A recommended PCB layout for optimal thermal performance would be to have a solid ground plane on the bottom layer, and to use thermal vias to connect the exposed pad to the ground plane. This helps to dissipate heat efficiently.
To ensure stable output voltage regulation, it's essential to follow the recommended input and output capacitor values, and to ensure that the input voltage is within the specified range. Additionally, a minimum load of 1mA is recommended to maintain stability.
The AP2280-1WG-7 is rated for operation up to 85°C ambient temperature. However, for reliable operation, it's recommended to derate the device by 1°C for every 1,000 feet of altitude above sea level.
While the AP2280-1WG-7 is a high-quality regulator, it's essential to evaluate its suitability for high-reliability or automotive applications. Diodes Incorporated provides additional documentation and support for these applications, including AEC-Q100 qualification and PPAP documentation.
To protect the regulator from input voltage surges or spikes, it's recommended to add a TVS (Transient Voltage Suppressor) diode or a voltage clamp at the input. This helps to absorb or clamp voltage transients, ensuring the regulator's reliability.
AP2280-1WG-7 datasheet
by Diodes Incorporated
