MAX6975 Maxim Integrated Products, MAX6975 Datasheet - Page 12

• Manufacturer Part Number: MAX6975
• Description: (MAX6974 / MAX6975) 24-Output PWM LED Drivers
• Manufacturer: Maxim Integrated Products

The MAX6974/MAX6975 can double the number of
LEDs driven from 24 to 48 through multiplexing. When
24-Output PWM LED Drivers
for Message Boards
Figure 5. MAX6975 Multiplexing Two Sets of Eight RGB Pixels with a Single LED Supply and Subframe Timing
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Multiplexed vs. Nonmultiplexed Operation
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multiplexing, the two outputs, MUX0 and MUX1, drive
two external pnp transistors, such as FMMTL717, used
as common-anode power switches (see
Figure
5).