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TMI TMI3108
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TMI TMI3108
- Type
- TMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- TMI
- Electronic Component
- TMI3108
- Electronic Component
- 1
- Package
- SOT-23-5
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.022g
- Electronic Component
- 1
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0226612929
- 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.
TMI3108 产品概述
一、概述
TMI3108 是拓尔微（TMI）推出的一款降压型同步开关稳压器，面向体积受限且需高效率供电的便携与嵌入式应用。器件输入电压范围宽（2.5V～5.5V），输出可调（0.6V～5.5V），最大输出电流可达1A，内部集成开关管并采用同步整流，工作温度范围为 -40℃～+125℃（TJ），封装为 SOT-23-5，静态电流仅 50µA，开关频率高达 1.5MHz，便于实现小尺寸外部被动元件和快速瞬态响应。
二、主要特性
- 降压拓扑，输入电压：2.5V～5.5V
- 输出电压可调：0.6V～5.5V，最高输出电流 1A
- 开关频率 1.5MHz，内置同步整流 MOSFET（无须外接肖特基）
- 低静态电流 Iq = 50µA，适合低功耗与待机场景
- 内置开关管（简化外部驱动），封装 SOT-23-5，工作温度 -40～125℃
三、电气与性能要点
TMI3108 的高开关频率使得电感、电容等滤波元件尺寸可显著减小，适合空间受限的移动设备和便携式仪器。同步整流提升轻负载到中等负载下的转换效率并降低热耗。输出通过外部分压器设定，最小输出电压 0.6V，支持多种电源轨设计。实际效率与输入/输出电压差、负载电流、外部元件品质（电感 DCR、输出电容 ESR）密切相关，PCB 散热与布局对连续 1A 输出时的热管理尤为重要。
四、典型应用
- 手机配件与可穿戴设备供电
- 单节锂电池或 USB 电源降压（2.5V～5.5V 输入）
- 工业控制模块、传感器供电与电压轨生成
- 蓝牙/无线模块、MCU 供电
五、设计与布局建议
- 推荐选用低 DCR 的功率电感（典型 1µH～2.2µH，视纹波电流与效率权衡），并选择低 ESR 的陶瓷输出电容（多层 MLCC）。
- 输入电容靠近 VIN 到 GND 布局，开关节点（SW）与电感、二极管/同步管回流路径布线尽量短、宽，减少寄生电感与辐射。
- SOT-23-5 封装散热有限，长时间 1A 输出需评估 PCB 散热面积并使用多层地平面。
- 调整输出电压时注意分压器阻值（避免过高造成噪声敏感，过低增加静态消耗），并参考数据手册进行软启动、保护参数验证。
- 高频工作下注意 EMI 管理，必要时加输入滤波与 PCB 屏蔽。
六、封装与资料
器件封装：SOT-23-5，适合小型化电路板布局。欲获得完整引脚定义、电气特性曲线、评估板参考设计与典型应用电路，请参考 TMI3108 数据手册与厂商参考设计文件，以确保满足系统的热、稳态与瞬态性能需求。
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