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STP16DP05PTR Datenblatt(PDF) 21 Page - STMicroelectronics

Teilenummer STP16DP05PTR
Bauteilbeschribung  Low voltage 16-bit constant current LED Sink driver with outputs error detection
PDF  34 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STP16DP05PTR Datenblatt(HTML) 21 Page - STMicroelectronics

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STP16DPS05
Detection mode functionality
Doc ID 16538 Rev 2
21/34
Typical schematic used to perform the error detection:
Figure 20.
Error detection typical schematic
Using the follow formula is possible measure the Iodec
IODEC = (Vled-Vload) / Rload
The tables below shows the IODEC average value at 3.3 V and 5.0 V of power supply voltage.
The IODEC is the current value recognized by the devices output open error detection
Table 14.
IODEC average value at 3.3 V
Vdd (V)
Iset (mA)
Rext (
Ω)
Iout AVG (mA)
3.3
54270
2.097
10
2056
6.79
20
1006
10.46
50
382
26.92
80
251
35.03
Table 15.
IODEC average value at 5 V
Vdd (V)
Iset (mA)
Rext (
Ω)
Iout AVG (mA)
5
54270
1.98
10
2056
6.09
20
1006
9.67
50
382
25.54
80
251
38.9
DUT
Vled
Rload
IDEC
Out
REXT
Iset
Vdd
GND



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