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Details for Texas Instruments


SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator
Buy Directly from Texas Instruments (1490 in Stock)
$1.7400 per unit
Series Information for LM2574HVM-15/NOPB - Texas Instruments


  • feature
    3.3-V, 5-V, 12-V, 15-V, and Adjustable Output Versions
  • feature
    52-kHz Fixed-Frequency Internal Oscillator
  • feature
    Adjustable Version Output Voltage Range: 1.23 V to 37 V (57 V for HV version) u00b14% Maximum Over Line and Load Conditions
  • feature
    High Efficiency
  • feature
    Requires Only 4 External Components
  • feature
    Specified 0.5-A Output Current
  • feature
    TTL Shutdown Capability, Low-Power Standby Mode
  • feature
    Thermal Shutdown and Current-Limit Protection
  • feature
    Uses Readily Available Standard Inductors
  • feature
    Wide Input Voltage Range: 40 V, up to 60 V for HV Version


The LM2574xx series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixedfrequency oscillator. The LM2574xx series offers a high-efficiency replacement for popular three-terminal linear regulators. Because of its high efficiency, the copper traces on the printed-circuit board (PCB) are normally the only heat sinking needed. A standard series of inductors optimized for use with the LM2574 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies. Other features include a specified ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50-μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.


Buck (Step Down)
Input Voltage Min:
Input Voltage Max:
DC / DC Converter IC Case:
No. of Pins:
Output Current:
Switching Frequency:
Operating Temperature Max:

Alternate Descriptions

Avnet America

Conv DC-DC Single Step Down 4V to 60V 14-Pin SOIC W Rail

Avnet America product

Avnet Europe

Conv DC-DC Single Step Down 4V to 60V 14-Pin SOIC W Rail

Avnet Europe product

Texas Instruments

SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator

Texas Instruments product