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LM2674LDX-5.0
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LM2674LDX-5.0

  • Category:Low dropout linear regulator
  • Product Name:High efficiency 500mA buck regulator
  • Manufacturers:NSC
  • Production Batch Number:09+
  • Encapsulation:LLP
  • Stock Status:There is stock
  • Stock Quantity:2000
  • Minimum order quantity: 1
  • Details:Click here to find pdf information on LM2674LDX-5.0
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  • Product introduction

peculiarity

  • Up to 96% conversion efficiency
  • Available in SO-8 packages, 8-pin DIP and LLP packages
  • Computer design softwareThe LM267X is simple(Version 6.0)
  • Simple and easy to use design with
  • Only 5 external components are required
  • Use off-the-shelf standard inductors
  • 3.3V, 5.0V, 12V and adjustable output versions
  • Adjustable version output voltage range from 1.21V to 37V
  • ± 1.5% maximum output exceeds line voltage tolerance and load conditions
  • 500mA output load current is guaranteed
  • 0.25 DMOS output switch
  • Wide 8V to 40V Input Voltage Range:
  • Internal oscillator at fixed frequency at 260 kHz
  • TTL shutdown capability, low-power standby mode
  • Thermal shutdown and current limit protection

illustrate

The LM2674 series of regulators are monolithic integrated circuits with an LMDMOS process built in. These regulators provide all buck (buck) switching regulators with excellent line and load regulation at 500 mA with positive function of load current. These devices are available in fixed output voltages of 3.3V, 5.0V, 12V, and adjustable output versions.

Requiring a minimum number of external components, these regulators are simple to use, including patented internal frequency compensation (patent 5382918 and 5514947) and fixed frequency oscillators.

The LM2674 series operates at a switching frequency of 260 kHz, allowing a small size ratio to the filter assembly required by lower frequency switching regulators. Due to its very high efficiency (> 90%), copper traces of the printed circuit board are the only heat dissipation required.

A home use LM2674 standard inductor is available from several different manufacturers. This feature greatly simplifies the design of switching power supplies using these advanced integrated circuit supplies. Also included in the datasheet is a guide to selecting diodes and capacitors designed to operate in switch-mode power supplies.

Other features include a guaranteed tolerance of 1.5% of the output voltage specified in the ± and output load conditions for the input voltage and output load conditions, and a ± 10% of the oscillator frequency. External shutdown with a typical standby current of 50μA. The output switch includes current limit, thermal shutdown, and full protection during fault conditions.

To simplify the design process of the LM2674 buck regulator, computer design software exists, LM267X simple(Version 6.0).


apply

  • Simple high efficiency (> 90%) buck (buck) regulator
  • High efficiency pre-regulator, linear regulator
  • Positive to negative voltage converters

andLM2674LDX-5.0Related ICs are:


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LM2674LDX-5.0 NSC 09+ LLP High efficiency 500mA buck regulator

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