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UCx84xA系列控制器件是引腳兼容的UCx84x系列改進版本。該系列器件具有控制電流模式或開關(guān)模式電源的必要功能，具有許多改進的特性：啟動電流小于0.5 mA，振蕩器放電調(diào)整為8.3 mA，在UVLO期間，輸出級可以下降對于V CC 超過5 V，小于1.2 V時至少10 mA。
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| ? |
|---|
| 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 | UC2843 |
|---|---|
| Boost Buck Buck-Boost Flyback Forward ? ? | Boost Buck Buck-Boost Flyback Forward ? ? |
| Peak Current Mode ? ? | Peak Current Mode ? ? |
| 8.4 ? ? | 8.4 ? ? |
| 30 ? ? | 30 ? ? |
| 500 ? ? | 500 ? ? |
| 8.4/7.6 ? ? | 8.4/7.6 ? ? |
| 100 ? ? | 100 ? ? |
| 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 ? ? |
| Catalog ? ? | Catalog ? ? |
| -40 to 85 ? ? | -40 to 85 ? ? |
| 14SOIC 8PDIP 8SOIC ? ? | 14SOIC 8PDIP 8SOIC ? ? |
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