A good PCB layout for the LMZ10503TZE-ADJ/NOPB should prioritize thermal dissipation. Place the device near a thermal pad or a heat sink, and ensure good copper pour coverage around the device. Avoid routing high-current traces near the device to minimize thermal resistance.
To ensure stability, ensure that the output capacitor has a low equivalent series resistance (ESR) and a high capacitance value. Also, add a small ceramic capacitor (e.g., 10nF) in parallel with the output capacitor to filter high-frequency noise. Additionally, ensure that the input capacitor is properly sized and placed close to the device.
A 10uF to 22uF ceramic capacitor with an X5R or X7R dielectric is recommended for the input capacitor. This type of capacitor provides a low ESR and is suitable for high-frequency switching applications.
The output voltage of the LMZ10503TZE-ADJ/NOPB can be adjusted by using a resistor divider network between the output and the ADJ pin. The output voltage is determined by the ratio of the resistors and the internal reference voltage (1.21V). Consult the datasheet for the specific resistor values and calculation formula.
The LMZ10503TZE-ADJ/NOPB is rated for operation from -40°C to 125°C ambient temperature. However, the device's performance and reliability may degrade at extreme temperatures. Ensure proper thermal management and derate the device's performance accordingly.
LMZ10503TZE-ADJ/NOPB datasheet
by Texas Instruments
