A good PCB layout for the SBL830 should consider the following: keep the input and output traces short and separate, use a solid ground plane, and place the input and output capacitors close to the device. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
To ensure stability, make sure to follow the recommended operating conditions, use a suitable output capacitor with low ESR, and add a small ceramic capacitor (e.g., 10nF) in parallel with the output capacitor to filter out high-frequency noise.
Although the datasheet specifies a maximum input voltage of 5.5V, the SBL830 can handle up to 6V for a short duration (e.g., during power-up or voltage transients). However, continuous operation above 5.5V is not recommended.
The SBL830 is rated for operation up to 125°C, but its performance may degrade at high temperatures. Ensure that your design provides adequate heat dissipation, and consider derating the output current and voltage to prevent overheating.
The output voltage ripple of the SBL830 can be estimated using the following formula: ΔVout = (Iout * ESR) / (fsw * Cout), where Iout is the output current, ESR is the equivalent series resistance of the output capacitor, fsw is the switching frequency, and Cout is the output capacitance.
SBL830 datasheet
by Diodes Incorporated
