LM2676S-ADJ Description
The LM2676S-ADJ regulator is a monolithic integrated circuit that provides 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-resistance DMOS power switch. The LM2676S-ADJ consists of fixed output voltages of 3.3-V, 5-V, and 12-V and an adjustable output version.
LM2676S-ADJ Features
Efficiency up to 94%
Simple and easy to design with (using off-the-shelf external components)
150-mΩ DMOS output switch
3.3-V, 5-V, 12-V Fixed output, and adjustable (1.2 V to 37 V) versions
50-µA Standby current when switched OFF
±2% Maximum output tolerance over the full line and load conditions
Wide input voltage range: 8 V to 40 V
260-kHz Fixed frequency internal oscillator
–40 to 125°C Operating junction temperature range
LM2676S-ADJ Applications
Communication module
Electricity meter
Calling button operating panel
Motor drives
