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WILLSEMI WS4518D-6/TR product image
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  • Pinout Diagram
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WILLSEMI WS4518D-6/TRRoHS

Manufacturer
WILLSEMIAsian Brands
MPN
WS4518D-6/TR
LCSC Part #
C910991
Packaging
WDFN-6-EP(2x2)
Customer #
Key Attributes
300mA, Single Li-ion Battery Charger
Datasheetpdf iconWILLSEMI WS4518D-6/TR
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QtyUnit Price(Reference Only)Total Amount
5+$ 0.2029$ 1.01
50+$ 0.1603$ 8.02
150+$ 0.1421$ 21.32
500+$ 0.1193$ 59.65
3,000+$ 0.1091$ 327.30
6,000+$ 0.103$ 618.00
Standard Packaging3000/Full Reel
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Battery Management
ManufacturerWILLSEMI
PackagingWDFN-6-EP(2x2)
FeaturesConstant current charging;Constant voltage charging;Trickle charging;Automatic recharge;Charge termination;Programmable charging current;Soft-start;Under-voltage lockout
Operating Temperature-45℃~+85℃
Quiescent Current20uA
0V Battery Charge-
Type of BatteryLithium Battery
Operating Voltage2.9V~8V
The Chip TypeCharging IC
Interface-
Balance Current-
Charge Current - Max300mA
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Additional Information

TypeDetails
Minimum5
Multiple5
Standard Packaging3000
Sales UnitPiece

Introduction

AI Translation

The WS4518D is a complete constant-current / constant voltage linear charger for single cell Lithium-Ion batteries. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The WS4518D automatically terminates the charge cycle when the charge current drops to 3/10 the programmed value after the final float voltage is reached. When the input supply (wall adapter or USB supply) is removed, the WS4518D automatically enters a low current state, dropping the battery drain current to less than 0.5uA. The WS4518D can be put into shutdown mode, reducing supply current to 40uA (Typ.). The WS4518D is available in a small package with DFN2X2-6L. Standard product is Pb-Free.

Features

AI Translation
  • Programmable Charge Current Up to 300mA
  • Over-Temperature Protection
  • Under Voltage Lockout Protection
  • Automatic Recharge Threshold 4.05V(Typ.)
  • Charge Status Output Pin
  • 2.9V Trickle Charge Threshold
  • Soft-Start Limits Inrush Current

Applications

AI Translation
  • Wireless phone
  • MP3/MP4 Player
  • Bluetooth device