WMSIC Electronic Components

worldsemi WS4054

ModelWS4054
PackageSOT-23-5L
BrandWORLDSEMI
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 23+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
worldsemi WS4054
Type
WORLDSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WORLDSEMI
Electronic Component
WS4054
Electronic Component
1
Package
SOT-23-5L
Electronic Component
Battery Management
Electronic Component
0.041g
Electronic Component
1
Features
Programmable Current
Electronic Component
BM0264717371
Operating Temperature
40℃~+85℃
Operating Voltage
4.25V~6.5V
Battery Type
Battery
Battery
1
ICType
IC
0VBattery
Electronic Component

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

WS4054 产品概述

一、概述

WS4054 是一款适用于单节锂离子/锂聚合物电池的线性充电管理芯片,封装为 SOT-23-5。芯片面向 USB 及 5V 左右的电源供给场景设计,集恒流-恒压(CC/CV)充电、涓流预充、充电终止与自动再充电等功能于一体,支持可编程充电电流,最大可达 535mA(典型常用设计为 500mA)。器件无需外置功率 MOSFET、独立采样电阻或阻塞二极管,适合手机、PAD、MP3、蓝牙耳机等便携式产品的电源管理。

二、主要特性

  • 工作电压:4.25V ~ 6.5V(适配 USB 5V 供电)
  • 充电终止电压:4.25V(饱和/截止电压)
  • 最大充电电流:535mA(可编程)
  • 支持模式:恒流充电、恒压充电、涓流预充、自动再充电、充电终止、欠压锁定
  • 低静态电流:Iq ≈ 50μA(待机功耗低)
  • 不支持电池温度检测与 0V 唤醒充电
  • 工作温度范围:-40℃ ~ +85℃
  • 封装:SOT-23-5,品牌:Worldsemi

三、典型应用场景

适用于基于 USB 供电的单节锂电池设备,包括智能手机副设备、平板前端模块、便携媒体播放器、蓝牙音频设备、可穿戴终端与小型充电盒等。

四、封装与引脚(概述)

SOT-23-5 小封装,简化系统布局。典型外部器件需求极少:输入去耦电容、电池连接与一个用于设定充电电流的编程电阻(Rprog),以及指示 LED(可选)。无需外置功率 MOSFET、阻塞二极管或大功率采样电阻,利于节省 PCB 空间与 BOM 成本。

五、设计注意事项

  • 编程充电电流需按芯片数据表选择合适 Rprog,结合 USB 电流限制与系统散热能力;尽量在 500mA 左右做典型设计以保证兼容大多数 USB 端口。
  • 由于不支持 0V 电池充电,若存在深度放电电池需外部唤醒或手动保护电路处理。
  • 无电池温度监测功能时,应在系统层面考虑温度保护策略,防止极端环境下充电异常。
  • 线性充电方案在高电流条件下会产生热量,需保证器件工作环境良好散热或限制充电电流以控制结温。
  • 输入侧建议加入适当的滤波与浪涌抑制,确保 USB 插拔或电源波动不会影响充电过程。

六、优势与结论

WS4054 以极简外设、低待机功耗和对 USB 场景友好的工作电压为主要优势,适合对 PCB 面积和成本敏感的便携式产品。对于需要单节锂电池可靠充电管理且对 0V 充电和电池温度检测无刚性要求的应用,WS4054 是一个高集成度且实用的选择。具体选型与参数设定请参考器件完整数据手册和参考设计。

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.