STMicroelectronics provides a recommended PCB layout in the application note AN5323, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize electromagnetic interference (EMI).
The input capacitor values depend on the input voltage, output voltage, and desired output ripple. A general guideline is to use a minimum of 10uF ceramic capacitors with a voltage rating of at least 1.5 times the input voltage. However, it's recommended to consult the application note AN5323 for more detailed guidance on capacitor selection.
While the datasheet specifies an operating temperature range of -40°C to 150°C, the maximum ambient temperature for reliable operation is typically considered to be around 125°C. Above this temperature, the device's performance and reliability may be compromised.
To ensure proper power-up and power-down sequencing, it's recommended to follow the guidelines in the application note AN5323. This includes using a soft-start circuit, controlling the input voltage rise time, and ensuring the output voltage is stable before enabling the device.
To minimize EMI, it's essential to use a combination of filtering and shielding techniques. This includes using ferrite beads, capacitors, and resistors to filter the input and output signals, as well as shielding the device and PCB with a metal enclosure or shielded cables.
PD57045S datasheet
by STMicroelectronics
