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LM3017是一款多用途低侧NFET控制器,此控制器整合了真正关断和输入侧限流功能。它用Thunderbolt™技术LM3017也可针对反激或单端初级电感转换器(SEPIC)设计进行配置。输入电压范围介于5V到18V之间时,可采用两块或三块锂离子电池或12V电压轨。启用引脚仅需单一次输入即可驱动三种不同的运行模式:升压模式,直通模式或关断模式.LM3017在关断模式下汲取很低的电流,通常情况下从输入电源汲取40nA的电流。
为了驱动针对主机Thunderbolt™端口的功率负载开关或多路复用器,LM3017提供一个可调输出。它还能驱动一个外部的高侧NMOS,以实现负载与输入的真正隔离。输入端的限流功能可确保涌入电流和短路电流始终在控制范围内.LM3017整合了内置热关断,逐周期限流,短路保护,过压保护软启动。它采用10引脚QFN封装。
| 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 |
| LM3017 | LM3478 | LM3481 | LM3488 | LM5022 | TPS40210 |
|---|---|---|---|---|---|
| 5 | 2.97 | 2.97 | 2.97 | 6 | 4.5 |
| 18 | 40 | 48 | 40 | 60 | 52 |
| 6 | 1.26 | 1.275 | 1.26 | 1.25 | 5 |
| 20 | 500 | 500 | 500 | 300 | 300 |
| 1 | 10 | 10 | 10 | 10 | 6 |
| 1 | 1 | 1 | 1 | 1 | 1 |
| 400 | 100 | 100 | 100 | 170 | 35 |
| 400 | 1000 | 1000 | 1000 | 2200 | 1000 |
| 1.4 | 2.7 | 3.7 | 2.7 | 3.5 | |
| Enable Load Disconnect | Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency Pre-Bias Start-Up | Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency Pre-Bias Start-Up UVLO Adjustable | Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency Pre-Bias Start-Up | Enable Frequency Synchronization UVLO Adjustable | Enable Frequency Synchronization |
| 1 | 10 | 10 | 10 | 10 | 6 |
| 85 | 100 | 85 | 100 | 90 | 95 |
| -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| Catalog | Catalog | Catalog | Catalog | Catalog | Catalog |
| WQFN | SOIC VSSOP | VSSOP | VSSOP | VSSOP | MSOP-PowerPAD VSON |