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Datasheet Linear Technology LT1938

Manufacturer:Linear Technology
Series:LT1938

25V, 2.2A, 2.8MHz Step-Down Switching Regulator

Datasheets

  • Download » Datasheet, PDF, 271 Kb, Revision: A
    LT1938 - 25V, 2.2A, 2.8MHz Step-Down Switching Regulator
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    LT1938
    25V, 2.2A, 2.8MHz
    Step-Down
    Switching Regulator
    DESCRIPTION FEATURES Wide Input Voltage Range: 3.6V to 25V
    ■ 2.2A Maximum Output Current
    ■ Adjustable Switching Frequency: 300kHz to 2.8MHz
    ■ Low Shutdown Current: I < 1µA
    Q
    ■ Integrated Boost Diode
    ■ Power Good Flag
    ■ Saturating Switch Design: 0.18Ω On-Resistance
    ■ 1.265V Feedback Reference Voltage
    ■ Output Voltage: 1.265V to 20V
    ■ Soft-Start Capability
    ■ Small 10-Pin Thermally Enhanced (3mm × 3mm)
    DFN Package
    ■ APPLICATIONS ■ ■ ■ ■
    ■ Automotive Battery Regulation
    Power for Portable Products
    Distributed Supply Regulation
    Industrial Supplies
    Wall Transformer Regulation The LT®1938 is an adjustable frequency (300kHz to ...

Prices

Packaging

 LT1938EDD#PBFLT1938EDD#TRPBFLT1938IDD#PBFLT1938IDD#TRPBF
Package3x3 DFN-103x3 DFN-103x3 DFN-103x3 DFN-10
Package CodeDDDDDDDD

Parametrics

 LT1938EDD#PBFLT1938EDD#TRPBFLT1938IDD#PBFLT1938IDD#TRPBF
ArchitectureConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current Mode
Demo BoardsDC1273ADC1273ADC1273ADC1273A
Design ToolsLTspice File,LTpowerCAD ModelLTspice File,LTpowerCAD ModelLTspice File,LTpowerCAD ModelLTspice File,LTpowerCAD Model
Export Control, yes/nonononono
FeaturesIntegrated Boost Diode, Power Good, Resistor Set FrequencyIntegrated Boost Diode, Power Good, Resistor Set FrequencyIntegrated Boost Diode, Power Good, Resistor Set FrequencyIntegrated Boost Diode, Power Good, Resistor Set Frequency
Frequency, kHz2800280028002800
Frequency Adjust Range300kHz - 2.8MHz300kHz - 2.8MHz300kHz - 2.8MHz300kHz - 2.8MHz
Integrated Inductor, yes/nonononono
Ishutdown, µA0.10.10.10.1
Isupply, mA0.40.40.40.4
Max Phases1111
Monolithic, yes/noyesyesyesyes
Number of Outputs1111
Operating Temperature Range, °C0 to 850 to 85-40 to 85-40 to 85
Output Current, A2.22.22.22.2
Polyphase, yes/nonononono
Switch Current, A3.63.63.63.6
Synchronous, yes/nonononono
TopologyBuckBuckBuckBuck
Vin Max, V25252525
Vin Min, V3.63.63.63.6
Vout Max, V23.87523.87523.87523.875
Vout Maximum.95Vin.95Vin.95Vin.95Vin
Vout Min, V1.2651.2651.2651.265

Eco Plan

 LT1938EDD#PBFLT1938EDD#TRPBFLT1938IDD#PBFLT1938IDD#TRPBF
RoHSCompliantCompliantCompliantCompliant

Manufacturer's Classification

  • Power Management > Switching Regulator > Step-Down (Buck) Regulators > Internal Power Switch Buck

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