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