The maximum current rating of each channel is 1.5A, but it's recommended to derate the current to 1A or less for reliable operation.
Make sure to connect the VCC pin to a stable 5V power supply, and decouple it with a 0.1uF capacitor to ground. Also, ensure the input voltage is within the recommended operating range of 4.5V to 5.5V.
The EN pin is an active-low input that enables or disables the entire device. When EN is low, all outputs are turned off, and the device enters a low-power state. When EN is high, the device is enabled, and the outputs are active.
The TPIC0108BDWP has a thermal pad on the bottom of the package, which should be connected to a copper plane on the PCB for heat dissipation. Ensure good airflow around the device, and consider using a heat sink if the device is expected to operate at high temperatures or high currents.
Keep the PCB traces short and wide to minimize inductance and resistance. Use a solid ground plane under the device, and ensure the input and output traces are separated to minimize noise coupling. Also, avoid running high-current traces under the device's thermal pad.