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WS4054 AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

WS4054 product

WS4054

Integrated Circuits (ICs)

Li-ion chargerLinear chargerSingle-cell500 mA4.2 VSOT-23-5L

WS4054 is a SOT-23-5L linear charger for one Li-ion cell, programmable up to 500 mA and regulated to 4.2 V nominal.

Best for

  • Low-cost single-cell Li-ion charging
  • USB-powered portable devices
  • Charge currents up to 500 mA

Avoid if

  • Multi-cell battery packs
  • Applications requiring switching-charge efficiency
  • Designs needing documented compliance or lifecycle information

Check before use

  • Confirm RPROG value and resulting charge current
  • Evaluate thermal performance at maximum charge current
  • Confirm package and procurement documentation

Key specifications

Battery type
Single-cell lithium-ion
Charge current
Up to 500 mA
Float voltage
4.2 V nominal
Input voltage
4.25 V to 6.5 V
Trickle threshold
2.9 V nominal
Package
SOT-23-5L

Compliance & Environment

RoHS
RoHS

Application

Portable consumer electronicsUSB-powered battery chargingBluetooth devices

Datasheet

2201121500_WPMtek-Wei-Pan-Microelectronics-WS4054_C2931367.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for WS4054: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

WS4054 is a single-cell lithium-ion linear battery charger IC from Worldsemi. It uses constant-current and constant-voltage charging, integrates the charging MOSFET, and provides a CHRG status output.