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Datasheet Linear Technology LTC3544

ManufacturerLinear Technology

Quad Synchronous Step-Down Regulator: 2.25MHz, 300mA, 200mA, 200mA, 100mA


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    LTC3544 - Quad Synchronous Step-Down Regulator: 2.25MHz, 300mA, 200mA, 200mA, 100mA
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    Quad Synchronous
    Step-Down Regulator: 2.25MHz,
    300mA, 200mA, 200mA, 100mA
    ■ ■

    ■ ■ ■

    ■ ■
    ■ High Efficiency: Up to 95%
    Four Independent Regulators Provide Up to 300mA,
    200mA, 200mA and 100mA Output Current
    2.25V to 5.5V Input Voltage Range
    2.25MHz Constant-Frequency Operation
    No Schottky Diodes Required
    Extremely Low Channel-to-Channel Transient
    Low Ripple (20mVP-P) Burst Mode Operation:
    IQ = 70μA (All Channels On)
    0.8V Reference Allows Low Output Voltages
    Shutdown Mode Draws <1μA Supply Current ...



Package3x3 QFN-163x3 QFN-16
Package CodeUDUD


ArchitectureConstant Frequency Current ModeConstant Frequency Current Mode
Demo BoardsDC1040A-ADC1040A-A
Design ToolsLTspice FileLTspice File
Export Control, yes/nonono
FeaturesBurst Mode, 100% Duty CycleBurst Mode, 100% Duty Cycle
Frequency, kHz2.252.25
Integrated Inductor, yes/nonono
Ishutdown, µA0.10.1
Isupply, mA0.070.07
Max Phases11
Monolithic, yes/noyesyes
Number of Outputs44
Operating Temperature Range, °C0 to 850 to 85
Output Current, A0.30.3
Output Current 2, A0.20.2
Output Current 3, A0.20.2
Polyphase, yes/nonono
Switch Current, A0.60.6
Switch Current 2, A0.40.4
Switch Current 3, A0.40.4
Synchronous, yes/noyesyes
Topology 1BuckBuck
Topology 2BuckBuck
Topology 3BuckBuck
Vin Max, V5.55.5
Vin Min, V2.252.25
Vout Max, V5.55.5
Vout Max 2, V5.55.5
Vout Max 3, V5.55.5
Vout MaximumVinVin
Vout Min, V0.80.8
Vout Min 2, V0.80.8
Vout Min 3, V0.80.8
Vref Accuracy Over Temp, %22

Eco Plan


Moldel Line

Series: LTC3544 (2)

Manufacturer's Classification

  • Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | Micropower Buck Regulators | Internal Power Switch Buck

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