A good PCB layout for the FMMT417TD involves keeping the input and output traces separate, using a ground plane, and minimizing the length of the input and output traces. A 4-layer PCB with a dedicated ground plane is recommended.
To ensure proper biasing, connect the enable pin (EN) to a logic high (VCC) to enable the device. The input voltage (VIN) should be within the recommended range of 2.5V to 5.5V. The output voltage (VOUT) should be decoupled with a 1uF capacitor to ensure stability.
The FMMT417TD can deliver up to 1A of output current. However, the maximum output current is dependent on the input voltage, output voltage, and ambient temperature. Refer to the datasheet for more information on output current capability.
To protect the FMMT417TD from overvoltage and undervoltage conditions, use a voltage supervisor or a voltage monitor IC to monitor the input voltage. You can also add a voltage clamp or a TVS diode to protect the device from voltage transients.
The FMMT417TD has a thermal derating of 6.67mW/°C. This means that the device's power dissipation capability decreases as the ambient temperature increases. Refer to the datasheet for more information on thermal derating.
FMMT417TD datasheet
by Diodes Incorporated
