Data Sheet

19

Rev. 2.1, 2007-05-30

TLE7189F

Note: All errors do NOT lead to sleep mode. Sleep mode is only initiated with the INH pin. The latch and restart

behavior allows to distinguish between the different error types combined at the ERR signals.

Table 4

Priorisation of Errors

Reset of ERROR registers and Disable

The TLE7189F can be reset with the help of the enable pin ENA. If the ENA pin is pulled to low for a specified

minimum time, the error registers are cleared and the external MOSFETs are switched off actively.

During disable only the errors under voltage shut down and over temperature warning are shown. Other errors are

not displayed.

5.2.8

Electrical Characteristics

Over temperature warning Self clearing

Nothing

VCC check

Latch, reset must be performed at ENA pin All external Power -MOSFETs

Error condition

restart behavior

Shuts down...

Priority

Error

1

VCC check

2

Short circuit detection

3

Under voltage detection

4

Over voltage detection

5

Over temperature

Electrical Characteristics - Protection and diagnostic functions

V

(unless otherwise specified)

Pos.

Parameter

Symbol

Limit Values

Unit

Conditions

Min.

Typ.

Max.

Over temperature

5.2.1

Over temperature warning

T

j(OW)

135

155

175

°C

–

5.2.2

Hysteresis for over temperature

warning

dT

j(OW)

–20

–

°C

–

Short circuit detection

5.2.3

Filter time of short circuit protection

t

SCP(off)

8

1216µs

Default

5.2.4

D

SCDmax

––30

%

f

or ILx and at static

applied SC

5.2.5

minimum duty cycle for periodic

SCD1)

D

SCDmin

70

––%

f

IHx or ILx and at

static applied SC

5.2.6

Voltage range on VSCD pin to

adjust the Vds limit

V

SCDLa1

0.7

–

2.5

V

Short circuit

detection is active

5.2.7

Short circuit detection level

V

SCDLa2

2.64

–

3.63

V

Short circuit

detection is active

V