Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices 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 TPS79628DCQR 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 1.8V output, the tolerance would be ±36mV (1.8V x 0.02).
The absolute maximum input voltage rating for the TPS79628DCQR is 6.5V. Applying a voltage higher than this can damage the device. However, the recommended maximum operating input voltage is 5.5V to ensure reliable operation and minimize the risk of damage.
The TPS79628DCQR is rated for operation up to 125°C junction temperature. However, the device's performance and reliability may degrade at high temperatures. It's essential to follow the recommended operating conditions and derate the device's performance accordingly to ensure reliable operation in high-temperature environments.
To ensure stability, follow the recommended output capacitor selection and placement guidelines in the datasheet. A minimum output capacitance of 2.2μF is recommended, and the capacitor should be placed close to the output pin. Additionally, ensure that the input capacitor is properly sized and placed to minimize input voltage ripple.
TPS79628DCQR datasheet
by Texas Instruments
