完善资料让更多小伙伴认识你，还能领取20积分哦，立即完善>
数据： LM20143/LM20143-Q1 3-A PowerWise™ Adjustable Frequency Synchronous Buck Regulator 数据表
LM20143器件是功能齐全的PowerWise™可调频率同步降压稳压器，能够提供高达3A的连续输出电流。几乎任何类型的输出电容都可以补偿电流模式控制环路的稳定性。对于大多数情况，补偿设备只需要两个外部组件，提供最大的灵活性和易用性。该器件经过优化，可在2.95 V至5.5 V的输入电压范围内工作，适用于各种低压系统。
该器件具有内部过压保护（OVP）和过流保护（OCP）电路，提高系统可靠性。精密使能引脚和集成的UVLO可以严格控制和排序器件的开启。启动浪涌电流受内部固定和外部可调软启动电路的限制。集成电源良好电路可实现故障检测和电源排序。
通过将RT引脚与地之间的外部电阻连接，可将该器件的频率从500 kHz调整为1.5 MHz。
LM20143设计用于多轨电源架构。器件的输出电压可配置为使用SS /TRK引脚跟踪更高的电压轨。如果LM20143的输出在启动时预偏置，它将不会吸收电流以将输出拉低，直到内部软启动斜坡超过反馈引脚的电压。
| 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 |
| LM20143-Q1 | LM20123 | LM20124 | LM20125 | LM20133 | LM20134 | LM20143 | LM20144 | LM20144-Q1 | LM20145 | LM20145-Q1 | LM20154 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.95 | 2.95 | 2.95 | 2.95 | 2.95 | 2.95 | 2.95 | 2.95 | 2.95 | 2.95 | 2.95 | 2.95 |
| 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 3 | 3 | 4 | 5 | 3 | 4 | 3 | 4 | 4 | 5 | 5 | 4 |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 510 | 1500 | 1000 | 500 | 460 | 460 | 510 | 500 | 500 | 250 | 250 | 1000 |
| 1500 | 1500 | 1000 | 500 | 1500 | 1500 | 1500 | 1500 | 1500 | 750 | 750 | 1000 |
| 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 | 3.5 |
| Enable Power Good Pre-Bias Start-Up Synchronous Rectification Tracking | Adjustable Current Limit Enable Power Good Pre-Bias Start-Up Synchronous Rectification Tracking | Enable Power Good Pre-Bias Start-Up Synchronous Rectification Tracking | Enable Power Good Pre-Bias Start-Up Synchronous Rectification Tracking | Enable Frequency Synchronization Power Good Pre-Bias Start-Up Synchronous Rectification Tracking | Enable Frequency Synchronization Power Good Pre-Bias Start-Up Synchronous Rectification Tracking | Enable Power Good Pre-Bias Start-Up Synchronous Rectification Tracking | Enable Power Good Pre-Bias Start-Up Synchronous Rectification Tracking | Enable Power Good Pre-Bias Start-Up Synchronous Rectification Tracking | Enable Power Good Pre-Bias Start-Up Synchronous Rectification Tracking | Enable Power Good Pre-Bias Start-Up Synchronous Rectification Tracking | Enable Phase Interleaving Power Good Synchronous Rectification Tracking |
| Current Mode | Current Mode | Current Mode | Current Mode | Current Mode | Current Mode | Current Mode | Current Mode | Current Mode | Current Mode | Current Mode | Current Mode |
| 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 |
| -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 125 | -40 to 125 |
| Automotive | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Catalog | Automotive | Catalog | Automotive | Catalog |
| HTSSOP | HTSSOP | HTSSOP | HTSSOP | HTSSOP | HTSSOP | HTSSOP | HTSSOP | HTSSOP | HTSSOP | HTSSOP | HTSSOP |
关注我们的微信
下载发烧友APP
电子发烧友观察
版权所有 © 湖南华秋数字科技有限公司
长沙市望城经济技术开发区航空路6号手机智能终端产业园2号厂房3层（0731-88081133）
电子发烧友 （电路图） 湘公网安备43011202000918
工商网监
湘ICP备2023018690号-1
