поискавой системы для электроныых деталей |
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BA6247FP-Y датащи(PDF) 13 Page - Rohm |
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BA6247FP-Y датащи(HTML) 13 Page - Rohm |
13 / 16 page Technical Note 13/15 BA6246, BA6246N, BA6247FP-Y, BA6239A, BA6238A, BA6238AN www.rohm.com 2009.04 - Rev.A ○ c 2009 ROHM Co., Ltd. All rights reserved. Interfaces (BA6246, BA6246N, BA6247FP-Y) (BA6239A) (BA6238A, BA6238AN) Fig. 38 IN1, IN2, IN3 Fig.39 VCC1, VCC2, OUT1, OUT2, OUT3, VR, GND Notes for use 1) Absolute maximum ratings Devices may be destroyed when supply voltage or operating temperature exceeds the absolute maximum rating. Because the cause of this damage cannot be identified as, for example, a short circuit or an open circuit, it is important to consider circuit protection measures – such as adding fuses – if any value in excess of absolute maximum ratings is to be implemented. 2) Connecting the power supply connector backward Connecting the power supply in reverse polarity can damage the IC. Take precautions against reverse polarity when connecting the power supply lines, such as adding an external direction diode. 3) Power supply lines Return current generated by the motor’s Back-EMF requires countermeasures, such as providing a return current path by inserting capacitors across the power supply and GND (10µF, ceramic capacitor is recommended). In this case, it is important to conclusively confirm that none of the negative effects sometimes seen with electrolytic capacitors – including a capacitance drop at low temperatures - occurs. Also, the connected power supply must have sufficient current absorbing capability. Otherwise, the regenerated current will increase voltage on the power supply line, which may in turn cause problems with the product, including peripheral circuits exceeding the absolute maximum rating. To help protect against damage or degradation, physical safety measures should be taken, such as providing a voltage clamping diode across the power supply and GND. 4) Electrical potential at GND Keep the GND terminal potential to the minimum potential under any operating condition. In addition, check to determine whether there is any terminal that provides voltage below GND, including the voltage during transient phenomena. When both a small signal GND and high current GND are present, single-point grounding (at the set’s reference point) is recommended, in order to separate the small signal and high current GND, and to ensure that voltage changes due to the wiring resistance and high current do not affect the voltage at the small signal GND. In the same way, care must be taken to avoid changes in the GND wire pattern in any external connected component. 5) Thermal design Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) under actual operating conditions. 6) Inter-pin shorts and mounting errors Use caution when positioning the IC for mounting on printed circuit boards. The IC may be damaged if there is any connection error, or if pins are shorted together. VCC2 VCC1 OUT1 OUT2 OUT3 VR GND VR VCC2 OUT1 OUT2 OUT3 GND VCC2 VCC1 OUT1 OUT2 OUT3 GND VR IN1 IN2 IN3 5k 15k 7k VREG |
Аналогичный номер детали - BA6247FP-Y |
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Аналогичное описание - BA6247FP-Y |
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