A good PCB layout for the AP2191MPG-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 maximum safe operating junction temperature for the AP2191MPG-13 is 150°C. Exceeding this temperature may reduce the device's lifespan or cause permanent damage.
While the AP2191MPG-13 is a high-quality device, it is not specifically designed for high-reliability or automotive applications. For such applications, consider using devices with specific automotive or high-reliability certifications, such as AEC-Q100 or MIL-STD-883.
The AP2191MPG-13 has built-in overcurrent protection, but it's still important to add external protection measures, such as fuses or PTC thermistors, to prevent damage from excessive current or short-circuit conditions.
AP2191MPG-13 datasheet
by Diodes Incorporated
