WMSIC Electronic Components

HGSEMI LM7912CT

ModelLM7912CT
PackageTO-220-3
BrandHGSEMI
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
HGSEMI LM7912CT
Type
HGSEMI
Minimum package
50 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
LM7912CT
Electronic Component
1
Package
TO-220-3
Electronic Component
Linear Regulator(LDO)
Electronic Component
2.954g
Electronic Component
1
Electronic Component
BM0264336344
Operating Temperature
0℃~+125℃
Operating Voltage
35V
Output
Electronic Component
Output Voltage
12V
Output Current
1.5A
Output Type
Electronic Component
Output Channel Count
1

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

LM7912CT 产品概述

一、产品简介

LM7912CT 是华冠(HGSEMI)推出的一款负极输出线性稳压器(LDO)1.5A版本,提供稳定的 -12V 固定输出,适用于对负电源要求严格的模拟与混合信号系统。器件集成短路保护与热关断功能,便于在异常工况下保护负载与自身安全。

二、主要规格

  • 输出极性:负极(-12V 固定输出)
  • 输出电压:-12V
  • 最大输出电流:1.5A
  • 工作电压(输入端最高耐压):35V
  • 静态电流(Iq):7.8mA
  • 输出类型:固定输出,单通道
  • 保护特性:短路保护、热关断
  • 工作温度范围:0℃ ~ +125℃
  • 品牌:HGSEMI(华冠)
  • 封装:待确认(使用前请参考完整数据手册)

三、性能与应用要点

  • 稳定性与旁路:为保证环路稳定与抗干扰,一般建议在输入端并联高频旁路(如0.1µF 陶瓷)与较大容量电解/固态电容(例如 10µF 以上);输出端同样配置低 ESR 电容可提升瞬态响应与稳定性,具体数值请依数据手册确认。
  • 功耗与散热:线性稳压器的功耗为 PD = (Vin - Vout) × Iout。在高差压或大电流工作时,器件会产生显著热量,必须保证合理散热(散热片或良好 PCB 散热铺铜),否则热关断会触发并限制输出。
  • 保护行为:短路保护在输出短路或重载时限制电流,避免器件与负载损坏;热关断在结温超限时关闭输出,待温度下降后自动恢复。以上保护为典型安全措施,但并非长期替代正确的热设计与限流方案。
  • 工作环境:器件的额定工作温度为 0℃ 至 +125℃,适合工业级多数应用,但在极端低温或高温场合请结合系统热设计与寿命评估。

四、典型应用场景

  • 双轨电源系统中负电源生成(仪表放大、运放偏置)
  • 通信设备与网络终端的负轨供电
  • 工业控制与测试测量设备的稳压负供电
  • 模拟电路、数据采集前端的 -12V 参考与驱动

五、选型与使用建议

  • 上电顺序:在多轨电源系统中注意正负电源的上电顺序与回路接地,避免因电位异常导致器件承受过压。
  • 检查封装与热阻:由于封装未知,选型时务必获取数据手册确认引脚、封装热阻(θJA、θJC)与最大结温,以设计合适散热方案。
  • 替代与兼容:若需替换或并联使用,请参考电压精度、温漂、短路特性与封装引脚兼容性,避免直接替换导致系统不稳定。

总结:LM7912CT 为一款面向工业与通用电子场景的 -12V、1.5A 线性稳压器,具备必要的保护功能与适用的工作温度范围。使用时请结合具体电路的输入电压范围、散热条件与负载特性,参考华冠官方数据手册以获得完整电气特性与应用电路。

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