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L99LD21 Datasheet(PDF) 37 Page - STMicroelectronics

Part # L99LD21
Description  High power LED driver for automotive applications
PDF  73 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L99LD21 Datasheet(HTML) 37 Page - STMicroelectronics

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DS11130 Rev 5
37/73
L99LD21
SPI functional description
72
Table 18. Constant VLED x TOFF selection
VLED_TOFF
Constant VLED x TOFF [V x µs]
0000
10
0001
12
0010
14
0011
16
0100
18
0101
20
0110
22
0111
24
1000
28
1001
32
1010
36
1011
40
1100
48
1101
56
1110
64
1111
72
Table 19. DIN map table for Buck Cell X
DIN_MAP X
Status of Buck Cell X
00
Always OFF
01
PWM dimming
10
Always ON
11
Controlled by DIN
Table 20. Boost clock selection
BST_FREQ
Boost clock [kHz]
000
100
001
151.5
010
200
011
250
100
303
101
357
110
400
111
454.5



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