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STP1612PW05 bảng dữ liệu(PDF) 20 Page - STMicroelectronics

tên linh kiện STP1612PW05
Giải thích chi tiết về linh kiện  16-channel LED driver with 16-bit PWM, 8-bit gain and full LED error detection
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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STP1612PW05 bảng dữ liệu(HTML) 20 Page - STMicroelectronics

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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: IO = the output current programmed by the REXT, IODEC = the detected output
current in detection mode
Figure 11.
Detection circuit
Table 14.
Detection conditions (VDD = 3.3 to 5 V temp. range -40 to 125 °C)
SW-1 or
SW-3b
Open line or output short to GND
detected
==> IODEC ≤ 0.5 x IO
SW-2 or
SW-3a
Short on LED or short to V-LED
detected
==> VO ≥ 2.3 V
16
STP1612PW05



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