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TMI TMI8837
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TMI TMI8837
- Type
- TMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- TMI
- Electronic Component
- TMI8837
- Electronic Component
- 1
- Package
- DFN-8-EP(2x2)
- Electronic Component
- Brushed DC Motor Driver IC
- Electronic Component
- 0.018g
- Electronic Component
- 1
- Integrated FET
- Electronic Component
- Features
- Current Sampling
- Electronic Component
- BM0226163156
- 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.
TMI8837 产品概述
一、产品简介
TMI8837 是拓尔微（TMI）推出的一款针对小功率有刷直流电机的驱动芯片，集成全桥功率开关（Integrated FET），适用于单电池及多电池供电场景。芯片封装为 DFN-8-EP（2×2 mm），体积小、功耗低，便于便携式与空间受限的电机驱动应用。
二、主要规格
- 工作电压：1.8 V ~ 7.0 V
- 峰值输出电流：1.5 A（峰值）
- 导通电阻（Rds(on)）：650 mΩ（典型）
- 静态电流（Iq）：45 nA（极低待机电流）
- 工作温度范围：-40 ℃ ~ +125 ℃
- 集成结构：内置 H 桥功率 FET，简化外部器件
三、功能与保护
TMI8837 为有刷直流电机提供完整驱动功能，通常包含正反转控制、PWM 调速输入与使能控制。芯片设计注重低待机与保护机制，支持常见保护功能（如过流保护、过热关断、欠压锁定等），以提升系统可靠性。具体门限值和保护行为请参照官方数据手册。
四、封装与热管理
封装：DFN-8-EP (2×2 mm) 带底部散热焊盘。
建议在 PCB 设计中：
- 在器件底部焊盘下增加多层过孔连接到内部与底层铜箔以改善导热；
- 在电源与地之间靠近芯片放置 4.7–22 µF 的低 ESR 陶瓷旁路电容，减小瞬态压降；
- 对电机电流回路使用宽铜箔与短回流路径，降低寄生阻抗与干扰。
五、典型应用与设计建议
适用于玩具、手持小型工具、智能家居窗帘微电机、机器人舵机与便携泵等小功率直流电机驱动场景。设计时建议：
- 使用 PWM 控制实现平滑调速，频率依据电机特性与 EMI 要求选择（常见 5–20 kHz）；
- 在靠近电机端放置 TVS 或二极管与 RC 滤波器以抑制反向尖峰；
- 若需检测电流，可在电源侧或电流回路加入电流感测元件并选择合适的滤波与采样方案。
六、注意事项与选型建议
- 当工作电流接近或超过器件峰值能力时，应评估热降额并考虑更大功率器件或外加散热措施；
- 对低功耗电池系统，TMI8837 的 45 nA 待机电流有利于延长待机时间；
- 购买与使用前请核对最新数据手册以确认时序、引脚定义与保护阈值。
型号示例与封装标注：TMI8837 DFN-8-EP (2×2)；品牌：TMI（拓尔微）。如需具体电气时序图、引脚排列与典型应用电路图，请提供后可进一步整理数据手册要点与 PCB 布局示意。
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