WMSIC Electronic Components

LRC S-LTL431AKLT1G

ModelS-LTL431AKLT1G
PackageSOT-23
BrandLRC
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
LRC S-LTL431AKLT1G
Type
LRC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LRC
Electronic Component
S-LTL431AKLT1G
Electronic Component
1
Package
SOT-23
Electronic Component
Voltage Reference IC
Electronic Component
±0.5%
Electronic Component
0.031g
Electronic Component
1
Electronic Component
BM0264999484
Operating Temperature
40℃~+125℃
Operating Voltage
2.488V~36V
Electronic Component
25ppm/℃
Output Voltage
2.488V~36V
Output Current
100mA
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.

S-LTL431AKLT1G 可调并联基准电压源产品概述

S-LTL431AKLT1G是乐山无线电(LRC)推出的一款高精度可调并联基准电压源,属于LTL431系列的小型化封装型号。该器件凭借宽电压范围、高稳定度及紧凑封装,成为替代传统稳压管的理想选择,广泛适配消费电子、工业控制、汽车电子等多领域的电压基准与稳压应用需求。

一、产品核心定位与价值

作为并联基准器件,S-LTL431AKLT1G的核心价值在于精度与灵活性的平衡:相比普通稳压管(如1N47系列),其初始精度提升至±0.5%,温度漂移降低至25ppm/℃,能在宽温度范围内保持稳定输出;同时支持2.488V~36V的宽电压调节,可通过外接电阻灵活设置输出电压,无需更换不同型号稳压管,大幅简化电路设计与物料管理。

二、关键电气参数深度解析

1. 宽电压覆盖范围

该器件的工作电压与输出电压均兼容2.488V~36V:最低覆盖其内部基准电压(2.488V为典型稳定基准值),最高可支持36V高压应用,满足从低功耗消费电子到工业高压设备的不同电压需求。

2. 高精度与低温度漂移

  • 初始精度:±0.5%(相对于2.488V基准),确保常温下输出电压的一致性,无需额外校准即可满足多数应用要求;
  • 温度系数:25ppm/℃(典型值),意味着温度每变化1℃,输出电压漂移仅约62μV,远优于普通稳压管(通常>100ppm/℃),适合极端温度环境下的稳定工作。

3. 电流特性与负载适应性

  • 最大输出电流:100mA,可直接驱动小功率负载(如LED、传感器等),无需额外功率管扩展;
  • 最小阴极电流:300μA,确保即使在轻负载(如几mA负载)下,器件仍能保持并联稳压的正常工作状态,避免输出失控。

三、封装与环境适应性

1. 紧凑SOT-23封装

采用SOT-23表面贴装封装,尺寸约为1.6mm×2.9mm×1.1mm,体积小、重量轻,适合智能手机充电器、便携式设备等对空间要求严格的产品,同时兼容自动化贴片生产,降低制造成本。

2. 宽温度工作范围

支持**-40℃~+125℃的工业级温度范围**,可在户外设备、汽车电子(如车载充电器)、工业控制器等极端环境下稳定运行,无需额外散热或温度补偿电路。

四、典型应用场景

1. 开关电源反馈基准

在AC-DC或DC-DC转换器中,作为电压反馈回路的基准源,配合光耦或运放稳定输出电压,例如手机快速充电器、笔记本电源适配器的稳压控制。

2. 可调稳压电路

通过外接两个分压电阻(R1、R2),可设置输出电压Vout=2.488V×(1+R1/R2),组成简单的可调稳压源,替代线性稳压器(如LM317)在小电流、低成本场景(如LED驱动电源、电池充电模块)。

3. 电压监测与保护

结合运算放大器组成过压/欠压检测电路,例如工业设备的电源电压监控、电池过充保护,当输出电压偏离设定值时触发报警或切断电路。

4. 电池充电控制

作为锂电池充电电压的基准参考(如4.2V锂电池充电截止电压),确保充电电压稳定在安全范围内,提升电池寿命。

五、选型与使用注意事项

  1. 电压匹配:输入电压(工作电压)需低于36V,输出电压设置需高于2.488V且不超过36V;
  2. 负载电流限制:最大负载电流不超过100mA,若负载电流较大,需外接功率管扩展;
  3. 阴极电流保障:设计电路时需确保阴极电流≥300μA(可通过外接下拉电阻调整),避免轻负载下输出不稳定;
  4. 焊接工艺:SOT-23封装焊接温度需控制在260℃以内(回流焊),焊接时间不超过10秒,防止器件损坏;
  5. 品牌可靠性:LRC作为国内老牌半导体厂商,该器件经过批量可靠性测试,适合工业级与消费级产品的批量应用。

综上,S-LTL431AKLT1G凭借高精度、宽电压、紧凑封装及宽温特性,成为多领域电压基准与稳压应用的高性价比选择,可有效替代传统稳压管,简化电路设计并提升系统稳定性。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

Product sourcing intelligence

Model, package, availability, and BOM fit reviewed before quotation.

WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

Sourcing availability signal

Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.

Buyer sourcing scenarios

Examples of how common component sourcing requests are organized.

Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.

The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.