The recommended PCB layout for optimal thermal performance involves placing the device on a 2-layer or 4-layer board with a solid ground plane, using thermal vias to connect the exposed pad to the ground plane, and keeping the thermal path as short as possible.
To ensure the stability of the output voltage, it is recommended to use a minimum output capacitance of 10uF, with an ESR of less than 1 ohm, and to place the output capacitor close to the output pin of the device.
The maximum input voltage that can be applied to the device is 15V, but it is recommended to operate the device within the specified input voltage range of 7V to 14V for optimal performance and reliability.
The LMS5258MF-1.2/NOPB is rated for operation up to 125°C, but it is recommended to derate the output current and input voltage at high temperatures to ensure reliable operation and to prevent thermal shutdown.
The LMS5258MF-1.2/NOPB has built-in overcurrent protection and short-circuit protection, but it is recommended to add external protection components such as fuses or current-limiting resistors to prevent damage to the device and the system.
LMS5258MF-1.2/NOPB datasheet
by Texas Instruments
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