Datasheet
Table Of Contents
BTS441RG
Data sheet 10 Rev. 1.21, 2012-12-06
GND disconnect with GND pull up
-.
#$
Any kind of load. If V
GND
>
V
IN
- V
IN(T+)
device stays off
Due to V
GND
> 0, no V
ST
= low signal available.
V
bb
disconnect with charged inductive
load
-.
#$
For inductive load currents up to the limits defined by Z
L
(max. ratings and diagram on page 8) each switch is
protected against loss of V
bb
.
Consider at your PCB layout that in the case of Vbb dis-
connection with energized inductive load all the load current
flows through the GND connection.
Inductive load switch-off energy
dissipation
-.
#$
(
(
(
(
-
,
.
(
,
.
,
,
^
,
0
Energy stored in load inductance:
E
L
=
1
/
2
·L·I
2
L
While demagnetizing load inductance, the energy
dissipated in PROFET is
E
AS
= E
bb
+ E
L
- E
R
=
V
ON(CL)
·i
L
(t) dt,
with an approximate solution for R
L
> 0 Ω:
E
AS
=
I
L
·L
2
·R
L
(V
bb
+|V
OUT(CL)
|) (1+
I
L
·R
L
|V
OUT(CL)
|
)
Maximum allowable load inductance for
a single switch off
T
j,start
= 150°C, V
bb
= 12 V, R
L
=0Ω
L [mH]
4
44
444
4 " 4"4"4"
45
I
L
[A]