AN8730SB

AN8730SB PANASONIC

Document overview

• Manufacturer or author: Provided By digicamel.com
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Technical content

ICs for Compact Disc/CD-ROM Player AN8730SB 4-channel driver IC for optical disk n Overview The AN8730SB is a 4-channel driver IC, which can operate in a low voltage, employing the low power con- sumption type H-bridge system with a switching regula- tor. It is especially suited for a portable CD/MD player. n Features

• Low power consumption due to PWM control of power supply
• Wide output D-range independent of the reference volt- age of the system
• Enable to set input/output gain by an external resistor
• Independent power on/off for 2 channels and simulta- neous on/off for other 2 channels as well
• Battery voltage detection circuit built-in
• Thermal shut-down circuit (with hysteresis) built-in n Applications
• Portable CD/MD Unit: mm SSOP028 P-0375A 0.3±0.1 0.1±0.1 (0.4) 2.05±0.2 0.9±0.1 0.9±0.1 0.2+0.1 –0.05 11.6±0.3 9.3±0.3 7.2±0.3 0.8

AN8730SB ICs for Compact Disc/CD-ROM Player n Block Diagram

12 STNBY

V SEN V REF BTL BTL BTL BTL PWM CLK PWMG PV CC SV CC Power cut Maximum value Absolute value Triangular wave Thermal shut-down V REF detection Absolute value Absolute value Absolute value

ICs for Compact Disc/CD-ROM Player AN8730SB n Pin Descriptions n Absolute Maximum Ratings Parameter Symbol Rating Unit Supply voltage PV CC 15 V SV CC 6 V C 9 Supply voltage range PV CC - 0.3 to +15.0 V SV CC - 0.3 to +6.0 Supply current I CC ¾ mA Supply current 1 I SVCC 50 mA Supply current 2 I PVCC 100 mA Drive output current I O 500 mA Power dissipation *2 PD 345 mW Max. application voltage to VSEN pin V 10max 15.0 V Operating ambient temperature *1 T opr -25 to +75 °C Storage temperature *1 Tstg -55 to +125 °C 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 "n Application Note" at mounting on PCB. Pin No. Symbol Description

15 V SEN Empty detection input pin

16 EMP Empty detection output pin

17 TR - Driver output pin

18 TR + Driver output pin

19 FO - Driver output pin

20 FO + Driver output pin

21 PGND Ground pin

22 SP + Driver output pin

23 SP - Driver output pin

24 TV + Driver output pin

25 TV - Driver output pin

26 TB PWM circuit output pin

27 V C Drive supply voltage pin

28 PWMG PWM loop gain adjustment pin

Pin No. Symbol Description 1P V CC Supply voltage pin 2 CLK External sync. input pin

3 TRVSTOP Dr iver on-off control pin

4 INTV Driver input pin

5 INSP Driver input pin

6 PC Driver on-off control pin

7 CT Triangular wave oscillation pin

8 SGND Ground pin

9 INFO Driver input pin

10 LDON Driver on-off control pin

11 INTR Driver input pin

12 STNBY Standby mode input pin

13 SV CC Supply voltage pin

14 V REF V REF input pin

n Recommended Operating Range Parameter Symbol Range Unit Supply voltage PV CC 2.7 to 14.0 V SV CC 2.7 to 5.5

AN8730SB ICs for Compact Disc/CD-ROM Player n Electrical Characteristics at SVCC = PVCC = 5 V, Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit <Common block> Supply current of SVCC at no load I13Q PV CC = SVCC = 5 V, VREF = 1.5 V ¾ 4.2 7.0 mA In standby mode I 13S PV CC = SVCC = 5 V, VREF = 1.5 V ¾ 0.8 2 mA supply current of SVCC at no load STNBY = 0 V Supply current of PVCC at no load I 1Q PV CC = SVCC = 5 V, VREF = 1.5 V ¾ 3.4 5.5 mA V C leak current I VCL V C = 9 V ¾¾ 10 mA Free-run oscillation frequency f 3F C T = 150 pF, 470 kW¾ ¾ 165 kHz at CT pin CKL pin block CLK pin input threshold VTHH V 2THH fIN = 88.2 kHz 2.0 ¾¾ V CLK pin input threshold VTHL V 2THL fIN = 88.2 kHz ¾¾ 0.8 V Empty detection block EMP pin detection voltage V 16TH1 1.7 1.85 1.9 V Hysteresis width from EMP pin V 16H 50 80 110 mV empty detection to recovery EMP pin output voltage V 16O IEMP = +1.0 mA, VSEN = 1 V ¾¾ 0.5 V V SEN pin input resistance R 15 21.5 25 28.5 k W <Driver block> Focus Transfer gain '+'G F + V REF = 1.5 V 11.3 13.8 16.3 dB '+' / '-' transfer gain relative ratio G+/G- V REF = 1.5 V -1.5 0 +1.5 dB Dead zone converted to INFO pin inputIDZFO V REF = 1.5 V -10 0 +10 mV Output offset voltage V FOOFF V REF = INFO = 1.6 V -50 ¾+ 50 mV (OFF) Max. output amplitude '+'V FOLM + PV CC = SVCC = 5 V, VREF = 1.5 V 2.5 3.4 ¾ V Max. output amplitude '-'V FOLM - PV CC = SVCC = 5 V, VREF = 1.5 V 2.5 3.4 ¾ V LDON pin high-level threshold V 10THH V REF = 1.6 V, INFO = 1.8 V 2.0 ¾¾ V LDON pin low-level threshold V 10THL V REF = 1.6 V, INFO = 1.8 V ¾¾ 1.0 V V REF pin driver on-off V 14THH INFO = 1.8 V 1.25 ¾¾ V high-level threshold V REF pin driver on-off V 14THL INFO = 1.8 V ¾¾ 0.75 V low-level threshold n Recommended Operating Range Parameter Symbol Range Unit Supply voltage PV CC 2.7 to 14.0 V SV CC 2.7 to 5.5

ICs for Compact Disc/CD-ROM Player AN8730SB n 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 inputIDZTR -10 0 +10 mV INTR pin input internal resistance R11 0.8 1.0 1.2 k W Output offset voltage V TROFF -50 0 +50 mV (OUT) Max. output amplitude '+'V TRLM + 2.5 3.4 ¾ V Max. output amplitude '-'V TRLM - 2.5 3.4 ¾ V Spindle 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 inputIDZSP -10 0 +10 mV INSP pin input internal resistance R5 0.8 1.0 1.2 k W Output offset voltage V SPOFF -100 0 +100 mV (OUT) Max. output amplitude '+'V SPLM + 2.5 3.4 ¾ V Max. output amplitude '-'V SPLM - 2.5 3.4 ¾ V PC pin threshold high-level V 6THH 2.0 ¾¾ V PC pin threshold low-level V 6THL ¾¾ 1.0 V Traverse 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 inputIDZTV -10 0 +10 mV INTV pin input internal resistance R4 0.8 1.0 1.2 k W Output offset voltage V TVOFF -50 0 +50 mV (OUT) Max. output amplitude '+'V TVLM + 2.5 3.4 ¾ V Max. output amplitude '-'V TVLM - 2.5 3.4 ¾ V TRVSTOP pin threshold high-level V6THH 2.0 ¾¾ V TRVSTOP pin threshold low-level V3THL ¾¾ 1.0 V PWM-comp. TB pin sink current ability I TB V REF = 1.6 V, INFO = 2.1 V 9 12 15 mA

AN8730SB ICs for Compact Disc/CD-ROM Player n 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 TON ¾ 150 ¾° C driver operation fi stop Thermal shut-down operating temperature DT ¾ 30 ¾° C hysteresis width n Application Note
• PD ¾ Ta curves of SSOP028-P-0375A PD ¾ Ta Ambient temperature Ta (°C) Power dissipation PD (mW) 200 690 1 600 1 282 25 50 75 100 125 150 400 600 800 1 000 1 200 1 400 Mounted on standard board (glass epoxy: 50 · 50 · t0.8 mm3) R th(j-a) = 78°C/ W PD = 1 282 mW (25°C) Independent IC without a heat sink R th(j-a) = 145°C/ W PD = 690 mW (25°C)

ICs for Compact Disc/CD-ROM Player AN8730SB n Application Circuit Example BTL BTL BTL BTL PWM Power cut Maximum value Absolute value Triangular wave Thermal shut-down V REF detection Absolute value Absolute value Absolute value SGND PGND TV SP FO TR STNBY V C TB CT TRVSTOP INTV PC INSP LDON INFO INTR V REF V SEN EMP CLK PWMG PV CC SV CC