The UCC280x 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.

• 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, Flyback, Forward
• Duty cycle (Max) (%)
• 100
• Supply voltage (Max) (V)
• 12
• UVLO thresholds on/off (V)
• 4.1/3.6
• Features
• Error Amplifier, Leading Edge Blanking, Soft Start
• Operating temperature range (C)
• -55 to 125
• Rating
• Military
• Frequency (Max) (kHz)
• 1000
• Gate drive (Typ) (A)
• 1

UCC1803的完整型号有：5962-9451303MPA、UCC1803J、UCC1803J883B，以下是这些产品的关键参数及官网采购报价：

5962-9451303MPA，工作温度：-55 to 125，封装：CDIP (JG)-8，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网5962-9451303MPA的批量USD价格：23.701（1000+）

UCC1803J，工作温度：-55 to 125，封装：CDIP (JG)-8，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网UCC1803J的批量USD价格：13.621（1000+）

UCC1803J883B，工作温度：-55 to 125，封装：CDIP (JG)-8，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网UCC1803J883B的批量USD价格：23.701（1000+）