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Datasheet Linear Technology LT1977

Manufacturer:Linear Technology
Series:LT1977

High Voltage 1.5A, 500kHz Step-Down Switching Regulator with 100µA Quiescent Current

Datasheets

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    LT1977 - High Voltage 1.5A, 500kHz Step-Down Switching Regulator with 100µA Quiescent Current
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    LT1977
    High Voltage 1.5A, 500kHz
    Step-Down Switching Regulator
    with 100µA Quiescent Current
    U FEATURES DESCRIPTIO ■ The LT®1977 is a 500kHz monolithic buck switching
    regulator that accepts input voltages up to 60V. A high
    efficiency 1.5A, 0.2Ω switch is included on the die along
    with all the necessary oscillator, control and logic circuitry. Current mode topology is used for fast transient
    response and good loop stability. ■










    ■ Wide Input Range: 3.3V to 60V
    1.5A Peak Switch Current
    Burst Mode® Operation: 100µA Quiescent Current**
    Low Shutdown Current: IQ < 1µA ...

Eco Plan

 LT1977EFE#PBFLT1977EFE#TRPBFLT1977IFE#PBFLT1977IFE#TRPBF
RoHSCompliantCompliantCompliantCompliant

Parametrics

 LT1977EFE#PBFLT1977EFE#TRPBFLT1977IFE#PBFLT1977IFE#TRPBF
ArchitectureConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current Mode
Demo BoardsDC639ADC639ADC639ADC639A
Design ToolsLTspice ModelLTspice ModelLTspice ModelLTspice Model
Export Control, yes/nonononono
FeaturesBurst Mode, External SynchronizationBurst Mode, External SynchronizationBurst Mode, External SynchronizationBurst Mode, External Synchronization
Frequency, kHz500500500500
Frequency Sync Range575kHz - 700kHz575kHz - 700kHz575kHz - 700kHz575kHz - 700kHz
Integrated Inductor, yes/nonononono
Ishutdown, µA0.10.10.10.1
Isupply, mA0.10.10.10.1
Max Phases1111
Monolithic, yes/noyesyesyesyes
Number of Outputs1111
Operating Temperature Range, °C0 to 850 to 85-40 to 85-40 to 85
Output Current, A1.241.241.241.24
Polyphase, yes/nonononono
Switch Current, A2.42.42.42.4
Synchronous, yes/nonononono
TopologyBuckBuckBuckBuck
Vin Max, V60606060
Vin Min, V3.33.33.33.3
Vout Max, V54545454
Vout Maximum.90VIN.90VIN.90VIN.90VIN
Vout Min, V1.21.21.21.2
Vref Accuracy Over Temp, %2222

Packaging

 LT1977EFE#PBFLT1977EFE#TRPBFLT1977IFE#PBFLT1977IFE#TRPBF
PackageTSSOP-16TSSOP-16TSSOP-16TSSOP-16
Package CodeFEFEFEFE

Manufacturer's Classification

Switching Regulator

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