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TPS54312QPWPRQ1 Datasheet(PDF) 8 Page - Texas Instruments |
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TPS54312QPWPRQ1 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 20 page TPS54311-Q1, TPS54312-Q1 TPS54313-Q1, TPS54314-Q1 TPS54315-Q1, TPS54316-Q1 SGLS242G − OCTOBER 2004 − REVISED SEPTEMBER 2008 www.ti.com 8 TYPICAL CHARACTERISTICS Figure 1 0 20 40 60 80 100 120 −40 0 25 85 125 IO = 3 A VI = 3.3 V TJ − Junction Temperature − °C DRAIN-SOURCE ON-STATE RESISTANCE vs JUNCTION TEMPERATURE Figure 2 0 20 40 60 80 100 −40 0 25 85 125 IO = 3 A VI = 5 V TJ − Junction Temperature − °C DRAIN-SOURCE ON-STATE RESISTANCE vs JUNCTION TEMPERATURE Figure 3 450 −40 0 25 550 INTERNALLY SET OSCILLATOR FREQUENCY vs JUNCTION TEMPERATURE 750 85 125 650 350 250 TJ − Junction Temperature − °C FSEL ≥ 2.5 V FSEL ≤ 0.8 V Figure 4 400 −40 0 25 500 EXTERNALLY SET OSCILLATOR FREQUENCY vs JUNCTION TEMPERATURE 800 85 125 700 300 200 TJ − Junction Temperature − °C 600 RT = 68 k RT = 100 k RT = 180 k Figure 5 0.889 −40 0 25 VOLTAGE REFERENCE vs JUNCTION TEMPERATURE 0.895 85 125 0.893 0.887 0.885 TJ − Junction Temperature − °C 0.891 Figure 6 0.8850 0.8870 0.8890 0.8910 0.8930 0.8950 34 56 f = 350 kHz TA = 85°C VI − Input Voltage − V OUTPUT VOLTAGE REGULATION vs INPUT VOLTAGE Figure 7 f − Frequency − Hz 60 40 0 0 10 100 1 k 10 k 100 k 1 M 80 100 ERROR AMPLIFIER OPEN LOOP RESPONSE 140 10 M 120 20 −20 0 −20 −40 −60 −80 −100 −120 −140 −160 −180 −200 RL= 10 kΩ, CL = 160 pF, TA = 25°C Phase Gain Figure 8 TJ − Junction Temperature − °C 3.35 3.20 2.90 −40 0 25 85 3.50 3.65 INTERNAL SLOW-START TIME vs JUNCTION TEMPERATURE 125 3.80 3.05 2.75 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 01 2 3 4 IL − Load Current − A DEVICE POWER LOSSES vs LOAD CURRENT TJ − 125°C, fs = 700 kHz VI = 3.3 V VI = 5 V Figure 9 |
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