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UC1525A /1527A系列脉冲宽度调制器集成电路设计用于设计所有类型的开关电源时提高性能并减少外部元件数量。片内5.1V基准电压调整为1％，误差放大器的输入共模范围包括基准电压，省去了外部电阻。振荡器的同步输出允许多个单元从属或单个单元与外部系统时钟同步。 C T 和放电终端之间的单个电阻提供大范围的死区时间调整。这些器件还具有内置insoft-start电路，仅需外部定时电容。关断端子控制软启动电路和输出级，通过脉冲关断的PWM锁存器提供瞬时关断，以及使用更长的关断命令进行软启动再循环。
所有商标均为其各自所有者的财产。
| 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 |
| UC2525A | UC2524 | UC2524A | UC2525B | UC2526A |
|---|---|---|---|---|
| Boost Buck Flyback Forward Full-Bridge Half-Bridge Push-Pull | Boost Flyback Forward Full-Bridge Half-Bridge Push-Pull | Boost Flyback Forward Full-Bridge Half-Bridge Push-Pull | Boost Buck Flyback Forward Half-Bridge Push-Pull | Boost Buck Flyback Forward Full-Bridge Half-Bridge Push-Pull |
| Voltage | Voltage | Voltage | Voltage | Voltage |
| 7 | 7.5 | 7.5 | 7 | 7 |
| 40 | 40 | 40 | 40 | 40 |
| 500 | 450 | 450 | 500 | 600 |
| 7.0/6.5 | 7.5/7 | 7.5/7 | 7.0/6.5 | 7/6.8 |
| 49 | 90 | 50 | 49 | 50 |
| 0.4 | 0.1 | 0.2 | 0.5 | 0.2 |
| Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology Soft Start Synchronization Pin | Adjustable Switching Frequency Error Amplifier Multi-topology Soft Start Synchronization Pin | Adjustable Switching Frequency Error Amplifier Multi-topology Soft Start Synchronization Pin | Adjustable Switching Frequency Current Limiting Dead Time Control Error Amplifier Multi-topology Soft Start Synchronization Pin | Adjustable Switching Frequency Dead Time Control Error Amplifier Multi-topology Soft Start Synchronization Pin |
| Catalog | Catalog | Catalog | Catalog | Catalog |
| -25 to 85 | -25 to 85 | -40 to 85 | -40 to 85 | -25 to 85 |
| 16PDIP 16SOIC | 16SOIC | 16PDIP 16SOIC | 16SOIC | 18PDIP 18SOIC |
| 无样片 | 无样片 |
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