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L4979D Datasheet(PDF) 4 Page - STMicroelectronics |
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L4979D Datasheet(HTML) 4 Page - STMicroelectronics |
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4 / 10 page  L4979MD L4979D 4/10 VOLTAGE REGULATOR Vo Vo_ref Output voltage Vs = 5.6 to 31V Io = 1 to 150mA 4.90 5.00 5.10 V Vo Ishort Output short circuit current (1) Vs = 13.5V 150 280 400 mA Vo Ilim Output current limitation (1) Vs = 13.5V 150 320 500 mA Vs, Vo Vline Line regulation voltage Vs = 5.6 to 31V Io = 1 to 150mA 25 mV Vo Vload Load regulation voltage Io = 1 to 150mA 25 mV Vs, Vo Vdp Drop voltage Io = 150mA 200 400 mV Vs, Vo SVR Ripple rejection (2) fr = 100 Hz 55 dB RESET Res Vres_l Reset output low voltage Rext = 5kΩ to Vo, Vo > 1V 0.4 V Res Ires_h Reset output high leakage current Vres = 5V 1 µA Res R_p_u Internal Pull up resistance with respect to Vo 12 25 50 k Ω Res Vo_th Reset threshold voltage Vs = 5.6 to 31V Io = 1 to 150mA 6% below Vo_ref 8% below Vo_ref 10% below Vo_ref Vcr Vrhth Reset timing high threshold Vs = 13.5V 44% Vo_ref 47% Vo_ref 50% Vo_ref Vcr Vrlth Reset timing low threshold Vs = 13.5V 10% Vo_ref 13% Vo_ref 16% Vo_ref Vcr Icr Charge current Vs = 13.5V 8 17 30 µA Vcr Idr Discharge current Vs = 13.5V 8 17 30 µA Res trr_2 Reset delay time (3) Vo = Vo_th -100mV 100 250 700 µs Res trd Reset pulse delay Vs = 13.5V, Ctr = 1nF 65 150 ms WATCHDOG 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 300 mV Wi Ii Pull down current Vs = 13.5V 10 20 µA Vcw Vwhth High threshold Vs = 13.5V 2.20 2.35 2.50 V Vcw Vwlth Low threshold Vs = 13.5V 0.50 0.65 0.80 V Pin Symbol Parameter Test Condition Min. Typ. Max. Unit Table 5: Electrical Characteristics (continued) |
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