LM2575T-5.0/LF03 by Texas Instruments | DC to DC Converters | Avnet ASIA
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LM2575T-5.0/LF03

Texas Instruments

Conv DC-DC Single Step Down 4V to 40V 5-Pin(5+Tab) TO-220

Manufacturer Part #: LM2575T-5.0/LF03

Alternate Part #: LM2575T-5.0/LF03


RoHS Compliant

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Information

The LM2575 greatly simplifies the design of switching power supplies by conveniently providing all the active functions needed for a step-down (buck) switching regulator in an integrated circuit. Accepting a wide input voltage range and available in an adjustable output version, the LM2575 has an integrated switch capable of delivering 1 A of load current, with excellent line and load regulation. The device also offers internal frequency compensation, a fixed-frequency oscillator, cycle-by-cycle current limiting, and thermal shutdown. In addition, a manual shutdown is available via an external (ON)\ and OFF pin.

The LM2575 represents a superior alternative to popular three-terminal linear regulators. Due to its high efficiency, it significantly reduces the size of the heat sink and, in many cases, no heat sink is required. Optimized for use with standard series of inductors available from several different manufacturers, the LM2575 greatly simplifies the design of switch-mode power supplies by requiring a minimal addition of only four to six external components for operation.

The LM2575 is characterized for operation over the virtual junction temperature range of -40°C to 125°C.

Key Features

  • Adjustable With a Range of 1.23 V to 37 V and ±4% Regulation (Max) Over Line, Load, and Temperature Conditions
  • Specified 1-A Output Current
  • Wide Input Voltage Range. . .4.75 V to 40 V
  • Uses Readily Available Standard Inductors
  • 52-kHz (Typ) Fixed-Frequency Internal Oscillator
  • TTL Shutdown Capability With 50-µA (Typ) Standby Current
  • High Efficiency. . .as High as 88% (Typ)
  • Thermal Shutdown and Current-Limit Protection With Cycle-by-Cycle Current Limiting
  • For the Full Offering of Voltages (Including Fixed-Output Options) and Packages (Including TO-263), see TL2575 Datasheet
  • Technical Attributes

    Description
    Value
    Find similar Parts
    Pin Count
    5
    Product Dimensions
    10.16 x 4.7 x 8.89 mm
    Output Voltage
    5 V
    Operating Supply Voltage
    4 to 40 V
    Lead Finish
    Matte Tin
    Output Type
    Fixed
    MSL Level
    1
    Switching Regulator
    Yes
    Switching Frequency
    58 kHz
    Supplier Package
    TO-220
    Mounting
    Through Hole
    Maximum Input Voltage
    40 V
    Operating Temperature
    -40 to 125 °C
    Maximum Output Current
    1 A
    Number of Outputs
    1
    Efficiency
    77 %
    Minimum Input Voltage
    4 V
    Type
    Step Down

    ECCN / UNSPSC

    Description
    Value
    ECCN:
    EAR99

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