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L9679P Datasheet(PDF) 238 Page - STMicroelectronics

No. de pieza L9679P
Descripción Electrónicos  Automotive advanced airbag IC for mid/high end applications
PDF  272 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9679P Datasheet(HTML) 238 Page - STMicroelectronics

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Electrical characteristics
L9679P
238/272
DocID029275 Rev 1
15
IOCN_LS_SATBCK_HI Low side negative
over current
detection
VSATBCKSW = 0
LOW_POWER_MODE = 0
0.94
1.25
1.56
A
16
IOCN_LS_SATBCK_LO
VSATBCKSW = 0
LOW_POWER_MODE = 1
0.64
0.85
1.06
A
17
VSATBCK_OK_LOW
SATBUCK voltage
threshold
SYS_CTL(SAT_V) = 0
6.2
6.5
6.8
V
18
VSATBCK_OK_HIGH
SYS_CTL(SAT_V) = 1
7.7
8.1
8.5
V
Table 47. SATBUCK converter DC specifications
No
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Table 48. SATBUCK converter AC specifications
No
Symbol
Parameter
Conditions
Min
Typ
Max Units
1FSW_SATBCK
SATBUCK switching
frequency
-
1.8
1.882
2.0
MHz
2
TRISE_SATBCKSW
_SLOW
TFALL_SATBCKSW
_SLOW
SATBCKSW transition time
10% to 90% voltage on
SATBCKSW
VSYNCBST <
VSYNCBST_RESTART_TH
Design Info
10
-
25
ns
3
TRISE_SATBCKSW
_FAST
TFALL_SATBCKSW
_FAST
10% to 90% voltage on
SATBCKSW
VSYNCBST >
VSYNCBST_RESTART_TH
Design Info
5-
15
4TSOFTST_SATBCK SATBUCK soft start time
From 10% to 90%
0.50
-
2
ms
Table 49. SATBUCK converter external components design info
No
Symbol
Component
Conditions
Min
Typ
Max
Unit
1LSATBCK
Inductance
Min 4.7 μH nominal
3.76
-
-
μH
2
ESRLSATBCK
Inductance Resistance
-
-
-
0.25
Ω
3CBLK_SATBCK
Output Bulk Capacitance
Min 4.7 μH nominal
3
-
30
μF
4
ESRCBLK_SATBCK Bulk Capacitor ESR
-
-
-
50
mΩ



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