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TL2845P Arkusz danych(PDF) 6 Page - Texas Instruments |
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TL2845P Arkusz danych(HTML) 6 Page - Texas Instruments |
6 / 12 page TL284x, TL384x CURRENT-MODE PWM CONTROLLERS SLVS038E – JANUARY 1989 – REVISED DECEMBER 1999 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range, VCC = 15 V (see Note 4), RT = 10 kΩ, CT = 3.3 nF (unless otherwise specified) (continued) supply voltage PARAMETER TEST CONDITIONS TL284x TL384x UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX MIN TYP† MAX UNIT Start-up current 0.5 1 0.5 1 mA Operating supply current VFB and ISENSE at 0 V 11 17 11 17 mA Limiting voltage ICC = 25 mA 34 34 V † All typical values are at TA = 25°C. NOTE 4: Adjust VCC above the start threshold before setting it to 15 V. electrical characteristics, VCC = 15 V (see Note 4), RT= 10 kΩ, CT = 3.3 nF, TA = 25°C (unless otherwise specified) reference section PARAMETER TEST CONDITIONS TL384xY UNIT PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Output voltage IO = 1 mA 5 V Line regulation VCC = 12 V to 25 V 6 mV Load regulation IO = 1 mA to 20 mA 6 mV Temperature coefficient of output voltage 0.2 mV/ °C Output noise voltage f = 10 Hz to 10 kHz 50 µV Output-voltage long-term drift After 1000 h at TA = 25°C 5 mV Short-circuit output current –100 mA NOTE 4: Adjust VCC above the start threshold before setting it to 15 V. oscillator section PARAMETER TEST CONDITIONS TL384xY UNIT PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Oscillator frequency (see Note 5) 52 kHz Frequency change with supply voltage VCC = 12 V to 25 V 2 Hz/kHz Frequency change with temperature 5 Hz/kHz Peak-to-peak amplitude at RT/CT 1.7 V NOTES: 4. Adjust VCC above the start threshold before setting it to 15 V. 5. Output frequency equals oscillator frequency for the TLx842 and TLx843. Output frequency is one-half oscillator frequency for the TLx844 and TLx845. |
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