TLE4264-2 datasheet(6/11 Pages) INFINEON

6 / 11 page

Data Sheet

Rev. 2.6, 2008-03-10

TLE 4264-2

Application Information

Figure 3

Application Circuit

In the TLE 4264-2 the output voltage is divided and compared to an internal reference of

2.5 V typical. The regulation loop controls the output to achieve an output voltage of 5 V

with an accuracy of

±3% at an input voltage range of 5.5 V < V

I < 45 V.

Figure 4 shows a typical application circuit. For stability of the control loop the

TLE 4264-2 output requires an output capacitor

Q of at least 10 µF with a maximum

permissible ESR of 4

Ω. Tantalum as well as multi layer ceramic capacitors are suitable.

At the input of the regulator an input capacitor is necessary for compensating line

influences (100 nF ceramic capacitor recommended). A resistor of approx. 1

Ω in series

with

I, can damp any oscillation occurring due the input inductivity and the input

capacitor.

In the application circuit shown in Figure 4 an additional electrolytic input capacitor of

470

µF is added in order to buffer supply line influences. This capacitor is recommended,

if the device is sourced via long supply lines of several meters.

The TLE 4264-2 can supply up to 150 mA. However for protection for high input voltage

above 25 V, the output current is reduced (SOA protection).

AES02871

TLE 4264-2

Output

GND

10 F

Input

5.5 to 45 V

100 nF

470 F

TLE4264-2 Datasheet(PDF) 6 Page - Infineon Technologies AG