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TL499 Datasheet(PDF) 5 Page - Texas Instruments |
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TL499 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 8 page TL499A WIDE-RANGE POWER-SUPPLY CONTROLLERS SLVS029F – JANUARY 1984 – REVISED MAY 2000 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION TL499A L = 50 µH SERIES IN1 SW REG IN2 RCL = 500 Ω OUTPUT CF = 470 µF RE1 RE2 = 4.7 kΩ CP = 0.01 µF SERIES IN1 SW REG IN2 REF SW CURRENT CTRL OUTPUT SW IN GND (PWR) GND + 1 3 8 7 6 5 8 1 2 3 4 Figure 1. TL499A Basic Configuration Table 1. Maximum Output Current vs Input and Output Voltages for Step-Up Switching Regulator With RCL = 150 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 65 90 25 50 80 100 20 20 25 30 80 100 100 15 15 20 30 45 55 100 100 100 12 10 15 20 25 30 40 55 70 100 100 100 10 15 20 25 30 35 45 65 80 100 100 9 20 25 25 35 40 50 70 90 100 100 6 30 35 40 45 55 75 95 100 5 35 40 45 55 70 85 100 100 Circuit of Figure 1, except: 4.5 35 45 50 60 75 95 100 100† RCL = 150 Ω 3 55 65† 75† 95† 100† CF = 330 µF 2.9 60† 70† 75† 100† 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). |
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