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L9396 データシート(PDF) 59 Page - STMicroelectronics |
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L9396 データシート(HTML) 59 Page - STMicroelectronics |
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59 / 109 page  DS12539 Rev 6 59/109 L9396 Remote sensor interface 108 ground with a resistance ≤ 7 kΩ will be detected as short condition while a short with a resistance ≥ 19 kΩ will not be detected. This kind of diagnostic is present only when channel is in OFF state. The current sense is carried out in the low side through RSULx(x=0,1,2,3). The sensor interface implements either the detection of a leakage to battery or RSUHx condition, that will possibly raise the sensor current level. The channel in this condition is not shutdown. 5.4 Electrical characteristics Table 41. WSS configuration Symbol Parameter Conditions Min Typ Max Units CRSUHx RSUHx load capacitance Design Information 6 - - nF CRSULx RSULx capacitance Design Information - - 30.8 nF RRSUx Output resistance High side + low side Up to ILIMTH 4.75 - 30 Ω IBO Base Current Auto-adjusting option (default value) -9% 7 +9% mA ITH1 7 mA / 14 mA detection - -9% 9.8 +9% mA ITH2_RISE 14 mA / 28 mA rising edge detection - -9% 19.8 +9% mA ITH2_FALL 14 mA / 28 mA falling edge detection - -9% 13.6 +9% mA ITHOPEN Open sensor detection VRSULx=OPEN 1.0 - 3.5 mA tOPEN_DET Open sensor detection filter time - 11 - 15 µs ITHVBATP Leakage to VBATP or RSUHx threshold VRSULx= VRSUHx, -15% 23 +15% mA tLEAKBAT_DET Leakage to VBATP or RSUHx filter time -97 - 110 µs ILIMTHHS Output Current Limit High side -80 - -33 mA IOCTHHS Overcurrent threshold High side -80 - -31 mA ILIMTHLS Output Current Limit Low side 35 - 80 mA IOCTHLS Overcurrent threshold Low side 35 - 80 mA VRSUHxSTB Output Short to Battery Threshold - 10.0 - 100 mV ISTBTH Static reverse current into VPREREG VRSUHx > VVPREREG + VRSUHxSTB 0.0 - 1 mA IRSUL_PU RSULx pull-up current RSULx=OFF 0V < VRSULx < VSTGTH 80 - 180 µA |
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