Error detection conditions
STP1612PW05
20/35
Doc ID 15819 Rev 4
10
Error detection conditions
The STP1612PW05 can detect open channels (OD) and LED short-circuits (SD).
The detection circuitry performs open- and short-circuit detection simultaneously and the
image quality will not be impacted since the test duration is short (0.5 µs typ).
To perform the open-circuit, short-circuit error detection a channel must be on, the
command “enable error detection” starts the detection. After 0.5 µs (typ) the command “read
error status code” allows to get the status from the serial output (SDO).
Note:
Where: I
O
= the output current programmed by the R
EXT
, I
ODEC
= the detected output
current in detection mode
Figure 11.
Detection circuit
Table 14.
Detection conditions (V
DD
= 3.3 to 5 V temp. range -40 to 125 °C)
SW-1 or
SW-3b
Open line or output short to GND
detected
==> I
ODEC
≤
0.5 x I
O
SW-2 or
SW-3a
Short on LED or short to V-LED
detected
==> V
O
≥
2.3 V
16
STP1612PW05
Содержание STP1612PW05
Страница 3: ...STP1612PW05 Contents Doc ID 15819 Rev 4 3 35 16 Package mechanical data 25 17 Revision history 34...
Страница 28: ...Package mechanical data STP1612PW05 28 35 Doc ID 15819 Rev 4 Figure 17 SO 24 package dimensions...
Страница 32: ...Package mechanical data STP1612PW05 32 35 Doc ID 15819 Rev 4 Figure 20 QFN24 4x4 mechanical drawing...
