DM141 SitI, DM141 Datasheet - Page 10

• Manufacturer Part Number: DM141
• Description: 8 x 2 Channel Constant Current LDE Driver
• Manufacturer: SitI

8x2-Bit Constant Current LED Drivers
CLK. And the data ‘1’ represents the corresponding current output ‘ON’, while the data ‘0’
stands for ‘OFF’. The data will be transferred into the latch as the LTH pin goes high. And the
data will be latched when LTH goes low.The SERIAL_OUT data is shifted out on
synchronization to the falling edge of CLOCK. The graph below depicts the timing of data
serial-in and serial-out.
connected to GND. And, good PCB layout pattern conducted to thermal pad will have better
performance in thermal effect. Due to the small size and low profile, the majority of heat
generated by the die within this package is dissipated through the thermal pad to PCB. The PCB
configuration and metal layers embedded in the PCB become important to achieving good
thermal performance. By increasing the embedded copper area, the thermal performance will be
improved. Thermal vias which conduct heat from the surface of the PCB to the ground plane are
necessary. More vias may improve the package thermal performance.
Serial_In Data, Serial_Out and Latch
The IC’s thermal pad (QFN) which is internally connected to the bottom side of chip should be
Package and Thermal Pad
The SIN data will be clocked into the 16 bits shift register synchronized on the rising edge of
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點晶科技股份有限公司
點晶科技股份有限公司
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
SOUT
CLK
LTH
SIN
EN
G1
R1
G2
R2
R7
G8
R8
Previous Data
16 Clocks
-9-
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
5V
0V
5V
0V
5V
0V
5V
0V
5V
0V
Version ： ： ： ： A.012
DM141