A good PCB layout for optimal thermal performance involves placing the device near a thermal pad or a heat sink, and ensuring good thermal conductivity between the device and the PCB. A 4-layer PCB with a solid ground plane and a thermal relief pattern can help to dissipate heat efficiently.
To ensure stability and prevent oscillations, it's essential to follow the recommended component values and PCB layout guidelines. Additionally, a low-ESR output capacitor and a high-quality input capacitor can help to reduce noise and oscillations.
The maximum input voltage that can be applied to the LMR10515YMFE/NOPB is 15V. Exceeding this voltage can cause damage to the device.
The output voltage ripple and noise can be calculated using the equations provided in the datasheet. The output voltage ripple is dependent on the input voltage, output voltage, and the switching frequency, while the output noise is dependent on the switching frequency and the output capacitor value.
The recommended input capacitor value is 10uF to 22uF, and the recommended type is a low-ESR ceramic capacitor, such as an X5R or X7R dielectric capacitor.
LMR10515YMFE/NOPB datasheet
by Texas Instruments
