AN8746

AN8746SA PANASONIC | Alldatasheet

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ICs for Compact Disc/CD-ROM Player AN8746SA PWM driver IC for portable CD player n Overview The AN8746SA is a 4-channel actuator/motor drive IC by DMOS direct PWM method for a portable CD player. n Features

• R ON = 1.8 W (typ.)
• Supply voltage range (Control block: 2.0 V to 3.6 V, power block: 1.2 V to 3.6 V)
• Current at standby (Control block: 1 mA or less, power block: 1 mA or less)
• With an output pin of monitoring 1/2 of the power supply voltage n Applications
• Portable CD player SSOP032-P-0300 Unit: mm n Block Diagram 11 6 (0.5) (0.625) 11.0±0.3 0.1±0.1 1.5±0.2 8.1±0.3 0.65 0.3+0.10 –0.05 0.2+0.10 –0.05 Seating plane Reset TSD VBG V M1 monitor Logic circuit Logic circuit Pre- driver Pre- driver Pre- driver Pre- driver V G limiter H bridge H bridge H bridge H bridge V M4 AC PC Fi4 Ri4 Ro4 PGND4 Fo4 Fo3 PGND3 Ro3 Ri3 Fi3 V GI V GO V M3 V M1 V C MON Fi1 Ri1 Ro1 PGND1 Fo1 Fo2 PGND2 Ro2 Ri2 Fi2 GND N.C. V M2 Logic circuit Logic circuit

AN8746SA ICs for Compact Disc/CD-ROM Player Pin No. Symbol Description 17 V M3 Ch.3 power supply

18 V GO Gate voltage clamp output

19 V GI Gate voltage input pin

20 Fi3 Ch. 3 forward direction input pin 21 Ri3 Ch. 3 reverse direction input pin 22 Ro3 Ch. 3 reverse direction output pin 23 PGND3 Ch. 3 power ground 24 Fo3 Ch. 3 forward direction output pin 25 Fo4 Ch. 4 forward direction output pin 26 PGND4 Ch. 4 power ground 27 Ro4 Ch. 4 reverse direction output pin 28 Ri4 Ch. 4 reverse direction input pin 29 Fi4 Ch. 4 forward direction input pin

30 PC Power cut pin

31 AC All cut-off pin

32 V M4 Ch. 4 power supply n Pin Descriptions Pin No. Symbol Description 1V M1 Ch. 1 power supply 2V C Control circuit power supply

3 MON VM1 monitor

4 Fil Ch. 1 forward direction input pin 5 Ril Ch. 1 reverse direction input pin 6 Rol Ch. 1 reverse direction output pin 7 PGND1 Ch. 1 power ground 8 Fo1 Ch. 1 forward direction output pin 9 Fo2 Ch. 2 forward direction output pin 10 PGND2 Ch. 2 power ground 11 Ro2 Ch. 2 reverse direction output pin 12 Ri2 Ch. 2 reverse direction intput pin 13 Fi2 Ch. 2 forward direction input pin

14 GND Control circuit ground

15 N.C. ¾ 16 V M2 Ch. 2 power supply Parameter Symbol Range Unit Supply voltage V C 2.0 to 2.4 to 3.6 V V M 1.2 to 2.4 to 3.6 V GI V M +3.5 to 7.0 to 8.0 Signal input voltage V IN 0 to VC V n Recommended Operating Range Parameter Symbol Rating Unit Supply voltage V C 5V V M 7 V GI 8.2 Supply current I DD 500 mA Power dissipation *2 PD 400 mW Operating ambient temperature *1 Topr -30 to +75 °C Storage temperature *1 T stg -55 to +150 °C n Absolute Maximum Ratings Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. *2: Use within the range of PD = 390 mW or less at Ta = 75°C, following the allowable power dissipation characteristic curve of "n Application Notes".

ICs for Compact Disc/CD-ROM Player AN8746SA n Electrical Characteristics at VC = 2.4 V, VM12 = VM34 = 2.4 V, VGI = 7.0 V, AC = PC = 2.4 V, RL = 8 W , Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Power supply current at mute IMO PC = 0 V, AC = VC = 2.4 V or ¾¾ 1 mA (at PC = L or VC = L) *1 V C = PC = AC = 0 V Control supply current at all cut ICO AC = L, PC = L ¾¾ 1 mA (at AC = L or PC = L) Control supply current at operating *2 IC AC = PC = VC = 2.4 V ¾ 0.5 1 mA Pre-driver supply current I GO AC = 0 V ¾¾ 1 mA at all cut (at AC = L) *2 Pre-driver supply current I G AC = PC = VC = 2.4 V ¾ 0.5 1 mA at operation (at VGI = 7 V) *2 PWM input voltage high-level VINH AC = PC = VC = 2.4 V V C - 0.6 ¾¾ V Fil to Fi4 = Ril to Ri4 = H PWM input voltage low-level V INL AC = PC = VC = 2.4 V ¾¾ 0.6 V Fil to Fi4 = Ril to Ri4 = L PWM input current high-level IINH AC = PC = VC = 2.4 V ¾¾ 1 mA Fil to Fi4 = Ril to Ri4 = H PWM input current low-level I INL AC = PC = VC = 2.4 V -1 ¾¾ m A Fil to Fi4 = Ril to Ri4 = L Driver on resistance R ON AC = PC = VC = 2.4 V ¾ 1.8 2.5 W (upper and lower) Output propagation delay time tDr AC = PC = VC = 2.4 V ¾ 0.2 1 ms at rising *2 Output propagation delay time tDf AC = PC = VC = 2.4 V ¾ 0.2 1 ms at falling *2 Output propagation delay timeDtD AC = PC = VC = 2.4 V - 0.3 ¾ 0.3 ms difference tDr-tDf Minimum input pulse width *3 tmin AC = PC = VC = 2.4 V 0.3 ¾¾ m s V M monitor output voltage widthV MON AC = PC = VC = 2.4 V 1.1 1.2 1.3 V V M monitor output gain G MON AC = PC = VC = 2.4 V 0.45 0.5 0.55 ¾ Power output pin flow-out/in IHZ AC = PC = VC = 0 V -50 ¾ 50 mA current at low VC *1 V M monitor output voltage at LMON V M12 = VM34 = 5.0 V 1.7 1.9 2.1 V V C limit AC = PC = VC = 1.9 V Note) *1: AC pin and PC pin are connected to VC pin via a protective diode. AC pin and PC pin must be set to 0 V at VC = 0 V to avoid excessive flow-in current. *2: Measure at f = 44.1 kHz and in duty ratio = 50%. *3: Measure at f = 44.1 kHz. Output pulse width must be ‡ tmin /2.

AN8746SA ICs for Compact Disc/CD-ROM Player n Electrical Characteristics at VC = 2.4 V, VM12 = VM34 = 2.4 V, VGI = 7.0 V, AC = PC = 2.4 V, RL = 8 W , 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 Thermal protection Thermal protection operating TTHD ¾ 145 ¾° C temperature Thermal protection hysteresisDTTHD ¾ 20 ¾° C width n Usage Notes 1. Care should be taken so as not to cause any of the following conditions on use of this IC. If the following conditions come up, the IC is likely to break down or to be smoking. Short-circuit between output pins Short-circuit between output pin and GND Short-circuit between output pin and power supply (Output pin refers to any of those Fo1 (pin 8), Ro1 (pin 6), Fo2 (pin 9), Ro2 (pin 11), Fo3 (pin 24), Ro3 (pin 22), Fo4 (pin 25), Ro4 (pin 27). GND refers to any of those GND (pin 14), PGND1 (pin 7), PGND2 (pin 10), PGND3 (pin 23), PGND4 (pin 26). Power supply refers to any of those V C (pin 2), VGI (pin 19), VM1 (pin 1), VM2 (pin16), V M3 (pin 17), VM4 (pin 32). 2. V M1 monitor pin (pin 3) outputs approximately one half of VM1 voltage and its upper limit is VC supply voltage. This is meant to prevent the DSP connected to this Pin from damage when the voltage exceeding an operating supply voltage range is inputted to the V M1 pin. On use of this pin, therefore, note that no value exceeding VC is outputted. n Application Notes 1. PD ¾ Ta curves of SSOP032-P-0300 PD ¾ Ta Power dissipation PD (W) Ambient temperature Ta (°C) 0.000 02 5 5 0 7 5 100 125 150 1.400 1.288 1.200 1.000 0.800 0.667 0.600 0.400 0.200 Independent IC without a heat sink R th(j-a) = 187.2°C/W Mounted on standard board (glass epoxy: 50 mm · 50 mm · t0.8 mm) R th(j-a) = 97.0°C/W

ICs for Compact Disc/CD-ROM Player AN8746SA n Application Notes 2. Logic table of driver n Application Circuit Example V C PC Fil to Fi4 Ril to Ri4 Fol to Fo3 Rol to Ro3 Fo4 Ro4 HH L L L L LL HH L H L H LH HH H L H L LL HH H H L L HL HL X X L L LL L X X X Hi-Z Hi-Z Hi-Z Hi-Z Note) AC = H on the above logic table. H stands for VC power supply potential, L for GND potential (0 V) and X for H or L. Hi-Z indicates that the driver output pin becomes a high impedance state. Logic input pin must not be left open. And do not apply any other voltages than H or L.M M V GI = 7 V V M = 2.4 VV C = 2.4 V/0 V DSP Û Micro- computer Û DSP Û Reset TSD VBG V M1 monitor Logic circuit Logic circuit Pre- driver Pre- driver Pre- driver Pre- driver V G limiter H bridge H bridge H bridge H bridge V M4 AC PC Fi4 Ri4 Ro4 PGND4 Fo4 Fo3 PGND3 Ro3 Ri3 Fi3 V GI V GO V M3 V M1 V C MON Fi1 Ri1 Ro1 PGND1 Fo1 Fo2 PGND2 Ro2 Ri2 Fi2 GND N.C. V M2 Logic circuit Logic circuit