VSEN SVCC 13 PVCC 1 16 EMP PWMG 28 2 Triangular wave CLK CT 7 7