TI UCC2813QDR-3Q1

The UCC2813-x-Q1 device family of high-speed, lowpower integrated circuits contains all of the control and drive components required for off-line and DC-toDC fixed-frequency current-mode switching power supplies with minimal parts count. These devices have the same pin configuration as the UC284x device family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input. The UCC2813-x-Q1 device family offers a variety of package options, choice of maximum duty cycle, and choice of critical voltage levels. Devices with lower reference voltage such as the UCC2813-3-Q1 and UCC2813-5-Q1 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC2813-2-Q1 device and UCC2813-4-Q1 device make these ideal choices for use in off-line power supplies. The UCC2813-x-Q1 device series is specified for operation from -40°C to 125°C.

• Qualified for automotive applications
• AEC-Q100 qualified with the following results:
  • Device temperature grade 1: -40°C to 125°C TA
  • Device HBM classification level 2: ±2 kV
  • Device CDM classification level C5: >1000 V
• 100-μA typical starting supply current
• 500-μA typical operating supply current
• Operation to 1 MHz
• Internal soft start
• Internal fault soft start
• Internal leading-edge blanking of the current sense signal
• 1-A totem-pole output
• 70-ns typical response from current-sense to gate drive output
• 1.5% tolerance voltage reference
• Same pinout as the UCC3802 device, UC3842 device, and UC3842A device families

• Automotive power supplies
• Auxiliary power supply for automotive hybrid and electric vehicles
• AC and DC power supplies