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UC1524J883B Folha de dados(PDF) 5 Page - Texas Instruments |
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UC1524J883B Folha de dados(HTML) 5 Page - Texas Instruments |
5 / 18 page www.ti.com TYPICAL CHARACTERISTICS 40 30 10 −10 100 1 k 10 k 100 k 60 70 f − Frequency − Hz 90 1 M 10 M 0 20 50 80 RF = VIN = 20 V TJ = 25 C RF = 1M RF = 300 k RF = 100 k RF = 30 k RF is Resistance From Pin 9 to Ground NOTE: Value of RF Below 30 kW Will Began to Limit Maximum Duty-Cycle 10 k 1 k 100 1 2 5 10 20 100 k 1 M 50 100 RT − Timing Resistor − kW VIN = 20 V TJ = 25 C CT = 0.001 mF CT = 0.003 mF CT = 0.01 mF CT = 0.003 mF CT = 0.1 mF 1 0.4 0.1 0.001 0.004 0.01 4 10 0.04 0.1 CT − Capacitance − F VIN = 20 V TJ = 25 C NOTE: Dead Time = Blanking Pulse Width Plus Outplay Delay 2 1.5 0.5 0 0 20 40 60 2.5 3.5 Load Current − mA 4 80 100 1 3 VCC = 20 V TJ = 125 C TJ = 25 C TJ = −55 C UC1524 UC2524 UC3524 SLUS180E – NOVEMBER 1999 – REVISED OCTOBER 2005 OPEN-LOOP VOLTRAGE AMPLIFICATION OSCILLATOR FREQUENCY OF ERROR AMPLIFIER vs vs TIMING COMPONENTS FREQUENCY Figure 1. Figure 2. OUTPUT DEAD TIME OUTPUT SATURATION VOLTAGE vs vs TIMING CAPACITANCE VALUE LOAD CURRENT Figure 3. Figure 4. 5 |
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