TLE9271QX datasheet(13/126 Pages) INFINEON

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TLE9271QX

General Product Characteristics

Datasheet

Rev.1.5

2019-09-27

4.2

Functional Range

Note: Within the functional range the IC operates as described in the circuit description. The electrical

characteristics are specified within the conditions given in the related electrical characteristics table.

Device Behavior Outside of Specified Functional Range:

• 28V < VS,func < 40V: Device will still be functional; the specified electrical characteristics may not be ensured

anymore. The Buck and VCC2 will work, however, a thermal shutdown may occur due to high power

dissipation. The specified SPI communication speed is ensured. The absolute maximum ratings are not

violated, however the device is not intended for continuous operation of VS >28V. Operating the device at

high junction temperatures for prolonged periods of time may reduce the life of the device.

• 18V < VLIN <28V: The LIN transceiver is still functional. However, the communication may fail due to out-of-

LIN-spec operation;

• VLIN,UVD < VLIN < 5.5V: The LIN transceiver is still functional. However, the communication may fail due to

out-of-LIN-spec operation;

• VCAN < 4.75V: The undervoltage bit VCAN_UV will be set in the SPI register BUS_STAT_1 and the transmitter

will be disabled as long as the UV condition is present;

• 5.25V < VCAN < 5.50V: CAN transceiver still functional. However, the communication may fail due to out-of-

spec operation;

• VPOR,f < VS < 5.5V: Device will be still functional; the specified electrical characteristics may not be ensured

anymore:

– The voltage regulators will enter the low-drop operation mode;

–A VCC1_UV reset could be triggered depending on the Vrtx settings;

– The LIN transmitter will be disabled if VLIN < VLIN,UVD is reached and VLIN_UV bit on SUP_STAT is set;

– FOx outputs will remain ON if they were enabled;

– The specified SPI communication speed is ensured.

Table 2

Functional Range

Parameter

Symbol

Values

Unit Note or

Test Condition

Number

Min.

Typ.

Max.

Supply Voltage

VS,func

VPOR

–28

1) VPORseesection

Chapter 13.9

1) Including Power-On Reset, Over- and Under voltage Protection

P_4.2.1

LIN Supply Voltage (VLIN

pin)

VREF,LIN

5.5

–

P_4.2.2

CAN Supply Voltage

VCAN

4.75

–

5.25

–

P_4.2.3

CFG external pull-up

RCFG

–

kΩ

–P_4.2.6

SPI frequency

fSPI

––4

MHz

see

Chapter 14.7 for

fSPI,max

P_4.2.4

Junction Temperature

-40

–

150

°C

–

P_4.2.5

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