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L99LD20 Datasheet(PDF) 54 Page - STMicroelectronics

Part # L99LD20
Description  High power LED driver for automotive applications
PDF  61 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L99LD20 Datasheet(HTML) 54 Page - STMicroelectronics

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Electrical specifications
L99LD20
54/61
DS11366 Rev 3
5.4.6
Digital timings
Table 41. Digital timings description
Symbol
Parameter
Test conditions
Min
Typ
Max
Unit
tWD
Watchdog timeout
period
45
50
55
ms
tCSN_TIMEOUT
CSN timeout
90
115
140
ms
tAUTORESTART
Autorestart time in limp
home mode
45
50
55
ms
tVS,UV
VS undervoltage filter
time
32
µs
tDIN_FT
(1)
DIN Filter time
32
µs
tDIN_ST
DIN status information
time
12.8
µs
tSKEW
Timing skew for DIN
2.5
µs
tVSPI_FT
VSPI Filtering Time
32
µs
tWAKE_UP
Time for a complete
wake up (V3V3 >
VPOR_L)
CSN low or DIN high for
t > tWAKEUP
Cap on V3V3 = 4.7 µF
V3V3 > 3 V
190
µs
tSTDBY
Time needed for a
transition to standby
mode (V3V3 < VPOR_L)
DIN low
Cap on V3V3 = 4.7 µF
V3V3 < 2.5 V
1.6
ms
tOVT
Filtering time for
overtemperature (OVT
bit will be set if Tj >
TTSD for more than
tOVT)
guaranteed by
frequency oscillator
(20 MHz typical) and
scan
1.2
µs
1.
Digital timings guaranteed by scan. WD and autorestart timings limits added to give indication on application cases.



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