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L99LD01 Datasheet(PDF) 11 Page - STMicroelectronics

Part # L99LD01
Description  High efficiency constant current LED driver for automotive applications
PDF  69 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L99LD01 Datasheet(HTML) 11 Page - STMicroelectronics

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DocID025319 Rev 3
11/69
L99LD01
Functional description
68
Figure 3. Operating modes, main states
Table 2. Limp home mode: recovery paths
Transition
Root cause
Action to get back to
normal mode
Response in the
next SPI command
Normal mode
Limp Home VCC1 on
WD timeout
(1st or 2nd WD timeout)
Read and clear status1
AND WD trigger
Fail Safe bit = 0
WD_Fail bit = 0
VCC1 < VCC1_TH for more than
2ms
Fail Safe bit = 0
Vcc1_Uv_To bit = 0
SDI stuck at 0 or 1
Fail Safe bit = 0
SDI_Stuck@ = 0



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