Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general guidelines for low-dropout regulator (LDO) 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 ensure stability, it's recommended to use an output capacitor with a minimum equivalent series resistance (ESR) of 0.1 ohms and a minimum capacitance of 2.2 uF. Additionally, the output capacitor should be placed as close as possible to the device, and the device's output voltage should be decoupled from the input voltage using a capacitor with a value of 1 uF or greater.
The maximum input voltage that can be applied to the TPS75325QPWPREP is 13.5V, but it's recommended to operate the device within the specified input voltage range of 2.7V to 12V to ensure optimal performance and reliability.
The TPS75325QPWPREP has a soft-start feature that helps to reduce inrush current during power-up. During power-down, the device's output voltage will decay rapidly to prevent any backflow of current into the input. It's recommended to follow a controlled power-up and power-down sequence to ensure reliable operation.
The TPS75325QPWPREP has a thermal derating of 12.5 mW/°C above 25°C, which means that the device's power dissipation should be reduced as the ambient temperature increases to prevent overheating and ensure reliable operation.
TPS75325QPWPREP datasheet
by Texas Instruments
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