전자부품 데이터시트 검색엔진 |
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BA5983FM 데이터시트(PDF) 4 Page - Rohm |
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BA5983FM 데이터시트(HTML) 4 Page - Rohm |
4 / 6 page 4/5 REV. A CAUTIONS ON USE (1) When the voltage applied on the Bias terminal (pin 1) has dropped to 0.7V (Typ.) or less, the mute function will be activated. Under conditions of normal use, it should be set to 1.3V or above. (2) When the power supply voltage drops to 3.8V (Typ.) or less, the internal circuit will be OFF and, when recovering to 4.0V (Typ.) or above, the circuit will startup again. (3) Thermal shutdown (TSD), bias terminal voltage drop or power supply voltage drop will activate the mute functions for the circuits in all channels, where the output terminals will show the value of the internal bias voltage (Vcc/2). (4) Setting the Standby terminal to open or 0.5V or less leads all the circuits in the channel to the standby mode. Under conditions of normal use, the Standby terminal should be pulled-up to 2V or above. (5) Setting both two Standby terminals to open or 0.5V or less allows the circuit current to be in the standby mode. The switched threshold voltage is approximately 1.4V. (6) Vcc of the pre part must be provided with the same voltage as Vcc of the power part or higher. (7) The source current of the pre-stage OP-amp is a constant current and the input resistance of the next-stage driver: 10k Ω is also internally connected as a load. Careful consideration must be given when determining the external load resistance value of the OP-amp. (8) Even though a radiating fin is connected to the GND inside of the package, it must be connected to the external GND. (9) 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. (10) 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. (11) About GND potential The electric potential of the GND terminal must be kept lowest in the circuitry at any operation states. (12) 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. (13) About operations in a strong electric field When used in a strong electric field, note that a malfunction may occur. (14) ASO When using this IC, the output Tr must be set not to exceed the values specified in the absolute maximum ratings and ASO. (15) 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.) Hysteresis Temperature [ °C] (typ.) 175 25 (16) 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. |
유사한 부품 번호 - BA5983FM_1 |
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유사한 설명 - BA5983FM_1 |
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