Datasheet

Current generators characteristics STP16CPC26
16/26 Doc ID 18469 Rev 4
9.2 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) and ± 6% (maximum) current accuracy
between ICs.
9.3 Generators voltage drop
In order to correctly regulate the current, a minimum dropout voltage must be assured
across the current generators.
Figure 17 and Table 9 provides just an indicative idea about the dropout voltage to assure
over the current range. However it is recommended to use value of V
DROP
slightly higher
than those indicated in Figure 17 and Table 9.
Figure 17. Dropout voltage vs output current
Table 9. Dropout voltage vs output current
Output current [mA] V
DROP
@ 3.3V [mV] V
DROP
@ 5V [mV]
54444
10 85 85
20 170 170
40 350 330
60 530 500
90 820 770
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