A good PCB layout for the AP2161MPG-13 should prioritize thermal dissipation. Place the device near a thermal pad or a heat sink, and ensure good copper coverage around the device. Avoid routing high-current traces under the device, and keep the thermal pad connected to a solid ground plane.
To ensure stable output voltage regulation, ensure the input voltage is within the recommended range, and the output capacitor is of sufficient value (at least 10uF) and low ESR. Also, minimize the distance between the output capacitor and the device, and use a low-impedance output capacitor.
The AP2161MPG-13 is rated for operation up to 85°C ambient temperature. However, for reliable long-term operation, it's recommended to keep the ambient temperature below 70°C to minimize thermal stress and ensure optimal performance.
While the AP2161MPG-13 is a high-quality device, it's essential to evaluate its suitability for high-reliability or automotive applications. Diodes Incorporated provides a range of automotive-grade and high-reliability devices; consult with their application engineers to determine the best device for your specific requirements.
For optimal performance, use a 10uF to 22uF ceramic or electrolytic capacitor with low ESR (less than 1 ohm) for the input capacitor. For the output capacitor, use a 10uF to 47uF ceramic or electrolytic capacitor with low ESR (less than 1 ohm). Ensure the capacitors are rated for the maximum input voltage and operating temperature.
AP2161MPG-13 datasheet
by Diodes Incorporated
