WMSIC Electronic Components

XBLW L78M05HDTR

ModelL78M05HDTR(XBLW)
PackageTO-252
BrandXBLW
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+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
XBLW L78M05HDTR(XBLW)
Type
XBLW
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
2V@(250mA)
Electronic Component
XBLW
Electronic Component
40uV
Electronic Component
L78M05HDTR(XBLW)
Electronic Component
1
Package
TO-252
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.494g
Electronic Component
1
Electronic Component
BM0265583724
Operating Temperature
0℃~+125℃@(Tj)
Operating Voltage
40V
Output
Electronic Component
Output Voltage
5V
Output Current
700mA

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

L78M05HDTR(XBLW)线性稳压器产品概述

一、产品定位与核心价值

L78M05HDTR是芯伯乐(XBLW)推出的固定5V单路线性稳压器,针对中功率稳压场景设计,兼顾稳定性、可靠性与成本控制。产品核心功能是将波动的输入电压精准稳压至5V输出,同时集成短路、过热保护机制,适配工业、车载、消费电子等多领域的供电需求,是替代传统插件稳压器的高性价比方案。

二、关键电气参数深度解析

产品参数围绕“稳压精度、抗干扰、可靠性”三大核心设计,具体解读如下:

1. 电压与电流基础参数

  • 输入工作电压:最大40V,兼容12V/24V系统(如车载、工业)及部分高压辅助电源;最小输入电压需结合压差计算(如输出250mA时,输入≥5V+2V=7V)。
  • 输出电压:固定5V,无需外部电阻调节,简化电路设计,避免额外元件引入的误差。
  • 输出电流:最大700mA,覆盖多数中功率负载(如传感器模块、小型MCU、LED驱动辅助电源)。
  • 压差:2V(@250mA),线性稳压器的压差随输出电流增大略有上升,但整体处于行业合理水平,平衡输入电压与输出能力。

2. 抗干扰与噪声性能

  • 电源纹波抑制比(PSRR):80dB@120Hz,对市电整流后的低频纹波(100/120Hz)抑制效果显著——若输入纹波为1V,输出纹波仅约100uV,大幅降低对敏感电路的干扰。
  • 输出噪声:40uV(典型值),远低于普通线性稳压器的噪声水平,适合音频、传感器信号调理等对噪声敏感的模拟电路。

3. 可靠性与功耗设计

  • 静态电流(Iq):6mA,自身功耗低,对系统总功耗影响极小,适合电池供电或低功耗场景(如便携式设备辅助电源)。
  • 保护特性:集成短路保护(输出短路时自动限流/关断)与过热保护(结温超阈值时关断,温度下降后自动恢复),无需额外设计保护电路,提升系统抗故障能力。
  • 工作温度范围:结温0℃+125℃,覆盖工业级环境(-40℃+85℃通常为工业级,此产品更宽),可稳定工作于高温车间、低温户外等场景。

三、封装与机械特性

产品采用TO-252封装(3引脚贴片封装),具备以下优势:

  • 尺寸小巧:引脚间距与封装面积适配自动化贴装,节省PCB空间(约6.1mm×5.0mm),适合高密度电路设计;
  • 散热能力:比TO-92插件封装散热面积大,支持700mA中功率输出(需结合实际功耗设计辅助散热);
  • 引脚定义清晰:标准“输入(V_in)-地(GND)-输出(V_out)”布局,便于电路布局与焊接。

四、典型应用场景

L78M05HDTR的参数特性使其适配多领域供电需求:

  1. 工业控制:宽温范围适配PLC、温度传感器模块、电机驱动辅助电源;
  2. 车载电子:40V输入兼容12V/24V车载系统,短路/过热保护满足车载可靠性要求(如车载显示屏、胎压监测辅助电源);
  3. 消费电子:低噪声、高纹波抑制适合机顶盒、路由器的5V辅助电源(如WiFi模块、指示灯供电);
  4. 模拟信号处理:40uV低噪声用于音频放大器、压力传感器信号调理电路;
  5. 通信设备:80dB PSRR抑制电源纹波,适配4G/5G小基站、光模块辅助电源。

五、应用设计注意事项

为确保稳定工作,需注意以下细节:

  1. 输入电压范围:避免输入电压低于“V_out+最大压差”(如输出700mA时,输入需≥8V左右),防止稳压失效;
  2. 散热设计:若功耗超过TO-252自然散热能力(如V_in=12V、I_out=700mA时,功耗=4.9W),需在焊盘下增加大面积铜箔或贴小型散热片;
  3. 滤波电容:输入端并联0.1uF陶瓷电容(靠近引脚),输出端并联1uF陶瓷电容,抑制高频纹波与噪声;
  4. 保护功能触发:短路保护为“自恢复型”,过热保护需待结温降至100℃以下后自动恢复,无需手动重置。

六、产品优势总结

L78M05HDTR(XBLW)以“高性价比、宽适配、高可靠性”为核心优势:

  • 无需外部元件即可实现固定5V稳压,设计简单,降低研发成本;
  • 宽温、高PSRR、低噪声覆盖多场景需求,减少方案选型复杂度;
  • 集成双保护机制,降低系统故障风险,提升产品寿命;
  • TO-252封装便于集成,适合批量生产,提高生产效率。

该产品是中功率5V稳压场景的优选方案,可有效提升电路稳定性与可靠性。

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