供应1A线性稳压IC LM2575HVT-12

地区:广东 深圳
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Features

  • 3.3V, 5V, 12V, 15V, and adjustable output versions
  • Adjustable version output voltage range,
     1.23V to 37V (57V for HV version) ±4% max over
     line and load conditions
  • Guaranteed 1A output current
  • Wide input voltage range, 40V up to 60V for HV version
  • Requires only 4 external components
  • 52 kHz fixed frequency internal oscillator
  • TTL shutdown capability, low power standby mode
  • High efficiency
  • Uses readily available standard inductors
  • Thermal shutdown and current limit protection
  • P + Product Enhancement tested

    Description

    The LM2575 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, 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 fixed-frequency oscillator.

    The LM2575 series offers a high-efficiency replacement for popular three-terminal 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 optimized for use with the LM2575 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.

    Other features include a guaranteed ±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.


    Applications

  • Simple high-efficiency step-down (buck) regulator
  • Efficient pre-regulator for linear regulators
  • On-card switching regulators
  • Positive to negative converter (Buck-Boost)
  • 型号/规格

    LM2575HVT-12

    品牌/商标

    NSC