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| 1/4 Structure Product Name Device Name : : : Silicon Monolithic Integrated Circuit Power Driver For Compact Disc Players BA5947FM * 4-ch BTL driver * Use of an HSOP-M28 power package can achieve downsizing of the set. * 3 channels are directly connected to the PWM input. (with a built-in primary filter) * For CH4, the input terminal can be switched by the SW terminal. * A wide dynamic range (5.4V(typ.) when PreVcc=PowVcc=8V and RL=8) * A built-in thermal shutdown circuit is installed. * PreVcc, PowVcc of CH1 and CH2, and PowVcc of CH3 and CH4 are provided with power supplies independently and an efficient power supply voltage design can be achieved. * Using an external mute terminal, the output current can be muted. * A built-in general operational amplifier installed. Features : ABSOLUTE MAXIMUM RATINGS (Ta=25C) Parameter Symbol Power Supply Voltage Vcc Power Dissipation Pd Operating Temperature Topr Range Storage Temperature Tstg Range Limits 13.5 2.2 *1 -35 to 85 -55 to 150 Unit V W C C RECOMMENDED OPERATING CONDITIONS (To determine a power supply voltage, the power dissipation must be taken into consideration.) PreVcc PowVcc 6.0 to 13.2 V 6.0 to PreVcc *1 When mounted on the glass/epoxy board with the size: 70 mmx70 mm, the thickness: 1.6 mm, and the rate of copper foil occupancy area: 3% or less. Over Ta=25C, derating at the rate of 17.6mW/C. This product has not been checked for the strategic materials (or service) defined in the Foreign Exchange and Foreign Trade Control Low of Japan so that a verification work is required before exporting it. Not designed for radiation resistance. REV. A 2/4 ELECTRIC CHARACTERISTICS (Ta=25C, Vcc=8V, RL=8, Vb=VOP+=1.75V, unless otherwise noted.) Parameter Symbol Consumption Current (at no IQ signal) internal Vref Terminal Voltage VREF Mute OFF Voltage VMON Mute ON Voltage VMOFF Drivers not a spindle type (CH1, 2, 3) Input High-level Voltage VIH Input Low-level Voltage VIL Input High-level Current IIH Input Low-level Current F IILF side Input Low-level Current R IILR side Output Offset Voltage VOO Maximum Output Amplitude VOM Spindle Drivers (CH4) Input Bias Current IB Output Offset VOO4 Maximum Output Amplitude VOM Voltage Gain 1 GVC1 Voltage Gain 2 Analog SW Input Input High-level Voltage Input Low-level Voltage Input High-level Current Input Low-level Current Operational Amplifier Offset Voltage Input Bias Current High-level Output Voltage Low-level Output Voltage Output Driving Current Sink Output Driving Current Source Open-loop Voltage Gain Slew Rate GVC2 MIN 3.40 1.9 1.9 -0.3 170 -10 -50 -30 4.4 -50 9.3 27.8 TYP 17.0 3.70 310 5.0 10 5.4 11.3 31.3 MAX 25.0 4.00 0.5 VCC 0.5 450 0 0 30 5.6 300 50 13.3 34.8 Unit Condition mA no load applied V V V V V A A A Vf=Vr=5V Vf=0V Vr=0V mV V Vf=5V,Vr=0V nA mV VIN4=Vb V Vb=4V dB PIN24 and PIN25 are shorted. dB PIN24 and PIN25 are shorted. V V A A mV nA V V mA mA dB VIN=-60dBV,1KHz V/s f=50kHz,2Vppsquare wave, Vb=4V VIHSW VILSW IIHSW IILSW VOFOP IBOP VOHOP VOLOP Isink source GVO SR 1.9 -0.3 -10 -5 7.0 2.0 7.0 - 60 0 0 10 9.0 13.0 65 0.5 VCC 0.5 90 10 5 300 0.2 - VSW=3.5V VSW=0V OUTLINE DIMENSIONS, SYMBOLS (MAX 18.85 include BURR) (UNIT:mm) REV. A 3/4 BLOCK DIAGRAM PIN NUMBERS, PIN NAMES No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Pin Name OPINOPIN+ SW CH1FIN CH1RIN CH2FIN CH2RIN GND VREFIN POWVCC CH2OUTR CH2OUTF CH1OUTR CH1OUTF Description operational amplifier negative input terminal operational amplifier positive input terminal CH4 input selecting switch terminal CH1PWM forward input CH1PWM reverse input CH2PWM forward input CH2PWM reverse input GND internal Vref voltage input terminal power part power supply voltage (CH1, 2) CH2 reverse output terminal CH2 forward output terminal CH1 reverse output terminal CH1 forward output terminal No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Pin Name CH4OUTR CH4OUTF CH3OUTF CH3OUTR POWVCC MUTE GND CH3RIN CH3FIN CH4IN CH4CAPA OUTVREF OPOUT PREVCC Description CH4 reverse output terminal CH4 forward output terminal CH3 forward output terminal CH3 reverse output terminal power part power supply voltage (CH3, 4) mute terminal GND CH3PWM reverse input CH3PWM forward input CH4 input terminal CH4 external CAPA connection terminal CH4 external reference voltage input terminal operational amplifier output terminal pre-stage power supply voltage * Polarities for the F output and the R output. For CH4, when PIN24 is High, PIN16 outputs High. REV. A 4/4 CAUTIONS ON USE (1) Thermal shutdown or mute ON will activate the mute function only on the driver part. (2) Even though a radiating fin is connected to the GND inside of the package, it must be connected to the external GND. (3) About absolute maximum ratings Exceeding the absolute maximum ratings, such as the applied voltage or the operating temperature range, may cause permanent device damage. As these cases cannot be limited to the broken short mode or the open mode, if a special mode where the absolute maximum ratings may be exceeded is assumed, it is recommended to take mechanical safety measures such as attaching fuses. (4) About power supply lines As a measure against the back current regenerated by a counter electromotive force of the motor, a capacitor to be used as a regenerated-current path can be installed between the power supply and GND and its capacitance value should be determined after careful check that any problems, for example, a leak capacitance of the electrolytic capacitor at low temperature, are not found in various characteristics. (5) About GND potential The electric potential of the GND terminal must be kept lowest in the circuitry at any operation states. (6) About thermal design With consideration of the power dissipation (Pd) under conditions of actual use, a thermal design provided with an enough margin should be done. (7) About operations in a strong electric field When used in a strong electric field, note that a malfunction may occur. (8) ASO When using this IC, the output Tr must be set not to exceed the values specified in the absolute maximum ratings and ASO. (9) Thermal shutdown circuit This IC incorporates a thermal shutdown circuit (TSD circuit). When the chip temperature reaches the value shown below, the coil output to the motor will be set to open. The thermal shutdown circuit is designed only to shut off the IC from a thermal runaway and not intended to protect or guarantee the entire IC functions. Therefore, users cannot assume that the TSD circuit once activated can be used continuously in the subsequent operations. TSD ON Temperature [C] (typ.) 180 Hysteresis Temperature [C] (typ.) 20 (10) About earth wiring patterns When a small signal GND and a large current GND are provided, it is recommended that the large current GND pattern and the small signal GND pattern should be separated and grounded at a single point of the reference point of the set in order to prevent the voltage of the small signal GND from being affected by a voltage change caused by the resistance of the pattern wiring and the large current. Make sure that the GND wiring patterns of the external components will not change, too. (11) This IC is a monolithic IC which has a P+ isolations and P substrate to isolate elements each other. This P layer and an N layer in each element form a PN junction to construct various parasitic elements. Due to the IC structure, the parasitic elements are inevitably created by the potential relationship. Activation of the parasitic elements can cause interference between circuits and may result in a malfunction or, consequently, a fatal damage. Therefore, make sure that the IC must not be used under conditions that may activate the parasitic elements, for example, applying the lower voltage than the ground level (GND, P substrate) to the input terminals. Note that, while not applying the power supply voltage to the IC, any voltage must not be applied to the input terminals. In addition, do not apply the voltage to input terminals without applying the power supply voltage to the IC. Also while applying the power supply voltage, each input terminal must be the power supply voltage or less; or within the guaranteed values in the electric characteristics. REV. A Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of which would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM cannot be held responsible for any damages arising from the use of the products under conditions out of the range of the specifications or due to non-compliance with the NOTES specified in this catalog. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact your nearest sales office. ROHM Customer Support System www.rohm.com Copyright (c) 2007 ROHM CO.,LTD. THE AMERICAS / EUPOPE / ASIA / JAPAN Contact us : webmaster@ rohm.co. jp 21, Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan TEL : +81-75-311-2121 FAX : +81-75-315-0172 Appendix1-Rev2.0 |
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