A good PCB layout for the LM3559TLX/NOPB involves keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing the length of the traces between the IC and the capacitors. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
To ensure stability, make sure the output capacitor has a low ESR (Equivalent Series Resistance) and is placed close to the IC. Also, ensure the input capacitor is properly sized and placed close to the IC. Additionally, avoid using long traces and minimize the inductance in the output circuit.
The LM3559TLX/NOPB can handle input voltages up to 42V, but it's recommended to keep the input voltage below 40V to ensure reliable operation and to prevent damage to the IC.
The LM3559TLX/NOPB is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage at high temperatures to ensure reliable operation. Consult the datasheet for specific derating guidelines.
The output voltage of the LM3559TLX/NOPB can be calculated using the formula: Vout = (1 + R2/R1) * 1.25V, where R1 and R2 are the resistors in the feedback network.
LM3559TLX/NOPB datasheet
by Texas Instruments
