WMSIC Electronic Components

MICROCHIP LM4041CYM3-1.2-TR LM4041CYM3

ModelLM4041CYM3-1.2-TR
PackageSOT-23
BrandMICROCHIP
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
MICROCHIP LM4041CYM3-1.2-TR
Type
MICROCHIP
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MICROCHIP
Electronic Component
LM4041CYM3-1.2-TR
Electronic Component
1
Package
SOT-23
Electronic Component
Voltage Reference IC
Electronic Component
±0.5%
Electronic Component
0.033g
Electronic Component
1
Electronic Component
BM0264755833
Operating Temperature
40℃~+85℃
Electronic Component
100ppm/℃
Output Voltage
1.225V
Output Current
12mA
Output Type
Electronic Component
(10Hz-10kHz)
20uVrms

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

LM4041CYM3-1.2-TR 产品概述

一、产品简介

LM4041CYM3-1.2-TR 是 MICROCHIP(美国微芯)提供的一款固定输出并联(分流)电压基准芯片,输出电压为 1.225V,面向对精度、稳定性和封装尺寸有严格要求的应用。该器件以 SOT-23 小封装提供良好的板上空间利用率,适合便携式、低功耗以及空间受限的工业和消费电子产品中作为精密参考源使用。

二、主要电气参数

  • 输出类型:固定(并联/分流参考)
  • 输出电压:1.225 V(典型)
  • 输出电流(最大可用驱动能力):12 mA
  • 精度(初始精度):±0.5%
  • 温度系数:100 ppm/℃
  • 最小可调节阴极电流(保持稳压的最小电流):约 45 µA
  • 噪声(10 Hz–10 kHz):约 20 µVrms
  • 工作温度范围:-40 ℃ ~ +85 ℃
  • 封装:SOT-23(贴片)
  • 品牌:MICROCHIP(美国微芯)
  • 订购信息:LM4041CYM3-1.2-TR(常见为卷带供货,便于 SMT 贴片生产线使用)

三、特性与优势

  • 高精度:±0.5% 的初始精度满足多数模数转换、比较参考及精密测量场合对基准电压的一致性要求。
  • 低温漂:100 ppm/℃ 的温度系数有利于在宽温区间内维持良好电压稳定性。
  • 低噪声:10 Hz–10 kHz 频段噪声仅约 20 µVrms,适合对噪声敏感的 ADC、放大器参考源。
  • 宽工作电流范围:从微安级最低保持电流(约 45 µA)到 12 mA 的驱动能力,支持从低功耗监测到中等负载的多种应用。
  • 小型封装:SOT-23 封装利于 PCB 布局及大批量生产,-TR 卷带包装便于自动化装配。

四、典型应用

  • 精密 ADC 参考电压
  • 微控制器和数据采集模块的基准源
  • 电池管理与电压监测电路
  • 精密比较器参考
  • 小型低功耗仪器与传感器接口

五、设计注意事项与实用建议

  • 工作电流选择:为保证基准稳定,阴极电流应高于最小调节电流(≥45 µA)。若需低噪声和更好瞬态性能,建议工作电流选在几百微安至数毫安范围;如需为外部负载供电并保持稳定,需确保总电流(基准工作电流 + 负载电流)不超过 12 mA。
  • 输入限流电阻:在将器件并联到电源时,通过限流电阻 R 可设定阴极电流。近似计算公式:R = (Vin - Vref) / Iset(其中 Iset 包括基准工作电流与负载电流)。设计时请留有裕量并考虑电源最小电压和最大工作电流。
  • 去耦与布板:为降低噪声并提升瞬态响应,可在基准输出与地之间放置小型陶瓷去耦电容(如 0.01µF–0.1µF),并将去耦电容靠近器件引脚放置。SOT-23 周围应保证良好的地回流路径,避免热源靠近基准以减小温漂影响。
  • 热管理:虽然器件功耗通常较小,但在高输入电压与较大阴极电流下功耗会上升,应注意 PCB 散热和环境温度,避免长期超额功耗影响稳定性和寿命。
  • 可靠性与包装:-TR 表示卷带(tape-and-reel)包装,适合 SMT 贴片线自动化生产;在存储与焊接时请遵循厂商的湿度和回流焊工艺推荐。

六、总结

LM4041CYM3-1.2-TR 是一款性能均衡的固定 1.225V 并联电压基准,凭借 ±0.5% 的高精度、低噪声和较宽的工作电流范围,适合广泛的精密参考和测量应用。其 SOT-23 小封装和卷带供货方式也方便生产组装。设计时需关注基准工作电流、输入限流和去耦布板,以确保在目标应用中获得最佳的稳定性和噪声性能。若需更详细的电气特性曲线、引脚定义或典型应用电路,请参考 MICROCHIP 官方数据手册或咨询器件供应商。

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