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TMI STI9287C
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- TMI STI9287C
- Type
- TMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- TMI
- Electronic Component
- STI9287C
- Electronic Component
- 1
- Package
- SOT-23-6
- Type
- DC-DC
- Electronic Component
- LEDDriver
- Electronic Component
- PWM
- Electronic Component
- 0.065g
- Electronic Component
- 1
- Channel Count
- 1
- Features
- (OVP); Built-in; (OTP)
- Electronic Component
- BM0227125395
- Operating Temperature
- 40℃~+125℃
- Switching Frequency
- 1MHz~1.4MHz
- 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.
STI9287C 产品概述
一、产品简介
STI9287C 是拓尔微（TMI）推出的一款高集成度单通道升压型 DC‑DC 转换器，封装为 SOT‑23‑6。器件集成了升压开关管，工作电压范围宽（DC 2.5V ~ 5.5V），输出电压可调至 2.5V ~ 30V，开关频率高（约 1MHz ~ 1.4MHz），适用于对体积、效率和电磁兼容有较高要求的便携和车载类应用。
二、主要特性
- 升压拓扑，内置开关管（无需外置功率晶体管）；
- 输入电压：2.5V ~ 5.5V，支持单节锂电池及 5V 供电系统；
- 输出电压范围：2.5V ~ 30V，可用于驱动小功率 LED、传感器供电或偏置电路；
- 开关频率：1MHz ~ 1.4MHz，利于使用小体积电感和陶瓷电容，减小整体方案尺寸；
- 调光方式：支持 PWM 调光接口，便于数字控制亮度或占空比调节；
- 保护功能：内置过流保护（OCP）、过温保护（OTP）、过压保护（OVP）和欠压保护（UVP）；
- 工作温度范围：-40℃ ~ +125℃，适应工业级环境。
三、保护与可靠性
STI9287C 集成多重保护机制，能在输出短路或过载时触发过流保护，过热时触发过温关断，异常输入或输出电压条件下触发过/欠压保护。通常为自动恢复型保护（在故障解除后自动恢复正常工作），提高系统可靠性并降低外部保护元件需求。
四、典型应用场景
- 手持设备增压（如触摸背光、传感器供电）；
- 白光/指示灯 LED 驱动（单通道小功率场合）；
- 相机闪光或模块增压；
- 工业与车载电子中对小功率高压输出的偏置供电。
五、设计建议与注意事项
- 选型：由于工作频率高，可优先选择低 DCR、饱和电流高于预计峰值电流的功率电感；
- 二极管：若设计需要外置整流，建议使用低正向压降的肖特基二极管；
- 电容：输出与输入侧优先使用低 ESR 陶瓷电容（MLCC），注意容量及耐压裕量；
- PCB 布局：开关节点、输入与输出电容应尽量靠近芯片，缩短回流环路，保证散热路径良好；
- 散热：SOT‑23‑6 封装需合理布局铜箔以利散热，满足在高温环境下的热耗散需求；
- PWM 调光：使用开漏或开集电极方式驱动 DIM 引脚时注意电平兼容性与滤波，避免高频噪声影响稳定性。
六、封装与选购
STI9287C 提供 SOT‑23‑6 小封装，适合密集 PCB 设计。选购时请关注器件完整型号、批次及数据手册，按应用场景评估输入范围、输出功率及热设计余量，以确保长期稳定运行。
如需典型应用电路、元件取值建议或 PCB 布局参考图，可提供更多系统参数（输入电压、目标输出电压与最大负载电流）以便给出更详细的设计方案。
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