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L9680 Datasheet(PDF) 251 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) 251 Page - STMicroelectronics

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DS11615 Rev 7
251/286
L9680
Electrical characteristics
285
17.14
VCC regulator
All electrical characteristics are valid for the following conditions unless otherwise noted:
-40 °C  Ta  +95 °C, VINGOOD0  VIN  35 V, VSATBCK_OK  SATBUCK
VUV_VCOREMON  VCOREMON  VOV_VCOREMON
Table 49. SATBUCK converter AC specifications
No
Symbol
Parameter
Conditions
Min
Typ Max Units
1
FSW_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
4 TSOFTST_SATBCK SATBUCK soft start time
From 10% to 90%
0.50
-
2
ms
Table 50. SATBUCK converter external components design info
No
Symbol
Component
Conditions
Min
Typ
Max
Unit
1
LSATBCK
Inductance
Min 4.7 µH nominal
3.76
-
-
µH
2
ESRLSATBCK
Inductance Resistance
-
-
-
0.25
Ω
3
CBLK_SATBCK
Output Bulk Capacitance
Min 4.7 µH nominal
3
-
30
µF
4
ESRCBLK_SATBCK Bulk Capacitor ESR
-
-
-
50
mΩ
Table 51. VCC regulator DC specifications
No
Symbol
Parameter
Conditions
Min
Typ
Max Units
1
VO_VCC
VCCBUCK Output
Voltage
Across all line and load,
steady state
VCCSEL < VTH2_L_VCCSEL
3.20
3.3
3.40
V
2
Across all line and load,
steady state
VCCSEL = > VTH2_H_VCCSEL
4.85
5
5.15
V



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