A good PCB layout for the TPS3805H33MDCKREP 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 can be adjusted based on the specific application requirements.
The maximum ambient temperature range for the TPS3805H33MDCKREP is -40°C to 125°C. However, the device can operate at a junction temperature of up to 150°C.
The TPS3805H33MDCKREP has a power-good output (PG) that can be used to monitor the output voltage. The device can be powered up by applying a voltage to the VIN pin, and powered down by removing the voltage from the VIN pin. It's recommended to use a soft-start circuit to slowly ramp up the output voltage during power-up.
The recommended input voltage range for the TPS3805H33MDCKREP is 2.7V to 5.5V. However, the device can operate with an input voltage as low as 2.5V, but with reduced performance.
TPS3805H33MDCKREP datasheet
by Texas Instruments
