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L9945 データシート(PDF) 5 Page - STMicroelectronics

部品番号 L9945
部品情報  Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems
PDF  151 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9945 データシート(HTML) 5 Page - STMicroelectronics

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Figure 3. Example of High-Side configuration with PMOS on channel 5
Note: the freewheeling diode is needed only in case of inductive load.
BATT56
HS PMOS
GNSP5
GND
VBATT
OUT5
GND
GND
GND
SNGP5
DRN5
RG
RPU
CBATT
RSH
CM
RM
GADG2302171301PS
DFW
CESD
PGND56
The picture below shows an example of Low-Side configuration with NMOS transistor on channel 3. Refer to this
schematic in order to understand how the external FET must be mounted with respect to the DRNx/GNSPx/
SNGPx/PGNDx pins.
Figure 4. Example of Low-Side configuration with NMOS on channel 3
GADG2302170929PS
BATT34
LS NMOS
DRN3
VBATT
GNSP3
SNGP3
RG
RPD
CM
RM
RSH
GND
GND
DFW
CESD
PGND34
Note: the freewheeling diode is needed only in case of inductive load.
L9945
High-Side / Low-Side, with configurable FET type (N channel or P channel)
DS12275 - Rev 8
page 5/151



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