LM2674M-5.0 Description

The monolithic integrated circuit regulators of the LM2674 series were created using the LMDMOS technology. In order to drive a 500 mA load current with excellent line and load control, these regulators include all the active capabilities for a step-down (buck) switching regulator. These devices come with 3.3 V, 5 V, 12 V fixed output voltages as well as an adjustable output version. These regulators are easy to operate, need a minimal amount of external components, and have patented internal frequency adjustment and a fixed frequency oscillator.

LM2674M-5.0 Features

Efficiency up to 96%

Available in 8-Pin SOIC, PDIP, and 16-Pin WSON Packages

Simple and Easy to Design With

Requires Only 5 External Components

Uses Readily Available Standard Inductors

3-V, 5-V, 12-V, and Adjustable Output Versions

Adjustable Version Output Voltage Range: 1.21 V to 37 V

±1.5% Maximum Output Voltage Tolerance Over Line and Load Conditions

Ensured 500-mA Output Load Current

0.25-Ω DMOS Output Switch

Wide Input Voltage Range: 8 V to 40 V

260-kHz Fixed Frequency Internal Oscillator

TTL Shutdown Capability, Low Power Standby Mode

Thermal Shutdown and Current Limit Protection

LM2674M-5.0 Applications

Simple High Efficiency (>90%) Step-Down (Buck) Regulators

Efficient Preregulator for Linear Regulators

Positive-to-Negative Converters