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TLE4275S Datasheet(PDF) 2 Page - Infineon Technologies AG |
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TLE4275S Datasheet(HTML) 2 Page - Infineon Technologies AG |
2 / 17 page Data Sheet 2 Rev. 1.7, 2007-02-19 TLE 4275 Dimensioning Information on External Components The input capacitor C I is necessary for compensation of line influences. Using a resistor of approx. 1 Ω in series with CI, the oscillating of input inductivity and input capacitance can be damped. The output capacitor C Q is necessary for the stability of the regulation circuit. Stability is guaranteed at values C Q ≥ 22 µF and an ESR of ≤ 5 Ω within the operating temperature range. Circuit Description The control amplifier compares a reference voltage to a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer. Saturation control as a function of the load current prevents any oversaturation of the power element. The IC also incorporates a number of internal circuits for protection against: • Overload • Overtemperature • Reverse polarity |
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