A good PCB layout for the TPS3780DDRYT involves placing the device close to the power source, using a solid ground plane, and keeping the input and output capacitors close to the device. Additionally, it's recommended to use a separate analog and digital ground plane to minimize noise coupling.
The input capacitor should be a low-ESR ceramic capacitor with a value of at least 10uF, while the output capacitor should be a low-ESR ceramic capacitor with a value of at least 22uF. The capacitor values may need to be adjusted based on the specific application and output current requirements.
The TPS3780DDRYT can provide up to 1A of output current, but the maximum output current may be limited by the input voltage, output voltage, and thermal considerations. It's recommended to check the device's thermal performance and adjust the output current accordingly.
The TPS3780DDRYT has a built-in overcurrent protection feature that limits the output current to a maximum of 2.5A. However, if additional overcurrent protection is required, an external current sense resistor can be used to monitor the output current and trigger a shutdown or warning signal if the current exceeds a certain threshold.
The recommended input voltage range for the TPS3780DDRYT is 2.7V to 5.5V, but the device can operate with input voltages as low as 2.3V. However, the output voltage and output current may be affected at lower input voltages.
TPS3780DDRYT datasheet
by Texas Instruments
