STP16CPC26PTR 查看數據表（PDF） - STMicroelectronics
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STP16CPC26PTR Datasheet PDF : 28 Pages
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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 14: "Resistor for current programming". The curve in Figure 15:
"Output current vs R-EXT resistor" describes the relation between the current and the
resistor connected to R-EXT pin, whereas the Table 8: "Recommended values of Rext for
some output current value" shows how to set some typical current values.
Figure 14: Resistor for current programming
Figure 15: Output current vs R-EXT resistor
9.2
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
Current accuracy
A typical current accuracy of ±1% (±3% maximum) between channels is guaranteed at 22
mA and 55 mA output current (refer to Table 6: "Switching characteristics") and ± 6%
(maximum) current accuracy between ICs.
DocID18469 Rev 6
15/28
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