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LM2676 Datasheet PDF

Part Series:LM2676 Series
Description:SIMPLE SWITCHER® 8V to 40V, 3A Low Component Count Step-Down Regulator
Document:LM2676S-ADJ/NOPB Datasheet PDF (38 Pages)

LM2676 Datasheet PDF

38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 1.2V to 37V 3A 8Pin(7+Tab) TO-263 T/R
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 3.3V 3A 8Pin(7+Tab) TO-263 Tube
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 3.3V 3A 8Pin(7+Tab) TO-263 T/R
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 12V 3A 8Pin(7+Tab) TO-263 Tube
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 12V 3A 14Pin VSON EP T/R
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 5V 3A 8Pin(7+Tab) TO-263 Tube
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 5V 3A 7Pin(7+Tab) TO-220 Tube
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 5V 3A 14Pin VSON EP T/R
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 1.2V to 37V 3A 14Pin VSON EP T/R
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 5V 3A 8Pin(7+Tab) TO-263 T/R
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 12V 3A 8Pin(7+Tab) TO-263 T/R
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 12V 3A 7Pin(7+Tab) TO-220 Tube
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 1.2V to 37V 3A 7Pin(7+Tab) TO-220 Tube
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 3.3V 3A 14Pin VSON EP T/R
38 Pages
TI
Conv DC-DC 8V to 40V Step Down Single-Out 3.3V 3A 7Pin(7+Tab) TO-220 Tube
38 Pages
TI
SIMPLE SWITCHER® 8V to 40V, 3A Low Component Count Step-Down Regulator

LM2676 - TI Function Overview

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 ON-resistance 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.
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
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