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TL499ACP 데이터시트(PDF) 7 Page - Texas Instruments |
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TL499ACP 데이터시트(HTML) 7 Page - Texas Instruments |
7 / 19 page 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 TL499A www.ti.com SLVS029H – JANUARY 1984 – REVISED NOVEMBER 2015 8 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 8.1 Application Information One or two power sources will be regulated to an output voltage set by two feedback resistors. 8.2 Typical Application Figure 3 shows the basic configuration of the two power source voltage regulator Figure 3. TL499A Basic Configuration 8.2.1 Design Requirements Provide one or more of the following power sources: • SERIES IN1 voltage greater than OUTPUT voltage by more than dropout voltage • SW REG IN2 voltage less than OUTPUT voltage Select RCL value based on Table 1 through Table 5. Table 1. Maximum Output Current vs Input and Output Voltages for Step-Up Switching Regulator With RCL = 150 Ω SWITCHING REGULATOR INPUT VOLTAGE (SW REG IN2) (V) OUTPUT 1.1 1.2 1.3 1.5 1.7 2 2.5 3 5 6 9 VOLTAGE (V) OUTPUT CURRENT (mA) 30 65 90 25 50 80 100 20 20 25 30 85 100 100 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 Copyright © 1984–2015, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: TL499A |
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