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TMI TMI3408C
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TMI TMI3408C
- Type
- TMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- TMI
- Electronic Component
- TMI3408C
- Electronic Component
- 1
- Package
- SOT-23-5
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.049g
- Electronic Component
- 1
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0226613087
- Operating Temperature
- 40℃~+125℃@(TJ)
- Operating Voltage
- 2.5V~5.5V
- Switching Frequency
- 1.5MHz
- Electronic Component
- Electronic Component
- Output Voltage
- 600mV~5.5V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
TMI3408C 降压稳压器产品概述
一. 概述
TMI3408C 是拓尔微（TMI）推出的一款高效率同步整流降压型 DC-DC 转换器，工作输入电压范围为 2.5V 至 5.5V，输出电压可调范围 0.6V 至 5.5V，最大输出电流 1.5A。内部集成开关管，开关频率 1.5MHz，静态工作电流仅 50µA，工作结温范围 -40℃ 至 +125℃，采用 SOT-23-5 小封装，适合便携式、电池供电及空间受限的应用场景。
二. 主要特性
- 输入电压：2.5V ~ 5.5V
- 输出电压：可调 0.6V ~ 5.5V（参考内部基准 600mV）
- 最大输出电流：1.5A（同步整流，内置开关）
- 开关频率：1.5MHz（高频有助于减小外部元件尺寸）
- 静态电流（Iq）：50µA（适合低功耗/待机场景）
- 工作温度：-40℃ ~ +125℃（TJ）
- 封装：SOT-23-5，单通道降压拓扑
三. 应用场景
- 便携式设备与移动电源
- 物联网终端、传感器节点、电池管理前端
- 通信模块供电、单板系统局部电源转换
- 需要低静态电流与小尺寸电源方案的嵌入式设备
四. 典型电路与设计要点
- 输出设定：VOUT = 0.6V × (1 + Rtop / Rbot)。例如要得到 3.3V，可选 Rbot = 100kΩ，Rtop ≈ 450kΩ（可选标准值）。
- 电感：由于 1.5MHz 工作频率，推荐选择低 DCR、饱和电流 >1.5A 的小体积功率电感，典型 0.47µH ~ 2.2µH 视输出电压与纹波要求而定。
- 电容：输入侧建议使用 4.7µF ~ 22µF 陶瓷电容（X5R/X7R），输出侧使用 10µF ~ 47µF 陶瓷以降低输出纹波。低 ESR 陶瓷电容有助提高瞬态响应与稳定性。
- 布局：最小化 VIN、SW、GND 与输入电容的回流环路面积；输出电容尽量靠近芯片输出与地端；将电感放置于芯片与输出电容之间，保持短、粗的电路走线以降低寄生。
五. 散热与可靠性
SOT-23-5 封装空间有限，持续靠近额定输出电流时需关注封装热阻与 PCB 散热。设计时采用较大铜箔和良好地平面，于高负载应用评估结温，必要时提高 PCB 散热面积或降额运行。
六. 优势总结
TMI3408C 以小封装、高开关频率与低静态电流为特点，适合在空间与功耗受限的系统中实现高效降压转换。同步整流与集成开关管简化外围器件，缩小 BOM 和尺寸，便于快速集成到各类便携与嵌入式电源方案中。
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