BTS 640 S2
21
Figure 8b: Current sense ratio :
Figure 8a: Current sense versus load current:
15000
k
ILIS
1.3
[mA]
1.2
I
IS
1.1
1
10000
5000
0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
I
[A]
L
I
L
0
1 2 3 4 5 6 7 8 9 10 11 12 13
[A]
6
0
1
2
3
4
5
Figure 9a: Output voltage drop versus load current:
V
[V]
ON
0.2
R
ON
0.1
0.0
V
ON(NL)
I
L
[A]
0
1
2
3
4
5
6
7
8
21
This range for the current sense ratio refers to all
devices. The accuracy of the kILIS can be raised at
least by a factor of two by matching the value of
k
ILIS for every single device.
Semiconductor Group
Page 14
2003-Oct-01
INFINEON [ Infineon ]
