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TPS54615-Q1 Datasheet(PDF) 6 Page - Texas Instruments |
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TPS54615-Q1 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 18 page TPS54611Q1,TPS54612Q1 TPS54613Q1,TPS54614Q1 TPS54615Q1,TPS54616Q1 SGLS266D − OCTOBER 2004 − REVISED DECEMBER 2004 www.ti.com 6 ELECTRICAL CHARACTERISTICS (CONTINUED) TJ = –40°C to 125°C, VI = 3 V to 6 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT OSCILLATOR Internally set—free running frequency FSEL ≤ 0.8 V, RT open 265 350 440 kHz Internally set—free running frequency FSEL ≥ 2.5 V, RT open 415 550 680 kHz Externally set—free running RT = 180 k Ω (1% resistor to AGND)(1) 252 280 308 Externally set—free running frequency range RT = 160 k Ω (1% resistor to AGND) 290 312 350 kHz frequency range RT = 68 k Ω (1% resistor to AGND)(1) 663 700 762 kHz High level threshold, FSEL 2.5 V Low level threshold, FSEL 0.8 V Pulse duration, FSEL(1) 50 ns Frequency range, FSEL(1) (4) 330 700 kHz Ramp valley(1) 0.75 V Ramp amplitude (peak-to-peak)(1) 1 V Minimum controllable on time(1) 200 ns Maximum duty cycle(1) 90% (1) Specified by design (2) Static resistive loads only (3) Tested using circuit in Figure 10. (4) To ensure proper operation when RC filter is used between external clock and FSEL pin, the recommended values are R ≤ 1kΩ and C ≤ 120 pF. |
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