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Datasheet Linear Technology LT1945

ManufacturerLinear Technology

Dual Micropower DC/DC Converter with Positive and Negative Outputs


  • Download » Datasheet, PDF, 129 Kb, Revision: A
    LT1945 - Dual Micropower DC/DC Converter with Positive and Negative Outputs
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    Dual Micropower DC/DC
    Converter with Positive and
    Negative Outputs
    FEATURES DESCRIPTION n The LT®1945 is a dual micropower 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 LT1945 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
    without the use of costly transformers. The LT1945’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. n n Generates Well-Regulated Positive and
    Negative Outputs
    Low Quiescent Current:
    20μA in Active Mode (per Converter) 1V
    VFB2 < 0.6V 400
    1.5 Switch VCESAT ISW = 300mA 250 350 mV 350 400 mA Switch Current Limit 250 1945fa 2 LT1945
    ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating ...



Package CodeMSMSMSMS


Boost Switch Current, A0.350.350.350.35
Design ToolsLTspice FileLTspice FileLTspice FileLTspice File
Export Control, yes/nonononono
Number of Outputs2222
Operating Temperature Range, °C0 to 850 to 85-40 to 85-40 to 85
Vin Max, V15151515
Vin Min, V1.

Eco Plan


Moldel Line

Series: LT1945 (4)

Manufacturer's Classification

  • Power Management > Switching Regulator > Inverting Regulators | LCD/CCD/OLED Bias
  • Power Management > Switching Regulator > Step-Up (Boost) Regulators > Micropower Boost | Internal Power Switch Boost
  • Power Management > PMIC & Multifunction > Multitopology DC/DC

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