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L9680 Datasheet(PDF) 227 Page - STMicroelectronics

Part # L9680
Description  Automotive advanced airbag for mid/high end applications and cut-off battery IC
PDF  286 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9680 Datasheet(HTML) 227 Page - STMicroelectronics

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DS11615 Rev 7
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L9680
Applications
285
16
Applications
The main applications for this IC are two:
as advanced user configurable airbag IC
as pyro fuse manager IC
16.1
Application circuit
Figure 71. Application circuit
SFx
SRx
ACL
DCSx
RSUx
R
WSx
D3
GPODx
GPOSx
ARMx
C7
C8
C9
L2
L3
L4
C11
C12
D4
C46
C10
L9680
VSF
Regulator
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
SSxy
LOAD
VDD
Regulator
VINT3V3
Regulator
Wake-up
Oscillators
Logic
Block
GNDSUBx
SYNC
BOOST
WAKEUP
GNDSUBx
SYNCBSTSW
BSTGND
SYNCBOOST
SATBCKSW
SATGND
SATBCK
VCCBCKSW
VCC
IGN
CVDD
GNDD
GPO
Driver
System control & configuration
Safing
Logic
VCCGND
MCUFAULTB
VCOREMON
C22÷C33
C34÷C45
C47÷C55
C56÷C59
C60÷C63
D7÷D12
C16÷C21
Q1
R3
D5
D6
R4
uC_FLEN
R6
uC_DIAGEN
R13
R7÷R12
R14
Q2
C14
C13
R5
PUMD15
SAT
BUCK
VCC
BUCK
C15
ERBOOST
Close after
power-up
R15
Q3
D13



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