Datasheet

Data Sheet BTS555
Infineon Technologies AG 7 2010-June-01
Truth Table
Input
current
Output Current
Sense
Remark
level
level I
IS
Normal
operation
L
H
L
H
0
nominal
=I
L
/ k
ilis
, up to I
IS
=I
IS,lim
Very high
load current
H H I
IS, lim
up to V
ON
=V
ON(Fold back)
I
IS
no longer proportional to I
L
Current-
limitation
H H 0
V
ON
> V
ON(Fold back)
if V
ON
>V
ON(SC)
, shutdown will occure
Short circuit to
GND
L
H
L
L
0
0
Over-
temperature
L
H
L
L
0
0
Short circuit to
V
bb
L
H
H
H
0
<nominal
22)
Open load L
H
Z
23
)
H
0
0
Negative output
voltage clamp
L L 0
Inverse load
current
L
H
H
H
0
0
L = "Low" Level
H = "High" Level
Overtemperature reset via input: I
IN
=low and T
j
< T
jt
(see diagram on page 15)
Short circuit to GND: Shutdown remains latched until next reset via input (see diagram on page 14)
22)
Low ohmic short to V
bb
may reduce the output current I
L
and can thus be detected via the sense current I
IS
.
23)
Power Transistor "OFF", potential defined by external impedance.
Terms
PROFET
V
IN
IS
OUT
bb
V
IN
I
IS
I
IN
V
bb
I
bb
I
L
V
OUT
V
ON
2
4
3
1,5
R
IS
V
IS
V
bIN
R
IN
D
S
V
bIS
Two or more devices can easily be connected in
parallel to increase load current capability.
R
ON
measurement layout (straight leads)
Sense
V force contacts Out Force
bb
contacts
5.5 mm
contacts
(both out
pins parallel)
≤