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L9678P датащи(PDF) 173 Page - STMicroelectronics

номер детали L9678P
подробное описание детали  Automotive user configurable airbag IC
PDF  203 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9678P датащи(HTML) 173 Page - STMicroelectronics

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DocID029274 Rev 3
173/203
L9678P, L9678P-S
Electrical characteristics
202
Table 27. ER boost converter AC specifications
N°
Symbol
Parameter
Condition
Min
Typ
Max Unit
1FSW_ERBST
ERBOOST switching
frequency
-
1.8
1.882
2.0
MHz
2
TRISE_ERBSTSW_SLOW
TFALL_ERBSTSW_SLOW
ERBSTSW transition time
10% to 90% voltage on
ERBSTSW
VIN ≥ VINFASTSLOPE_L =
10.3 V
Iload = 60mA
ERboost settings 23 V
Guaranteed by design
10
15
-
25
35
ns
3
TRISE_ERBSTSW_FAST
TFALL_ERBSTSW_FAST
10% to 90% voltage on
ERBSTSW
VIN ≤ VINFASTSLOPE_H=
9 V
Iload=60mA
ERboost settings 23 V
Guaranteed by design
10
-
25
ns
4TON_ERBST
ERBOOST charge-up time
CERBOOST = 2.2µF,
Vin =12V, IO_ERBST=
5mA
BST33V = 1
Measured from CS edge
to VO_ERBST(min)
--
5
ms
5TFLT_TSD_ERBST
Thermal shutdown filter time -
-
10
µs
Table 28. ER boost converter external components (Design Info)
N°
Symbol
Parameter
Condition
Min
Typ
Max
Unit
1LERBST
Inductance
-
8
10
-
µH
2ESLERBST
Inductance resistance
-
-
-
0.1
Ω
3CBLK_ERBST
Output bulk capacitance
to ensure regulator
stability
Min capacitance value including
derating factors
12.2
µF
4
ESRCBLK_ERBST Bulk capacitor ESR
-
-
-
0.1
5VFSTR_ERBST
Steering diode forward
voltage
IF=100 mA
-
-
0.85
V
6ILKGSTR_ERBST
Steering diode reverse
leakage
Ta = 95 °C
-
-
100
µA



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