bts5235l Infineon Technologies Corporation, bts5235l Datasheet - Page 22

• Manufacturer Part Number: bts5235l
• Description: Smart High-side Power Switch
• Manufacturer: Infineon Technologies Corporation

Figure 16
4.3.2
Details about timings between the diagnosis signal
load current
state an external output pull-up resistor (
Figure 17
For calculation of the pull-up resistor, just the external leakage current
open load threshold voltage
I
There is no internal leakage current from out to ground at BTS 5235L.
minimum supply voltage at which the open load diagnosis in off state must be ensured.
To reduce the stand-by current of the system, an open load resistor switch (
recommended.
Data Sheet
R
leakage
OL
V
OUT
IN
IN
I
I
IS
=
I
IS
L
defines the leakage current in the complete system e.g. caused by humidity.
ON
V
---------------------------------------------------------- -
OFF
bb(min)
OFF-State Diagnosis
Open Load, pull-up resistor active
I
L
over load (current limitation)
ON
Timing of Diagnosis Signal in Over Load Condition
Timing of Diagnosis Signal in OFF-state
in OFF-state can be found in
I
–
t
leakage
d(fault)
V
t
sIS(OVL)
OUT(OL,max)
V
V
IS(fault)
V
OUT(OL)
IS(fault)
/ R
/ R
S
OFF
S
has to be taken into account.
R
OL
22
Figure
) is necessary.
over temperature
pull-up resistor
I
L(LIM)
Smart High-Side Power Switch
inactive
17. For open load diagnosis in OFF-
I
IS
and the output voltage
t
s(fault)
OFF
V1.0, 2005-12-19
I
leakage
V
BTS 5235L
bb(min)
Diagnosis
V
OverLoad.emf
SwitchOff.emf
OUT
and the
t
t
t
t
t
S
is the
OL
and
) is
(4)