Texas Instruments recommends a 2-layer or 4-layer PCB with a solid ground plane and a thermal relief pattern under the IC to improve thermal performance. A minimum of 2 oz copper thickness is recommended for the top and bottom layers.
To ensure reliable start-up, Texas Instruments recommends using a soft-start circuit to limit the inrush current during power-up. Additionally, a minimum input capacitance of 10uF is recommended to ensure stable operation.
The LM3743MM-300/NOPB is rated for operation from -40°C to 125°C ambient temperature range. However, the device's performance and reliability may degrade at extreme temperatures, so it's essential to consider thermal management and derating factors in your design.
Yes, the LM3743MM-300/NOPB is qualified for automotive and high-reliability applications. It meets the requirements of the AEC-Q100 standard for automotive grade devices and is suitable for use in harsh environments.
To troubleshoot common issues, Texas Instruments recommends checking the PCB layout for noise and signal integrity issues, ensuring proper input and output filtering, and verifying that the device is operated within its recommended operating conditions. Additionally, using a scope or simulation tools can help identify and debug issues.
LM3743MM-300/NOPB datasheet
by Texas Instruments
