Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good PCB design practices, such as keeping the input and output traces separate, using a solid ground plane, and minimizing loop areas to reduce EMI.
The TPSM861252RDXR is a adjustable output voltage regulator. To select the correct output voltage, use the resistor divider network (R1 and R2) connected to the FB pin, as described in the datasheet. The output voltage can be calculated using the formula: Vout = 0.8V * (1 + R2/R1).
The maximum input voltage for the TPSM861252RDXR is 18V. Exceeding this voltage may damage the device. It's essential to ensure that the input voltage is within the recommended range to maintain the regulator's reliability and performance.
To ensure stability and prevent oscillations, follow the recommended component values and PCB layout guidelines in the datasheet. Additionally, use a high-quality output capacitor with a low ESR (Equivalent Series Resistance) and a sufficient capacitance value (at least 10uF) to filter the output voltage.
The thermal derating curve for the TPSM861252RDXR is not explicitly provided in the datasheet. However, Texas Instruments recommends following the thermal design guidelines in the datasheet and using thermal simulation tools to estimate the junction temperature. A general rule of thumb is to derate the output current by 50% for every 10°C increase above the maximum operating temperature (125°C).
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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.
