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TPS79230DBVT Datasheet(PDF) 5 Page - Texas Instruments |
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TPS79230DBVT Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 19 page  TPS79201, TPS79225 TPS79228, TPS79230 SLVS337B – MARCH 2001 – REVISED MAY 2002 www.ti.com 5 TYPICAL CHARACTERISTICS Figure 1 2.796 2.797 2.799 2.8 2.801 2.802 2.803 0 2040 6080 100 IO – Output Current – mA TPS79228 OUTPUT VOLTAGE vs OUTPUT CURRENT VI = 3.8 V Co = 10 µF TJ = 25° C Figure 2 2.76 2.77 2.78 2.79 2.8 2.81 2.82 –40 –25 –10 5 20 35 50 65 80 95 110 125 TJ – Junction Temperature – °C TPS79228 OUTPUT VOLTAGE vs JUNCTION TEMPERATURE IO = 100 mA IO = 1 mA VI = 3.8 V Co = 10 µF Figure 3 100 120 140 160 180 200 220 240 260 –40 –25 –10 5 20 35 50 65 80 95 110 125 TJ – Junction Temperature – °C TPS79228 GROUND CURRENT vs JUNCTION TEMPERATURE IO = 1 mA VI = 3.8 V Co = 10 µF IO = 100 mA Figure 4 f – Frequency – Hz 1k 10k 100k IO = 1 mA VI = 3.8 V Co = 1 µF C(byp) = 0.1 µF 100 IO = 100 mA TPS79228 OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY 0 0.05 0.1 0.15 0.2 0.25 0.3 Figure 5 f – Frequency – Hz 1k 10k 100k IO = 1 mA 100 IO = 100 mA TPS79228 OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY VI = 3.8 V Co = 10 µF C(byp) = 0.1 µF 0 0.05 0.1 0.15 0.2 0.25 0.3 Figure 6 f – Frequency – Hz 1k 10k 100k 100 TPS79228 OUTPUT SPECTRAL NOISE DENSITY vs FREQUENCY VI = 3.8 V IO = 100 mA Co= 10 µF C(byp) = 0.1 µF C(byp) = 0.001 µF C(byp) = 0.0047 µF 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 C(byp) = 0.01 µF 0.001 0.01 0.1 TPS79228 ROOT MEAN SQUARED OUTPUT NOISE vs BYPASS CAPACITANCE C(byp) – Bypass Capacitance – µF 0 10 20 30 40 50 60 Figure 7 VI = 3.8 V VO = 2.8 V Io = 100 mA Co = 10 µF BW = 100 Hz to 100 kHz Figure 8 100 1 M 10 1 k f – Frequency – Hz 10 k TPS79228 OUTPUT IMPEDANCE vs FREQUENCY 100 k IO = 1 mA 0 0.5 1 1.5 2 2.5 0 IO = 100 mA 10 M VI = 3.8 V Co = 10 µF TJ = 25° C Figure 9 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 –40 –25 –10 5 20 35 50 65 80 95 110 125 IO = 100 mA IO = 10 mA VI = 2.7 V Co = 10 µF TJ – Junction Temperature – °C TPS79228 DROPOUT VOLTAGE vs JUNCTION TEMPERATURE |
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