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LM3103同步整流降压转换器具有实现低成本高效率的降压稳压器所需的全部功能。可为负载提供0.75A及低至0.6V的输出电压。双N沟道同步MOSFET同步开关允许使用少量组件,从而降低复杂性,并最大限度地减少布板尺寸。
LM3103不同于大多数其他COT稳态ES器来获得稳定性,专为与陶瓷及其他ESR极低的输出电容器完美配合工作而设计。它无需环路补偿,从而实现快速负载瞬态响应,并简化电路实现。由于输入电压和导通时间之间呈反比关系,因此在线路发生变化时,器件的工作频率几乎保持恒定。通过外部编程,工作频率可高达1MHz。保护特性包括V CC 欠压锁定,输出过压保护,热关断和栅极驱动欠压锁定.LM3103采用热增强型HTSSOP-16封装。
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) |
| Iout (Max) (A) |
| Regulated Outputs (#) |
| Switching Frequency (Min) (kHz) |
| Switching Frequency (Max) (kHz) |
| Iq (Typ) (mA) |
| Features |
| Control Mode |
| Duty Cycle (Max) (%) |
| Operating Temperature Range (C) |
| Rating |
| Package Group |
| LM3103 | LM3100 | LM3102 | LM3102-Q1 |
|---|---|---|---|
| 4.5 | 4.5 | 4.5 | 4.5 |
| 42 | 36 | 42 | 42 |
| 0.6 | 0.8 | 0.8 | 0.8 |
| 7 | 7 | 7 | 7 |
| 0.75 | 1.5 | 2.5 | 2.5 |
| 1 | 1 | 1 | 1 |
| 200 | 200 | 200 | 200 |
| 1000 | 1000 | 1000 | 1000 |
| 1 | 1 | 1 | 1 |
| Enable Synchronous Rectification Tracking | Enable Synchronous Rectification Tracking | Enable Synchronous Rectification Tracking | Enable Synchronous Rectification |
| COT with emulated ripple | COT with emulated ripple | COT with emulated ripple | COT with emulated ripple |
| 94 | 94 | 94 | 94 |
| -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| Catalog | Catalog | Catalog | Automotive |
| HTSSOP | HTSSOP | DSBGA HTSSOP | HTSSOP |