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LM2575 Datasheet 1-a Simple Step-down Switching Voltage Regulator

Manufacturer: Texas Instruments

Overview: Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM2575 SLVS569F – JANUARY 2005 – REVISED AUGUST 2015 LM2575 1-A Simple Step-Down Switching Voltage Regulator.

General Description

The LM2575 device 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.

Key Features

  • 1 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 (Typical) Fixed-Frequency Internal Oscillator.
  • TTL Shutdown Capability With 50-μA (Typical) Standby Current.
  • High Efficiency…as High as 88% (Typical).
  • Thermal Shutdown and Current-Limit Protect.

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