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STP16DPS05 bảng dữ liệu(PDF) 19 Page - STMicroelectronics

tên linh kiện STP16DPS05
Giải thích chi tiết về linh kiện  Low voltage 16-bit constant current LED Sink driver with outputs error detection
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STP16DPS05 bảng dữ liệu(HTML) 19 Page - STMicroelectronics

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STP16DPS05
Detection mode functionality
Doc ID 16538 Rev 2
19/34
7.3
Phase three: “resuming to normal mode”
The sequence for re-entering in normal mode is showed in the following table and diagram:
Note:
For proper device operation the “Entering in detection” sequence must be follow by a
“resume mode” sequence, it is not possible to insert consecutive equal sequence.
7.4
Error detection conditions
VDD = 3.3 to 5 V temperature range -40 to 125 °C
Note:
Where: IO = the output current programmed by the REXT, IODEC = the detected output
current in detection mode
Figure 18.
Detection circuit
Figure 17.
Resuming to normal mode timing diagram
CLK
1°2°3°4°
5°
OE/DM2
HL
H
H
H
LE/DM1
LLLLL
Table 13.
Detection conditions
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 ≥ 2.4 V
No error detected
==> VO ≤ 2.2 V
16
STP16DP05



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