LED

ISSI IS31FL3731 Crossplexing LED driver

The IS31FL3731 from ISSI is an LED driver that uses cross-plexing in order to control up to 144 LED with a PWM of 8 bits, it also has on-chip memory to store 8 complete frames for animations and an input pin for audio interaction.

I design this board to test this chip and also added an MMA5284 Accelerometer from NXP, this board has components on both sides so I decided to solder the components with solder paste a the T962 reflow oven.

A very important step when you solder with a reflow oven it is to correctly apply the solder paste to the PCB, for better results it highly recommended to use a steel stencil and apply the solder paste in a single movement for proper solder quantity to the board.

After applying the solder paste just pick and place the components and reflow them in the oven and proceed with the other side of PCB the same way as previously.