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STAP08DP5XTTR Datasheet(PDF) 22 Page - STMicroelectronics

Part # STAP08DP5XTTR
Description  Low voltage 8-bit constant current LED sink driver with output error detection for automotive applications
PDF  28 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STAP08DP5XTTR Datasheet(HTML) 22 Page - STMicroelectronics

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Detection mode functionality
STAP08DP05
22/28
DocID024305 Rev 6
10.4
Error detection conditions
VDD = 3.3 to 5 V temperature range 25 °C.
Note:
Where: IO = the output current programmed by the REXT, IODEC = the detected output
current in detection mode.
Table 14. Detection conditions
Configuration
Detect mode
Detection results
SW-1 or SW-3b
Open line or output
short to GND detected
==> IODEC ≤ 0.5 x IO
No error
detected
==> IODEC ≥ 0.5 x IO
SW-2 or SW-3a
Short on LED or short
to V-LED detected
==> VO ≥ 2.5V
No error
detected
==> VO ≤ 2.2 V
Figure 20. Detection circuit
AM13662V1
STAP08DP05
V-LED
V-LED
SW-2
SW-3a
SW-3b
SW-1
OUT-0
12
4
3
5



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