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Datasheet Linear Technology LT1725

Manufacturer:Linear Technology
Series:LT1725

General Purpose Isolated Flyback Controller

Datasheets

  • Download » Datasheet, PDF, 265 Kb, Revision: A
    LT1725 - General Purpose Isolated Flyback Controller
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    LT1725
    General Purpose
    Isolated Flyback Controller U FEATURES DESCRIPTIO ■ The LT®1725 is a monolithic switching regulator controller specifically designed for the isolated flyback topology.
    It drives the gate of an external MOSFET and is generally
    powered from a third transformer winding. These features
    allow for an application input voltage limited only by
    external power path components. The third transformer
    winding also provides output voltage feedback information, such that an optoisolator is not required. Its gate
    drive capability coupled with a suitable external MOSFET
    can deliver load power up to tens of watts. ■






    ■ Drives External Power MOSFET with External
    ISENSE Resistor
    Application Input Voltage Limited Only by
    External Power Components
    Senses Output Voltage Directly from Primary Side
    Winding—No Optoisolator Required
    Accurate Regulation Without User Trims ...

Prices

Packaging

 LT1725CGN#PBFLT1725CGN#TRPBFLT1725CS#PBFLT1725CS#TRPBFLT1725IGN#PBFLT1725IGN#TRPBFLT1725IS#PBFLT1725IS#TRPBF
PackageSSOP-16SSOP-16SO-16SO-16SSOP-16SSOP-16SO-16SO-16
Package CodeGNGNSSGNGNSS

Parametrics

 LT1725CGN#PBFLT1725CGN#TRPBFLT1725CS#PBFLT1725CS#TRPBFLT1725IGN#PBFLT1725IGN#TRPBFLT1725IS#PBFLT1725IS#TRPBF
Demo BoardsDC373A-A,DC373A-B,DC431A,DC508A,DC638A,DC562A-A,DC562A-B,DC562A-CDC373A-A,DC373A-B,DC431A,DC508A,DC638A,DC562A-A,DC562A-B,DC562A-CDC373A-A,DC373A-B,DC431A,DC508A,DC638A,DC562A-A,DC562A-B,DC562A-CDC373A-A,DC373A-B,DC431A,DC508A,DC638A,DC562A-A,DC562A-B,DC562A-CDC373A-A,DC373A-B,DC431A,DC508A,DC638A,DC562A-A,DC562A-B,DC562A-CDC373A-A,DC373A-B,DC431A,DC508A,DC638A,DC562A-A,DC562A-B,DC562A-CDC373A-A,DC373A-B,DC431A,DC508A,DC638A,DC562A-A,DC562A-B,DC562A-CDC373A-A,DC373A-B,DC431A,DC508A,DC638A,DC562A-A,DC562A-B,DC562A-C
Design ToolsLTspice ModelLTspice ModelLTspice ModelLTspice ModelLTspice ModelLTspice ModelLTspice ModelLTspice Model
Export Control, yes/nonononononononono
FeaturesNo Opto Isolator, Resistor Set FrequencyNo Opto Isolator, Resistor Set FrequencyNo Opto Isolator, Resistor Set FrequencyNo Opto Isolator, Resistor Set FrequencyNo Opto Isolator, Resistor Set FrequencyNo Opto Isolator, Resistor Set FrequencyNo Opto Isolator, Resistor Set FrequencyNo Opto Isolator, Resistor Set Frequency
Frequency, kHz250250250250250250250250
Frequency Adjust Range50kHz - 250kHz50kHz - 250kHz50kHz - 250kHz50kHz - 250kHz50kHz - 250kHz50kHz - 250kHz50kHz - 250kHz50kHz - 250kHz
Integrated Inductor, yes/nonononononononono
Isupply, mA1010101010101010
Monolithic, yes/nonononononononono
Number of Outputs11111111
Operating Temperature Range, °C0 to 700 to 700 to 700 to 70-40 to 85-40 to 85-40 to 85-40 to 85
Polyphase, yes/nonononononononono
Switch Current, A55555555
Synchronous, yes/nonononononononono
TopologyFlybackFlybackFlybackFlybackFlybackFlybackFlybackFlyback
Vin Max, V7575757575757575
Vin Min, V1616161616161616

Eco Plan

 LT1725CGN#PBFLT1725CGN#TRPBFLT1725CS#PBFLT1725CS#TRPBFLT1725IGN#PBFLT1725IGN#TRPBFLT1725IS#PBFLT1725IS#TRPBF
RoHSCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliant

Manufacturer's Classification

  • Power Management > Switching Regulator > Flyback, Forward and Isolated Controllers

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