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L9945 Datasheet(PDF) 129 Page - STMicroelectronics

Part # L9945
Description  Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems
PDF  144 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9945 Datasheet(HTML) 129 Page - STMicroelectronics

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Figure 37. OFF state output regulator for OL detection. Example of operation on HS
GADG1303171115PS
BATT12
HS NMOS
DRN1
VBATT
GNSP1
SNGP1
RG
RPD
CM
RM
GND
DFW
CBATT
GND
GND
CEMI
GND
OUT1
VOUT_OL
GND
V3V3A
Device side
Board side
IDIAG
IFAST_DIS
Vout V
≈ OUT_OL
GND
V3V3A
VOL
IN
<tDIAG
CK
t
1
GND
IFAST_DIS
ON OFF
1  0
RES
EN
R
S
Q
Vout
deglitch
EN
Figure 38. OFF state output regulator for OL detection. Example of operation on LS
BATT34
LS NMOS
DRN3
VBATT
GND
D1
ESH2D
CESD
OUT3
VOUT_OL
GND
V3V3A
Device side
Board side
IDIAG
IFAST_CHG
Vout V
≈ OUT_OL
GND
V3V3A
V3V3A
VLVT
IN
<tDIAG
CK
t
1
IFAST_CHG
ON OFF
1  0
RES
EN
R
S
Q
Vout
deglitch
EN
GNSP3
SNGP3
PGND14
RG
RPD
CM
RM
GADG1303171127PS
L9945
Safety & diagnostics
DS12275 - Rev 10
page 129/144



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