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TMI STI9287
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TMI STI9287
- Type
- TMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- TMI
- Electronic Component
- STI9287
- Electronic Component
- 1
- Package
- SOT-23-6
- Type
- DC-DC
- Electronic Component
- LEDDriver
- Electronic Component
- PWM; Analog
- Electronic Component
- 0.052g
- Electronic Component
- 1
- Channel Count
- 1
- Features
- (OVP); Built-in; (OTP)
- Electronic Component
- BM0226163424
- Operating Temperature
- 40℃~+125℃
- Switching Frequency
- 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.
STI9287 产品概述
一、产品简介
STI9287 是拓尔微（TMI）推出的一款高集成度单通道升压型开关稳压器/LED 驱动芯片。器件内置功率开关，工作电压范围宽（DC 2.5V～7V），开关频率高达 1MHz，可实现紧凑尺寸与低外部元件数量的解决方案。支持 PWM 与模拟双路调光方式，适用于单路高亮 LED 驱动、便携与车载背光、通用升压电源等场景。工作温度范围为 -40℃～+125℃，并在 SOT-23-6 小封装中提供商业级与工业级应用所需的可靠性。
二、主要特性
- 拓扑结构：升压（Boost）拓扑，适合低电压升高至 LED 或负载所需电压。
- 开关参数：内部功率开关，开关频率 1MHz，利于减小电感与电容体积。
- 保护功能：集成过流保护（OCP）、过温保护（OTP）、过压保护（OVP）与欠压保护（UVP），提高系统可靠性与安全性。
- 调光控制：支持 PWM 调光与模拟调光，兼容多种亮度控制需求。
- 工作环境：工作温度范围 -40℃～+125℃，适应工业与车载等恶劣环境。
- 封装与品牌：TMI（拓尔微）品牌，SOT-23-6 小尺寸封装，便于空间受限的 PCB 布局。
三、典型应用
- 单路高亮 LED 驱动（手电、筒灯、指示灯、背光）
- 便携设备的升压电源（可为传感器、显示模块供电）
- 汽车电子与车载照明（在满足工作温度与保护要求下）
- 工业控制与通信设备中需要紧凑升压转换的场合
四、设计要点与建议
- 开关频率高，优先选用低 DCR 的小体积电感与低 ESR 的输入/输出电容，以降低发热与纹波。
- 由于内置开关，布局时应尽量缩短开关回路环路（开关管、二极管、电感及输入电容）以降低 EMI。
- 保护机制可在异常情况下保证器件与负载安全，但仍需根据应用场景选配合适的熔断器或 TVS 做二次保护，特别是车载与工业环境。
- 调光接口（PWM/模拟）应考虑滤波与接地设计，避免开关噪声影响调光精度。
- 热管理：SOT-23-6 封装热阻相对较大，长时间高功率工作需评估并优化散热路径与 PCB 铜箔面积。
五、封装与可靠性信息
- 封装形式：SOT-23-6，适合表面贴装工艺。
- 温度与可靠性：器件额定工作温度 -40℃～+125℃，内置多种保护逻辑，适合工业级应用。
- 可扩展性：单通道设计适合点对点驱动，若需多路控制，可采用多芯片并行或外围 MOSFET 配合实现更复杂的驱动拓扑。
总结：STI9287 以其高集成度、宽工作电压、高开关频率与完善保护功能，为需要紧凑升压与可调光控制的单通道应用提供了高性价比解决方案。设计时关注开关回路布局与热管理，可获得稳定可靠的系统表现。
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