Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general guidelines for LDO regulator layout, such as keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing trace lengths and widths to reduce noise and EMI.
The output voltage tolerance of the TPS79228DBVR is specified as ±2% over the operating temperature range. To calculate the output voltage tolerance, multiply the nominal output voltage by the tolerance percentage. For example, for a 2.8V output, the tolerance would be ±0.056V (2.8V x 0.02).
The maximum input voltage that can be applied to the TPS79228DBVR is 13.2V, which is the absolute maximum rating. However, it's recommended to operate the device within the recommended input voltage range of 2.7V to 10V to ensure optimal performance and reliability.
The TPS79228DBVR has a soft-start feature that helps to reduce inrush current during power-up. The device starts up slowly, with a typical rise time of 1ms, to prevent excessive current surges. This helps to reduce the stress on the input power source and ensures a reliable power-up sequence.
The TPS79228DBVR is rated for operation up to 125°C, making it suitable for use in high-temperature environments. However, it's essential to ensure that the device is properly derated for temperature to prevent overheating and ensure reliable operation.
TPS79228DBVR datasheet
by Texas Instruments
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