STP16CPC26

Current generators characteristics

Doc ID 18469 Rev 4

15/26

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

Figure 16.

Output current vs R-EXT resistor

Table 8.

Recommended values of Rext for some output current value

Output current [mA]

Closer standard value (E24 series) [

Ω]

5

4129

4300

10

2005

200

20

999

1000

40

471

470

60

322

330

90

217

220