TPS62140

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Instructions for TPS62140

1. Input Capacitor Selection:

   • Place a ceramic capacitor close to the input pins of the TPS62140. A typical value is 1 μF, but it can vary depending on the application and input source.

2. Output Capacitor Selection:

   • Choose an output capacitor that ensures stability. A typical value is 1 μF. The ESR of the output capacitor should be low to minimize output ripple.

3. Setting the Output Voltage:

   • The output voltage can be set using external resistors R1 and R2. Use the formula ( V_ = V_ times (1 + frac) ), where ( V_ ) is typically 0.8V.

4. Bypass Capacitors:

   • Place bypass capacitors as close as possible to the power and ground pins to ensure stable operation.

5. Thermal Considerations:

   • Ensure adequate heat dissipation if operating at high currents or in high ambient temperatures.

6. Layout Guidelines:

   • Keep the layout compact with short traces, especially for high-frequency nodes like the switch node.
   • Ground planes should be used to minimize noise and improve thermal performance.

7. Enable Pin:

   • The enable pin can be used to control the startup and shutdown of the regulator. It has a threshold voltage that must be exceeded to activate the device.

8. Shutdown Current:

   • When the enable pin is low, the device enters a low-power shutdown mode, reducing the quiescent current significantly.

9. Protection Features:

   • The TPS62140 includes thermal shutdown and current limiting features to protect against overtemperature and overload conditions.

For detailed specifications and advanced applications, refer to the official datasheet provided by Texas Instruments.