A good PCB layout for the TPS40210DGQ should include a solid ground plane, separate analog and digital grounds, and a decoupling capacitor (e.g., 10uF) between VIN and GND. Additionally, keep the input and output capacitors close to the device and use short, wide traces for the power paths.
Choose input capacitors with a voltage rating of at least 2x the input voltage, and output capacitors with a voltage rating of at least 2x the output voltage. For most applications, a 10uF ceramic capacitor is suitable for both input and output. However, for high-current or high-temperature applications, consider using a larger capacitor or a capacitor with a higher temperature rating.
The TPS40210DGQ can handle input voltages up to 18V, but it's recommended to keep the input voltage below 15V to ensure reliable operation and minimize power dissipation.
The output voltage of the TPS40210DGQ can be adjusted by connecting a resistor divider network between the VOUT pin and the GND pin. The output voltage is determined by the ratio of the resistors and the internal reference voltage (1.2V). Use the formula: VOUT = 1.2V x (R1 + R2) / R2.
The TPS40210DGQ can deliver up to 2A of output current, but the maximum current is dependent on the input voltage, output voltage, and ambient temperature. Be sure to check the device's thermal and electrical specifications to ensure reliable operation.
TPS40210DGQ datasheet
by Texas Instruments
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