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TPS51225 /B /C是一款针对笔记本电脑系统电源解决方案的高性价比，双同步降压控制器。它提供5V和3.3V LDO并且只需要使用极少的外部组件.260kHz VCLK输出可被用于驱动一个外部电荷泵，为负载开关生成栅极驱动电压而不会降低主转换器的效率.TPS51225 /B /C支持高效率，快速瞬态响应并提供一个组合电源正常信号。自适应接通时间，D-CAP™控制提供便捷且有效的运行。这一器件运行电源输入电压范围介于5.5V至24V之间并且支持5.0 V和3.3V的输出电压.TPS51225 /B /C采用20引脚，3mm x 3mm，QFN封装，额定运行温度-40°C至85°C。
| Vin (Min) (V) |
| Vin (Max) (V) |
| Vout (Min) (V) |
| Vout (Max) (V) |
| Iout (Max) (A) |
| Regulated Outputs (#) |
| Number of Phases |
| Switching Frequency (Min) (kHz) |
| Switching Frequency (Max) (kHz) |
| Iq (Typ) (mA) |
| Features |
| Duty Cycle (Max) (%) |
| Operating Temperature Range (C) |
| Rating |
| Package Group |
| Control Mode |
| TPS51225B | TPS51225 | TPS51225C | TPS51275B | TPS51275B-1 | TPS51285A | TPS51285B |
|---|---|---|---|---|---|---|
| 5.5 | 5.5 | 5.5 | 5 | 5 | 5 | 5 |
| 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| 4.5 | 4.5 | 4.5 | 4.5 | 4.85 | 4.5 | 4.5 |
| 5.5 | 5.5 | 5.5 | 5.5 | 5.1 | 5.5 | 5.5 |
| 10 | 10 | 10 | 20 | 20 | 20 | 20 |
| 2 | 2 | 2 | 4 | 2 | 2 | 2 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 300 | 300 | 300 | 300 | 300 | 400 | 400 |
| 355 | 355 | 355 | 355 | 355 | 475 | 475 |
| 0.9 | 0.9 | 0.9 | 0.8 | 0.8 | 0.084 | 0.084 |
| Enable Light Load Efficiency Power Good Synchronous Rectification | Enable Light Load Efficiency Power Good Synchronous Rectification | Enable Light Load Efficiency Power Good Synchronous Rectification | Enable Light Load Efficiency Power Good Synchronous Rectification | Enable Power Good Synchronous Rectification | Enable Light Load Efficiency Power Good Synchronous Rectification | Enable Light Load Efficiency Power Good Synchronous Rectification |
| 90 | 90 | 90 | 95 | 95 | 100 | 100 |
| -40 to 85 | -40 to 85 | -40 to 85 | -40 to 125 | -40 to 85 | -40 to 85 | -40 to 85 |
| Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
| WQFN | WQFN | WQFN | WQFN | WQFN | WQFN | WQFN |
| D-CAP | D-CAP | D-CAP | D-CAP | D-CAP | ||
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