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TL499APS Folha de dados(PDF) 6 Page - Texas Instruments |
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TL499APS Folha de dados(HTML) 6 Page - Texas Instruments |
6 / 8 page TL499A WIDE-RANGE POWER-SUPPLY CONTROLLERS SLVS029F – JANUARY 1984 – REVISED MAY 2000 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION Table 2. Maximum Output Current vs Input and Output Voltages for Step-Up Switching Regulator With RCL = 200 Ω OUTPUT SWITCHING REGULATOR INPUT VOLTAGE (SW REG IN2) (V) OUTPUT VOLTAGE 1.1 1.2 1.3 1.5 1.7 2 2.5 3 5 6 9 (V) OUTPUT CURRENT (mA) 30 50 100 25 50 70 100 20 15 25 30 70 90 100 15 10 15 25 35 45 90 100 100 12 10 10 15 20 25 35 45 60 100 100 100 10 15 20 20 25 30 40 55 70 100 100 9 20 20 25 30 35 45 60 80 100 6 25 30 35 45 50 65 90 100 5 30 35 40 55 60 75 100 100 Circuit of Figure 1, except: 4.5 35 40 45 55 65 85 100 100† RCL = 200 Ω 3 50 55† 65† 80† 90† CF = 330 µF 2.9 50† 60† 65† 85† 100† CP = 0.1 µF † The difference between the output and input voltage for these combinations is greater than the minimum output-to-input differential-voltage specification at 70 °C (1.2 V), but less than the minimum at 85°C (1.9 V). Table 3. Maximum Output Current vs Input and Output Voltages for Step-Up Switching Regulator With RCL = 300 Ω OUTPUT SWITCHING REGULATOR INPUT VOLTAGE (SW REG IN2) (V) OUTPUT VOLTAGE 1.1 1.2 1.3 1.5 1.7 2 2.5 3 5 6 9 (V) OUTPUT CURRENT (mA) 30 40 70 25 40 55 100 20 10 15 20 55 70 100 15 10 10 20 30 35 75 95 100 12 10 10 10 15 20 25 35 45 95 100 100 10 15 15 15 20 25 30 45 55 100 100 9 15 15 20 25 30 35 50 60 100 100 6 25 25 30 35 45 55 70 90 5 30 30 35 45 50 65 85 100 Circuit of Figure 1, except: 4.5 30 35 40 45 55 70 95 100† RCL = 300 Ω 3 45 50† 55† 70† 90† CF = 330 µF 2.9 45† 50† 60† 75† 95† CP = 0.1 µF † The difference between the output and input voltage for these combinations is greater than the minimum output-to-input differential-voltage specification at 70 °C (1.2 V), but less than the minimum at 85°C (1.9 V). |
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