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MC33063A-Q1 датащи(PDF) 9 Page - Texas Instruments |
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MC33063A-Q1 датащи(HTML) 9 Page - Texas Instruments |
9 / 26 page Upper Threshold (1.25 V Typical) Lower Threshold (0.75 V Typical) Discharge Time V Charge 6t t Comparator Output Timing Capacitor, C T Output Switch Nominal Output Voltage Output Voltage 1 0 On Off Startup Quiescent Operation MC33063A-Q1 www.ti.com SLLS654C – APRIL 2005 – REVISED DECEMBER 2014 Feature Description (continued) Figure 8. Typical Operation Waveforms 7.4 Device Functional Modes The oscillator is composed of a current source and a current sink that charge and discharge the external timing capacitor (CT) between an upper and lower preset threshold. The typical charge current is 35 mA, and the typical discharge current is 200 mA, yielding approximately a 6:1 ratio. Thus, the ramp-up period is six times longer than that of the ramp-down period (see Figure 9). The upper threshold is 1.25 V, which is same as the internal reference voltage, and the lower threshold is 0.75 V. The oscillator runs constantly, at a pace controlled by the value of CT. Figure 9. Oscillator Voltage Thresholds Copyright © 2005–2014, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: MC33063A-Q1 |
Аналогичный номер детали - MC33063A-Q1_15 |
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Аналогичное описание - MC33063A-Q1_15 |
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