For optimal thermal performance, it is recommended to have a solid copper plane under the package, and to use thermal vias to connect the plane to the internal layers. Additionally, keeping the PCB layers as thin as possible and using a thermal interface material (TIM) between the package and the PCB can help to improve heat dissipation.
To ensure the stability of the output voltage, it is recommended to use a minimum output capacitance of 10uF, and to keep the Equivalent Series Resistance (ESR) of the capacitor as low as possible. Additionally, the input capacitor should be placed as close as possible to the input pin, and the output capacitor should be placed as close as possible to the output pin.
Although the datasheet specifies a maximum input voltage of 35V, it is recommended to limit the input voltage to 30V or less to ensure reliable operation and to prevent damage to the device.
The AP78L05VL-A is rated for operation up to 125°C, but it is recommended to derate the output current and to ensure good heat dissipation to prevent overheating. Additionally, the device should be soldered to a PCB with a high-temperature rating to prevent damage to the PCB.
The AP78L05VL-A has built-in overcurrent protection, but it is recommended to add external protection such as a fuse or a current-limiting resistor to prevent damage to the device and the PCB in case of a fault condition.
AP78L05VL-A datasheet
by Diodes Incorporated
