UC3845D8 datasheet by Texas Instruments

UC3845D8 Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of UC3845D8?
  The maximum operating frequency of UC3845D8 is 500 kHz. However, the recommended operating frequency is up to 400 kHz for optimal performance.
• How do I calculate the minimum and maximum input voltage for UC3845D8?
  The minimum input voltage is typically 8.5V, and the maximum input voltage is 18V. However, the recommended input voltage range is 12V to 15V for optimal performance.
• What is the purpose of the soft-start pin (SS) in UC3845D8?
  The soft-start pin (SS) is used to control the output voltage ramp-up time during power-up. It helps to prevent output voltage overshoot and reduces the inrush current.
• How do I set the output voltage of UC3845D8?
  The output voltage of UC3845D8 is set by the voltage divider network connected to the feedback pin (FB). The output voltage is determined by the ratio of the resistors in the voltage divider network.
• What is the maximum output current of UC3845D8?
  The maximum output current of UC3845D8 is 1A. However, the recommended output current is up to 500mA for optimal performance and to prevent overheating.