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LED2472G 数据表(PDF) 27 Page - STMicroelectronics

部件名 LED2472G
功能描述  24-channels LED driver with error detection and gain control
PDF  39 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

LED2472G 数据表(HTML) 27 Page - STMicroelectronics

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LED2472G
Current adjustment
The recommended resistor values to cover the above mentioned current range are 11-
18 kΩ, which respectively define the following ranges:
The current values in bold in the Table 12 are the current default values. The above
mentioned resistor values are not mandatory, but only suggested to cover precisely the
current range indicated for this device. Due to internal power dissipation, it is important to
highlight that, loading at the maximum current of all device channels simultaneously can
cause a current shift for each output. In the worst case, with all channels loaded at the
maximum current of about 72 mA, the regulated current could decrease in the range of
about 3-5%.
Table 12. Current adjustment example
Range
RSET [kΩ]CFG-x
(1)
1.
x = 0 for RED, x = 1 for GREEN, x = 2 for BLUE
G-y to G-z (2)
2.
y = 0 & z = 5 for RED, y = 6 & z = 11 for GREEN, y = 12 & z = 17 for BLUE
LED current(3) [mA]
3.
The indicated values may be slightly different on the actual device
Low
18
0
000000
4
18
0
111111
15
High
18
1
000000
11
18
1
111111
44
Low
13
0
000000
5
13
0
111111
21
High
13
1
000000
15
13
1
111111
61
Low
11
0
000000
6
11
0
111111
25
High
11
1
000000
18
11
1
111111
72
21
_ default
OL
step
I
I
=
Δ



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