DM11C SITI [Silicon Touch Technology Inc.], DM11C Datasheet - Page 13

• Manufacturer Part Number: DM11C
• Description: 8-bit Constant Current LED Driver with Error Detection
• Manufacturer: SITI [Silicon Touch Technology Inc.]

Thermal Shutdown
180℃, it will cause the driver to shutdown all the outputs. Basically, the IC will cool down and
return to the safe operating temperature which is approximately below 110℃. DM11C will restart
all the outputs at the same time. Operation in the thermal situation for a long time may cause chip
damage permanently.
LED Open/Short Detection
will be identified as a LED open failure when the output is turned on but the output voltage is below
0.3V. And then it will be identified as a LED short failure when the output is turned on but the
output voltage is above 1/2 VCC.
corresponding to particular output channel is ‘1’; (2) the output enable terminal is activated
(EN=‘L’); (3) the rising edge of the latch signal (LAT), DM11C will execute LED open/short
detection then renews the results within the corresponding shift register.
every LED driven by each channel. For either LED open or short detection, the original image data
is written to ‘1’ but ‘0’ is retrieved then a LED failure has occurred. If the image data is written to
‘0’ or the output enable terminal is inactive (EN=‘H’), it will not execute any detection process for
the corresponding channel. Therefore, system still retrieves the original image data.
8-bit Constant Current LED Driver with Error Detection
During operation, when the junction temperature of the IC will reach approximately above
The result of open/short detection of DM11C could be retrieved from serial-out (DAO) data. It
To set up with the following conditions: (1) the image data written in shift register
By using the error message retrieved from serial-out data, system can recognize the status of
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Version:A.002
DM11C
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