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VND7040AJTR Datasheet(PDF) 29 Page - STMicroelectronics |
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VND7040AJTR Datasheet(HTML) 29 Page - STMicroelectronics |
29 / 46 page VND7040AJ Application information The value of these resistors is a compromise between the leakage current of microcontroller and the current required by the HSD I/Os (Input levels compatibility) with the latch-up limit of microcontroller I/Os. Equation VCCpeak/Ilatchup ≤ Rprot ≤ (VOHµC - VIH - VGND) / IIHmax Calculation example: For VCCpeak = -150 V; Ilatchup ≥ 20 mA; VOHµC ≥ 4.5 V 7.5 kΩ ≤ Rprot ≤ 140 kΩ. Recommended values: Rprot = 15 kΩ 4.4 Multisense - analog current sense Diagnostic information on device and load status are provided by an analog output pin (MultiSense) delivering the following signals: • Current monitor: current mirror of channel output current • VCC monitor: voltage propotional to VCC • TCASE: voltage propotional to chip temperature Those signals are routed through an analog multiplexer which is configured and controlled by means of SELx and SEn pins, according to the address map in MultiSense multiplexer addressing Table. Figure 37: MultiSense and diagnostic – block diagram DocID027395 Rev 1 29/46 |
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