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TMI STI8070A
Configuration
1 options
Configuration
Option 171156
Availability on request
Technical data
Product details
19
specifications
Core information
- Product name
- TMI STI8070A
- Type
- TMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- TMI
- Electronic Component
- STI8070A
- Electronic Component
- 1
- Package
- WLCSP-20(2x1.6)
- Electronic Component
- DC-DC Power Supply IC
- Electronic Component
- 0.013g
- Electronic Component
- 1
- Features
- Output
- Type
- Electronic Component
- Synchronous
- Electronic Component
- Electronic Component
- BM0258741311
- Operating Temperature
- 40℃~+85℃@(TA)
- Operating Voltage
- 2.7V~5.5V
- Switching Frequency
- 2.1MHz
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
STI8070A 产品概述
一、产品简介
STI8070A 是拓尔微（TMI）推出的一款高集成度降压型同步整流开关稳压器，针对空间受限且要求高效率与低静态功耗的便携与嵌入式系统设计。器件集成内置开关管，单通道输出，支持可调输出，具有宽输入电压范围和高开关频率，适合为处理器、射频模块和存储器等低压大电流负载供电。
二、主要特性
- 工作类型：降压（Buck）
- 输入电压：2.7V ~ 5.5V
- 输出电压：可调 0.7125V ~ 1.5V
- 输出电流：最高 5A
- 开关频率：2.1MHz（高频利于小体积被动元件）
- 同步整流：是（降低整流损耗，提高轻载与重载效率）
- 静态电流：50µA（适合电池供电、休眠功耗敏感应用）
- 开关管：内置（简化外部布局与BOM）
- 输出通道：1 路
- 封装：WLCSP-20 (2.0 × 1.6 mm)
- 工作温度：-40℃ ~ +85℃（TA）
三、性能与优势
该器件在 2.7V~5.5V 输入下可稳健输出低至 0.7125V 的电压，提供高达 5A 的输出能力，2.1MHz 的开关频率使得外围电感和电容可选用更小尺寸的器件，有利于实现紧凑电源模组。50µA 的超低静态电流有利于延长电池寿命；同步整流与高效率设计有助于降低发热与提升系统整体能效。
四、典型应用场景
- 手机、可穿戴设备与智能终端的核心供电
- IoT 终端与无线通信模块的低压电源
- 图像传感器、FPGA/MCU/SoC 的电压轨供电
- 便携式医疗、手持工具与无人机子系统
五、封装与热管理
WLCSP-20（2×1.6 mm）封装适合超小型系统，但对PCB散热与焊盘设计敏感。建议在布局中为器件下方与周围预留热沉焊盘，增加多层铜箔过孔以改善热扩散。输入输出电容应靠近器件引脚放置以控制回路阻抗。
六、使用建议与布局要点
- 推荐使用低ESR陶瓷电容（X5R/X7R）作为输入/输出滤波器，尽量靠近器件引脚布置；
- 高频开关回路（开关节点、输入电容与电感）布线短且宽，减小环路面积；
- 输出可调通过精准的分压电阻设置，注意布线降低噪声耦合；
- 采用合适电感与电容组合以满足瞬态响应与稳定性要求；
- 注意器件工作温度范围与散热条件，评估在最大负载下的温升。
STI8070A 以其小尺寸、高频率、低静态电流与同步整流特性，成为对空间、效率与待机功耗有严格要求系统的理想降压选择。
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