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TMI TMI8118S
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TMI TMI8118S
- Type
- TMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- TMI
- Electronic Component
- TMI8118S
- Electronic Component
- 1
- Package
- SOP-8
- Electronic Component
- Brushed DC Motor Driver IC
- Electronic Component
- 0.115g
- Electronic Component
- 1
- Integrated FET
- Electronic Component
- H
- 1
- Features
- Electronic Component
- Electronic Component
- BM0230120846
- Resistor
- 530mΩ
- Current
- 2A
- Operating Temperature
- 30℃~+85℃
- Operating Voltage
- 1.6V~7.2V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
TMI8118S 产品概述
一、概述
TMI8118S 是拓尔微（TMI）面向有刷直流电机驱动的单路 H 桥驱动芯片，采用 SOP‑8（150 mil）封装，内置功率 MOSFET，适合电池供电和便携类小功率电机驱动场合。器件工作电压范围宽（1.6V～7.2V），并且静态电流极低，适合对待机功耗敏感的系统。
二、主要参数
- 集成 FET：是（内置功率 MOSFET，减少外部元件）
- H 桥 数量：1 路
- 峰值电流：2 A（峰值能力）
- 工作电压：1.6 V ～ 7.2 V（适用单节锂电池或低压电源）
- 导通电阻 RDS(on)：530 mΩ（标称值）
- 静态电流 Iq：100 nA（极低待机功耗）
- 工作温度：-30 ℃ ～ +85 ℃
- 封装：SOP‑8（150 mil）
三、主要特性与优势
- 内置功率 MOSFET，简化外围设计与 PCB 布局，缩小整体方案体积。
- 宽电压范围支持单节锂电池至多节电池或低压稳压供电，灵活性高。
- 极低静态电流（100 nA）有利于延长电池寿命，适合长时间待机或间歇工作场景。
- SOP‑8 封装便于中小批量生产与现有通用 PCB 工艺兼容。
四、典型应用
- 小型玩具电机驱动、微型车模驱动
- 智能门锁、摄像头云台、家用小型执行器
- 便携式风扇、散热风扇驱动
- 电池供电的低功耗设备中的单路直流电机控制
五、设计与使用建议
- 热耗散管理：标称 RDS(on) 为 530 mΩ，若按 H 桥导通路径两只 MOSFET 串联计算，等效导通电阻约为 1.06 Ω。峰值 2 A 时瞬态损耗可达约 4.2 W（P = I^2·R），因此不建议长时间在峰值电流下连续工作，应通过限流、降低占空比或增加散热（扩大铜箔、加散热片）来控制结温。
- 电源去耦：在芯片电源输入处放置适当的旁路电容（如 1 μF～10 μF 陶瓷），减小瞬态电压扰动。
- 电机抑制：为降低电磁干扰与反向尖峰，应在电机端或电源端加抑制电路（如 RC、TVS 或电容）并注意接地布线。
- 保护与检测：若系统对过流/过温保护有严格要求，建议外加检测与保护电路（限流电阻、熔断器或外部监控器件），并参照完整数据手册评估器件内部保护功能。
六、注意事项
- 峰值电流与连续电流不同，选择驱动电流时以长期稳定工作条件为准并考虑热设计裕量。
- 具体功能脚位、电平阈值及内部保护特性（如短路限流、热关断等）请以厂商数据手册为准，样片评估时应做完整的电气与热测试。
七、封装与采购
- 封装形式：SOP‑8（150 mil），适合通用插装与贴装工艺。
- 品牌：TMI（拓尔微）。欲开展样片评估或批量采购，请联系供应商获取完整规格书、封装图与推荐 PCB 布局示意，以保障设计可靠性。
总结：TMI8118S 适用于对体积、成本和低待机功耗有要求的低压小功率有刷直流电机应用。在使用时需关注热耗散与连续电流限制，并按照厂商数据手册完成电气与热性能验证。
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