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HGSEMI LM7809CT
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HGSEMI LM7809CT
- Type
- HGSEMI
- Minimum package
- 1000 盒
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HGSEMI
- Electronic Component
- 58uV
- Electronic Component
- LM7809CT
- Electronic Component
- 1
- Package
- TO-220-3
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 2.725g
- Electronic Component
- 1
- Electronic Component
- BM0229934260
- Operating Temperature
- 0℃~+125℃@(Ta)
- Operating Voltage
- 35V
- Output
- Electronic Component
- Output Voltage
- 9V
- Output Current
- 1.5A
- Output Type
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LM7809CT（HGSEMI 华冠）产品概述
一、产品简介
LM7809CT 为固定输出型线性稳压器，输出电压稳定为 9V，输出电流可达 1.5A，外包装为常见的 TO-220-3 管脚封装。器件集成短路保护与过热保护，具有可靠的工作安全特性，适用于对稳压精度和可靠性有要求的低功耗电源场合。
二、主要电气参数
- 工作电压（最高）：35V（器件最高允许输入电压，实际设计须留裕度）
- 输出电压：9V（固定）
- 输出电流：1.5A（最大连续输出电流）
- 电源纹波抑制比（PSRR）：56dB @ 120Hz，良好抑制来自整流滤波的交流纹波
- 噪声：58µV（典型，适合对噪声敏感的模拟/音频前端）
- 工作温度范围：0℃ ~ +125℃（Ta）
- 输出极性：正极；输出通道数：1
三、典型应用与优点
适用于工业控制模块、小型电源模块、嵌入式电路和音频前端等需要稳定 9V 电源的场景。PSRR 和低噪声特性使其在模拟信号链中表现良好；内置短路与过热保护提高系统可靠性，便于工程应用中减少额外保护电路。
四、使用建议与注意事项
- 输入电压应高于输出电压并留足压差（典型稳压器在负载下需约 2V 左右压差），建议输入电压大于 11V 并低于器件最高额定 35V。
- 功耗与散热：功耗约为 (Vin − 9V) × Iout，工作在高 Vin 或大电流时需配备合适散热器或机箱散热。
- 旁路电容：推荐在输入端并联 0.33µF 陶瓷电容并接 10µF 电解电容，输出端近端并联 0.1µF 陶瓷与 10µF 电解以保证稳定性和瞬态响应。
- 虽有保护电路，但应避免长期短路或超额功耗运行，设计时应考虑热量和可靠性余量。
五、封装与品牌
封装：TO-220-3，便于安装散热片与通用电路板布局。
品牌：HGSEMI（华冠），适合对成本与可靠性有平衡需求的工程应用。
总结：LM7809CT 是一款结构简单、使用方便且保护完善的 9V 线性稳压器，适合广泛的通用和工业级电源设计。
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