TLC6C598 Datasheet, PDF (16/23 Pages) Texas Instruments – TLC6C598 8-Bit Shift-Register LED Driver

TLC6C598
SLIS177 – MAY 2016
www.ti.com
10 Power Supply Recommendations
The TLC6C598 device is designed to operate with 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 requirements for the digital signal pins. The only requirement is placing the ceramic
bypass capacitors near the corresponding pins.
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 copper 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
V_CC
1
SER IN
2
DRAIN0
3
DRAIN1
4
DRAIN2
5
DRAIN3
6
CLR
7
G
8
16
GND
15
SRCK
14
DRAIN7
13
DRAIN6
12
DRAIN5
11
DRAIN4
10
RCK
9
SER OUT
Figure 16. TLC6C598 Example Layout
16
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