A good PCB layout for the LMZ12003TZE-ADJ/NOPB involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the input and output traces. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
To ensure stability, ensure that the output capacitor has a low ESR, the input capacitor is properly sized, and the feedback resistors are chosen to provide a stable gain. Additionally, ensure that the device is operated within its recommended operating conditions and that the input voltage is within the specified range.
The maximum output current of the LMZ12003TZE-ADJ/NOPB is 3A. However, the device can deliver higher currents for short durations. It's essential to ensure that the device is properly heatsinked and that the output current is within the recommended operating conditions.
The output voltage of the LMZ12003TZE-ADJ/NOPB can be adjusted by using a resistive divider network between the output and the ADJ pin. The output voltage can be calculated using the formula: Vout = 1.25V x (1 + R1/R2), where R1 and R2 are the resistors in the divider network.
The thermal derating of the LMZ12003TZE-ADJ/NOPB is 30.8 mW/°C. This means that the device's power dissipation must be reduced by 30.8 mW for every degree Celsius above the maximum operating temperature of 125°C.
LMZ12003TZE-ADJ/NOPB datasheet
by Texas Instruments
