Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for switching regulator layout, such as keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing trace lengths and widths.
To ensure stability, make sure to follow the recommended component values and layout, and also consider the output capacitor's ESR (Equivalent Series Resistance) and ESL (Equivalent Series Inductance) when selecting the output capacitor. Additionally, adding a small ceramic capacitor (e.g. 10nF) between the Vout pin and GND can help to improve stability.
The LM3262 has an absolute maximum input voltage rating of 42V, but it's recommended to operate the device within the recommended input voltage range of 7V to 40V to ensure reliable operation and to prevent damage to the internal components.
The LM3262 has an operating junction temperature range of -40°C to 125°C, but it's recommended to derate the output current and input voltage as the temperature increases to prevent overheating and ensure reliable operation. Additionally, consider using a heat sink or thermal pad to improve heat dissipation.
The output voltage ripple of the LM3262 can be calculated using the formula: ΔVout = (Iout * ESL) / (Cout * fsw), where Iout is the output current, ESL is the equivalent series inductance of the output capacitor, Cout is the output capacitance, and fsw is the switching frequency. Additionally, consider using a low-ESR output capacitor and a high-frequency switching regulator to minimize output voltage ripple.
LM3262TMX/NOPB datasheet
by Texas Instruments
