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Datasheet Linear Technology LT1944

ManufacturerLinear Technology

Dual Micropower Step-Up DC/DC Converter


  • Download » Datasheet, PDF, 168 Kb, Revision: F
    LT1944 - Dual Micropower Step-Up DC/DC Converter
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    Dual Micropower Step-Up
    DC/DC Converter U FEATURES
    ■ ■

    ■ DESCRIPTIO The LT®1944 is a dual micropower step-up DC/DC converter in a 10-pin MSOP package. Each converter is
    designed with a 350mA current limit and an input voltage
    range of 1.2V to 15V, making the LT1944 ideal for a wide
    variety of applications. Both converters feature a quiescent current of only 20µA at no load, which further reduces
    to 0.5µA in shutdown. A current limited, fixed off-time
    control scheme conserves operating current, resulting in
    high efficiency over a broad range of load current. The 36V
    switch allows high voltage outputs up to 34V to be easily
    generated in a simple boost topology without the use of
    costly transformers. The LT1944’s low off-time of 400ns
    permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious
    portable applications. Low Quiescent Current:
    20µA in Active Mode 1V
    VFB < 0.6V 400
    1.5 Switch VCESAT ISW = 300mA 250 350 mV 350 400 mA 2
    8 3 ...



Package CodeMSMS


ArchitectureConstant Off-Time Current ModeConstant Off-Time Current Mode
Design ToolsLTspice ModelLTspice Model
Export Control, yes/nonono
Frequency Adjust RangeConstant Off-TimeConstant Off-Time
Integrated Inductor, yes/nonono
Ishutdown, A11
Isupply, mA0.020.02
Monolithic, yes/noyesyes
Number of Outputs22
Operating Temperature Range, °C0 to 850 to 85
Polyphase, yes/nonono
Switch Current, A0.350.35
Switch Current 2, A0.350.35
Synchronous, yes/nonono
TopologyBoost, Sepic, FlybackBoost, Sepic, Flyback
Topology 1BoostBoost
Topology 2BoostBoost
Vin Max, V1515
Vin Min, V1.21.2
Vin Min Startup, V1.21.2
Vout Max, V3636
Vout Max 2, V4040
Vout Min, V1.231.23
Vswitch Max, V3636

Eco Plan


Moldel Line

Series: LT1944 (2)

Manufacturer's Classification

  • Power Management > Switching Regulator > LCD/CCD/OLED Bias
  • Power Management > Switching Regulator > Step-Up (Boost) Regulators > Micropower Boost | Internal Power Switch Boost | Multiple Output Boost

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