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TPS54122RHLR Datasheet(PDF) 11 Page - Texas Instruments |
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TPS54122RHLR Datasheet(HTML) 11 Page - Texas Instruments |
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11 / 40 page  0 25 50 75 100 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 V SENSE (V) Vsense Falling Vsense Rising C013 1.05 V 1.2 V 1.5 V 1.8 V 2.5 V 50 55 60 65 70 75 80 85 90 95 100 0 0.5 1 1.5 2 2.5 3 I - Output Current - A O 300 400 500 600 700 800 900 1,000 100 200 300 400 500 600 700 800 900 R RT (k ) C011 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 50 70 90 110 130 150 170 190 R RT (k ) C012 2.1 2.2 2.3 2.4 2.5 -40 -20 0 20 40 60 80 100 120 140 Temperature ( ƒC) C007 90 92 94 96 98 100 102 104 106 108 110 -40 -20 0 20 40 60 80 100 120 140 Temperature ( ƒC) PG Threshold Low Rising PG Threshold High Rising PG Threshold High Falling PG Threshold Low Falling C008 11 TPS54122 www.ti.com SBVS221B – NOVEMBER 2013 – REVISED AUGUST 2016 Product Folder Links: TPS54122 Submit Documentation Feedback Copyright © 2013–2016, Texas Instruments Incorporated Typical Characteristics (continued) At VVIN = VBIAS= VLDOEN= 5 V, VLDOIN = DC-DC_OUT = 2.1 V, VO = 1.8 V, IO = 50 mA, VEN = floating, COUT = 100 μF, and CSS = CNR = 0.01 µF (see Figure 27), unless otherwise noted. Figure 19. DC-DC Soft-Start Current vs Temperature Figure 20. LDO PG Threshold vs Temperature Figure 21. DC-DC Switching Frequency vs RRT Figure 22. DC-DC Switching Frequency vs RRT Figure 23. Switching Frequency vs VSENSE Figure 24. DC-DC Efficiency vs Output Current |
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