LTC4001
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LTC4001

2A Synchronous Buck Li-Ion Charger

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $2.66
Features
  • Low Power Dissipation
  • 2A Maximum Charge Current
  • No External MOSFETs, Sense Resistor or Blocking Diode Required
  • Remote Sensing at Battery Terminals
  • Programmable Charge Termination Timer
  • Preset 4.2V Float Voltage with ±0.5% Accuracy
  • Programmable Charge Current Detection/Termination
  • Automatic Recharge
  • Thermistor Input for Temperature Qualified Charging
  • Compatible with Current Limited Wall Adapters
  • Low Profile 16-Lead (4mm × 4mm) QFN Package
Additional Details
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The LTC4001 is a 2A Li-Ion battery charger intended for 5V wall adapters. It utilizes a 1.5MHz synchronous buck converter topology to reduce power dissipation during charging. Low power dissipation, an internal MOSFET and sense resistor allow a physically small charger that can be embedded in a wide range of handheld applications. The LTC4001 includes complete charge termination circuitry, automatic recharge and a ±1% 4.2V float voltage. Input short-circuit protection is included so no blocking diode is required.

 Battery charge current, charge timeout and end-of-charge indication parameters are set with external components. Additional features include shorted cell detection, temperature qualified charging and overvoltage protection. The LTC4001 is available in a low profile (0.75mm) 16-lead (4mm × 4mm) QFN package.

Float Voltage
LTC4001 4.2V
LTC4001-1 4.1V

Applications

  • Handheld Battery-Powered Devices
  • Handheld Computers
  • Charging Docks and Cradles
  • Digital Cameras
  • Smart Phones
Part Models 2
1ku List Price Starting From $2.66

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4001EUF#PBF
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LTC4001EUF#TRPBF
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Software & Part Ecosystem

Software & Part Ecosystem

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