AN8746SA

ICs for Compact Disc/CD-ROM Player AN8746SA PWM driver IC for portable CD player s Overview The AN8746SA is a 4-channel actuator/motor drive IC by DMOS direct PWM method for a portable CD player. 11.0±0.3 32 17 Unit: mm s Features • RON = 1.8 Ω (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 µA or less, power block: 1 µA or less) • With an output pin of monitoring 1/2 of the power supply voltage 0.65±0.10 1.5±0.2 1 16 6.1±0.3 8.1±0.3 (0.5) 0.2+0.10 –0.05 (0.625) 0.65 0.3 –0.05 Seating plane SSOP032-P-0300 s Applications • Portable CD player s Block Diagram PGND4 PGND3 0.1±0.1 +0.10 0.65±0.10 VGO 18 15 N.C. VM4 32 31 30 29 28 27 26 25 24 23 22 21 20 19 Logic circuit Reset TSD Predriver H bridge H bridge Logic circuit Predriver VG limiter VBG Predriver VM1 monitor Logic circuit H bridge H bridge Predriver Logic circuit 10 11 12 13 14 MON Fi1 Ri1 Ro1 PGND1 Fo1 Fo2 PGND2 Ro2 Ri2 Fi2 GND VM1 VC VM2 16 1 2 3 4 5 6 7 8 9 17 VM3 Ro4 Ro3 VGI Fo4 Fo3 Ri4 Ri3 AC Fi4 Fi3 PC 1 AN8746SA s Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol VM1 VC MON Fil Ril Rol PGND1 Fo1 Fo2 PGND2 Ro2 Ri2 Fi2 GND N.C. VM2 Description Ch. 1 power supply Control circuit power supply VM1 monitor Ch. 1 forward direction input pin Ch. 1 reverse direction input pin Ch. 1 reverse direction output pin Ch. 1 power ground Ch. 1 forward direction output pin Ch. 2 forward direction output pin Ch. 2 power ground Ch. 2 reverse direction output pin Ch. 2 reverse direction intput pin Ch. 2 forward direction input pin Control circuit ground  Ch. 2 power supply ICs for Compact Disc/CD-ROM Player Pin No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Symbol VM3 VGO VGI Fi3 Ri3 Ro3 PGND3 Fo3 Fo4 PGND4 Ro4 Ri4 Fi4 PC AC VM4 Description Ch.3 power supply Gate voltage clamp output Gate voltage input pin Ch. 3 forward direction input pin Ch. 3 reverse direction input pin Ch. 3 reverse direction output pin Ch. 3 power ground Ch. 3 forward direction output pin Ch. 4 forward direction output pin Ch. 4 power ground Ch. 4 reverse direction output pin Ch. 4 reverse direction input pin Ch. 4 forward direction input pin Power cut pin All cut-off pin Ch. 4 power supply s Absolute Maximum Ratings Parameter Supply voltage Symbol VC VM VGI Supply current Power dissipation *2 *1 Rating 5 7 8.2 500 400 −30 to +75 −55 to +150 Unit V IDD PD Topr Tstg *1 mA mW °C °C Operating ambient temperature Storage temperature 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 "s Application Notes". s Recommended Operating Range Parameter Supply voltage Symbol VC VM VGI Signal input voltage VIN Range 2.0 to 2.4 to 3.6 1.2 to 2.4 to 3.6 VM +3.5 to 7.0 to 8.0 0 to VC V Unit V 2 ICs for Compact Disc/CD-ROM Player AN8746SA s Electrical Characteristics at VC = 2.4 V, VM12 = VM34 = 2.4 V, VGI = 7.0 V, AC = PC = 2.4 V, RL = 8 Ω, Ta = 25°C Parameter Power supply current at mute (at PC = L or VC = L) *1 Control supply current at all cut (at AC = L or PC = L) Control supply current at operating *2 Pre-driver supply current at all cut (at AC = L) *2 Pre-driver supply current at operation (at VGI = 7 V) *2 PWM input voltage high-level PWM input voltage low-level PWM input current high-level PWM input current low-level Driver on resistance (upper and lower) Output propagation delay time at rising *2 Output propagation delay time at falling *2 Output propagation delay time difference tDr-tDf Minimum input pulse width *3 VM monitor output voltage width VM monitor output gain Power output pin flow-out/in current at low VC *1 VM monitor output voltage at VC limit Symbol IMO ICO IC IGO IG VINH VINL IINH IINL RON tDr tDf ∆t D tmin VMON GMON IHZ Conditions PC = 0 V, AC = VC = 2.4 V or VC = PC = AC = 0 V AC = L, PC = L AC = PC = VC = 2.4 V AC = 0 V AC = PC = VC = 2.4 V AC = PC = VC = 2.4 V Fil to Fi4 = Ril to Ri4 = H AC = PC = VC = 2.4 V Fil to Fi4 = Ril to Ri4 = L AC = PC = VC = 2.4 V Fil to Fi4 = Ril to Ri4 = H AC = PC = VC = 2.4 V Fil to Fi4 = Ril to Ri4 = L AC = PC = VC = 2.4 V AC = PC = VC = 2.4 V AC = PC = VC = 2.4 V AC = PC = VC = 2.4 V AC = PC = VC = 2.4 V AC = PC = VC = 2.4 V AC = PC = VC = 2.4 V AC = PC = VC = 0 V Min      VC − 0.6   −1    − 0.3 0.3 1.1 0.45 −50 1.7 Typ   0.5  0.5     1.8 0.2 0.2   1.2 0.5  1.9 Max 1 1 1 1 1  0.6 1  2.5 1 1 0.3  1.3 0.55 50 2.1 Unit µA µA mA µA mA V V µA µA Ω µs µs µs µs V  µA V LMON VM12 = VM34 = 5.0 V 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. 3 AN8746SA ICs for Compact Disc/CD-ROM Player s Electrical Characteristics at VC = 2.4 V, VM12 = VM34 = 2.4 V, VGI = 7.0 V, AC = PC = 2.4 V, RL = 8 Ω, 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 Thermal protection Thermal protection operating temperature Thermal protection hysteresis width Symbol Conditions Min   Typ Max   Unit °C °C TTHD ∆TTHD 145 20 s 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 VC (pin 2), VGI (pin 19), VM1 (pin 1), VM2 (pin16), VM3 (pin 17), VM4 (pin 32). 2. VM1 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 VM1 pin. On use of this pin, therefore, note that no value exceeding VC is outputted. s Application Notes 1. PD  Ta curves of SSOP032-P-0300 PD  T a 1.400 1.288 1.200 Mounted on standard board (glass epoxy: 50 mm × 50 mm × t0.8 mm) Rth(j-a) = 97.0°C/W Power dissipation PD (W) 1.000 0.800 0.667 0.600 Independent IC without a heat sink Rth(j-a) = 187.2°C/W 0.400 0.200 0.000 0 25 50 75 100 125 150 Ambient temperature Ta (°C) 4 ICs for Compact Disc/CD-ROM Player s Application Notes 2. Logic table of driver VC H H H H H L PC H H H H L X Fil to Fi4 L L H H X X Ril to Ri4 L H L H X X Fol to Fo3 L L H L L Hi-Z Rol to Ro3 L H L L L Hi-Z AN8746SA Fo4 L L L H L Hi-Z Ro4 L H L L L 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. s Application Circuit Example DSP ⇔ Microcomputer ⇔ M M VGI = 7 V 26 PGND4 23 PGND3 18 VGO 15 N.C. 32 VM4 Logic circuit Reset TSD Predriver H bridge H bridge Logic circuit Predriver VG limiter VBG Predriver VM1 monitor Logic circuit H bridge H bridge Predriver Logic circuit PGND2 10 Ro2 11 Ri2 12 Fi2 13 GND 14 VM1 1 MON 3 PGND1 7 DSP ⇔ VC = 2.4 V/0 V VM = 2.4 V VM2 16 5 VC 2 Fi1 4 Ri1 5 Ro1 6 Fo1 8 Fo2 9 17 VM3 27 Ro4 22 Ro3 19 VGI 25 Fo4 24 Fo3 28 Ri4 21 Ri3 31 AC 29 Fi4 20 Fi3 30 PC