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| 1/5 Structure Product Name Device Name : : : Silicon Monolithic Integrated Circuit Power Driver For Compact Disc Players BA5814FM * * * * * 5-ch BTL driver Use of an HSOP-M28 power package can achieve downsizing of the set. A built-in thermal shutdown circuit is installed. A wide dynamic range (6.0V(typ.) when Vcc=8V and RL=8) Incorporate variable regulators for 2 channels. (External PNP Tr. must be installed.) Features : ABSOLUTE MAXIMUM RATINGS (Ta=25C) Parameter Power Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range Symbol Vcc Pd Topr Tstg Limits 13.5 2.2*1 -40 to 85 -55 to 150 Unit V W C C *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. RECOMMENDED OPERATING CONDITIONS (To determine a power supply voltage, the power dissipation must be taken into consideration.) Vcc 4.3 to 13.2 V 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 2/5 ELECTRIC CHARACTERISTICS (Ta=25C, Vcc=8V, PVcc45=5V, BIAS=2.5V, RL=8, unless otherwise noted.) Parameter Circuit Current (at no signal) VMUTE=5V VREITH ISIN IBOP 1.14 10 - 1.2 50 20 1.26 300 V mA nA OUTLINE DIMENSIONS, SYMBOLS (MAX 18.85 include BURR) Product Number (UNIT: mm) REV. A 3/5 APPLICATION CIRCUIT DIAGRAM T.S.D : (Thermal shutdown) Resistance unit : [] PIN NUMBERS, PIN NAMES No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Note: Pin Name RVcc BIAS MUTE1 MUTE2 VIN1 VIN2 VIN3 VCC VO3(-) VO3(+) Description Power supply voltage terminal (REG part) Bias input terminal CH3 mute control terminal CH1, 4, 5 mute control terminal CH1 input terminal CH2 input terminal CH3 input terminal Power supply terminal (PRE part, CH3 POWER part) Driver CH3 negative output Driver CH3 positive output No. 15 16 17 18 19 20 21 22 23 24 Pin Name VO5(+) VO5(-) VO4(+) VO4(-) GND PVcc12 PVcc45 VIN4 VIN5 RGND Description Driver CH5 positive output Driver CH5 negative output Driver CH4 positive output Driver CH4 negative output Ground terminal (PRE part, POWER part) Power supply terminal (CH1, 2 POWER part) Power supply terminal (CH4, 5 POWER part) CH4 input terminal CH5 input terminal Ground terminal (REG part) Regulator 1 output feedback VO2(-) Driver CH2 negative output 25 RE_I1 terminal Regulator 1 external Tr base VO2(+) Driver CH2 positive output 26 RE_O1 connection terminal Regulator 2 output feedback VO1(-) Driver CH1 negative output 27 RE_I2 terminal Regulator 2 external Tr base VO1(+) Driver CH1 positive output 28 RE_O2 connection terminal The positive or negative polarity of driver outputs is determined by the input polarity. (For example, when the voltage on the pin 5 is HIGH, the output voltage on the pin 14 becomes HIGH.) REV. A 4/5 CAUTIONS ON USE (1) Setting the voltage on the Mute terminal to open or 0.5V or less will activate a mute function for the output current. Under conditions of normal use, the Mute terminal should be pulled-up to 1.5V or above. (The pin 3 will mute CH3 while the pin 4 will mute CH1, 4, 5.) (2) On the Bias terminal (pin 2), the applied voltage of 0.7V (Typ.) or less will activate a mute function. Under conditions of normal use, it should be set to 1.1V or above. (3) When the power supply voltage drops to 3.7V (Typ.) or less, the internal circuit will turn OFF and, when recovering to 3.9V (Typ.) or above, the internal circuit will startup. (4) Thermal shutdown (TSD), a low power supply voltage, or a low bias terminal voltage will activate the mute functions on all drivers. While muting, the output voltage of the BTL driver equals to the internal bias voltage (VCC/2). (5) Because an internal resistance of the driver input part is generated at the rate of +1200ppm/C (Typ.), using an external input resistance to control the gain will result in a change of the gain value corresponding to the temperature. (6) The regulator output voltage: VREGO will be the value including the RE_I terminal threshold voltage: VREITH and a variation of the external resistance. Affected by the RE_I terminal input bias current:: IBOP, VREGO is described as the following, where the high-precision external resistance must be selected after careful consideration of IBOP. VREGO=VREITH * R1 + 1 - R1 x I BOP R2 (As for R1 and R2, refer to the application circuit diagram.) (7) The capacitor installed between the regulator output and GND also serves as an anti-oscillation capacitor and therefore, it must show high performance in the temperature characteristics. (8) The power supply and GND terminals of the regulator (pin 1 and 24) also serve as the power supply and GND of the internal constant current source and therefore, they must be connected to the external power supply and GND even when the regulator is not in use. (9) Even though a radiating fin is connected to the GND inside of the package, it must be connected to the external GND. (10) Basically, applying a voltage below the IC sub-potential to any terminals must be avoided. Due to a counter electromotive force of the load, if the output on each driver has dropped to the IC sub-potential (GND) or less, an operation margin must be considered and examined. (11) Short-circuit between output-power supply, output-GND, or output terminals Short-circuits between output pin-VCC, output pin-GND, or output terminals (load short) must be avoided. Make sure that the ICs are installed on the board in proper directions. Mounting the ICs in improper directions may damage them or produce smoke. (12) 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. (13) 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. (14) About GND potential The electric potential of the GND terminal must be kept lowest in the circuitry at any operation states. (15) 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. (16) About operations in a strong electric field When used in a strong electric field, note that a malfunction may occur. (17) ASO When using this IC, the output Tr must be set not to exceed the values specified in the absolute maximum ratings and ASO. REV. A 5/5 (18) 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.) 175 Hysteresis Temperature [C] (typ.) 25 (19) 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. (20) 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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