Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general best practices for high-frequency PCB design, such as using a solid ground plane, minimizing trace lengths, and using bypass capacitors to reduce noise and oscillations.
The output capacitor should be chosen based on the desired output voltage ripple, output current, and operating frequency. A general rule of thumb is to use a capacitor with a value between 10uF to 22uF, and a voltage rating of at least 2x the output voltage. Additionally, the capacitor's ESR (Equivalent Series Resistance) should be low to minimize output voltage ripple.
The LM7301IM has an absolute maximum input voltage rating of 18V, but it's recommended to operate the device within the recommended input voltage range of 4.5V to 15V to ensure reliable operation and to prevent damage to the device.
The LM7301IM has a built-in overcurrent protection feature that can be enabled by connecting a resistor between the OCSET pin and the output voltage. The value of the resistor determines the overcurrent threshold. Additionally, an external current sense resistor can be used to monitor the output current and implement overcurrent protection using an external circuit.
The thermal derating curve for the LM7301IM is not explicitly provided in the datasheet, but it can be estimated based on the device's power dissipation and thermal resistance. As a general rule, the device's output current should be derated by 1-2% per degree Celsius above the maximum operating temperature to prevent overheating and ensure reliable operation.
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.