STMicroelectronics provides a recommended PCB layout in the application note AN2153, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize electromagnetic interference (EMI).
The LE45CD-TR has a thermal pad that must be connected to a thermal ground plane on the PCB to dissipate heat efficiently. A thermal interface material (TIM) can be used to improve heat transfer between the device and the heat sink or thermal ground plane.
Although the datasheet specifies a maximum input voltage of 5.5V, it's recommended to limit the input voltage to 5V to ensure reliable operation and prevent damage to the device.
Overvoltage protection can be implemented using a voltage supervisor or a dedicated overvoltage protection IC. The voltage supervisor can be connected to the input pins to detect overvoltage conditions and trigger a reset or shutdown signal to protect the LE45CD-TR.
The recommended input capacitance value is 10nF to 100nF, depending on the specific application and noise requirements. A larger capacitance value can help filter out noise and improve the device's immunity to electromagnetic interference (EMI).
LE45CD-TR datasheet
by STMicroelectronics
