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| TLE4275_07 Datasheet, PDF (2/17 Pages) Infineon Technologies AG – 5-V Low Drop Fixed Voltage Regulator 5-V Low Drop Fixed Voltage Regulator | |||
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TLE 4275
Dimensioning Information on External Components
The input capacitor CI is necessary for compensation of line influences. Using a resistor
of approx. 1 ⦠in series with CI, the oscillating of input inductivity and input capacitance
can be damped. The output capacitor CQ is necessary for the stability of the regulation
circuit. Stability is guaranteed at values CQ ⥠22 µF and an ESR of ⤠5 ⦠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
Data Sheet
2
Rev. 1.7, 2007-02-19
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