The maximum input voltage that can be applied to the TPS62851 is 5.5V, as specified in the datasheet. However, it's recommended to keep the input voltage below 5V to ensure reliable operation and to prevent damage to the device.
To minimize EMI, it's essential to follow good PCB layout practices, such as keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the traces. Additionally, TI provides a layout guide in the datasheet that should be followed.
The recommended output capacitor value is 10uF to 22uF, and the type should be a low-ESR ceramic capacitor, such as X5R or X7R. This ensures stable operation and good transient response.
The TPS62851 is rated for operation up to 125°C, but it's essential to consider the derating of the device's performance and the reliability of the surrounding components at high temperatures. Additionally, the device's power dissipation should be carefully managed to prevent overheating.
The TPS62851 has a fixed output voltage option, but it can be configured for a specific output voltage using an external resistor divider network. The datasheet provides a formula to calculate the required resistor values for a specific output voltage.
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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.
