UC2827DW-1 datasheet by Texas Instruments

UC2827DW-1 Frequently Asked Questions (FAQs)

• What is the recommended layout and placement for the UC2827DW-1?
  The UC2827DW-1 requires careful layout and placement to minimize noise and ensure proper operation. TI recommends placing the IC close to the power source, using a solid ground plane, and keeping the input and output traces short and separate.
• How do I choose the right output inductor for the UC2827DW-1?
  The output inductor selection depends on the desired output voltage, current, and switching frequency. TI recommends using an inductor with a high saturation current, low DC resistance, and a suitable inductance value (e.g., 10-22 μH) to ensure stable operation.
• What is the maximum input voltage for the UC2827DW-1?
  Although the datasheet specifies a maximum input voltage of 18V, TI recommends limiting the input voltage to 15V to ensure reliable operation and prevent damage to the IC.
• How do I adjust the output voltage of the UC2827DW-1?
  The output voltage can be adjusted by changing the resistor divider ratio (R1 and R2) connected to the FB pin. The output voltage is calculated using the formula: Vout = 1.25V x (R1 + R2) / R2.
• What is the purpose of the EN pin on the UC2827DW-1?
  The EN (enable) pin is used to enable or disable the converter. When the EN pin is pulled low, the converter is disabled, and the output voltage is reduced to near zero. This feature can be used to implement power-saving modes or shutdown the converter.