LM2673T-5.0

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM2673 SNVS030O – APRIL 2000 – REVISED JUNE 2016 LM2673 SIMPLE SWITCHER® 3-A Step-Down Voltage Regulator With Adjustable Current Limit 1 Features 1 Efficiency Up to 94% Simple and Easy to Design With (Using Off-The- Shelf External Components) Resistor Programmable Peak Current Limit Over a Range of 2 A to 5 A 150-mΩ DMOS Output Switch 3.3-V, 5-V, 12-V Fixed Output and Adjustable (1.2 V to 37 V) Versions ±2% Maximum Output Tolerance Over Full Line and Load Conditions Wide Input Voltage Range: 8 V to 40 V 260-KHz Fixed Frequency Internal Oscillator Soft-Start Capability –40 to 125°C Operating Junction Temperature Range 2 Applications Simple-to-Design, High Efficiency (>90%) StepDown Switching Regulators Efficient System Preregulator for Linear Voltage Regulators Battery Chargers 3 Description The LM2673 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 3-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 (...