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LM2676T-5.0

Texas Instruments
Part Number LM2676T-5.0
Manufacturer Texas Instruments
Description High Efficiency 3-A Step-Down Voltage Regulator
Published Apr 21, 2021
Detailed Description Product Folder Order Now Technical Documents Tools & Software Support & Community LM2676 SNVS031L – APRIL 2000 – RE...
Datasheet PDF File LM2676T-5.0 PDF File

LM2676T-5.0
LM2676T-5.0

Overview
Product Folder Order Now Technical Documents Tools & Software Support & Community LM2676 SNVS031L – APRIL 2000 – REVISED JUNE 2020 LM2676 SIMPLE SWITCHER® High Efficiency 3-A Step-Down Voltage Regulator 1 Features •1 New product available: LMR33630 36-V, 3-A, 400kHz synchronous converter • 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 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 2 Applications • Communication module • Electricity meter • Calling button operating panel • Motor drives 3 Description The LM2676 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 (260 kHz) allows the use of physically smaller sized components.
A family of standard inductors for use with the LM2676 are available from several manufacturers to greatly simplify the design process.
The LM2676 series also has built-in thermal shutdown, current limiting and an ON/OFF control input that can power down the regulator to a low 50‑µA quiescent current standby condition.
The output voltage is ensured to a ±2% tolerance.
The clock frequency is controlled to within a ±11% tolerance.
The new product, LMR33630, offers reduced BOM cost, higher eff...


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