Data Sheet

25

Rev. 1.1 2015-11-02

TLS810D1EJ/LDV50

Application Information

6

Application Information

Note: The following information is given as a hint for the implementation of the device only and shall not be

regarded as a description or warranty of a certain functionality, condition or quality of the device.

6.1

Application Diagram

Figure 9

Application Diagram

6.2

Selection of External Components

6.2.1

Input Pin

The typical input circuitry for a linear voltage regulator is shown in the application diagram above.

A ceramic capacitor at the input, in the range of 100 nF to 470 nF, is recommended to filter out the high

frequency disturbances imposed by the line e.g. ISO pulses 3a/b. This capacitor must be placed very close to

the input pin of the linear voltage regulator on the PCB.

An aluminum electrolytic capacitor in the range of 10 µF to 470 µF is recommended as an input buffer to

smooth out high energy pulses, such as ISO pulse 2a. This capacitor should be placed close to the input pin of

the linear voltage regulator on the PCB.

An overvoltage suppressor diode can be used to further suppress any high voltage beyond the maximum

rating of the linear voltage regulator and protect the device against any damage due to over-voltage.

The external components at the input are not mandatory for the operation of the voltage regulator, but they

are recommended in case of possible external disturbances.

TLS810D1

Q

I

EN

RO

D

Regulated

Output Voltage

IQ

CQ

1μF

CD

100nF

Supply

100nF

10μF

CI1

CI2

<45V

DI2

II

GND

e.g. Ignition

Load

(e.g.

Micro

Controller)

GND

RRO

DI1