LM2678T-12/NOPB Part Information

Details for LM2678T-12/NOPB by Texas Instruments

Electronic & Electrical Components>Semiconductors - ICs>Power Management

Part Description

The LM2678 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down (buck) switching regulator capable of driving up to 5-A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low ONresistance DMOS power switch. The series consists of fixed output voltages of 3.3 V, 5 V, and 12 V and an adjustable output version. The SIMPLE SWITCHER® concept provides for a complete design using a minimum number of external components. A high fixed frequency oscillator (260 kHz) allows the use of physically smaller sized components. A family of standard inductors for use with the LM2678 are available from several manufacturers to greatly simplify the design process. The LM2678 series also has built-in thermal shutdown, current limiting, and an ON/OFF control input that can power down the regulator to a low 50μA quiescent current standby condition. The output voltage is ensured to a ±2% tolerance. The clock frequency is controlled to within a ±11% tolerance.

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Part Features

  • 120-mu03a9 DMOS Output Switch
  • 260-kHz Fixed Frequency Internal Oscillator
  • 3.3-V, 5-V, and 12-V Fixed Output and Adjustable (1.2 V to 37 V) Versions
  • 50-u03bcA Standby Current When Switched OFF
  • Efficiency Up to 92%
  • Simple and Easy to Design Using Off-the-Shelf External Components
  • Wide Input Voltage Range: 8 V to 40 V
  • u00b12% Maximum Output Tolerance Over Full Line and Load Conditions
  • u221240 to 125u00b0C Operating Junction Temperature

Part Specifications

Topology Buck (Step Down)
Input Voltage Min 8V
Input Voltage Max 40V
DC / DC Converter IC Case TO-220
No. of Pins 7Pins
Output Current 5A
Switching Frequency 260kHz
Product Range -
MSL -
RoHS Compliant

Alternative Part Descriptions

  • Step-down switching regulator,LM2678T-12 | RS Components
  • STEP-DOWN REGULATOR, TO-220-7; Topology:Buck (Step Down); Input Voltage Min:8V; Input Voltage Max:40V; DC / DC Converter IC Case:TO-220; No. of Pins:7Pins; Output Current:5A; Switching Frequency:260kHz; Product Range:-; MSL:- RoHS Compliant: Yes | Newark Electronics
  • PMIC; DC/DC converter; Uin: 8÷40V; Uout: 12V; TO220-7; buck | Transfer Multisort Elektronik
  • Switch. Reg 5A 12V 45Vs TO220-7 | Schukat Electronic
  • 8V to 40V, 5A SIMPLE SWITCHER® buck converter with high efficiency | Texas Instruments

Frequently Asked Questions

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Additional datasheets, footprints and schematics for LM2678T-12/NOPB are listed in our Part Details tab. You can also find the LM2678T-12/NOPB image and similar parts on this details page.

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What category does LM2678T-12/NOPB fall under?

The LM2678T-12/NOPB is listed under Electronic & Electrical Components > Semiconductors - ICs > Power Management.

Can I view similar or alternative parts?

You can view similar parts to LM2678T-12/NOPB when available in the Power Management range under the specifications section at the bottom of the details page.

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Is the LM2678T-12/NOPB RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Farnell.

Which authorised distributors for LM2678T-12/NOPB have stock available?

Authorised distributors including RS Components, Newark Electronics, Transfer Multisort Elektronik, Schukat Electronic and Texas Instruments have stock available or on a lead time for LM2678T-12/NOPB.

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