STAP16DPS05 Datasheet, PDF (21/34 Pages) STMicroelectronics – Low voltage 16-bit constant current LED sink driver

STAP16DPS05
Detection mode functionality
7.3
Phase three: “resuming to normal mode”
The sequence for re-entering in normal mode is shown in the following table and diagram:
Figure 17. Resuming to normal mode timing diagram
CLK
1°
2°
3°
4°
5°
OE/DM2
H
L
H
H
H
LE/DM1
L
L
L
L
L
Note:
For proper device operation the “entering in detection” sequence must be followed by a
“resume mode” sequence, it is not possible to insert consecutive equal sequences.
7.4
Note:
Error detection conditions
V_DD = 3.3 to 5 V temperature range -40 to 125 °C
Configuration
Table 13. Detection conditions
Detection mode
Detection results
SW-1 or SW-3b
SW-2 or SW-3a
Open line or output
short to GND detected
==> I_ODEC ≤ 0.5 x I_O
No error
detected
==> I_ODEC ≥ 0.5 x I_O
Short on LED or short
to V-LED detected
==> V_O ≥ 2.4 V
No error
detected
==> V_O ≤ 2.2 V
Where: I_O = the output current programmed by the R_EXT, I_ODEC = the detected output
current in detection mode.
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