TLE4471 Datasheet, PDF (17/26 Pages) Infineon Technologies AG – Triple Voltage Regulator

TLE 4471
Application Information
V_BAT KL. 30
Ignition KL. 15
Enable-Signal
Q2
I
Tracking
Output 2
REF2
Main
Q1
DR
RADJ
Watchdog /
Reset
DW
R
W
E1
Enable
E2
E3
Logic
Tracking
Output 3
EN
REF3
Q3
optional
Sensor /
Peripheral
AD
Controller
AD
Sensor /
Peripheral
AES02867
Figure 4 Application Diagram
Input
With an input voltage between 5.5 V < V_I < 40 V the regulator works in its normal
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 1V/µs an input
capacitor is needed. Using a resistor of approx. 1Ω in series to the input capacitor, the
oscillating circuit consisting of input inductance and input capacitor is damped.
Data Sheet Rev. 1.1
17
2001-09-06