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UCCx808-x是一系列BiCMOS推挽式高速,低功耗脉冲宽度调制器。 UCCx808包含离线或DC-DC固定频率电流模式开关电源所需的所有控制和驱动电路,外部元件数量最少。
安排UCCx808-x双输出驱动级在推拉式配置中。两个输出均使用拨动触发器以振荡器频率的一半切换。两个输出之间的死区时间通常为60 ns至200 ns,具体取决于定时电容和电阻的值,从而将每个输出级占空比限制在50%以内。
| 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 |
| UCC2808-2 | UCC2808-1 | UCC2808A-1 | UCC2808A-2 |
|---|---|---|---|
| Push-Pull | Push-Pull | Push-Pull | Push-Pull |
| Current | Current | Current | Current |
| 4.1 | 8.3 | 8.3 | 4.1 |
| 15 | 15 | 15 | 15 |
| 1000 | 1000 | 1000 | 1000 |
| 4.3/4.1 | 12.5/8.3 | 12.5/8.3 | 4.3/4.1 |
| 49 | 49 | 49 | 49 |
| 1 | 1 | 1 | 1 |
| Error Amplifier Multi-topology Soft Start | Error Amplifier Multi-topology Soft Start | Error Amplifier Multi-topology Soft Start | Error Amplifier Multi-topology Soft Start |
| Catalog | Catalog | Catalog | Catalog |
| -40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
| 8PDIP 8SOIC | 8PDIP 8SOIC | 8PDIP 8SOIC 8TSSOP | 8PDIP 8SOIC 8TSSOP |