The UCC280x-Q1 family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching mode power supplies with minimal parts count.

These devices have the same pin configuration as the UCx84x family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC280x-Q1 family offers a variety of package options, temperature range options, choice of maximum duty cycle, and choice of critical voltage levels. Lower reference parts such as the UCC2803-Q1 and UCC2805-Q1 fit best into battery-operated systems, while the higher reference and higher UVLO hysteresis of the UCC2802-Q1 and UCC2804-Q1 make these ideal choices for use in off-line power supplies.

The UCC280x-Q1 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-A typical starting supply current
• 500-A typical operating supply current
• Operation up 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 UC3842 and UC3842A

• Topology
• Boost, Buck, Buck-Boost, Flyback, Forward
• Duty cycle (Max) (%)
• 50
• Supply voltage (Max) (V)
• 12
• UVLO thresholds on/off (V)
• 4.1/3.6
• Features
• Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Leading Edge Blanking, Multi-topology, Soft Start
• Operating temperature range (C)
• -40 to 125
• Rating
• Automotive
• Frequency (Max) (kHz)
• 1000
• Gate drive (Typ) (A)
• 1

UCC2805-Q1的完整型号有：UCC2805QDRQ1，以下是这些产品的关键参数及官网采购报价：

UCC2805QDRQ1，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网UCC2805QDRQ1的批量USD价格：1.28（1000+）