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HGSEMI LM1085S-5.0/TR LM1085S
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HGSEMI LM1085S-5.0 / TR
- Type
- HGSEMI
- Minimum package
- 500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 1.2V@(3A)
- Electronic Component
- HGSEMI
- Electronic Component
- 0.003%Vout
- Electronic Component
- LM1085S-5.0/TR
- Electronic Component
- 1
- Package
- TO-263-3
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 2.062g
- Electronic Component
- 1
- Electronic Component
- BM0226054630
- Operating Temperature
- 0℃~+125℃@(Tj)
- Operating Voltage
- 7V
- Output
- Electronic Component
- Output Voltage
- 5V
- Output Current
- 3A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LM1085S-5.0/TR 产品概述
一、产品简介
LM1085S-5.0/TR 是一款由 HGSEMI（华冠）提供的高电流、低压差线性稳压器（LDO），为固定 5.0V 输出版本，单通道正极输出设计。器件采用 TO-263-3（D2PAK）封装，适合需要稳定 5V 电源、输出电流高达 3A 的板载供电场景，如工业控制、通信设备、嵌入式系统和电源模块后级稳压等。
二、主要参数
- 输出类型：固定（5.0V）
- 最大发电电流：3A
- 压差（Dropout）：约 1.2V @ 3A
- 噪声：0.003% × Vout（极低输出噪声）
- 保护特性：过热保护、过流保护
- 工作结温：0℃ ~ +125℃（Tj）
- 输出极性：正极，单通道
- 封装：TO-263-3（便于表面贴装与散热处理）
三、关键特性与优势
- 低压差特性：在大电流输出时仍可保持较低的压降，适合 Vin 接近 Vout 的应用场合。
- 高输出电流能力：3A 连续输出能力满足多数中功率负载需求。
- 保护功能齐全：集成过温和过流保护，提升系统可靠性并简化外围保护电路设计。
- 低噪声输出：0.003%Vout 的低噪声特性，有利于对噪声敏感的模拟与通信电路。
四、热管理与封装建议
TO-263-3 封装便于将热量通过封装底部和焊盘传导至 PCB 平面。实际应用中，应根据输入电压与输出电流计算功耗 P = (Vin - Vout) × Iout，并据此设计足够的铜箔散热面积或添加散热片。例如在 Vin=7V、Iout=3A 时，功耗约 6W，需注意良好散热以避免触发过热保护。
五、典型应用场景
- 单板电源稳压：为 MCU、FPGA 等器件提供稳定 5V 电源。
- 通信与网络设备：基站、交换机模块中的板级稳压。
- 工业控制：传感器、执行器与控制模块的稳压电源。
- 电源模块后级：开关电源后端的低噪声线性稳压器。
六、使用建议与注意事项
- 输入电压选择：输入电压应高于 Vout 加上压差（在最大负载下约 1.2V）；实际输入上限请以产品完整数据手册为准，并预留余量以保证稳压稳定。
- 输出电容与稳定性：为保证环路稳定性与瞬态响应，建议在输入、输出端分别配置适当的去耦电容（参照器件数据手册选择电容类型与容量）。
- 散热设计：在高电流或高 Vin 场合，增大 PCB 散热铜箔面积或采用外部散热器，避免长期工作在高结温区域。
- 保护与布局：靠近器件放置输入滤波与旁路电容，确保良好接地，减少寄生阻抗对稳定性的影响。
总结：LM1085S-5.0/TR 以其低压差、高电流与低噪声的组合，适合对稳压品质与可靠性有较高要求的中功率应用。设计时应重视散热与电容选择，以发挥器件的最佳性能。若需更详细的电气参数、引脚定义与典型应用电路，请参考 HGSEMI 提供的完整数据手册。
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