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HGSEMI LM7912S/TR LM7912S
Configuration
1 options
Configuration
Electronic Component
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HGSEMI LM7912S / TR
- Type
- HGSEMI
- Minimum package
- 500 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HGSEMI
- Electronic Component
- LM7912S/TR
- Electronic Component
- 1
- Package
- TO-263-3
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 2.37g
- Electronic Component
- 1
- Electronic Component
- BM0265079691
- Operating Voltage
- 35V
- Output
- Electronic Component
- Output Voltage
- 11.52V~12.48V
- Output Current
- 1A
- Output Type
- Electronic Component
- Output Channel Count
- 1
- Static Current(Iq)
- 7.8mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LM7912S/TR 产品概述
一、产品简介
LM7912S/TR 是华冠（HGSEMI）推出的一款固定输出（-12V）线性稳压器，采用 TO-263-3 封装，面向需要负电源轨的低功耗到中等功率应用。器件集成热保护与过流保护，稳定性与可靠性适合工业和消费类电源设计。
二、主要参数
- 输出类型：固定（负极）
- 输出电压：11.52V ～ 12.48V（典型标称 -12V，允许范围见规格）
- 最大工作电压：35V（输入端允许的电压等级，实际应参考数据手册）
- 输出电流：1A（单通道）
- 静态电流（Iq）：7.8mA
- 保护特性：过热保护、过流保护
- 封装：TO-263-3（散热良好，适合集成至 PCB 或外接散热器）
三、关键特性说明
- 稳压精度：器件在规定输入/负载范围内维持稳定的 -12V 输出（实际范围见前述输出电压区间）。
- 保护机制：内置过流与过热保护，可在异常工况下限制电流并通过热关断保护器件与负载。
- 低待机电流：7.8mA 的静态电流有利于降低空载功耗，但在电池供电系统中仍需考虑整体能耗。
- 封装与散热：TO-263-3 适合中等功率散热，必要时推荐加大铜箔或外接散热片以提高热耗散能力。
四、典型应用场景
- 运放、模拟电路的负电源轨（±12V 系统中负端）
- 工业控制与传感器接口电源
- 通信设备与仪器仪表中需要稳定负电压的子系统
- 低噪声单片放大器电源
五、使用建议与注意事项
- 输入端应并联适当的去耦电容以抑制瞬态与振荡；输出端根据电路稳定性需求配置电容，具体数值与 ESR 要求请参照厂商资料。
- 封装热设计很关键：在高耗散或长时间大电流工作下，应在 PCB 上设计充足的铜面积并考虑外部散热片或风冷。
- 在实际电路中，建议遵循华冠提供的数据手册进行引脚连接与布局，避免因接线或布局不当引起振荡或热失控。
- 若需更高电流或更低压差，应在选型时考虑替代型号或使用并联/外部功率器件配合。
六、后续资料与选型提示
本概述基于器件主要性能要素汇总，详细的引脚排列、最大额定值、温度特性曲线与典型应用电路请以华冠（HGSEMI）官方数据手册为准。选型时同时考虑输入电压裕量、最大功耗及系统的热管理方案。
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