WMSIC Electronic Components

TWGMC TL431 Voltage Reference TL431

ModelTL431
PackageSOT-23
BrandTWGMC
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 Electronic Component

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TWGMC TL431
Type
TWGMC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TWGMC
Electronic Component
TL431
Electronic Component
1
Package
SOT-23
Electronic Component
Voltage Reference IC
Electronic Component
±1%
Electronic Component
0.031g
Electronic Component
1
Features
Electronic Component
Electronic Component
BM0259511625
Operating Temperature
25℃~+85℃
Electronic Component
50ppm/℃
Output Voltage
2.5V~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.

TL431 是一种广泛使用的可编程精度基准电压源,常被称为“可调的 Zener 二极管”。它主要应用于电源管理和控制电路中,因其高精度和可靠性而备受青睐。以下是该产品的详细概述。

一、产品概述

1. 基本特性

TL431的核心功能是提供一个可调的参考电压(通常为1.25V),这使得它在需要精确电压参考的多个应用中非常有用。TL431具有内部电压参考,可通过外部电阻网络来调节输出电压,范围可在1.25V至36V之间。

2. 封装和引脚配置

TL431通常以SOT-23封装形式提供,这一小型封装适合用于空间有限的应用中。SOT-23封装通常有三个引脚, 包括:

  • 引脚1 (REF): 参考电压引脚
  • 引脚2 (K): 共阴极接地引脚
  • 引脚3 (A): 可调输出引脚,通常接负载或输入电压

这种简单的引脚配置使得TL431容易集成到各种电路设计中。

二、主要特性

  1. 高精度: TL431具有±1%至±2%的电压参考精度,适合对电压要求严格的电路设计。

  2. 宽工作电压范围: 它支持2.5V至36V的输入电压范围,可以在多个电源电压条件下正常工作。

  3. 低温漂移: TL431的温度系数较低,即使在温度变化的环境中,也能保持其电压参考值的稳定性应对温度变化通常在50ppm/°C范围。

  4. 快速响应时间: TL431具有较快的响应时间,适合于快速变化负载的应用场景。

  5. 可调输出: 通过外部电阻,可轻松地对输出电压进行调节,对应不同的电路要求。

三、应用领域

TL431广泛应用于以下领域:

  1. 开关电源: 在开关电源设计中,TL431常用作反馈电压传感器,以实现稳压和过压保护。

  2. 线性电源: TL431也被用于线性电源中,以保持电压的稳定,避免负载波动造成的影响。

  3. 精密测量设备: 由于其高精度特性,TL431在精密测量和测试设备中也有良好的应用。

  4. LED驱动器: 在LED照明驱动电路中,TL431可以用于电流的精确控制,确保LED的稳定运行。

  5. 电池充电器: 在智能电池充电器中,TL431能够提供可靠的参考电压,以实现对充电状态的精确控制。

四、优缺点

优点

  • 高精度和稳定性: 在动态负载变化的情况下,TL431依然能够保持良好的性能。
  • 易于使用: 简单的外部调节和广泛的兼容性使得工程师在设计过程中使用TL431变得更为方便。
  • 成本效益: 相较于其他高精度电压参考组件,TL431的性价比非常高,适合大规模生产使用。

缺点

  • 需要外部元件: 设置和调节所需的外部电阻可能会增加设计的复杂度。
  • 在某些高频应用中表现不佳: 在快速开关或者高频不稳定的电源情况下,TL431的响应可能较慢。

五、结论

TL431是一款功能强大且 versatile (多种用途的) 的组件,广泛应用于各种电源管理方案中。无论是在开关电源、线性电源还是其它相关的电子产品中,TL431都可以提供可靠的电压参考和调节功能。凭借其高性能、易用性和良好的成本效益,TL431是许多产品设计师的首选组件之一。

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