WMSIC Electronic Components

HTC LM2940S-5.0

ModelLM2940S-5.0
PackageSOT-223-3L
BrandHTC
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
HTC LM2940S-5.0
Type
HTC
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
630mV@(1A)
Electronic Component
HTC
Electronic Component
LM2940S-5.0
Electronic Component
1
Package
SOT-223-3L
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.178g
Electronic Component
1
Features
Voltage
Electronic Component
BM0257640913
Operating Temperature
40℃~+85℃@(Tj)
Operating Voltage
26V
Output
Electronic Component
Output Voltage
5V
Output Current
1A

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

LM2940S-5.0 产品概述

一、产品简介

LM2940S-5.0 是一款高性能的线性稳压器,旨在提供稳定、低噪声的电源输出,广泛应用于消费电子、汽车电子和工业设备等领域。LM2940S-5.0 的最大输出电流为1A,输出电压为5V,具有良好的负载和线路调整率,使其成为多种需要稳定电源的场合下的理想选择。

二、关键特性

  1. 低掉落电压:LM2940S-5.0 的最大掉落电压为0.5V,在最大负载下(1A),这使得其在典型的5V输出条件下具有更高的效率,尤其是在输入电压接近5V的场合。

  2. 内部短路保护:集成的短路保护功能可以有效防止在输出短路情况下对设备造成的损害,从而提高系统的可靠性。

  3. 过热保护:当芯片的温度超过设定阈值时,内部会自动降低输出功率,从而避免热损伤。

  4. 低纹波电压:LM2940S-5.0 提供极低的输出纹波电压,确保了电力的干净输出,适用于要求苛刻的音频及精密设备应用。

  5. 快速瞬态响应:该器件具有良好的瞬态响应性能,可以快速应对负载变化。在负载或输入电压迅速变化时,LM2940S-5.0 能够保持输出电压的稳定性。

  6. 宽工作温度范围:产品的工作温度范围为-40℃至+125℃,可以满足不同环境下的可靠性需求。

三、用途

LM2940S-5.0 被广泛应用于以下领域:

  1. 便携式设备:如移动电话、数码相机及专业音频设备,附加的电源管理功能能够保证设备在多种操作条件下正常工作。

  2. 汽车电子:启用在汽车中为各种电子控制单元提供5V的稳定供电,尤其是导航仪、音频系统和车载信息娱乐系统。

  3. 工业控制设备:在PLC、传感器及工业控制器中为逻辑电路和控制信号提供必要的稳定电源。

  4. 计算机周边设备:如打印机、网络设备及其它外设确保其正常运作需要的5V供电。

四、封装信息

LM2940S-5.0 的封装形式为 SOT-223-3L,具有良好的散热性能和适当的尺寸,便于在小型化设计中使用。SOT-223 封装的设计使得安装过程简单易行,且在PCB布局中占用的空间较小,尤其适合要求较严格的设计中。

五、示例应用电路

在设计使用 LM2940S-5.0 的电路时,通常会使用额外的输入和输出电容器,以确保输出的稳定性和快速响应能力。以下是一个典型的应用电路结构:

  • 一个输入电容器(Ceramic Capacitor) 连接在输入引脚和地之间,以过滤输入电源中的噪声。
  • 一个输出电容器(通常也是陶瓷电容)连接在输出引脚和地之间,以降低纹波,同时提高稳定性。
  • 可在输入端加装一个小的电感或阻容滤波器,以进一步抑制高频噪声。

六、结论

LM2940S-5.0 是一款经济实用的线性稳压器,其卓越的性能和高可靠性使其成为市场上备受青睐的产品。因其在音频、汽车电子及工业控制等应用中的出色表现,LM2940S-5.0 的需求持续增长。结合其简洁的设计和良好的保护特性,LM2940S-5.0 将继续为多种电子产品提供优质的电源解决方案。

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