数据：
TLx84x Current-Mode PWM Controllers 数据表 
TL284x和TL384x系列控制集成电路提供实现离线或DC-DC固定频率电流模式所需的功能控制方案，具有最少数量的外部组件。一些内部实现的电路是欠压锁定（UVLO），具有小于1 mA的启动电流，以及精确的基准电压，用于误差放大器输入的精度。其他内部电路包括确保锁存操作的逻辑，脉冲宽度调制（PWM）比较器（也提供限流控制），以及设计用于提供或吸收高峰值电流的图腾柱输出级。适用于驱动N沟道MOSFET的输出级在关断状态下为低电平。
| 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 |
| TL3844 | TL3842 | TL3843 | TL3845 |
|---|---|---|---|
| Boost Flyback Forward | Boost Flyback Forward | Boost Flyback Forward | Boost Flyback Forward |
| Current | Current | Current | Current |
| 17.5 | 17.5 | 9 | 9 |
| 35 | 35 | 35 | 35 |
| 500 | 500 | 500 | 500 |
| 16/10 | 16/10 | 8.4/7.6 | 8.4/7.6 |
| 50 | 100 | 100 | 50 |
| 0.2 | 0.2 | 0.2 | 0.2 |
| Adjustable Switching Frequency Current Limiting Error Amplifier Multi-topology | Adjustable Switching Frequency Current Limiting Error Amplifier Multi-topology | Adjustable Switching Frequency Current Limiting Error Amplifier Multi-topology | Adjustable Switching Frequency Current Limiting Error Amplifier Multi-topology |
| Catalog | Catalog | Catalog | Catalog |
| 0 to 70 | 0 to 70 | 0 to 70 | 0 to 70 |
| 14SOIC 8PDIP 8SOIC | 14SOIC 8PDIP 8SOIC | 14SOIC 8PDIP 8SOIC | 14SOIC 8PDIP 8SOIC |
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