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Datasheet Linear Technology LT1738

Manufacturer:Linear Technology
Series:LT1738

Slew Rate Controlled Ultralow Noise DC/DC Controller

Datasheets

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    LT1738 - Slew Rate Controlled Ultralow Noise DC/DC Controller
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    LT1738
    Slew Rate Controlled
    Ultralow Noise DC/DC Controller U DESCRIPTIO FEATURES


    ■ ■




    ■ The LT ®1738 is a switching regulator controller designed
    to lower conducted and radiated electromagnetic interference (EMI). Ultralow noise and EMI are achieved by
    controlling the voltage and current slew rates of an external N-channel MOSFET switch. Current and voltage slew
    rates can be independently set to optimize harmonic
    content of the switching waveforms vs efficiency. The
    LT1738 can reduce high frequency harmonic power by as
    much as 40dB with only minor losses in efficiency.
    The LT1738 utilizes a current mode architecture optimized for single switch topologies such as boost, flyback
    and Cuk. The IC includes gate drive and all necessary
    oscillator, control and protection circuitry. Unique error
    amp circuitry can regulate both positive and negative
    voltages. The internal oscillator may be synchronized to
    an external clock for more accurate placement of switching harmonics. Greatly Reduced Conducted and Radiated EMI ...

Eco Plan

 LT1738EG#PBFLT1738EG#TRPBFLT1738IG#PBFLT1738IG#TRPBF
RoHSCompliantCompliantCompliantCompliant

Parametrics

 LT1738EG#PBFLT1738EG#TRPBFLT1738IG#PBFLT1738IG#TRPBF
Demo BoardsDC514ADC514ADC514ADC514A
Design ToolsLTspice ModelLTspice ModelLTspice ModelLTspice Model
Export Control, yes/nonononono
FeaturesLow EMI, Adjustable Slew Rate, External SynchronizationLow EMI, Adjustable Slew Rate, External SynchronizationLow EMI, Adjustable Slew Rate, External SynchronizationLow EMI, Adjustable Slew Rate, External Synchronization
Frequency, kHz250250250250
Frequency Adjust Range20kHz - 250kHz20kHz - 250kHz20kHz - 250kHz20kHz - 250kHz
Frequency Sync Range20kHz - 290kHz20kHz - 290kHz20kHz - 290kHz20kHz - 290kHz
Integrated Inductor, yes/nonononono
Isupply, mA12121212
Monolithic, yes/nonononono
Number of Outputs1111
Operating Temperature Range, °C0 to 850 to 85-40 to 85-40 to 85
Polyphase, yes/nonononono
Switch Current, A20202020
Synchronous, yes/nonononono
TopologyBoost, Inverting, Sepic, FlybackBoost, Inverting, Sepic, FlybackBoost, Inverting, Sepic, FlybackBoost, Inverting, Sepic, Flyback
Vin Max, V20202020
Vin Min, V4444
Vout Max, V100100100100
Vout Maximum-3, -5, -12 and higher-3, -5, -12 and higher-3, -5, -12 and higher-3, -5, -12 and higher
Vout Min, V5555
Vswitch Max, V100100100100

Packaging

 LT1738EG#PBFLT1738EG#TRPBFLT1738IG#PBFLT1738IG#TRPBF
PackageSSOP-20SSOP-20SSOP-20SSOP-20
Package CodeGGGG

Manufacturer's Classification

Switching Regulator

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