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TLE4276SV85 データシート(PDF) 10 Page - Infineon Technologies AG |
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TLE4276SV85 データシート(HTML) 10 Page - Infineon Technologies AG |
10 / 19 page TLE 4276 Data Sheet Version 2.2 10 2000-10-11 Application Information for Variable Output Regulator TLE 4276 V, SV, DV, GV The output voltage of the TLE 4276 V can be adjusted between 2.5 V and 20 V by an external output voltage divider, closing the control loop to the voltage adjust pin VA. The voltage at pin VA is compared to the internal reference of typical 2.5 V in an error amplifier. It controls the output voltage. Figure 5 Application Detail External Components at Output for Variable Voltage Regulator The output voltage is calculated according to Equation 1: V Q =(R1 + R2)/R2 ⌠ V ref, neglecting IVA (1) V ref is typically 2.5 V. To avoid errors caused by leakage current I VA, we recommend to choose the resistor value R 2 according to Equation 2: R 2 <50 k τ (2) For a 2.5 V output voltage the output pin Q is directly connected to the adjust pin VA. The accuracy of the resistors R 1 and R2 add an additional error to the output voltage tolerance. The operation range of the variable TLE 4276 V is V Q + 0.5 V to 40 V. For internal biasing a minimum input voltage of 4.3 V is required. For output voltages below 4 V the voltage drop is 4.3 V – V Q AEB02804 Current and Saturation Control Internal Reference 2.5 V Typical 5 V ref R 2 R 1 C Q 22 µF Q VA 4 |
同様の部品番号 - TLE4276SV85 |
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同様の説明 - TLE4276SV85 |
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