WMSIC Electronic Components

XBLW LM337T

ModelLM337T(XBLW)
PackageTO-220
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 LM337T(XBLW)
Type
XBLW
Minimum package
50 管

Technical parameters

Electronic Component
Electronic Component
Electronic Component
XBLW
Electronic Component
LM337T(XBLW)
Electronic Component
1
Package
TO-220
Electronic Component
Linear Regulator(LDO)
Electronic Component
2.754g
Electronic Component
1
Electronic Component
BM0265609043
Operating Temperature
0℃~+125℃@(Tj)
Operating Voltage
40V
Output
Electronic Component
Output Voltage
1.25V~37V
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.

LM337T(芯伯乐XBLW)可调负电压线性稳压器产品概述

LM337T是芯伯乐(XBLW)推出的一款工业级可调负电压线性稳压器,专为需要稳定负电压输出的电路场景设计,兼具宽电压范围、大电流能力与多重保护特性,可广泛应用于工业控制、音频设备、汽车电子等领域。

一、产品定位与核心应用场景

作为负输出线性稳压器,LM337T解决了电路中“负电压供电”的刚需(如运放偏置、双电源系统的负轨部分)。其1.5A的最大输出电流、1.25V~37V的可调范围,覆盖了从精密小信号电路到中等功率负载的多数场景,典型应用包括:

  • 运放/比较器双电源偏置:搭配正输出稳压器(如LM317)组成±12V/±15V双电源,满足模拟电路的对称供电需求;
  • 音频功率放大器负偏置:给乙类/甲乙类功放提供负偏置,消除交越失真,提升音质;
  • 工业传感器供电:部分压力、温度传感器需要负电压激励,LM337T的稳定输出可保证传感器精度;
  • 车载电子系统:适应0℃~125℃的宽温环境,可用于车载导航、仪表的负电源模块。

二、关键电气性能参数

LM337T的核心参数针对性解决负电压设计的痛点,具体表现为:

  1. 宽电压/电流范围:输入电压(相对地)可支持至-40V,输出电压可调至-1.25V-37V(注:输出电压为负,数值范围1.25V37V指绝对值),最大输出电流1.5A,能驱动多数中小功率负载;
  2. 优异纹波抑制:电源纹波抑制比(PSRR)达77dB@120Hz(市电全波整流后的纹波频率),可有效过滤输入侧的市电纹波,输出纹波小,适合对电源纯净度要求高的精密电路;
  3. 灵活可调性:仅需外接2个电阻(分压器)即可实现输出电压调节,无需复杂控制电路,设计成本低、调试简单。

三、集成多重保护特性

为提升电路可靠性,LM337T集成了三大核心保护功能:

  1. 短路保护:输出端与地短路时,器件自动限制输出电流,避免因短路导致的过流烧毁,短路解除后可自动恢复正常工作;
  2. 过热保护:当结温超过125℃时,器件自动降额工作或关断输出,防止因环境高温(如工业现场、汽车发动机舱)或负载过载导致的过热损坏;
  3. 过流保护:输出电流超过1.5A额定值时,电流被限制在安全范围内(约1.8A左右),既保护负载不被过流损坏,也避免器件自身因过载失效。

四、封装与环境适应性

LM337T采用TO-220封装,这是一种成熟的功率封装形式:

  • 散热效率高:可直接焊接在PCB上,或搭配散热片进一步提升散热能力,适应1.5A大电流工作场景;
  • 安装方便:引脚间距符合标准,兼容多数PCB设计,便于批量生产;
  • 宽温工作:结温范围0℃125℃,符合工业级温度标准,可在-40℃85℃的环境温度下稳定工作(需控制结温不超上限)。

五、品牌与可靠性优势

芯伯乐(XBLW)作为国产元器件品牌,LM337T通过了严格的可靠性测试,参数一致性好,可直接替代进口同类产品(如TI、ON Semiconductor的LM337T),且性价比更高,适合中小批量至大规模生产需求。

综上,LM337T(XBLW)凭借宽电压范围、大电流能力、多重保护与工业级可靠性,成为负电压输出场景的高性价比选择,可满足多数工业、消费电子领域的设计需求。

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