WMSIC Electronic Components

TMI TMI3113H2D

ModelTMI3113H2D
PackageDFN-8-EP(2x2)
BrandTMI
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TMI TMI3113H2D
Type
TMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TMI
Electronic Component
TMI3113H2D
Electronic Component
1
Package
DFN-8-EP(2x2)
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.05g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0258345760
Operating Temperature
40℃~+85℃@(TA)
Operating Voltage
2.7V~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.

TMI3113H2D 产品概述

一 技术简介

TMI3113H2D 是拓尔微(TMI)推出的一款降压型同步整流开关稳压器,采用降压拓扑、内置功率开关,适用于对体积和效率有要求的电源设计。器件工作电压范围为 2.7V 至 5.5V,输出可调范围为 600mV 至 5.5V,最大输出电流可达 3A,开关频率 1.5MHz,静态电流仅 50μA,工作温度范围 -40℃ 到 +85℃(TA),单通道输出,封装为 DFN-8-EP(2×2)。

二 主要特性

  • 输入电压范围:2.7V ~ 5.5V
  • 可调输出:600mV ~ 5.5V(外部电阻设定)
  • 输出电流:最高 3A(瞬态及散热受板级设计影响)
  • 开关频率:1.5MHz(便于使用小体积电感与电容)
  • 同步整流:内置,提升效率、降低导通损耗,无需外接肖特基二极管
  • 低静态电流:Iq ≈ 50μA,适合电池供电系统
  • 封装:DFN-8-EP(2×2),带大散热焊盘

三 电气参数要点

TMI3113H2D 以 600mV 作为内部参考(最小可调输出即为 600mV),通过外部分压电阻设定期望输出电压。内置高、低侧开关,器件在中高负载时能保持高转换效率;在轻载情况下低 Iq 有助于延长电池寿命。请注意器件的热限和 PCB 热阻会影响持续输出能力,需结合实际散热评估。

四 封装与热管理

DFN-8-EP (2×2) 小体积利于紧凑布局,但需将底部热焊盘完整焊接至 PCB 大面积散热铜箔,并配置过孔通向多层内/底层铜箔以降低结壳热阻。3A 输出条件下,建议在评估散热及环境温度后确认降额使用或增加散热路径。

五 典型应用场景

  • 便携式与电池供电设备(物联网终端、手持仪器)
  • 工业控制与通信设备的局部电源(MCU、传感器、射频前端供电)
  • 需要紧凑电源模块的消费电子(摄像头模块、触控面板等)

六 PCB 布局与外部元件建议(实用要点)

  • 开关节点与功率回路(输入电容、器件 VIN、LX、输出电感)走线尽量短且宽,降低电磁干扰与纹波。
  • 输入电容:采用 10μF 以上 X5R/X7R 陶瓷,靠近 VIN 引脚焊盘放置。
  • 输出电容:推荐低 ESR 陶瓷电容 22μF~100μF(根据输出电流与负载瞬态要求选择),并并联小容量以改善高频响应。
  • 电感:由于 1.5MHz 高频率,常用电感值在 0.4μH~1.5μH 范围(取决于纹波电流与效率平衡),选型时注意饱和电流 > 3A。
  • 反馈网络及补偿:按应用手册选择反馈电阻与补偿元件,反馈线路靠近器件并远离噪声源。

七 设计注意事项与选型建议

  • 若系统为电池供电且需要极低待机功耗,注意器件 Iq 与待机策略(如使能控制、周期工作等)。
  • 在高输出电流场景下,重点检查 PCB 散热与器件结温,必要时采用更大散热铜箔或额外散热通孔。
  • 开发初期建议参考厂方评估板与典型应用电路,按推荐参考布局进行验证再优化。

TMI3113H2D 以其高开关频率、小尺寸封装、低静态电流与同步整流优势,适合对体积与效率敏感的单路降压电源设计。实际设计请结合厂方数据手册与 PCB 热仿真,确保满足可靠性与性能要求。

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