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TMI TMI3113
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TMI TMI3113
- Type
- TMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- TMI
- Electronic Component
- TMI3113
- Electronic Component
- 1
- Package
- SOT-23-6
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.027g
- Electronic Component
- 1
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0226163140
- Operating Temperature
- 40℃~+125℃@(TJ)
- Operating Voltage
- 2.7V~5.5V
- Switching Frequency
- 1MHz
- 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.
TMI3113 产品概述
一、产品简介
TMI3113 是拓尔微（TMI）推出的一款高效率、低静态电流的降压型（Buck）开关稳压器。器件集成同步整流和高性能开关管，输入电压范围 2.7V 至 5.5V，输出电流可达 3A，输出电压可调 0.6V 至 5.5V，工作开关频率 1MHz，工作结温范围 -40℃ 至 +125℃。器件采用 SOT-23-6 封装，适合空间受限的移动设备与嵌入式系统。
二、主要特性
- 输入电压 Vin：2.7V ~ 5.5V
- 输出电流：最高 3A
- 输出电压可调：0.6V ~ 5.5V（参考：VOUT = 0.6V × (1 + Rtop/Rbot)）
- 开关频率：1MHz，便于使用小体积电感与电容
- 同步整流：内置，提高轻载与重载效率，降低发热
- 静态电流 Iq：约 50µA，利于低功耗应用
- 封装：SOT-23-6，单通道降压型
三、典型应用
- 手机与平板外围电源
- 可穿戴设备与便携式仪器
- 单片机（MCU）与传感器电源
- 电源管理模块、工业控制与汽车电子（非车规需按规格确认）
四、性能与电气说明
器件在 1MHz 开关频率下可使用小型电感（典型 0.47µH 至 2.2µH，常用 1µH）以平衡纹波与效率；输入电容建议 4.7µF22µF 低 ESR 陶瓷（X5R/X7R），输出电容建议 22µF100µF 低 ESR 陶瓷以减少输出电压纹波并提升瞬态响应。输出电压通过外部反馈电阻分压调整，参考基准 600mV。
五、封装与热管理
SOT-23-6 封装适合体积受限设计，但散热能力有限。实际 PCB 布局应增加底层铜量、扩大 GND 与 VIN 散热区，保证在 3A 工作时热阻降低，避免热关断或热降额。
六、设计与布局建议
- 输入电容靠近 VIN 与 GND 引脚放置，短而宽的引线；
- 开关节点 SW 到电感走线尽量短，减小走线面积以降低 EMI；
- 输出电容靠近器件与负载，反馈网络靠近 FB 引脚布置；
- 使用完整接地平面并在 SW 周围控制敏感信号布线。
七、保护与可靠性
建议参考官方资料确认过流保护、短路保护与热关断等功能。设计时需考虑热降额与 PCB 散热，合理选择元件额定电流与电感饱和电流裕量（建议 L Isat > 3A）。
八、典型外部器件与参考电路
- 电感：1µH，电流额定 ≥ 3A，低 DCR；
- 输入电容：10µF，X7R；输出电容：47µF，X5R/X7R；
- 反馈电阻按 VOUT = 0.6 × (1 + Rtop/Rbot) 计算（Rbot 常取 10k ~ 20k 以兼顾功耗与精度）。
九、选型与注意事项
在最终设计前请参阅 TMI3113 的完整数据手册校核温升、效率曲线、启动与过载特性以及推荐 PCB 布局示意。对关键应用（如汽车或医疗）需确认器件是否满足相应资格与额定标准。
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