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TPS54973PWPRG4 Datasheet(PDF) 7 Page - Texas Instruments |
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TPS54973PWPRG4 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 10 page TPS54973 SLVS453A − FEBRUARY 2003 − REVISED FEBRUARY 2005 www.ti.com 7 TYPICAL CHARACTERISTICS Figure 1 0 5 10 15 20 25 −40 0 25 85 125 VIN = 3.0 V IO = 9 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 Figure 5 IL − Load Current − A DEVICE POWER LOSSES vs LOAD CURRENT 0 1 2 3 4 5 6 7 8 0 2 4 6 8 10121416 VI = 3.3 V TJ = 125°C Figure 6 0.885 0.887 0.889 0.891 0.893 0.895 3 3.1 3.2 3.3 3.4 3.5 3.6 VI − Input Voltage − V OUTPUT VOLTAGE REGULATION vs INPUT VOLTAGE 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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