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SM8146AD1 Folha de dados(PDF) 9 Page - Nippon Precision Circuits Inc |
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SM8146AD1 Folha de dados(HTML) 9 Page - Nippon Precision Circuits Inc |
9 / 19 page SM8146AD1 SEIKO NPC CORPORATION —9 (2) EL Brightness Adjustment using EL Drive Frequency This dimming function changes the EL brightness in response to the EL drive frequency determined by the value of the resistance of ROCE connected to the OCE pin. This dimming property should only be set when determining the peripheral components. It is not recommended to vary the EL brightness by switching the ROCE resistance. EL Output Voltage Waveform (Sine Wave) Distortion Flat regions near the waveform peaks of EL driving voltage are generated in principle of operation. They are not failure and do not affect the brightness and the audible noise. Depending on conditions, the OUT1/OUT2 output waveform may become distorted as shown by the solid line in the figure above. If the booster circuit drive capability is insufficient, the circuit may not be able to provide the boost required to meet the ideal curve shown by the dotted line in the figure above. This condition can be caused by the inductor supply voltage being too low, the inductance value being too high, the inductor fre- quency being too high, the EL drive frequency being too high, or the EL surface area being too large. OUT1 OUT2 OUT1 - OUT2 OUT1 OUT2 OUT1 - OUT2 V OUT1 − VOUT2 |
Nº de peça semelhante - SM8146AD1 |
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Descrição semelhante - SM8146AD1 |
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