A good PCB layout for optimal thermal performance would be to have a solid ground plane on the bottom layer, and to use thermal vias to connect the exposed pad to the ground plane. This helps to dissipate heat efficiently.
To ensure the stability of the output voltage, it's essential to follow the recommended capacitor selection and placement guidelines, and to ensure that the input voltage is within the recommended range. Additionally, the output capacitor's ESR (Equivalent Series Resistance) should be within the recommended range.
Although the datasheet specifies a maximum input voltage of 5.5V, it's recommended to limit the input voltage to 5V to ensure reliable operation and to prevent damage to the device.
While ceramic capacitors can be used, they may not be the best choice due to their high ESR. A low-ESR capacitor such as an electrolytic or tantalum capacitor is recommended to ensure stability and optimal performance.
The power dissipation of the device can be calculated using the formula: Pd = (Vin - Vout) x Iout. Where Vin is the input voltage, Vout is the output voltage, and Iout is the output current.
TL720M05QKTTRQ1 datasheet
by Texas Instruments
