Moteur de recherche de fiches techniques de composants électroniques |
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BA5415 Fiches technique(PDF) 6 Page - Rohm |
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BA5415 Fiches technique(HTML) 6 Page - Rohm |
6 / 10 page 400 Audio ICs BA5415A / BA5416 FOperation notes (5) Standby switch The IC has a built-in standby switch (pin 6), so the IC can be powered on and off by a switch with low current capac- ity. The on voltage V1 can be in the range 3V to VCC, so the standby switch will not adversely influence circuit characteristics as with conventional methods. This also increases design freedom. At normal temperatures, the switch operates at a voltage of V1 = 3V or higher, but we recommend that you use it at 3.5V or higher to allow for low temperatures. A small “pop” noise may be generated when the power is switched off using the external switch. If this is the case, connect a capacitor of about C3 = 0.022 µF in paral- lel with the switch. (6) Filter pin Pin 7 is for connection of a ripple filter. The ripple rejection can be increased somewhat by increasing the capaci- tance, but this also affects the starting time, so we recom- mend a value in the range 100 µF to 220µF. The standard starting time is 0.8sec. (7) Applied voltage As long as the output power transistor is operated within the ASO (safe operating range Fig. 9), the IC can be op- erated to its absolute maximum ratings (VCCMAX. = 24.0V). During normal operation, operate the IC within its recommended operating voltage range; exceeding this range will result in destruction of the IC. When the stand- by switch is off, the IC is guaranteed up to VCCMax. = 24.0V, but when the standby switch is on, set the power supply regulation characteristics (including the capaci- tance of the power supply capacitor connected between VCC and GND) so that VCC is 18.0V or less (15.0V or less for the BA5416). If the IC is inserted backwards, VCC and GND will be reversed and the IC will be destroyed instantly. (8) Thermal shutdown If the load is shorted or there is insufficient heat dissipa- tion, the thermal shutdown circuit will operate limit the output and prevent damage to the IC. This occurs when the temperature of the heatsink plate exceeds a temper- ature of about 175 _C. (9) Other Provided the recommended circuit constants are used, the application circuit will function correctly. However, we recommend that you confirm the characteristics of the circuit in actual use. If you change the circuit constants, check both the static and transient characteristics of the circuit, and allow suffi- cient margin to accommodate variations in both ICs and external components. (10) Standard values for the DC voltages on each pin (VCC = 12V, Ta = 25 _C, measurement circuit: Fig. 1) |
Numéro de pièce similaire - BA5415 |
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Description similaire - BA5415 |
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