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L9779WD 数据表(PDF) 43 Page - STMicroelectronics |
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L9779WD 数据表(HTML) 43 Page - STMicroelectronics |
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43 / 170 page  DocID027452 Rev 5 43/170 L9779WD Functional description 169 Figure 18. VB overvoltage diagram Table 15. Linear 5 V regulator electrical characteristics Pin Symbol Parameter Test condition Min Typ Max Unit VDD5 VDD5 Output voltage 5 V IVDD5 = 5 to 400 mA Vbat = 6-18 V 4.9 5 5.1 V VDD5 Transient load regulation Square wave on VDD5, IDD5= ±100 mA; F0 = 5 kHz; tr = tf = 0.5 µs; within the output current range NO reset occurs. Cout =1 µF Cout =10 µF 4.8 4.85 5 5 5.2 5.15 V Srpower-up5 Output voltage slew rate at power-up Ivdd5 = 50 mA; Cout =10 µF 5 15 25 V/ms Vline_5 Line regulation voltage IVDD5 = 5 to 400 mA 6 V < Vb < 18 V -- 25 mV Vload_5 Load regulation voltage -- 25 mV VDD5Drift Total output VDD5 voltage drift Cout =1 µF (parameter validated in reliability test) -- 100 mV |
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