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Datasheet Linear Technology LTC4055-1

ManufacturerLinear Technology

USB Power Controller and Li-Ion Linear Charger


  • Download » Datasheet, PDF, 304 Kb, Revision: B
    LTC4055/LTC4055-1 - USB Power Controller and Li-Ion Linear Charger
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    USB Power Controller
    and Li-Ion Charger
    FEATURES DESCRIPTION n The LTC®4055/LTC4055-1 are USB power manager and
    Li-Ion battery chargers designed to work in portable
    battery-powered applications. The parts manage and limit
    the total current used by the USB peripheral for operation
    and battery charging. Depending on the state of the current
    select pin (HPWR), total input current can be limited to
    either 100mA or 500mA. The voltage drop from the USB
    supply or battery to the USB peripheral is typically less than
    100mV at 400mA and 20mV at 80mA. Other management
    features include: automatic switchover to battery when
    input is removed, inrush current limiting, reverse current
    blocking, undervoltage lockout and thermal shutdown. n APPLICATIONS
    n Portable USB Devices: Cameras, MP3 Players, PDAs L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
    PowerPath is a trademark of Linear Technology Corporation. All other trademarks are the
    property of their respective owners. *Protected by U.S. Patent, including 6522118. The LTC4055/LTC4055-1 include a complete constantcurrent/constant-voltage linear charger for single-cell
    Li-ion batteries. The float voltage applied to the battery
    is held to a tight 0.8% tolerance, and charge current is
    programmable using an external resistor to ground. Fully
    discharged cells are automatically trickle charged at 10%
    of the programmed current until the cell voltage exceeds ...



Package4x4 QFN-164x4 QFN-16
Package CodeUFUF


Battery ChemistryLi-Ion, Li-PolymerLi-Ion, Li-Polymer
Demo BoardsDC676ADC676A
Export Control, yes/nonono
FeaturesDual Input, PowerPathDual Input, PowerPath
Float Voltage, V4.1V, 4.2V4.1V, 4.2V
Max Charge Current, A1.251.25
Number of Cells11
Number of Outputs11
Operating Temperature Range, °C0 to 850 to 85
PowerPathLinear PowerPath, 200mΩ Internal Ideal DiodeLinear PowerPath, 200mΩ Internal Ideal Diode
Type of ChargerLinearLinear
Vin Max, V5.55.5
Vin Min, V4.34.3

Eco Plan

Other Options


Moldel Line

Series: LTC4055-1 (2)

Manufacturer's Classification

  • Power Management > PMIC & Multifunction > USB Power Manager (PowerPath, Battery Charger)

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