WMSIC Electronic Components

WILLSEMI WL2801E28-5/TR WL2801E28

ModelWL2801E28-5/TR
PackageSOT-23-5L
BrandWILLSEMI
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 21+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
WILLSEMI WL2801E28-5 / TR
Type
WILLSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
170mV@(200mA)
Electronic Component
WILLSEMI
Electronic Component
100uVrms
Electronic Component
WL2801E28-5/TR
Electronic Component
1
Package
SOT-23-5L
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.04g
Electronic Component
1
Electronic Component
BM0005117929
Operating Temperature
40℃~+85℃@(Ta)
Operating Voltage
5.5V
Output
Electronic Component
Output Voltage
2.8V
Output Current
300mA

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

WL2801E28-5/TR — WILLSEMI(韦尔)线性稳压器产品概述

一、产品简介

WL2801E28-5/TR 是一款固定输出、正极 2.8V 的低压差线性稳压器(LDO),采用 SOT-23-5L 封装,面向对噪声、供电稳定性和功耗有较高要求的便携与嵌入式应用。器件内置使能(EN)引脚以及多重保护机制,便于系统电源管理与故障防护。

二、主要特性

  • 固定输出电压:2.8V(正极输出)
  • 工作电压:最高 5.5V(输入端)
  • 输出电流:最大 300mA,适合为中等负载供电
  • 静态电流(Iq):典型 70μA,适用于低功耗系统
  • 压差(Dropout):170mV @ 200mA,低压差利于电池或低压输入场景
  • PSRR:75dB @ 217Hz,对低频纹波具有良好抑制能力
  • 输出噪声:100μVrms,适合对噪声敏感的模拟前端和参考电源
  • 保护功能:过流保护、短路保护、热关断等,提升系统可靠性
  • 带使能功能:通过 EN 引脚实现输出开/关控制
  • 封装/包装:SOT-23-5L,TR 表示带卷盘(Tape & Reel)供应,便于自动贴片生产

三、性能亮点与应用场景

凭借低静态电流与较低压差,WL2801E28-5/TR 非常适合电池供电和节能型终端。高 PSRR 与低噪声特性使其适用于射频前端、传感器供电、ADC/DAC 参考源以及便携式音频设备。内置保护机制有助于在短路或过载时保护器件与负载,适合 IoT 节点、可穿戴设备、工业控制模块等场景。

四、封装与热管理

SOT-23-5L 小巧,适合空间受限设计。实际允许的输出功耗受 PCB 散热能力影响:建议在布局中为输入/输出及地引脚提供充足铜箔散热面积或热沉,避免长时间大电流输出时器件进入热限流从而降额。

五、参考布局与使用注意

  • 输出与输入侧均建议并联低 ESR 陶瓷电容(例如 1µF–10µF),并尽量靠近器件引脚,减少回流环路面积;具体电容值和 ESR 参照器件应用手册以保证稳定性。
  • EN 引脚用于使能控制,接高电平使能输出、接低电平关闭,可实现电源管理与待机节能。
  • 布局时将大面积接地铜箔放在器件底部及其周围,必要时使用多层板的接地平面提升散热与电磁兼容性能。
  • 在高噪声或高精度应用中,可在输出端加入小 RC 滤波网络以进一步降低瞬态噪声,但需注意可能对稳压器稳定性的影响。

六、订购与支持

WL2801E28-5/TR 为 WILLSEMI(韦尔)品牌型号,后缀 TR 表示卷带包装,适合 SMT 贴片生产线。选型时建议参考最新版器件数据手册获取完整电气特性、典型应用电路、封装尺寸及推荐外部组件值,以确保在目标应用中的可靠性与性能。若需更高输出电流或不同输出电压版本,可咨询供应商或查看同系列其他型号。

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