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Datasheet Microchip LM2575WU

ManufacturerMicrochip
SeriesLM2575
Part NumberLM2575WU

The LM2575 series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator

Datasheets

  • Download » Datasheet PDF, 157 Kb, Revision: 11-05-2015
    LM2575 - 52 kHz Simple 1A Buck Regulator
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    LM2575
    52kHz Simple 1A Buck Regulator General Description Features The LM2575 series of monolithic integrated circuits
    provide all the active functions for a step-down (buck)
    switching regulator. Fixed versions are available with a
    3.3V, 5V, 12V, fixed output. Adjustable versions have an
    output voltage range from 1.23V to 37V. Both versions are
    capable of driving a 1A load with excellent line and load
    regulation.
    These regulators are simple to use because they require a
    minimum number of external components and include
    internal frequency compensation and a fixed-frequency
    oscillator.
    The LM2575 series offers a high efficiency replacement for
    popular three-terminal adjustable linear regulators. It
    substantially reduces the size of the heat sink, and in
    many cases no heat sink is required.
    A standard series of inductors available from several
    different manufacturers are ideal for use with the LM2575
    series. This feature greatly simplifies the design of switchmode power supplies.
    The feedback voltage is guaranteed to В±2% tolerance for
    adjustable versions, and the output voltage is guaranteed
    to В±3% for fixed versions, within specified input voltages
    and output load conditions. The oscillator frequency is ...

Prices

Status

Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)

Packaging

PackageDDPAK
Pins5

Parametrics

# of Outputs1
Automotive RatedNo
Duty Cycle Max0.98 %
Input Voltage Range4 - 40 V
Light Load Efficiency ModeNo
Operating Temperature Range-40 to +85 °C
Output Current1000 mA) Max
Output Voltage Range1.23 V
Quiescent Current10 mA) type
Regulator TypeStep Down (Buck)
SHUTDOWN Current50 µA
Switching Frequency52 kHz
Synchronous RectifierNo
Vfb1.23 V

Eco Plan

RoHSCompliant

Moldel Line

Series: LM2575 (24)

Manufacturer's Classification

  • Power Management > Switching Regulators > Step Down up to 75V
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