STP16CPC26MTR(2013) 查看數據表（PDF） - STMicroelectronics

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STP16CPC26MTR
(Rev.:2013)

Low voltage 16-bit constant current LED sink driver

STMicroelectronics 

STP16CPC26

Current generators characteristics

9

Current generators characteristics

9.1

Current setting

The current of all outputs is programmed through an external resistor connected to R-EXT

pin, as shown in Figure 15.

The curve in Figure 16 describes the relation between the current and the resistor

connected to R-EXT pin, whereas the Table 8 shows how to set some typical current values.

Figure 15. Resistor for current programming

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Figure 16. Output current vs R-EXT resistor

































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Table 8. Recommended values of Rext for some output current value

Output current [mA]

Rext [Ω]

Closer standard value (E24 series) [Ω]

5

4129

4300

10

2005

200

20

999

1000

40

471

470

60

322

330

90

217

220

Doc ID 18469 Rev 4

15/26

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