Data Sheet

14

Rev. 1.6, 2009-02-03

TLE 4471

Application Information

Figure 4

Application Diagram

Input

With an input voltage between 5.5 V <

V

operating range. If the input voltage exceeds the 40 V up to 60 V for less than 400 ms,

e.g. caused by a load dump, the active components are switched off.

For compensating line influences and to avoid steep input edges above 1 V/

µs an input

capacitor is needed. Using a resistor of approx. 1

Ω in series to the input capacitor, the

oscillating circuit consisting of input inductance and input capacitor is damped.

AES02867

Tracking

Output 2

I

Q2

REF2

DR

Main

Watchdog /

Reset

Q1

RADJ

R

W

Enable

Logic

E2

DW

E1

E3

EN

Tracking

Output 3

REF3

Q3

AD

AD

Sensor /

Peripheral

Sensor /

Peripheral

Enable-Signal

Ignition KL.

V

15

30

Controller

optional