Datasheet4U Logo Datasheet4U.com

LM2670 - SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator

Download the LM2670 datasheet PDF. This datasheet also covers the LM2 variant, as both devices belong to the same simple switcher high efficiency 3a step-down voltage regulator family and are provided as variant models within a single manufacturer datasheet.

General Description

The LM2670 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 3A loads with excellent line and load regulation characteristics.

Key Features

  • n Efficiency up to 94% n Simple and easy to design with (using off-the-shelf external components) n 150 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 External Sync clock capability (280KHz to 400KHz) 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 (LM2-670.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LM2670 High Efficiency 3-A Step-Down Voltage Regulator Texas Instruments
LM2670S-12 High Efficiency 3-A Step-Down Voltage Regulator Texas Instruments
LM2670S-3.3 High Efficiency 3-A Step-Down Voltage Regulator Texas Instruments
LM2670S-5.0 High Efficiency 3-A Step-Down Voltage Regulator Texas Instruments
LM2670T-12 High Efficiency 3-A Step-Down Voltage Regulator Texas Instruments

Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
LM2671 SIMPLE SWITCHER Power Converter High Efficiency 500mA Step-Down Voltage Regulator
LM2672 SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator
LM2672EP SIMPLE SWITCHER Power Converter High Efficiency 1A Step-Down Voltage Regulator
LM2673 SIMPLE SWITCHER 3A Step-Down Voltage Regulator
LM2674 SIMPLE SWITCHER Power Converter High Efficiency 500 mA Step-Down Voltage Regulator

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
LM2670 SIMPLE SWITCHER High Efficiency 3A Step-Down Voltage Regulator with Sync August 1998 LM2670 SIMPLE SWITCHER ® High Efficiency 3A Step-Down Voltage Regulator with Sync General Description The LM2670 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 3A 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.