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L9680 Datasheet(PDF) 258 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) 258 Page - STMicroelectronics

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Electrical characteristics
L9680
258/286
DS11615 Rev 7
Figure 73. Deployment drivers diagram
GAPGPS01153
ESD/EMI Protection
Squib EMI
Protection
Squib Load
R_Squib
L_EMI
L_CS1
R_CS1
L_CS2
R_CS2
Clock Spring
Impedance
System Wiring Impedance
R_Wire 1
Wire Lenght (m)
kL_CS1 - L_CS2
L_Wire 1
R_Wire 2
L_Wire 2
C_SFx
SFx
SRx
C_SRx
Table 57. Deployment drivers – AC specifications
No
Symbol
Parameter
Conditions
Min
Typ
Max Unit
1
TDEPL
Deployment time
DCR_x(Dep_Current) =
IDEPL_LO ≥1.209A rising to
1.209A falling;
TDEPL =
DCR_x(Deploy_Time)*
TDEP_TIME_RES - TDEL_IDEP
-
DCR_
x(Depl
oy_Ti
me)*
TDEP
_TIM
E_RE
S - 65
-
-
DCR
_x(D
eploy
_Tim
e)*
TDEP
_TIME
_RES -
ms
2
3
4
TDEP_TIME_RES
DCR_x Deploy_Time
resolution
-
-
-
µs
5
TDEP_CC_RES
Deployment current counter
resolution
-
-
-
µs
6
TRISE_IDEPL
Rise time
10% - 90% of IDEPL
SSxy = 25 V,
RSQ = 2.2 ohm,
C = 22 nF L = 44 µH
-
-
32
µs
7
TDEL_IDEP
Delay time
SPI_CS to 90% IDEPL
-
-
65
µs
8
TFALL_IDEPL
Fall time
90% - 10% IDEPL
-
-
32
µs
9
TDEL_SD_LS
Low-side shutdown delay
time
(with respect to high-side
deactivation)
-
50
-
-
µs
1024
fosc
-------------
256
fosc
----------



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