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TL499A Datasheet(PDF) 6 Page - Texas Instruments |
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TL499A Datasheet(HTML) 6 Page - Texas Instruments |
6 / 10 page TL499A WIDE-RANGE POWER-SUPPLY CONTROLLERS SLVS029G – JANUARY 1984 – REVISED SEPTEMBER 2001 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION Table 4. Maximum Output Current vs Input and Output Voltages for Step-Up Switching Regulator With RCL = 510 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 30 50 25 25 40 75 20 40 55 90 15 15 20 55 70 100 12 10 15 25 35 65 80 100 10 10 20 25 30 40 70 85 9 10 10 10 15 20 25 35 45 75 100 6 15 20 20 25 30 35 50 60 5 20 20 25 30 35 45 55 70 Circuit of Figure 1, except: 4.5 20 25 30 35 40 50 65 90† RCL = 510 Ω 3 35 35† 40† 50† 75† CF = 330 µF 2.9 35† 35† 40† 55† 80† 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 5. Maximum Output Current vs Input and Output Voltages for Step-Up Switching Regulator With RCL = 1 kΩ 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 35 25 35 50 20 35 60 15 10 30 45 65 12 20 40 45 85 10 15 25 40 55 9 10 10 15 25 30 45 60 6 10 10 10 15 20 20 30 35 5 10 10 15 20 20 25 35 40 Circuit of Figure 1, except: 4.5 15 15 15 20 25 30 40 45† RCL = 1 kΩ 3 20 25† 25† 30† 35† CF = 330 µF 2.9 20† 25† 25† 30† 45† 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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