A good PCB layout for the LME49810 involves keeping the input and output traces short and symmetrical, using a solid ground plane, and placing the decoupling capacitors close to the device. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
The input capacitor should have a low equivalent series resistance (ESR) and a high ripple current rating. A ceramic capacitor with a value of 1-10uF is recommended. The output capacitor should have a low ESR and a high capacitance value (e.g., 22-47uF).
The maximum power dissipation of the LME49810 is dependent on the ambient temperature and the thermal resistance of the package. The maximum power dissipation is typically around 2.5W, but this can be increased with proper heat sinking and thermal management.
The LME49810 has built-in overvoltage protection (OVP) and undervoltage lockout (UVLO) features. However, additional protection can be added using external components such as voltage regulators, TVS diodes, and Zener diodes to protect against voltage transients and surges.
The recommended operating temperature range for the LME49810 is -40°C to 125°C. However, the device can operate up to 150°C with reduced performance and reliability.
LME49810TB/NOPB datasheet
by Texas Instruments
