The UCC3807 family of high speed, low power integrated circuits contains all of the control and drive circuitry required for off-line and dc-to-dc fixed frequency current mode switching power supplies with minimal external parts count.

These devices are similar to the UCC3800 family, but with the added feature of a user programmable maximum duty cycle. Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The UCC3807 family also features internal full cycle soft start and internal leading edge blanking of the current sense input.

The UCC3807 family offers a variety of package options, temperature range options, and choice of critical voltage levels. The family has UVLO thresholds and hysteresis levels for off-line and battery powered systems. Thresholds are shown in the table below.

• User Programmable Maximum PWM Duty Cycle
• 100-A Startup Current
• Operation to 1 MHz
• Internal Full Cycle Soft Start
• Internal Leading Edge Blanking of Current Sense Signal
• 1-A Totem Pole Output

• Topology
• Boost, Flyback, Forward
• Duty cycle (Max) (%)
• 78
• Supply voltage (Max) (V)
• 13.5
• UVLO thresholds on/off (V)
• 4.3/4.1
• Features
• Adjustable Switching Frequency, Error Amplifier, Leading Edge Blanking, Multi-topology, Programmable Max Duty Cycle, Soft Start
• Operating temperature range (C)
• -40 to 85
• Rating
• Catalog, Military
• Frequency (Max) (kHz)
• 1000
• Gate drive (Typ) (A)
• 1

UCC2807-3的完整型号有：UCC2807D-3、UCC2807DTR-3，以下是这些产品的关键参数及官网采购报价：

UCC2807D-3，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC2807D-3的批量USD价格：2.049（1000+）

UCC2807DTR-3，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC2807DTR-3的批量USD价格：1.734（1000+）