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LM5122是一款具有多相功能的同步升压控制器，适用于高效同步升压稳压器优化。控制方法基于峰值电流模式控制。电流模式控制可提供固有线路前馈，逐周期电流限制和简便的环路补偿。
开关频率可编程至高达1MHz。通过两个支持自适应死区时间控制的稳健耐用型N通道MOSFET栅极驱动器来实现更高效率。一个用户可选的二极管仿真模式还支持非连续模式运行，从而提高轻负载条件下的效率。
一个内部电荷泵可实现高侧同步开关的100％占空比（旁路运行）。其他功能包括热关断，频率同步，间断模式电流限制和可调线路欠压锁定。
所有商标均为其各自的商标。拥有者。
| Vin (Min) (V) |
| Vin (Max) (V) |
| Vout (Min) (V) |
| Vout (Max) (V) |
| Switch Current Limit (Typ) (A) |
| Regulated Outputs (#) |
| Switching Frequency (Min) (kHz) |
| Switching Frequency (Max) (kHz) |
| Iq (Typ) (mA) |
| Features |
| Iout (Max) (A) |
| Duty Cycle (Max) (%) |
| Operating Temperature Range (C) |
| Rating |
| Package Group |
| LM5122-Q1 | LM25122-Q1 | LM3481-Q1 | LM5020 | LM5022 | LM5022-Q1 | LM5121 | LM5121-Q1 | LM5122 | LM5122ZA | LM5150-Q1 | LM51501-Q1 | TPS40210-Q1 | TPS40211-Q1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | 3 | 2.97 | 13 | 6 | 3 | 3 | 3 | 3 | 3 | 1.5 | 1.5 | 4.5 | 4.5 |
| 65 | 42 | 48 | 100 | 60 | 60 | 65 | 65 | 65 | 65 | 42 | 42 | 52 | 52 |
| 3 | 3 | 1.275 | 1.25 | 1.25 | 1.25 | 3 | 3 | 3 | 3 | 6.8 | 6.0 | 6.4 | 6.4 |
| 100 | 50 | 500 | 300 | 300 | 300 | 100 | 100 | 100 | 100 | 10.5 | 11.5 | 300 | 60 |
| 20 | 20 | 10 | 10 | 10 | 10 | 20 | 20 | 20 | 20 | 15 | 15 | 6 | 6 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 50 | 50 | 100 | 175 | 170 | 170 | 50 | 50 | 50 | 50 | 220 | 220 | 35 | 35 |
| 1000 | 600 | 1000 | 1000 | 2200 | 2200 | 1000 | 1000 | 1000 | 1000 | 2300 | 2300 | 1000 | 1000 |
| 4 | 4 | 3.7 | 2 | 3.5 | 3.5 | 4 | 4 | 4 | 4 | 0.015 | 0.015 | 0.53 | 0.53 |
| Enable Frequency Synchronization Phase Interleaving Synchronous Rectification UVLO Adjustable | Enable Frequency Synchronization Phase Interleaving Synchronous Rectification | Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency Pre-Bias Start-Up UVLO Adjustable | Enable Frequency Synchronization Pre-Bias Start-Up | Enable Frequency Synchronization UVLO Adjustable | Enable Frequency Synchronization UVLO Adjustable | Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency Synchronous Rectification UVLO Adjustable | Enable Frequency Synchronization | Enable Frequency Synchronization Phase Interleaving Synchronous Rectification UVLO Adjustable | Enable Frequency Synchronization Phase Interleaving Synchronous Rectification UVLO Adjustable | Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency | Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency | Enable Frequency Synchronization | Enable Frequency Synchronization |
| 20 | 20 | 10 | 10 | 10 | 10 | 20 | 20 | 20 | 20 | 15 | 15 | 6 | 6 |
| 100 | 100 | 85 | 80 | 90 | 90 | 100 | 100 | 100 | 100 | 87 | 87 | 95 | 95 |
| -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 150 | -40 to 125 | -40 to 125 | -40 to 125 |
| Automotive | Automotive | Automotive | Catalog | Catalog | Automotive | Catalog | Automotive | Catalog | Catalog | Automotive | Automotive | Automotive | Automotive |
| HTSSOP | HTSSOP | VSSOP | VSSOP WSON | VSSOP | VSSOP | HTSSOP | HTSSOP | HTSSOP HTSSOP | HTSSOP | WQFN | WQFN | MSOP-PowerPAD | MSOP-PowerPAD |
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