Texas Instruments recommends a 4-layer PCB with a solid ground plane on the bottom layer, and a thermal relief pattern on the top layer to improve heat dissipation. Additionally, placing vias under the device can help to dissipate heat more efficiently.
To ensure reliable operation at high temperatures, it is recommended to follow the thermal design guidelines provided by Texas Instruments, including using a heat sink, thermal interface material, and ensuring good airflow around the device. Additionally, derating the output current and voltage can help to reduce the device's junction temperature.
The recommended input capacitor is a 10uF ceramic capacitor with a voltage rating of 25V or higher, and the recommended output capacitor is a 22uF ceramic capacitor with a voltage rating of 25V or higher. However, the specific capacitor values and types may vary depending on the application and operating conditions.
To troubleshoot issues with the device's output voltage regulation, check the input voltage, output voltage, and output current to ensure they are within the specified operating ranges. Also, verify that the feedback resistors are correctly connected and that the output capacitor is properly sized and connected. If the issue persists, consult the datasheet and application notes for further guidance.
Yes, the LMS202ECMX/NOPB is qualified for automotive and high-reliability applications. It meets the requirements of the AEC-Q100 standard for automotive applications, and is also suitable for use in industrial and medical applications that require high reliability.
LMS202ECMX/NOPB datasheet
by Texas Instruments
