LED2472G datasheet(27/39 Pages) STMICROELECTRONICS

tên linh kiện	LED2472G

Giải thích chi tiết về linh kiện	24-channels LED driver with error detection and gain control

PDF	39 Pages

Scroll/Zoom	100%

nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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27 / 39 page

DocID024620 Rev 3

27/39

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)

x = 0 for RED, x = 1 for GREEN, x = 2 for BLUE

G-y to G-z (2)

y = 0 & z = 5 for RED, y = 6 & z = 11 for GREEN, y = 12 & z = 17 for BLUE

LED current(3) [mA]

The indicated values may be slightly different on the actual device

Low

000000

111111

High

000000

111111

Low

000000

111111

High

000000

111111

Low

000000

111111

High

000000

111111

_ default

step

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