TS4264G Preliminary

3-3

2004/01 rev. A

Typical Application Circuit

Application Information

Dimensioning Information on External Components

The input capacitor Cin is necessary for compensating line influences. Using a resistor of approx. 1Ω in series with

Cin, the oscillating of input inductivity and input capacitance can be clamped. The output capacitor Cout is necessary

for the stability of the regulating circuit. Stability is guaranteed at values Cout ≥10uF and an ESR ≤ 4Ω within the

operating temperature range.

Circuit Description

The control amplifier compares a reference voltage, which is kept highly precise by resistance adjustment, to a voltage

that is proportional to the output voltage and drives the base of the series transistor via a buffer. Saturation control,

working as a function of load current, prevents any over-saturation of the power element. The IC is additionally

protected against overload, over temperature and reverse polarity