WMSIC Electronic Components

XBLW L78M12HDTR

ModelL78M12HDTR(XBLW)
PackageTO-252-2
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
XBLW L78M12HDTR(XBLW)
Type
XBLW
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
2V@(250mA)
Electronic Component
XBLW
Electronic Component
75uV
Electronic Component
L78M12HDTR(XBLW)
Electronic Component
1
Package
TO-252-2
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.454g
Electronic Component
1
Electronic Component
BM0265609079
Operating Temperature
20℃~+125℃@(Tj)
Operating Voltage
27V
Output
Electronic Component
Output Voltage
12V
Output Current
700mA

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

L78M12HDTR(XBLW)线性稳压器产品概述

一、产品定位与核心功能

L78M12HDTR是芯伯乐(XBLW)推出的工业级固定12V输出线性稳压器,核心作用是将波动的直流输入电压转换为稳定、低噪声的12V直流输出,同时内置保护机制,适配对电源稳定性要求较高的场景。该器件兼容传统78M系列稳压器的逻辑,在纹波抑制、噪声控制上做了优化,适合替代普通78M12用于对电源质量严苛的应用(如模拟电路、传感器供电)。

二、关键参数深度解析

核心参数直接决定应用边界,关键指标如下:

  1. 输入输出特性:输出电压固定12V(工业级精度),最大输出电流700mA(满足中小功率负载);典型输入电压27V,输入范围建议14V~35V(需满足「输出+压差」的最小输入,即12V+2V=14V)。
  2. 纹波与噪声:PSRR达80dB@120Hz(有效抑制低频纹波),输出噪声仅75uV(远低于普通线性稳压器的100uV,适合噪声敏感电路)。
  3. 静态电流与压差:静态电流6mA(常规水平,不影响待机功耗);压差2V@250mA(输入需比输出高2V才能稳压,适配输入余量充足场景)。
  4. 温度可靠性:工作结温-20℃~+125℃,覆盖工业/车载环境(如户外设备、汽车电子)。

三、封装与引脚定义

采用TO-252-2封装(实际为3引脚DPAK表面贴装,简化标注),体积小巧(6.5mm×5.0mm),适配高密度PCB:

  • 引脚1:输入(IN)——接不稳定直流输入(如27V);
  • 引脚2:输出(OUT)——接12V负载;
  • 引脚3:地(GND)——接系统地。
    注:TO-252封装自带一定散热能力,大电流时可在引脚3贴铝制散热片。

四、典型应用场景

该器件适配以下场景:

  1. 工业控制:PLC辅助电源、温度/压力传感器供电(满足工业温湿度要求);
  2. 车载电子:车载音响、仪表盘、行车记录仪稳压(适配车载12V/24V系统);
  3. 通信设备:小型基站、路由器后级稳压(抑制噪声干扰信号传输);
  4. 医疗电子:体温计、血压计传感器供电(低噪声不影响测量精度);
  5. 消费电子:高端充电器、智能音箱电源模块(提升电压稳定性)。

五、保护特性与可靠性

内置两项核心保护,提升系统抗风险能力:

  1. 短路保护:输出短路时自动限流(最大1A),避免烧毁;短路解除后自动恢复。
  2. 过热保护:结温超150℃时关断输出,降至120℃左右自动重启,防止高温损坏。
    此外,抗静电能力(ESD)达HBM 2kV,适合复杂环境使用。

六、使用注意事项

确保稳定工作需注意:

  1. 滤波电容:输入/输出端各并联10uF电解电容+0.1uF陶瓷电容,滤除高低频纹波;
  2. 散热处理:输出电流接近700mA时,需贴散热片(如铝片),避免结温过高;
  3. 极性检查:输入正接引脚1、负接引脚3,反接可能损坏器件;
  4. 电压限制:输入电压不超35V(最大安全值),否则易烧毁。

七、选型对比参考

与ST L78M12对比,L78M12HDTR优势明显:

指标 L78M12HDTR(XBLW) ST L78M12 PSRR@120Hz 80dB 70dB 输出噪声 75uV 100uV 静态电流 6mA 5mA 工作结温范围 -20℃~+125℃ -40℃~+125℃

注:ST低温范围更广,但L78M12HDTR在纹波/噪声上更优,适合对电源质量要求高的场景。

该器件以高性价比、优化的纹波噪声特性,成为工业/车载等场景的实用稳压方案。

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