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L9663 数据表(PDF) 17 Page - STMicroelectronics |
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L9663 数据表(HTML) 17 Page - STMicroelectronics |
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17 / 106 page  DS11401 Rev 6 17/106 L9663 Power supply 105 2 Power supply 2.1 Internal supply The internal analog and digital part is supplied by the supply voltage VB. The necessary power supply for the internal digital and analog parts is generated internally by the transceiver IC. The generated voltage is monitored. In case of under/over voltage, the transceiver IC performs a power on reset (POR). Figure 7. Internal power supply and reset generation Basic features: Voltage regulator Under / Over voltage monitoring Reset generation of the IC in case of under / over voltage Figure 8. Input structure of supply VINTA VINTA_OV VINTA Monitor VINTA_UV VINTD_OV VINTD Monitor VINTD_UV VINTD VBGM (Monitor) DGND Monitor DGND GND1/2 DGND_LOSS VBG_READY Reference for Controlling all supplies VBGR (Reference) POR VINTA_UV/OV DGND_LOSS VBG_READY CLKFRERR VINTD_UV/OV GAPG1610151530PS 3.3V internal analog/digital supply regulator VB VINTD DGND C VINTA PSI5 transceiver GAPG1610151541PS |
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