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Datasheet Linear Technology LT3559-1

ManufacturerLinear Technology

Linear USB Battery Charger with Dual Buck Regulators


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    LTC3559/LTC3559-1 - Linear USB Battery Charger with Dual Buck Regulators
    Docket ↓
    Linear USB Battery Charger
    with Dual Buck Regulators
    Battery Charger
    n Standalone USB Charger
    n Up to 950mA Charge Current Programmable via
    Single Resistor
    n HPWR Input Selects 20% or 100% of Programmed
    Charge Current
    n NTC Input for Temperature Qualified Charging
    n Internal Timer Terminatio Bad Battery Detectio CHRG Indicates C/10 or Timeout
    Buck Regulators
    n 400mA Output Current
    n 2.25MHz Constant Frequency Operatio Zero Current in Shutdow Low Noise Pulse Skip Operation or Power Saving
    Burst Mode Operatio Low No-Load Quiescent Current: 35μA
    n Available in a Low Profile Thermally Enhanced
    16-Lead 3mm × 3mm QFN Package n Battery charge current is programmed via the PROG pin
    and the HPWR pin, with capability up to 950mA at the BAT
    pin. The battery charger has an NTC input for temperature
    qualified charging. The CHRG pin allows battery status to
    be monitored continuously during the charging process.
    An internal timer controls charger termination. ...



Package3x3 QFN-163x3 QFN-16
Package CodeUDUD


Battery ChemistryLi-Ion, Li-PolymerLi-Ion, Li-Polymer
Buck Output Current, A0.4, 0.40.4, 0.4
Demo BoardsDC1085ADC1085A
Design ToolsLTspice ModelLTspice Model
Export Control, yes/nonono
FeaturesBattery Charger, Burst ModeBattery Charger, Burst Mode
Float Voltage, V4.1V, 4.2V4.1V, 4.2V
Max Charge Current, A0.950.95
Number of Cells11
Number of Outputs22
Operating Temperature Range, °C0 to 850 to 85
Type of ChargerLinearLinear
Vin Max, V5.55.5
Vin Min, V33

Eco Plan

Other Options


Moldel Line

Series: LT3559-1 (2)

Manufacturer's Classification

  • Power Management > Battery Management > Battery Charger IC > Linear Battery Chargers
  • Power Management > PMIC & Multifunction > Battery Charger Plus DC/DC

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