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LM25116是一款同步降压控制器，适用于高压或广泛变化的输入电源的降压稳压器应用。控制方法基于使用仿真电流斜坡的电流模式控制。电流模式控制提供固有的线路前馈，逐周期电流限制和易于环路补偿。仿真控制斜坡的使用降低了脉冲宽度调制电路的噪声灵敏度，允许可靠地控制高输入电压应用中所需的非常小的占空比。工作频率可在50 kHz至1 MHz范围内编程。 LM25116通过自适应死区时间控制驱动外部高端和低端NMOS电源开关。用户可选择的二极管仿真模式可实现非连续模式操作，从而在轻负载条件下提高效率。低静态电流关断会禁用控制器，并且总输入电流消耗不到10μA。其他功能包括高压偏置调节器，自动切换到外部偏置以提高效率，热关断，频率同步，逐周期电流限制和可调节线路欠压锁定。该器件采用功率增强型20引脚HTSSOP封装，具有裸露的芯片粘接垫，有助于散热。
| 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 |
| LM25116 | LM25117 | LM25141 | LM25145 | LM3150 | LM5116 | LM5116WG | TPS40200 |
|---|---|---|---|---|---|---|---|
| 6 | 4.5 | 3.8 | 6 | 6 | 6 | 6 | 4.5 |
| 42 | 42 | 42 | 42 | 42 | 100 | 100 | 52 |
| 1.215 | 0.8 | 1.5 | 0.8 | 0.6 | 1.215 | 1.215 | 0.7 |
| 36 | 41 | 15 | 40 | 40 | 80 | 80 | 46 |
| 20 | 20 | 20 | 30 | 12 | 20 | 20 | 3 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| 50 | 50 | 350 | 100 | 200 | 50 | 50 | 35 |
| 1000 | 750 | 2600 | 1000 | 1000 | 1000 | 1000 | 500 |
| 4.6 | 4.8 | 0.035 | 1.8 | 3.5 | 4.6 | 4.6 | 1.5 |
| Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency Synchronous Rectification | Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency Synchronous Rectification Tracking UVLO Adjustable | Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency Power Good Pre-Bias Start-Up Spread Spectrum Synchronous Rectification UVLO Fixed | Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency Power Good Pre-Bias Start-Up Synchronous Rectification Tracking UVLO Adjustable | Adjustable Current Limit Enable Frequency Synchronization Pre-Bias Start-Up Synchronous Rectification UVLO Adjustable | Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency Synchronous Rectification UVLO Adjustable | Enable Frequency Synchronization Light Load Efficiency | Frequency Synchronization |
| 98 | 98 | 99 | 99 | 96 | 98 | 98 | 90 |
| -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 150 | -40 to 125 | -40 to 85 |
| Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
| HTSSOP | HTSSOP WQFN | VQFN | VQFN | HTSSOP | HTSSOP | CFP | SOIC SON |
| Current Mode | Current Mode | Current Mode | Voltage Mode | COT with emulated ripple | Current Mode | Current Mode | Voltage Mode |
| 无样片 |
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