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LTC4059 Datasheet PDF - Linear Technology

LTC4059 image

Part Name
LTC4059

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page
12 Pages

File Size
204.3 kB

MFG CO.
Linear
Linear Technology Linear

DESCRIPTION
The LTC®4059/LTC4059A are constant-current/constant voltage linear chargers for single cell lithium-ion batteries. Their 2mm × 2mm DFN package and low external component count make these chargers especially well suited for portable applications. Furthermore, they are designed to work within USB power specifications.


FEATURES
â–  Programmable Charge Current Up to 900mA
â–  Charge Current Monitor Output for Charge Termination
â–  Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charging Rate Without Risk of Overheating*
â–  Constant-Current Source Mode for Charging Nickel Batteries (LTC4059 Only)
â–  ACPR Pin Indicates Presence of Input Supply (LTC4059A Only)
â–  No External MOSFET, Sense Resistor or Blocking Diode Required
â–  Operating Supply Voltage from 3.75V to 8V
â–  Charges Single Cell Li-Ion Batteries Directly from USB Port
â–  Preset 4.2V Charge Voltage with 0.6% Accuracy
â–  10µA Supply Current in Shutdown Mode
â–  Tiny 6-Lead (2mm × 2mm) DFN Package


APPLICATIONS
â–  Wireless PDAs
â–  Cellular Phones
â–  Portable Electronics
â–  Wireless Headsets
â–  Digital Cameras


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