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LM2678SX-3.3
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LM2678SX-3.3

  • Category:Low dropout linear regulator
  • Product Name:High efficiency 5A buck regulator
  • Manufacturers:NSC
  • Production Batch Number:10+
  • Encapsulation:14-LLP
  • Stock Status:There is stock
  • Stock Quantity:18000
  • Minimum order quantity: 1
  • Details:Click here to find PDF information on LM2678SX-3.3
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  • Product introduction

peculiarity

  • Up to 92% conversion efficiency
  • Easy-to-use design (using off-the-shelf external components)
  • 120mΩ DMOS output switch
  • Fixed output and adjustable (1.2V to 37V) versions of 3.3V, 5V and 12V
  • When the standby current of 50μA is off,
  • Up to ± 2% output tolerance and load conditions across the line
  • Wide 8V to 40V Input Voltage Range:
  • Internal oscillator at fixed frequency at 260 kHz
  • Operating junction temperature range from -40 to +125 °C

illustrate

The LM2678 series of regulators are monolithic integrated circuits that provide step-down switching regulators capable of driving excellent line and load regulation characteristics with 5A loads (buck) all the positive functions. High efficiency (> 90%) is obtained by using a low on-resistance DMOS power switch. The series includes fixed output voltage and adjustable output versions of 3.3V, 5V and 12V.

THE SIMPLE SWITCHER CONCEPT PROVIDES A COMPLETE DESIGN USING A MINIMUM NUMBER OF EXTERNAL COMPONENTS. A higher fixed-frequency oscillator (260KHz) allows the use of smaller components. The LM2678 series for a standard inductor is available from several manufacturers, greatly simplifying the design process.

The LM2678 series also features built-in thermal shutdown, current limiting, an ON/OFF control input, and can adjust standby with a low quiescent current power of 50μA up and down. The output voltage is guaranteed to a tolerance of ± 2%. The clock frequency is controlled to a tolerance of 11% ±.


apply

  • Simple design, high efficiency (> 90%), step-down switching regulator
  • Efficient system pre-regulator linear regulator
  • Battery charger

andLM2678SX-3.3Related ICs are:


Model Manufacturers lot number encapsulation illustrate
LM2678SX-5.0/NOPB NSC 10+11+   Hong Kong spot, imported original
LM2678SX-3.3/NOPB   10+11+   Hong Kong spot, imported original
LM2678SX-ADJ/NOPB   10+11+   Hong Kong spot, imported original
LM2678SX-3.3 NSC 10+ 14-LLP High efficiency 5A buck regulator
LM2678SX-ADJ NSC 10+ TO263 High efficiency 5A buck regulator
LM2678SX-5.0 NSC 09+ TO263 High efficiency 5A buck regulator
LM2678SX-12 NSC 10+ LLP High efficiency 5A buck regulator

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