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L9679P Datasheet(PDF) 244 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) 244 Page - STMicroelectronics

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Electrical characteristics
L9679P
244/279
DS11627 Rev 7
18
VCCUV3V
VCC under voltage
detection high
VCCSEL < VTH2_L_VCCSEL
3.0
-
3.17
V
19
VCCUV5V
VCCSEL > VTH2_H_VCCSEL
4.5
-
4.75
V
20
VCCUVL
VCC under voltage
detection low
-
1.8
2
2.2
V
Table 51. VCC regulator DC specifications (continued)
No
Symbol
Parameter
Conditions
Min
Typ
Max Units
Table 52. VCC converter AC specifications
No
Symbol
Parameter
Conditions
Min
Typ Max Units
1
FSW_VCCBCK
VCCBUCK switching
frequency
-
1.8
1.882 2.0
MHz
2
TRISE_VCCBCKSW
TFALL_VCCBCKSW
VCCBCKSW transition time
10% to 90% voltage on
VCCBCKSW
Design Info
8
-
20
ns
3 TSOFTST_VCCBCK VCCBUCK soft start time
From 10% to 90%
0.5
-
2
ms
4
TFLT_VCCOV
VCC over voltage
detection deglitch filter time
-
27
30
33
µs
5 TFLT_VCCOV_RAMPUP
VCC Over voltage
detection deglitch filter time
during VCC_RAMPUP state
VCC reg in VCC_RAMPUP
state
1.5
2
2.5
µs
6
TFLT_VCCUV
VCC under voltage
detection deglitch filter time
-
27
30
33
µs
7
TFLT_VCCUVL
VCC under voltage low
detection deglitch filter time
-
1.5
2
2.5
µs
Table 53. VCC converter external components design info
No
Symbol
Component
Conditions
Min
Typ
Max
Unit
1
LVCCBCK
Inductance
Min 4.7 µH nominal
3.76
-
-
µH
2
ESRLVCCBCK
Inductance resistance
-
-
-
0.25
Ω
3
CBLK_VCCBCK
Output bulk capacitance
Min 4.7 µF nominal
3
-
30
µF
4 ESRCBLK_VCCBCK Bulk capacitor ESR
-
-
-
50
mΩ



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