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Datasheet Linear Technology LT3957A

ManufacturerLinear Technology
SeriesLT3957A

Boost, Flyback, SEPIC and Inverting Converter with 5A, 40V Switch

Datasheets

  • Download » Datasheet, PDF, 567 Kb, Revision: A
    LT3957A - Boost, Flyback, SEPIC and Inverting Converter with 5A, 40V Switch
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    LT3957A
    Boost, Flyback, SEPIC and
    Inverting Converter
    with 5A, 40V Switch
    DESCRIPTION FEATURES n Wide Input Voltage Range: 3V to 40V
    Single Feedback Pin for Positive or Negative
    Output Voltage
    Internal 5A/40V Power Switch
    Current Mode Control Provides Excellent Transient
    Response
    Programmable Operating Frequency (100kHz to
    1MHz) with One External Resistor
    Synchronizable to an External Clock
    Low Shutdown Current < 1ОјA
    Internal 5.2V Low Dropout Voltage Regulator
    Programmable Input Undervoltage Lockout with
    Hysteresis
    Programmable Soft-Start
    Thermally Enhanced QFN (5mm Г— 6mm) Package The LTВ®3957A is a wide input range, current mode DC/DC
    converter which is capable of generating either positive or
    negative output voltages. It can be configured as either a
    boost, flyback, SEPIC or inverting converter. It features
    an internal low side N-channel power MOSFET rated for ...

Prices

Packaging

LT3957AEUHE#PBFLT3957AEUHE#TRPBFLT3957AIUHE#PBFLT3957AIUHE#TRPBF
Package5x6 QFN-365x6 QFN-365x6 QFN-365x6 QFN-36
Package CodeUHEUHEUHEUHE

Parametrics

LT3957AEUHE#PBFLT3957AEUHE#TRPBFLT3957AIUHE#PBFLT3957AIUHE#TRPBF
ArchitectureConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current Mode
Design ToolsLTspice File,LTpowerCAD ModelLTspice File,LTpowerCAD ModelLTspice File,LTpowerCAD ModelLTspice File,LTpowerCAD Model
Export Control, yes/nonononono
FeaturesResistor Set Frequency, External SynchronizationResistor Set Frequency, External SynchronizationResistor Set Frequency, External SynchronizationResistor Set Frequency, External Synchronization
Frequency, kHz1000100010001000
Frequency Adjust Range100kHz - 1MHz100kHz - 1MHz100kHz - 1MHz100kHz - 1MHz
Frequency Sync Range100kHz - 1MHz100kHz - 1MHz100kHz - 1MHz100kHz - 1MHz
Integrated Inductor, yes/nonononono
Ishutdown, ВµA0.10.10.10.1
Isupply, mA1.71.71.71.7
Max Phases1111
Monolithic, yes/noyesyesyesyes
Number of Outputs1111
Operating Temperature Range, °C0 to 850 to 85-40 to 85-40 to 85
Polyphase, yes/nonononono
Switch Current, A5.95.95.95.9
Synchronous, yes/nonononono
TopologyBoost, Flyback, Sepic, InvertingBoost, Flyback, Sepic, InvertingBoost, Flyback, Sepic, InvertingBoost, Flyback, Sepic, Inverting
Vin Max, V40404040
Vin Min, V3333
Vin Min Startup, V3333
Vout Max, V40404040
Vout Min, V1.61.61.61.6
Vswitch Max, V40404040

Eco Plan

Moldel Line

Series: LT3957A (4)

Manufacturer's Classification

  • Power Management > Switching Regulator > Inverting Regulators | SEPIC Regulators | Flyback, Forward and Isolated Controllers
  • Power Management > Switching Regulator > Step-Up (Boost) Regulators > Internal Power Switch Boost

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