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Hangzhou Ruimeng MS3111S
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MS3111S
- Type
- Relmon
- Minimum package
- 3000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- MS3111S
- Electronic Component
- 1
- Package
- SOT-23-6
- Electronic Component
- Brushed DC Motor Driver IC
- Electronic Component
- 0.48g
- Electronic Component
- 1
- Features
- Electronic Component
- Electronic Component
- BM0264536832
- Resistor
- 850mΩ
- Current
- 1A
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 1.8V~6V
- Output Current
- 800mA
- Static Current(Iq)
- 1uA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MS3111S 产品概述
一、概述
MS3111S 是杭州瑞盟推出的一款小型直流电机驱动芯片，封装为 SOT-23-6。器件工作电压范围宽（1.8V 至 6V），适配锂电池与多种低压电子系统；连续输出电流达 800mA，峰值可承受 1A。内部低静态电流（Iq ≈ 1µA）使其非常适合对待机功耗敏感的便携式或电池供电产品。器件集成主动制动功能，便于实现快速制动与位置控制。
二、主要电气参数
- 工作电压：1.8V ~ 6V
- 连续输出电流：800mA
- 峰值电流：1A（短时）
- 导通电阻：850mΩ（典型）
- 静态电流（Iq）：约 1µA
- 工作温度范围：-40℃ ～ +85℃
- 封装：SOT-23-6
三、功能特点
- 低电压工作：支持 1.8V 起动，适合单节或多节锂电池供电系统。
- 低静态功耗：1µA 等级静态电流，有利于延长电池寿命与降低待机损耗。
- 主动制动：通过模块内部开关控制实现电机快速制动，提升响应速度与定位精度。
- 紧凑封装：SOT-23-6 小体积，便于在空间受限的应用中集成。
- 良好驱动能力：0.85Ω 导通电阻在 800mA 工作点仍能提供稳定驱动力。
四、应用场景
- 手机/可穿戴设备振动马达驱动
- 小型玩具与模型马达控制
- 微型风扇、泵和微型致动器
- 智能家居与摄像头云台微调
- 便携式医疗与仪器设备中的驱动场景
五、热设计与性能预估
依据导通电阻，功率耗散约为 P = I^2·R。以连续 800mA 为例，P ≈ 0.8^2 × 0.85 ≈ 0.544W；峰值 1A 时 P ≈ 0.85W。SOT-23-6 封装散热受限，建议在 PCB 设计中做好导热铜箔、加宽电源与地分布、并根据实际工况对输出电流与占空比进行降额使用，避免长时间在峰值电流下工作导致过高结温。
六、布局与外围建议
- 电源旁近端放置 1µF～10µF 陶瓷旁路电容，减小瞬态电压降与 EMI。
- 在驱动端与电机之间设置抑制元件（如 RC 抑制网络或 TVS），减轻反电动势冲击。
- 布线尽量短且宽，电流回流路径直且独立，减小寄生电感与电压降。
- 若使用主动制动频繁，需评估制动期间电流峰值对器件温升的影响并选择适当的散热措施。
- 采用分离的信号地与功率地汇流于单点，有助于稳定控制信号。
七、封装与可靠性
SOT-23-6 小封装有利于空间受限的产品设计，但同时对散热提出要求。推荐在 PCB 底层做大面积铜铺设与必要的过孔热通道，提高器件的长期可靠性。器件工作温度覆盖 -40℃ 至 +85℃，适应多数工业及消费类环境，但在高温或高负载条件下应考虑功耗管理与热保护方案。
总结：MS3111S 以其宽电压、低静态功耗与主动制动能力，适合各类小功率直流电机应用。合理的 PCB 热设计与外围保护能最大化器件性能并延长系统寿命。若需原理图参考或具体布局建议，可提供系统电源与负载信息进行针对性优化。
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