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L9396 Datasheet(PDF) 59 Page - STMicroelectronics

Part # L9396
Description  Automotive multiple power supply IC
PDF  109 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9396 Datasheet(HTML) 59 Page - STMicroelectronics

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DS12539 Rev 10
59/109
L9396
Remote sensor interface
109
ground with a resistance ≤ 7 kΩ will be detected as short condition while a short with a
resistance ≥ 19 kΩ will not be detected. This kind of diagnostic is present only when channel
is in OFF state.
The current sense is carried out in the low side through RSULx(x=0,1,2,3). The sensor
interface implements either the detection of a leakage to battery or RSUHx condition, that
will possibly raise the sensor current level. The channel in this condition is not shutdown.
5.4
Electrical characteristics
Table 41. WSS configuration
Symbol
Parameter
Conditions
Min
Typ
Max
Units
CRSUHx
RSUHx load
capacitance
Design Information
6
-
-
nF
CRSULx
RSULx capacitance
Design Information
-
-
30.8
nF
RRSUx
Output resistance
High side + low
side Up to ILIMTH
4.75
-
30
Ω
IBO
Base Current
Auto-adjusting
option (default
value)
-9%
7
+9%
mA
ITH1
7 mA / 14 mA detection
-
-9%
9.8
+9%
mA
ITH2_RISE
14 mA / 28 mA rising
edge detection
-
-9%
19.8
+9%
mA
ITH2_FALL
14 mA / 28 mA falling
edge detection
-
-9%
13.6
+9%
mA
ITHOPEN
Open sensor detection
VRSULx=OPEN
1.0
-
3.5
mA
tOPEN_DET
Open sensor detection
filter time
-
11
-
15
µs
ITHVBATP
RSUL leakage to VBATP
or RSUHx threshold
VRSULx= VRSUHx,
-15%
23
+15%
mA
tLEAKBAT_DET
RSUL leakage to VBATP
or RSUHx filter time
-
97
-
110
µs
ILIMTHHS
Output Current Limit
High side
-80
-
-33
mA
tILIMTHHS
HS overcurrent
detection filter time
-
350
-
650
µs
IOCTHHS
Overcurrent threshold
High side
-80
-
-31
mA
ILIMTHLS
Output Current Limit
Low side
35
-
80
mA
tILIMTHLS
LS overcurrent detection
filter time
-
350
-
650
µs
IOCTHLS
Overcurrent threshold
Low side
35
-
80
mA
tRSUHxSTB
RSUHx short to Battery
detection filter time
-
11
-
15
µs
VRSUHxSTB
Output Short to Battery
Threshold
Versus VPREREG
10.0
-
100
mV



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