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 capacitors close to the IC, using a solid ground plane, and minimizing trace lengths and widths to reduce EMI and noise.
The choice of input and output capacitors depends on the specific application requirements. Generally, low-ESR ceramic capacitors (e.g., X5R or X7R) with a voltage rating above the maximum input voltage are recommended. The output capacitor should be selected based on the desired output ripple and transient response.
While the datasheet specifies an operating temperature range of -40°C to 125°C, it's essential to consider the ambient temperature and the device's power dissipation to ensure reliable operation. A maximum ambient temperature of 85°C is recommended for most applications.
To ensure stability, follow the recommended component values and PCB layout. Additionally, ensure that the input and output capacitors are properly selected, and the feedback network is correctly configured. If oscillations occur, check for layout issues, component tolerances, and ensure that the device is operated within its specified voltage and current ranges.
While the datasheet specifies an input voltage range of 2.7V to 6.5V, the recommended input voltage range for optimal performance is 3.3V to 5.5V. Operating outside this range may affect the device's efficiency, stability, and reliability.
TPS826765SIPR datasheet
by Texas Instruments
