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L9918 Datasheet(PDF) 69 Page - STMicroelectronics

Part # L9918
Description  Alternator voltage regulator with LIN interface for 12 V applications
PDF  109 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9918 Datasheet(HTML) 69 Page - STMicroelectronics

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 69 / 109 page
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NVM register name
Definition
Notes
Description
#Bits Code
PWM_NRMAX
3
0x6
EXC duty cycle limitation at B+ > B+_lim during
phase regulation
TV = 43.0%
0x7
TV = 50.0%
DFM_FILTER_TP
3
0x0
13 ms
Filter time constant of EXC duty cycle monitor
0x1
26 ms
0x2
40 ms
0x3
53 ms
0x4
66 ms
0x5
80 ms
0x6
93 ms
0x7
106 ms
BF_FILT
3
0x0
filter time constant tau =
0.8 ms
B+ filter constant of the regulation parameter while
P_ANT is used
0x1
filter time constant tau =
1.7 ms
0x2
filter time constant tau =
2.5 ms
0x3
filter time constant tau =
3.3 ms
0x4
filter time constant tau =
4.2 ms
0x5
filter time constant tau =
5.0 ms
0x6
filter time constant tau =
5.8 ms
0x7
filter time constant tau =
6.7 ms
BF_FILT2
3
0x0
filter time constant tau =
0.8 ms
B+ filter constant of the regulation parameter while
P_ANT2 is used
0x1
filter time constant tau =
1.7 ms
0x2
filter time constant tau =
2.5 ms
0x3
filter time constant tau =
3.3 ms
0x4
filter time constant tau =
4.2 ms
0x5
filter time constant tau =
5.0 ms
0x6
filter time constant tau =
5.8 ms
0x7
filter time constant tau =
6.7 ms
IFELD_FILTER
3
0x0
IFELD_FILTER_SEL
Time constant of the EXC current filter measurement
0x1
filter time constant tau =
160 ms
0x2
filter time constant tau =
66 ms
L9918
NVM parameters table
DS13000 - Rev 2
page 69/109



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