RadioLocman.com Electronics ru
Advanced Search +
  

Datasheet Linear Technology LT1945

Manufacturer:Linear Technology
Series:LT1945

Dual Micropower DC/DC Converter with Positive and Negative Outputs

Datasheets

  • Download » Datasheet, PDF, 129 Kb
    LT1945 - Dual Micropower DC/DC Converter with Positive and Negative Outputs
    Docket ↓
    LT1945
    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)
    <1μA in Shutdown Mode
    Operates with VIN as Low as 1.2V
    Low VCESAT Switch: 250mV at 300mA ...

Eco Plan

 LT1945EMS#PBFLT1945EMS#TRPBFLT1945IMS#PBFLT1945IMS#TRPBF
RoHSCompliantCompliantCompliantCompliant

Parametrics

 LT1945EMS#PBFLT1945EMS#TRPBFLT1945IMS#PBFLT1945IMS#TRPBF
ArchitectureConstant Off-Time Current ModeConstant Off-Time Current ModeConstant Off-Time Current ModeConstant Off-Time Current Mode
Design ToolsLTspice FileLTspice FileLTspice FileLTspice File
Export Control, yes/nonononono
Frequency Adjust RangeConstant Off TimeConstant Off TimeConstant Off TimeConstant Off Time
Integrated Inductor, yes/nonononono
Ishutdown, µA1111
Isupply, mA0.020.020.020.02
Monolithic, yes/noyesyesyesyes
Number of Outputs2222
Operating Temperature Range, °C0 to 850 to 85-40 to 85-40 to 85
Polyphase, yes/nonononono
Switch Current, A0.350.350.350.35
Switch Current 2, A0.350.350.350.35
Synchronous, yes/nonononono
TopologyBoost, Sepic, Flyback, InvertingBoost, Sepic, Flyback, InvertingBoost, Sepic, Flyback, InvertingBoost, Sepic, Flyback, Inverting
Topology 1BoostBoostBoostBoost
Topology 2InvertingInvertingInvertingInverting
Vin Max, V15151515
Vin Min, V1.21.21.21.2
Vin Min Startup, V1.21.21.21.2
Vout Max, V36363636
Vout Max 2, V36363636
Vout Maximum36V36V36V36V
Vout Min, V1.231.231.231.23
Vout Min 2, V1.231.231.231.23
Vswitch Max, V36363636

Packaging

 LT1945EMS#PBFLT1945EMS#TRPBFLT1945IMS#PBFLT1945IMS#TRPBF
PackageMS-10MS-10MS-10MS-10
Package CodeMSMSMSMS

Manufacturer's Classification

Switching Regulator

Slices ↓
Radiolocman facebook Radiolocman twitter Radiolocman google plus