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UCC3807系列高速,低功耗集成电路包含离线和DC-DC固定频率所需的所有控制和驱动电路电流模式开关电源,外部元件数量最少。
这些器件与UCC3800系列类似,但具有用户可编程最大占空比的附加功能。振荡器频率和最大占空比用两个电阻和一个电容编程。 UCC3807系列还具有内部全周期软启动和电流检测输入的内部前沿消隐。
UCC3807系列提供多种封装选项,温度范围选项和关键电压电平选择。该系列具有UVLO阈值和滞后水平,适用于离线和电池供电系统。阈值显示在下表中。
Topology |
Control Method |
Vin (Min) (V) |
Vin (Max) (V) |
Frequency (Max) (kHz) |
UVLO Thresholds On/Off (V) |
Duty Cycle (Max) (%) |
Gate Drive (Typ) (A) |
Features |
Rating |
Operating Temperature Range (C) |
Pin/Package |
UCC2807-3 | UCC2807-1 | UCC2807-2 |
---|---|---|
Boost Flyback Forward | Boost Flyback Forward | Boost Flyback Forward |
Current | Current | Current |
4.3 | 7.2 | 12.5 |
13.5 | 13.5 | 13.5 |
1000 | 1000 | 1000 |
4.3/4.1 | 7.2/6.9 | 12.5/8.3 |
78 | 78 | 78 |
1 | 1 | 1 |
Adjustable Switching Frequency Error Amplifier Leading Edge Blanking Multi-topology Programmable Max Duty Cycle Soft Start | Adjustable Switching Frequency Error Amplifier Leading Edge Blanking Multi-topology Programmable Max Duty Cycle Soft Start | Adjustable Switching Frequency Error Amplifier Leading Edge Blanking Multi-topology Programmable Max Duty Cycle Soft Start |
Catalog | Catalog | Catalog |
-40 to 85 | -40 to 85 | -40 to 85 |
8SOIC | 8PDIP 8SOIC | 8PDIP 8SOIC |