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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应用。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所有者的财产。
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 | LM25122-Q1 | LM5020 | LM5022 | LM5121 | LM5122-Q1 | LM5122ZA |
---|---|---|---|---|---|---|
3 | 3 | 13 | 6 | 3 | 3 | 3 |
65 | 42 | 100 | 60 | 65 | 65 | 65 |
3 | 3 | 1.25 | 1.25 | 3 | 3 | 3 |
100 | 50 | 300 | 300 | 100 | 100 | 100 |
20 | 20 | 10 | 10 | 20 | 20 | 20 |
1 | 1 | 1 | 1 | 1 | 1 | 1 |
50 | 50 | 175 | 170 | 50 | 50 | 50 |
1000 | 600 | 1000 | 2200 | 1000 | 1000 | 1000 |
4 | 4 | 2 | 3.5 | 4 | 4 | 4 |
Enable Frequency Synchronization Phase Interleaving Synchronous Rectification UVLO Adjustable | Enable Frequency Synchronization Phase Interleaving Synchronous Rectification | Enable Frequency Synchronization Pre-Bias Start-Up | Enable Frequency Synchronization UVLO Adjustable | Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency Synchronous Rectification UVLO Adjustable | Enable Frequency Synchronization Phase Interleaving Synchronous Rectification UVLO Adjustable | Enable Frequency Synchronization Phase Interleaving Synchronous Rectification UVLO Adjustable |
20 | 20 | 10 | 10 | 20 | 20 | 20 |
100 | 100 | 80 | 90 | 100 | 100 | 100 |
-40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
Catalog | Automotive | Catalog | Catalog | Catalog | Automotive | Catalog |
HTSSOP HTSSOP | HTSSOP | VSSOP WSON | VSSOP | HTSSOP | HTSSOP | HTSSOP |
型号:LM5122MHX/NOPB 封装:HTSSOP-20_6.5X4.4MM-EP
品牌:TI 描述:具有多相能力的宽输入同步升压控制器 4.5V~65V HTSSOP20_6.5X4.4MM_EP
金额:¥
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