STMicroelectronics recommends a 4-layer PCB with a solid ground plane and a separate power plane for the LDK220PU27R. The device should be placed near the power supply and the output capacitors should be placed close to the device.
To ensure stability, the output voltage of LDK220PU27R should be decoupled with a capacitor (e.g., 10uF) and a resistor (e.g., 10kΩ) in series, connected between the output pin and the ground pin.
The maximum input voltage that can be applied to LDK220PU27R is 28V, but it's recommended to keep it below 25V for optimal performance and reliability.
To protect LDK220PU27R from overcurrent and overheating, a current limiting resistor can be added in series with the input voltage, and a thermal shutdown circuit can be implemented to turn off the device in case of overheating.
Yes, LDK220PU27R can operate in a high-temperature environment up to 125°C, but the device's performance and reliability may degrade at high temperatures. It's recommended to derate the output current and voltage according to the temperature derating curve provided in the datasheet.
LDK220PU27R datasheet
by STMicroelectronics
