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L9908 データシート(PDF) 47 Page - STMicroelectronics |
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L9908 データシート(HTML) 47 Page - STMicroelectronics |
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47 / 152 page  Symbol Parameter Test Condition Min Typ Max Unit Notes VDH_uv_th_12v VDH under-voltage threshold (12 V systems) - 4 4.25 4.5 V Comparator output Low to High VDH_uv_th_24v VDH under-voltage threshold (24 V systems) - 7.8 8.4 9 V Comparator output Low to High VDH_uv_th_48v VDH under-voltage threshold (48 V systems) - 17.3 18.65 20 V Comparator output Low to High VDH_uv_hys VDH under-voltage hysteresis - 90 150 250 mV - VDH_ov_th1_12v VDH over-voltage threshold (12 V systems 1) - 18.11 18.67 19.23 V Comparator output Low to High V_ov_th2_12v VDH over-voltage threshold (12 V systems 2) - 27.16 28 28.84 V Comparator output Low to High VDH_ov_th1_24v VDH over-voltage threshold (24 V systems 1) - 36.22 37.34 38.46 V Comparator output Low to High VDH_ov_th2_24v VDH over-voltage threshold (24 V systems 2) - 50.3 51.86 53.41 V Comparator output Low to High VDH_ov_th1_48v VDH over-voltage threshold (48 V systems 1) - 56.34 58.08 59.82 V Comparator output Low to High VDH_ov_th2_48v VDH over-voltage threshold (48 V systems 2) - 60.36 62.23 64.09 V Comparator output Low to High VDH_ov_th3_48v VDH over-voltage threshold (48 V systems 3) - 65.39 67.41 69.43 V Comparator output Low to High VDH_ov_th4_48v VDH over-voltage threshold (48 V systems 4) - 70.42 72.6 74.78 V Comparator output Low to High VDH_ov_hys VDH over-voltage hysteresis - 0.8 1.15 1.85 V - VDH_tflt_acc VDH Fault Detection Filter Time accuracy CLK_SSM_EN = 0 -15 - 15 % - Note: All parameters are guaranteed and tested, in the voltage ranges reported above in Table 5 unless otherwise specified. Where not specified the parametrical operating range equals the functional operating range. Figure 25. VDH operative range L9908 Functional description DS13546 - Rev 5 page 47/152 |
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