LM2676

AKTIV

SIMPLE SWITCHER® 8 V bis 40 V, 3 A Abwärtsregler mit geringer Bauteilanzahl

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Datenblatt

document-pdfAcrobat LM2676 SIMPLE SWITCHER® Power Converter, High Efficiency, 3-A, Step-Down Voltage Regulator datasheet (Rev. M) (Englisch) PDF | HTML

Eine neuere Version dieses Produkts ist verfügbar

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LM2676

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Iout (max) (A)

3

Vin (min) (V)

8

Vin (max) (V)

40

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

260

Switching frequency (max) (kHz)

260

Features

Enable, Over Current Protection

Control mode

Voltage mode

Vout (min) (V)

1.23

Vout (max) (V)

37

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0042

Iout (max) (A)

3

Vin (min) (V)

8

Vin (max) (V)

40

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

260

Switching frequency (max) (kHz)

260

Features

Enable, Over Current Protection

Control mode

Voltage mode

Vout (min) (V)

1.23

Vout (max) (V)

37

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.0042

TO-220 (NDZ)

7

82.6008 mm² 10.16 x 8.13

TO-263 (KTW)

7

153.924 mm² 10.1 x 15.24

VSON (NHM)

14

30 mm² 6 x 5

New product available:
- LMR51430 4.5 to 36-V, 3-A, 500-kHz and 1.1-MHz synchronous converter
For faster time to market:
- TLVM13630 3 to 36-V, 3-A, 200-kHz to 2.2-MHz power module
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

New product available:
- LMR51430 4.5 to 36-V, 3-A, 500-kHz and 1.1-MHz synchronous converter
For faster time to market:
- TLVM13630 3 to 36-V, 3-A, 200-kHz to 2.2-MHz power module
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

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 power converter 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 and 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 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 power converter 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 and 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.

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	Typ	Titel		Datum
*	Data sheet	LM2676 SIMPLE SWITCHER® Power Converter, High Efficiency, 3-A, Step-Down Voltage Regulator datasheet (Rev. M)	PDF \| HTML	01 Mai 2023
	Application note	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	25 Mär 2024
	Technical article	How to increase system reliability and simplify design using DC/DC converters	PDF \| HTML	13 Jun 2016
	Technical article	The importance of accurate switching frequency and current limit when selecting bu	PDF \| HTML	19 Apr 2016
	Technical article	Advantages of leaded packages in robust industrial designs	PDF \| HTML	08 Mär 2016
	Application note	Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)		12 Sep 2014
	Application note	AN-1187 Leadless Leadframe Package (LLP) (Rev. R)		07 Mai 2013
	EVM User's guide	AN-1135 LM267X 3A, 5A Evaluation Boards (Rev. D)		24 Apr 2013
	Application note	AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)		24 Apr 2013
	Application note	AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)		23 Apr 2013
	Application note	AN-1197 Selecting Inductors for Buck Converters (Rev. B)		23 Apr 2013
	Application note	AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)		23 Apr 2013
	Application note	AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)		23 Apr 2013
	Application note	AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)		23 Apr 2013
	Application note	AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)		23 Apr 2013
	Application note	AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)		23 Apr 2013
	Application note	AN-1Positive-to-Negative Buck-Boost Converter Using LM267x SIMPLE SWITCHER (Rev. E)		23 Apr 2013
	Application note	AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)		23 Apr 2013
	Application note	Simple Techniques Minimize Cross-Coupling in Distributed Power Systems		21 Mär 2007
	Application note	Input and Output Capacitor Selection		19 Sep 2005
	More literature	SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations		12 Jul 2005
	Application note	AN-643 EMI/RFI Board Design (Rev. B)		03 Mai 2004

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LM2676S-ADJEVM — Evaluierungsmodul für Abwärtswandler LM2676

The LM2676S-ADJEVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM2596 step-down converter. The EVM operates from an 8V to 40V input and provides a 5V output at 3A.

Benutzerhandbuch: PDF

Nicht verfügbar auf TI.com

Gehäuse	Pins	Herunterladen
TO-220 (NDZ)	7	Optionen anzeigen
TO-263 (KTW)	7	Optionen anzeigen
VSON (NHM)	14	Optionen anzeigen

Es gelten die allgemeinen Geschäftsbedingungen von TI für Evaluierungsartikel.

LM2676

SIMPLE SWITCHER® 8 V bis 40 V, 3 A Abwärtsregler mit geringer Bauteilanzahl

Eine neuere Version dieses Produkts ist verfügbar

Gleiche Funktionalität, andere Pinbelegung als verglichener Baustein

LM2676

Produktdetails

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Gleiche Funktionalität, andere Pinbelegung als verglichener Baustein

Technische Dokumentation

Design und Entwicklung

LM2676S-ADJEVM — Evaluierungsmodul für Abwärtswandler LM2676

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