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L9679P Datasheet(PDF) 220 Page - STMicroelectronics

Part # L9679P
Description  Automotive advanced airbag for mid/high end applications and cut-off battery IC
PDF  279 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9679P Datasheet(HTML) 220 Page - STMicroelectronics

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Applications
L9679P
220/279
DS11627 Rev 7
17
Applications
The main applications for this IC are two:
as advanced user configurable airbag IC
as pyro fuse manager IC
17.1
Application circuit
Figure 70. Application circuit
SFx
SRx
S
ACL
DCSx
RSUx
WSx
FENL
D3
GPODx
GPOSx
ARMx
C7
C37÷C45
C8
C9
L2
L3
L4
C11
C12
D4
C20÷C27
C28÷C35
C36
C46÷C47
C48÷C49
C10
L9679P
D7÷D10
VSF
Regulator
VSF
D1
ERBSTSW
ERBOOST
VER
BATT
ER
BOOST
ER Charge/Discharge
and ER cap Diag
ER
Switch
Battery
Monitor
C6
R2
VBATMON
VIN
C1
C2
R1
L1
C3
D2
C4
C5
C13
Q1
R3
D5
D6
C14
C16÷C19
SSxy
LOAD
VDD
Regulator
VINT3V3
Regulator
Wake-up
Oscillators
Logic
Block
GNDSUBx
SYNC
BOOST
WAKEUP
GNDSUBx
SYNCBSTSW
BSTGND
SYNCBOOST
SAT
BUCK
VCC
BUCK
SATBCKSW
SATGND
SATBCK
VCCBCKSW
BATT
VCC
R4
D11
R14
IGN
CVDD
GNDD
GPO
Driver
System control & configuration
Safing
Logic
VCCGND
uC_FLEN
uC_DIAGEN
R6
R11
R7÷R10
R12
Q2
PUMD15
C15
R5
ERBOOST
Close after
power-up
R13
Q3
D12



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