LM2672M-5.0/NOPB National Semiconductor, LM2672M-5.0/NOPB Datasheet

LM2672M-5.0/NOPB

Manufacturer Part Number

LM2672M-5.0/NOPB

Description

IC REG SIMPLE SWITCHER 8-SOIC

Manufacturer

National Semiconductor

Series

SIMPLE SWITCHER®r

Type

Step-Down (Buck)r

Datasheets

1.LM2672LD-ADJNOPB.pdf (26 pages)

2.LM2672M-5.0NOPB.pdf (6 pages)

Specifications of LM2672M-5.0/NOPB

Internal Switch(s)

Yes

Synchronous Rectifier

Number Of Outputs

Voltage - Output

Current - Output

Frequency - Switching

260kHz

Voltage - Input

6.5 ~ 40 V

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

8-SOIC (3.9mm Width)

Current, Input Bias

85 nA

Current, Output

1 A

Current, Supply

2.5 mA

Frequency, Oscillator

260 kHz

Package Type

SOIC

Regulator Type

Buck (Step-Down)

Temperature, Operating, Range

-40 to +125 °C

Voltage, Input

8 to 40 V

Voltage, Output

5 V

Primary Input Voltage

12V

No. Of Outputs

Output Voltage

Output Current

No. Of Pins

Operating Temperature Range

-40Â°C To +125Â°C

Msl

MSL 1 - Unlimited

Filter Terminals

SMD

Rohs Compliant

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Power - Output

Lead Free Status / Rohs Status

RoHS Compliant part Electrostatic Device

Other names

*LM2672M-5.0
*LM2672M-5.0/NOPB
LM2672M-5.0

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

H&T Electronics

Part Number:

LM2672M-5.0/NOPB

Quantity:

2 200

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LM2672

SIMPLE SWITCHER

Step-Down Voltage Regulator with Features

General Description

The LM2672 series of regulators are monolithic integrated

circuits built with a LMDMOS process. These regulators pro-

vide all the active functions for a step-down (buck) switching

regulator, capable of driving a 1A load current with excellent

line and load regulation. These devices are available in fixed

output voltages of 3.3V, 5.0V, 12V, and an adjustable output

version.

Requiring a minimum number of external components, these

regulators are simple to use and include patented internal

frequency compensation (Patent Nos. 5,382,918 and

5,514,947), fixed frequency oscillator, external shutdown,

soft-start, and frequency synchronization.

The LM2672 series operates at a switching frequency of

260 kHz, thus allowing smaller sized filter components than

what would be needed with lower frequency switching regu-

lators. Because of its very high efficiency (>90%), the copper

traces on the printed circuit board are the only heat sinking

needed.

A family of standard inductors for use with the LM2672 are

available from several different manufacturers. This feature

greatly simplifies the design of switch-mode power supplies

using these advanced ICs. Also included in the datasheet are

selector guides for diodes and capacitors designed to work in

switch-mode power supplies.

Other features include a guaranteed ±1.5% tolerance on out-

put voltage within specified input voltages and output load

conditions, and ±10% on the oscillator frequency. External

shutdown is included, featuring typically 50 μA stand-by cur-

rent. The output switch includes current limiting, as well as

thermal shutdown for full protection under fault conditions.

Typical Application

(Fixed Output Voltage Versions)

SIMPLE SWITCHER

Windows

is a registered trademark of Microsoft Corporation.

is a registered trademark of National Semiconductor Corporation

12934

Power Converter High Efficiency 1A

To simplify the LM2672 buck regulator design procedure,

there exists computer design software, LM267X Made Sim-

ple version 6.0.

Features

■

Typical Applications

■

Efficiency up to 96%

Available in SO-8, 8-pin DIP and LLP packages

Computer Design Software LM267X Made Simple

version 6.0

Simple and easy to design with

Requires only 5 external components

Uses readily available standard inductors

3.3V, 5.0V, 12V, and adjustable output versions

Adjustable version output voltage range: 1.21V to 37V

±1.5% max output voltage tolerance over line and load

conditions

Guaranteed 1A output load current

0.25Ω DMOS Output Switch

Wide input voltage range: 8V to 40V

260 kHz fixed frequency internal oscillator

TTL shutdown capability, low power standby mode

Soft-start and frequency synchronization

Thermal shutdown and current limit protection

Simple High Efficiency (>90%) Step-Down (Buck)

Regulator

Efficient Pre-Regulator for Linear Regulators

1293401

Related parts for LM2672M-5.0/NOPB

LM2672M-5.0/NOPB Summary of contents

Page 1

... The output switch includes current limiting, as well as thermal shutdown for full protection under fault conditions. Typical Application (Fixed Output Voltage Versions) SIMPLE SWITCHER ® registered trademark of National Semiconductor Corporation Windows ® registered trademark of Microsoft Corporation. © 2007 National Semiconductor Corporation ® ...

Page 2

... LM2672LDX-3.3 S0002B LM2672LD-5.0 S0003B LM2672LDX-5.0 S0003B LM2672LD-ADJ S0004B S0004B LM2672M-12 2672M-12 LM2672MX-12 2672M-12 LM2672M-3.3 2672M-3.3 LM2672MX-3.3 2672M-3.3 LM2672M-5.0 2672M-5.0 LM2672MX-5.0 2672M-5.0 LM2672M-ADJ 2672M-ADJ LM2672MX-ADJ 2672M-ADJ LM2672N-12 LM2672N-12 LM2672N-3.3 LM2672N-3.3 LM2672N-5.0 LM2672N-5.0 LM2672N-ADJ LM2672N-ADJ 2 8-Lead Package Top View 1293402 SO-8/DIP Package Supplied as: ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage ON/OFF Pin Voltage Switch Voltage to Ground Boost Pin Voltage Feedback Pin Voltage ESD Susceptibility Human Body Model (Note 2) Power Dissipation Electrical Characteristics LM2672-3 ...

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LM2672M-5.0/NOPB National Semiconductor, LM2672M-5.0/NOPB Datasheet

LM2672M-5.0/NOPB

Specifications of LM2672M-5.0/NOPB

Available stocks

Related parts for LM2672M-5.0/NOPB

LM2672M-5.0/NOPB Summary of contents

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