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TMI TMI8837S
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TMI TMI8837S
- Type
- TMI
- Minimum package
- 3000 未知
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- TMI
- Electronic Component
- TMI8837S
- Electronic Component
- 1
- Package
- SOP-8
- Electronic Component
- Brushed DC Motor Driver IC
- Electronic Component
- 0.204g
- Electronic Component
- 1
- Integrated FET
- Electronic Component
- Features
- Current Sampling
- Electronic Component
- BM0230631161
- Resistor
- 650mΩ
- Current
- 1.5A
- Operating Temperature
- 40℃~+125℃
- Operating Voltage
- 1.8V~7V
- Static Current(Iq)
- 45nA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
TMI8837S 产品概述
一、概述
TMI8837S 是拓尔微（TMI）推出的一款用于有刷直流电机驱动的专用芯片，采用 SOP-8（150 mil）封装，内部集成功率场效应管（FET），适合便携式与低压系统中的小型直流电机驱动与控制。芯片设计注重低功耗与宽工作电压范围，便于在电池供电或单节锂电池系统中直接使用。
二、主要参数
- 集成 FET：是（内部集成功率管，简化外部功率器件设计）
- 峰值电流：1.5 A（瞬态峰值能力，注意与实际连续电流区分）
- 工作电压：1.8 V ~ 7 V（支持单节锂电池及常见低压电源）
- 导通电阻（Rds(on)）：650 mΩ（影响开关损耗与发热）
- 静态电流（Iq）：45 nA（极低待机电流，利于低功耗设计）
- 工作温度范围：-40 ℃ ~ +125 ℃
- 封装：SOP-8（150 mil）
三、优势与典型应用
优势：
- 内置功率 FET，减少外部器件和 PCB 板面积；
- 宽工作电压与极低静态电流，适合电池供电和待机要求高的产品；
- 合理的峰值电流能力，可满足短时启动或冲击负载需求。
典型应用：
- 小型玩具与便携设备的直流电机驱动
- 智能家居、摄像头云台、微型机器人驱动单元
- 电动门窗、锁具与其他低功率有刷电机场景
四、设计与使用建议
- 功率与散热：Rds(on) 为 650 mΩ 时在较大占空比或连续高电流下会产生较多热量，注意评估实际连续电流（RMS），必要时采用散热优化或外接功率器件分摊热耗。
- 去耦与抑制：在芯片供电端靠近引脚放置适当的低 ESR 电容（如 1–10 μF），并考虑在电机侧增加去耦电容与 TVS 或 RC 抑制网络以抑制电机产生的反向尖峰。
- 保护与可靠性：若电机有大电流冲击或长时间高负载工作，建议在系统层面加入过流、过热保护或限流设计，避免长期超出芯片连续承受能力。
- PCB 布局：电源回路尽可能短而宽，功率回流路径要低阻抗，散热焊盘与地平面设计有助于降低结温。
五、封装与选型注意
SOP-8（150 mil）封装适合常规 PCB 组装工艺，体积与散热能力有限。在选型时应关注具体工况下的连续电流需求与热设计余量；若实际负载长期高于芯片承受范围，应考虑使用外部更低 Rds(on) 的 MOSFET 或更大功率的驱动方案。
六、总结
TMI8837S 面向低电压、低功耗的有刷直流电机驱动应用，集成 FET 与极低静态电流使其在电池供电产品中具有明显优势。合理评估负载特性与热管理并配合适当的外围抑制与保护措施，能在小型电机控制场景中提供稳定可靠的驱动能力。若需进一步资料（引脚定义、典型应用电路或波形特性），建议参考厂商详细数据手册。
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