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数据: LM3478 High-Efficiency Low-Side N-Channel Controller for Switching Regulator 数据表
LM3478是一款多功能低侧N沟道MOSFET控制器,适用于开关稳压器。适用于需要低侧MOSFET的拓扑结构,如提升,反激,SEPIC等。此外,LM3478可以在极高的开关频率下工作,以减小整体解决方案的尺寸。通过使用单个外部电阻,可将LM3478的开关频率调整为100 kHz至1 MHz之间的任何值。除逐周期电流限制外,电流模式控制还提供优越的带宽和瞬态响应。输出电流可通过一个外部电阻进行编程。
LM3478具有内部功能,如热关断,短路保护,过压保护等。省电关断模式可将总供电电流降至5 μA并允许电源排序。内部软启动限制了启动时的浪涌电流。
所有商标均归其所有各自所有者。
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 |
LM3478 | LM3017 | LM3481 | LM3481-Q1 | LM3488 | LM5022 | TPS40210 |
---|---|---|---|---|---|---|
2.97 | 5 | 2.97 | 2.97 | 2.97 | 6 | 4.5 |
40 | 18 | 48 | 48 | 40 | 60 | 52 |
1.26 | 6 | 1.275 | 1.275 | 1.26 | 1.25 | 5 |
500 | 20 | 500 | 500 | 500 | 300 | 300 |
10 | 1 | 10 | 10 | 10 | 10 | 6 |
1 | 1 | 1 | 1 | 1 | 1 | 1 |
100 | 400 | 100 | 100 | 100 | 170 | 35 |
1000 | 400 | 1000 | 1000 | 1000 | 2200 | 1000 |
2.7 | 1.4 | 3.7 | 3.7 | 2.7 | 3.5 | |
Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency Pre-Bias Start-Up | Enable Load Disconnect | 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 UVLO Adjustable | Adjustable Current Limit Enable Frequency Synchronization Light Load Efficiency Pre-Bias Start-Up | Enable Frequency Synchronization UVLO Adjustable | Enable Frequency Synchronization |
10 | 1 | 10 | 10 | 10 | 10 | 6 |
100 | 85 | 85 | 85 | 100 | 90 | 95 |
-40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
Catalog | Catalog | Catalog | Automotive | Catalog | Catalog | Catalog |
SOIC VSSOP | WQFN | VSSOP | VSSOP | VSSOP | VSSOP | MSOP-PowerPAD VSON |
金额:¥5.33925
去购买金额:¥3.41000
去购买型号:LM3478MMX/NOPB 封装:VSSOP8_3X3MM
品牌:TI 描述:用于开关稳压器的高效低侧N通道控制器100kHz~1MHz 2.97V~40V VSSOP8_3X3MM
金额:¥2.67697
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