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Slkor SL9451
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Slkor SL9451
- Type
- SLKOR
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SLKOR
- Electronic Component
- SL9451
- Electronic Component
- 1
- Package
- SOT-23-6L
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.044g
- Electronic Component
- 1
- Features
- Built-in LDORegulator
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0228146954
- Operating Temperature
- 40℃~+125℃@(TJ)
- Operating Voltage
- 4.2V~40V
- Switching Frequency
- 1.4MHz~2.2MHz
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SL9451 产品概述
一、产品简介
SL9451（Slkor 萨科微）是一款降压型开关稳压器，工作电压范围宽（4.2V40V），最大输出电流可达600mA，开关频率位于1.4MHz2.2MHz，采用内置开关管的单通道非同步降压拓扑，输出为可调型，静态电流仅约200µA，工作结温范围为-40℃到+125℃。封装为SOT-23-6L，适合体积受限但需高效降压的应用场景。注意：尽管用户描述中提到“线性稳压器”，但根据工作频率与拓扑，SL9451实为降压开关稳压器而非线性器件。
二、主要特性
- 宽输入电压：4.2V ~ 40V，适用于电池组、12V/24V轨及工业电源。
- 输出电流：最高600mA，适合中小功率负载。
- 高频工作：1.4MHz~2.2MHz，有利于缩小外部电感与滤波电容。
- 低静态电流：Iq ≈ 200µA，有利于待机与低功耗应用。
- 非同步整流：需外接肖特基二极管作为续流元件。
- 可调输出：通过外部电阻分压设置目标输出电压。
- 封装：SOT-23-6L，小封装适合集成化设计。
三、典型外部元件与设计要点
- 续流二极管：选择低正向压降肖特基，耐压≥输入最大电压，平均电流≥600mA。
- 电感：推荐饱和电流高于600mA的功率电感，电感值常见范围1µH~4.7µH（根据占空比与纹波要求调整）。
- 输入/输出电容：优先选择低ESR陶瓷（X5R/X7R），输入端常用4.7µF22µF，输出端10µF100µF，根据纹波与瞬态要求调节。
- 布局：VIN与GND电容靠近器件引脚，开关节点（SW）走线最短并避开敏感模拟线路，肖特基二极管靠近SW节点布置以降低寄生与辐射。
- 热管理：SOT-23-6L热阻较高，对高输入电压大功率降压时注意热限，必要时增加铜箔散热或降低占空比/输入电压。
四、典型应用
- 便携设备与电池管理（需要宽输入与低静态电流）
- 工业控制与PLC模块（24V/48V前端降压）
- 通信外围电源与模块供电
- 车辆电子（需注意瞬态与EMC设计）
五、选型建议
在选型时确认最大输入电压及瞬态、输出电流峰值与平均值、效率与散热需求。若系统需更高效率或免外部二极管，可考虑同步整流器件；若追求更简洁的线性方案且功耗允许，则线性稳压器仍是替代方案。
如需基于具体输入/输出/纹波/效率目标的元件选型计算与参考电路图，我可提供详细设计建议与典型元件清单。
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