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TPS54873 Datasheet(PDF) 7 Page - Texas Instruments |
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TPS54873 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 23 page TPS54873 SLVS444A − OCTOBER 2002 − REVISED FEBRUARY 2005 www.ti.com 7 TYPICAL CHARACTERISTICS Figure 1 0 10 20 30 40 50 60 −40 −15 10 35 60 85 110 135 VI = 5 V, IO = 8 A DRAIN-SOURCE ON-STATE RESISTANCE vs JUNCTION TEMPERATURE TJ − Junction Temperature − °C Figure 2 250 350 450 550 650 750 −40 0 25 85 125 TJ − Junction Temperature − °C INTERNALLY SET OSCILLATOR FREQUENCY vs JUNCTION TEMPERATURE SYNC ≥ 2.5 V SYNC ≤ 0.8 V Figure 3 200 300 400 500 600 700 800 −40 0 25 85 125 TJ − Junction Temperature − °C EXTERNALLY SET OSCILLATOR FREQUENCY vs JUNCTION TEMPERATURE RT = 68 k RT = 100 k RT = 180 k Figure 4 0.885 0.887 0.889 0.891 0.893 0.895 −40 0 25 85 125 TJ − Junction Temperature − °C VOLTAGE REFERENCE vs JUNCTION TEMPERATURE 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 012 3 45 67 8 IL − Load Current − A DEVICE POWER LOSSES vs LOAD CURRENT TJ = 125°C fs = 700 kHz VI = 5 V Figure 5 Figure 6 VI − Input Voltage − V OUTPUT VOLTAGE REGULATION vs INPUT VOLTAGE 0.885 0.887 0.889 0.891 0.893 0.895 4.5 4.8 5.1 5.4 5.7 6 Figure 7 −20 0 20 40 60 80 100 120 140 1 100 1 k 1 M −200 −180 −160 −140 −120 −100 −80 −60 −40 −20 0 10 10 k 100 k 10 M f − Frequency − Hz ERROR AMPLIFIER OPEN LOOP RESPONSE Phase Gain RL = 10 kΩ, CL = 160 pF, TA = 25°C Figure 8 2.75 2.90 3.05 3.20 3.35 3.50 3.65 −40 0 25 85 125 TJ − Junction Temperature − °C INTERNAL SLOW-START TIME vs JUNCTION TEMPERATURE 3.80 |
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Similar Description - TPS54873_16 |
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