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BA6896 数据表(PDF) 8 Page - Rohm |
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BA6896 数据表(HTML) 8 Page - Rohm |
8 / 9 page 389 Optical disc ICs BA6896FP FOperation notes (1) The BA6896FP has an internal thermal shutdown circuit. Output current is muted when the chip tempera- ture exceeds 175 _C (typically). (2) The output current can be muted be raising the mute pin (pin 7) voltage above 2.2V. Pin 7 should be open or pulled up above 0.4V during normal operation. (3) Muting also occurs when the bias pin (23 pin) drops below 1.4V (typically). Pin 23 should stay above 1.6V during normal operation. (4) The internal circuits turn off when the supply volt- age drops below 4.5V (typically) and start up again when the supply voltage rises above 4.7V (typically). (5) Muting occurs during thermal shutdown, mute-on operations or a drop in the bias pin voltage or supply volt- age. In each case, only the drivers are muted. During muting, the output pins remain at the internal bias volt- age, roughly (VCC *VF)/2. (6) Attach a bypass capacitor (roughly 0.1 µF) to the power supply, at the base of the IC. (7) The radiating fin is connected to the package’s in- ternal GND, but should also be connected to an external ground. (8) The capacitor between regulator output (pin 6) and GND also serves to prevent oscillation of the IC, so select one with good temperature characteristics. FThermal derating curve FElectrical characteristic curves |
类似零件编号 - BA6896 |
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类似说明 - BA6896 |
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