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LM2678 - SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator

Download the LM2678 datasheet PDF. This datasheet also covers the LM2 variant, as both devices belong to the same simple switcher high efficiency 5a step-down voltage regulator family and are provided as variant models within a single manufacturer datasheet.

General Description

The LM2678 series of regulators are monolithic integrated circuits which provide all of the active functions for a stepdown (buck) switching regulator capable of driving up to 5A loads with excellent line and load regulation characteristics.

Key Features

  • n Efficiency up to 92% n Simple and easy to design with (using off-the-shelf external components) n 120 mΩ DMOS output switch n 3.3V, 5V and 12V fixed output and adjustable (1.2V to 37V ) versions n 50µA standby current when switched OFF n ±2%maximum output tolerance over full line and load conditions n Wide input voltage range: 8V to 40V n 260 KHz fixed frequency internal oscillator n.
  • 40 to +125˚C operating junction temperature range.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM2-678.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LM2678 High Efficiency 5-A Step-Down Voltage Regulator Texas Instruments

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LM2678 SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator April 2005 LM2678 SIMPLE SWITCHER® High Efficiency 5A Step-Down Voltage Regulator General Description The LM2678 series of regulators are monolithic integrated circuits which provide all of the active functions for a stepdown (buck) switching regulator capable of driving up to 5A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low ON-resistance DMOS power switch. The series consists of fixed output voltages of 3.3V, 5V and 12V and an adjustable output version. The SIMPLE SWITCHER concept provides for a complete design using a minimum number of external components.