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Datasheet Microchip LM2576

ManufacturerMicrochip
SeriesLM2576

The LM2576 series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator

Datasheets

  • Download » Datasheet PDF, 59 Kb, Revision: 11-05-2015
    LM2576 - 52 kHz Simple 3A Buck Regulator
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    LM2576 Micrel, Inc. LM2576
    52kHz Simple 3A Buck Regulator General Description Features The LM2576 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, or 12V
    fixed output. Adjustable versions have an output voltage
    range from 1.23V to 37V. Both versions are capable of driving
    a 3A 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 LM2576 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 LM2576 series. This
    feature greatly simplifies the design of switch-mode 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 guaranteed
    to В±10%. External shutdown is included, featuring less than ...

Prices

Status

LM2576-12WTLM2576-12WULM2576-12WU-TRLM2576-3.3WTLM2576-3.3WULM2576-3.3WU-TRLM2576-5.0WTLM2576-5.0WULM2576-5.0WU-TRLM2576WTLM2576WULM2576WU-TR
Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)

Packaging

Parametrics

LM2576-12WTLM2576-12WULM2576-12WU-TRLM2576-3.3WTLM2576-3.3WULM2576-3.3WU-TRLM2576-5.0WTLM2576-5.0WULM2576-5.0WU-TRLM2576WTLM2576WULM2576WU-TR
# of Outputs111111111111
Automotive RatedNoNoNoNoNoNoNoNoNoNoNoNo
Duty Cycle Max, %0.980.980.980.980.980.980.980.980.980.980.980.98
Input Voltage Range, V4 - 404 - 404 - 404 - 404 - 404 - 404 - 404 - 404 - 404 - 404 - 404 - 40
Light Load Efficiency ModeNoNoNoNoNoNoNoNoNoNoNoNo
Operating Temperature Range, °C-40 to +85-40 to +85-40 to +85-40 to +85-40 to +85-40 to +85-40 to +85-40 to +85-40 to +85-40 to +85-40 to +85-40 to +85
Output Current, mA) Max300030003000300030003000300030003000300030003000
Output Voltage Range, V1.231.231.231.231.231.231.231.231.231.231.231.23
Quiescent Current, mA) type303030303030303030303030
Regulator TypeStep Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)Step Down (Buck)
SHUTDOWN Current, µA505050505050505050505050
Switching Frequency, kHz525252525252525252525252
Synchronous RectifierNoNoNoNoNoNoNoNoNoNoNoNo
Vfb, V1.231.231.231.231.231.231.231.231.231.231.231.23

Eco Plan

LM2576-12WTLM2576-12WULM2576-12WU-TRLM2576-3.3WTLM2576-3.3WULM2576-3.3WU-TRLM2576-5.0WTLM2576-5.0WULM2576-5.0WU-TRLM2576WTLM2576WULM2576WU-TR
RoHSCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliantCompliant

Moldel Line

Series: LM2576 (12)

Manufacturer's Classification

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

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