WMSIC Electronic Components

JUXING 78L05

Model78L05
PackageSOT-89
BrandJUXING
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 26+

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Technical data

Product details

19 specifications

Core information

Product name
JUXING 78L05
Type
JUXING
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
1.7V
Electronic Component
JUXING
Electronic Component
42uV
Electronic Component
78L05
Electronic Component
1
Package
SOT-89
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.12g
Electronic Component
1
Electronic Component
BM0265601753
Operating Temperature
0℃~+150℃@(Tj)
Operating Voltage
20V
Output
Electronic Component
Output Voltage
5V
Output Current
100mA

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

JUXING 78L05线性稳压器(LDO)产品概述

一、产品定位与核心功能

JUXING(钜兴)78L05是一款固定输出5V的低压差线性稳压器(LDO),属于经典78L系列的小电流版本,专为低功耗、对噪声敏感的电子电路设计。该器件无需外部调整元件即可实现稳定的5V输出,具备宽工作温度范围、低噪声等特点,适用于多种工业、消费电子及传感类应用场景。

二、核心电气参数详解

78L05的核心电气性能可满足多数低功耗电路的供电需求,关键参数如下:

  • 输入输出规格:额定工作电压(输入)为20V,固定输出电压5V(无外部调整时精度稳定),最大输出电流100mA,支持单通道正极输出;
  • 静态与动态性能:典型静态电流(Iq)为6mA,电源纹波抑制比(PSRR)达49dB@120Hz(有效抑制电源纹波对负载的干扰),压差(输入输出最小电压差)为1.7V(即输入电压需≥6.7V时可稳定输出5V),输出噪声典型值42uV(远低于普通线性稳压器,适合噪声敏感场景);
  • 输出特性:固定输出无需外接电阻调整,电路设计简化,负载变化时输出电压稳定性好。

三、封装与工作环境

  • 封装形式:采用SOT-89贴片封装,体积小巧(3脚设计:输入IN、输出OUT、地GND),适合小型化PCB设计,便于集成到紧凑的电子模块中;
  • 工作温度范围:结温(Tj)覆盖0℃~+150℃,可适应工业现场、车载等温度变化较大的恶劣环境(实际应用需结合散热条件控制环境温度,避免结温超限)。

四、典型应用场景

78L05凭借低噪声、宽温、小体积的优势,广泛应用于以下场景:

  1. 低功耗传感模块:如温度传感器、压力传感器的信号调理电路,为MCU或放大器提供稳定5V供电;
  2. 音频前置电路:低噪声42uV特性可避免电源噪声对音频信号的干扰,提升音质;
  3. 工业控制子系统:宽结温范围适配工业现场的高温环境,用于小型PLC、远程IO模块的辅助供电;
  4. 便携电子设备:小体积SOT-89封装适合智能手环、蓝牙模块等便携设备的电源转换(需注意负载电流≤100mA)。

五、关键性能优势

对比同类小电流LDO,78L05具备以下核心优势:

  • 低噪声输出:42uV典型噪声值,优于多数普通线性稳压器,适合对噪声敏感的精密电路;
  • 宽温适应性:结温0~150℃,满足工业级应用的温度要求;
  • 设计简化:固定输出无需调整元件,仅需少量滤波电容即可稳定工作;
  • 纹波抑制能力:49dB@120Hz的PSRR,有效过滤电源中的纹波干扰,提升负载电路的稳定性;
  • 小体积集成:SOT-89封装节省PCB空间,适合高密度电路设计。

六、使用注意事项

为保证器件稳定工作,需注意以下要点:

  1. 输入电压限制:输入电压需≤20V(额定值),避免过压损坏;
  2. 压差要求:输入电压需比输出电压高至少1.7V(如输出5V时,输入需≥6.7V),否则输出电压会随输入电压下降而波动;
  3. 散热设计:结温150℃为极限值,实际应用中需保证器件散热(如PCB上增加铜箔面积),避免结温过高导致性能下降或损坏;
  4. 滤波电容配置:建议在输入端并联1μF陶瓷电容,输出端并联1μF陶瓷电容,提升电路稳定性与噪声抑制效果;
  5. 负载电流限制:最大输出电流100mA,避免过载(如负载电流超过100mA,需更换更高电流的LDO)。

该器件通过平衡性能与成本,成为低功耗5V供电场景的实用选择,可快速集成到各类电子系统中。

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