TLC6C5912 Datasheet, PDF (15/23 Pages) Texas Instruments – TLC6C5912 12-Channel Shift-Register LED Driver

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TLC6C5912
SLIS180 – MAY 2016
10 Power Supply Recommendations
The TLC6C5912 device is designed to operate from an input voltage supply range from 3 V to 5.5 V. This input
supply should be well regulated. TI recommends placing the ceramic bypass capacitors near the V_CC pin.
11 Layout
11.1 Layout Guidelines
There are no special layout requirement for the digital signal pins. The only requirement is placing the ceramic
bypass capacitors near the corresponding pin.
Maximize the copper coverage on the PCB to increase the thermal conductivity of the board. The major heat-flow
path from the package to the ambient is through the cooper on the PCB. Maximizing the copper coverage is
extremely important when the design does not include heat sinks attached to the PCB on the other side of the
package.
• Add as many thermal vias as possible directly under the package ground pad to optimize the thermal
conductivity of the board.
• All thermal vias should be either plated shut or plugged and capped on both sides of the board to prevent
solder voids. To ensure reliability and performance, the solder coverage should be at least 85%.
11.2 Layout Example
Vcc
1
SER IN
2
DRAIN0
3
DRAIN1
4
DRAIN2
5
DRAIN3
6
DRAIN4
7
DRAIN5
8
CLR
9
G
10
20
GND
19
SRCK
18
DRAIN11
17
DRAIN10
16
DRAIN9
15
DRAIN8
14
DRAIN7
13
DRAIN6
12
RCK
11
SER OUT
Figure 15. Layout Recommendation
Copyright © 2016, Texas Instruments Incorporated
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