UCD90120ARGCR datasheet by Texas Instruments

UCD90120ARGCR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  A 4-layer PCB with a solid ground plane and thermal vias is recommended. The device should be placed near a thermal pad or heat sink to dissipate heat efficiently.
• How do I ensure reliable communication between the UCD90120 and the system controller?
  Use a reliable communication protocol such as I2C or SPI, and ensure that the clock frequency and data transmission rates are within the specified limits. Also, use a pull-up resistor on the SDA line and a pull-down resistor on the SCL line.
• What is the maximum current that can be drawn from the output rails?
  The maximum current that can be drawn from the output rails depends on the specific configuration and application. However, as a general guideline, the output current should not exceed 1.5A per rail to ensure reliable operation.
• How do I implement overcurrent protection for the output rails?
  Implement overcurrent protection using external current sense resistors and a comparator or a dedicated overcurrent protection IC. The UCD90120 also has a built-in overcurrent protection feature that can be enabled through the I2C interface.
• What is the recommended input voltage range for the UCD90120?
  The recommended input voltage range for the UCD90120 is 4.5V to 14V. However, the device can operate with input voltages as low as 3.5V, but with reduced performance and efficiency.