TLE4274 datasheet(2/16 Pages) INFINEON

部件名	TLE4274

功能描述	Low Drop Voltage Regulator Output voltage 5 V, 8.5 V or 10 V

PDF	16 Pages

Scroll/Zoom	100%

制造商	INFINEON [Infineon Technologies AG]

网页	http://www.infineon.com

标志

2 / 16 page

Data Sheet

Rev. 1.6, 2007-01-23

TLE 4274

Dimensioning Information on External Components

The input capacitor

I is necessary for compensating 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

Q is necessary for the stability of the regulation circuit.

Stability is guaranteed at values

Q ≥ 22 µF and an ESR of ≤ 3 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 includes a number of internal circuits for protection against:

•

Overload

•

Overtemperature

•

Reverse polarity

TLE4274 数据表(PDF) 2 Page - Infineon Technologies AG