STP1612PW05QTR STMicroelectronics, STP1612PW05QTR Datasheet - Page 20

• Manufacturer Part Number: STP1612PW05QTR
• Description: 16-channel Led Driver With 16-bit Pwm, 8-bit Gain And Full Led Error Detection
• Manufacturer: STMicroelectronics

Error detection conditions
10
Note:
20/32
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).
Table 14.
Where: I
current in detection mode
Figure 11. Detection circuit
SW-1 or
SW-2 or
SW-3b
SW-3a
O
= the output current programmed by the R
Detection conditions (V
Open line or output short to GND
detected
Short on LED or short to V-LED
detected
Doc ID 15819 Rev 2
DD
= 3.3 to 5 V temp. range -40 to 125 °C)
STP1612PW05
16
EXT
, I
==> I
==> V
ODEC
ODEC
O
≥ 2.3 V
= the detected output
≤ 0.5 x I
O
STP1612PW05