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L4995AK Datasheet(PDF) 11 Page - STMicroelectronics |
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L4995AK Datasheet(HTML) 11 Page - STMicroelectronics |
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11 / 35 page  L4995 Electrical specifications Doc ID 13103 Rev 13 11/35 Table 7. Watchdog Pin Symbol Parameter Test condition Min. Typ. Max. Unit Wi Vih Input high voltage VS = 13.5V 3.5 V Wi Vil Input low voltage VS = 13.5V 1.5 V Wi Vih Input hysteresis VS = 13.5V 500 mV Wi Iwi Pull down current VS = 13.5V Vwi = 3.5V 610 µA Vcw Vwlth Low threshold VS = 13.5V 10% 13% 16% Vo_ref Vcw Vwhth High threshold VS = 13.5V 44% 47% 50% Vo_ref Vcw Icwc Charge current VS = 13.5V, Vcw = 0.1V 510 20 µA Vcw Icwd Discharge current VS = 13.5V, Vcw = 2.5V 1.25 2.5 5 µA Vcw Twop Watchdog period VS = 13.5V, Ctw = 47nF 20 40 80 ms Res twol Watchdog output low time VS = 13.5V, Ctw = 47nF 48 16 ms Table 8. Enable Pin Symbol Parameter Test condition Min. Typ. Max. Unit En VEn_low En input low voltage 1 V En VEn_high En input high voltage 3 V En VEn_hyst En input hysteresis 830 mV En IEn Pull down current VS = 13.5V 10 18 µA |
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