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UC2843A控制IC是UC2843的引脚兼容改进版本。提供控制电流模式开关模式电源的必要功能，该器件具有以下改进的功能。启动电流指定为小于0.5 mA。振荡器放电调整为8.3 mA。在欠压锁定期间，对于V CC 超过5 V，输出级可在低于1.2 V时吸收至少10 mA。
| 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 |
| UC2843A-Q1 | UC2842AQ | UC2843AQ | UC2845AQ |
|---|---|---|---|
| Boost Buck-Boost Flyback Forward | Boost | Boost Flyback Forward | Boost Flyback Forward |
| Current | Current | Current | Current |
| 8.5 | 16 | 8.5 | 8.5 |
| 30 | 30 | 30 | 30 |
| 500 | 500 | 500 | 500 |
| 8.5/7.9 | 16/10 | 8.5/7.9 | 8.5/7.9 |
| 100 | 100 | 100 | 50 |
| 1 | 1 | 1 | 1 |
| Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology | Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology | Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology | Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology |
| Automotive | Automotive | Automotive | Automotive |
| -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| 8SOIC | 14SOIC 8SOIC | 14SOIC 8SOIC | 14SOIC 8SOIC |
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