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LM2676 Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza LM2676
Descripción Electrónicos  LM2676 SIMPLE SWITCHER짰 High Efficiency 3A Step-Down Voltage Regulator
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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LM2676 Datasheet(HTML) 1 Page - Texas Instruments

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LM2676
www.ti.com
SNVS031J – APRIL 2000 – REVISED APRIL 2013
LM2676 SIMPLE SWITCHER® High Efficiency 3A Step-Down Voltage Regulator
Check for Samples: LM2676
1
FEATURES
DESCRIPTION
The LM2676 series of regulators are monolithic
2
Efficiency Up to 94%
integrated circuits which provide all of the active
Simple and Easy to Design with (Using Off-
functions for a step-down (buck) switching regulator
The-Shelf External Components)
capable of driving up to 3A loads with excellent line
150 m
Ω DMOS Output Switch
and load regulation characteristics. High efficiency
(>90%) is obtained through the use of a low ON-
3.3V, 5V and 12V Fixed Output and Adjustable
resistance DMOS power switch. The series consists
(1.2V to 37V) Versions
of fixed output voltages of 3.3V, 5V and 12V and an
50
μA Standby Current When Switched OFF
adjustable output version.
±2% Maximum Output Tolerance Over Full
The SIMPLE SWITCHER concept provides for a
Line and Load Conditions
complete design using a minimum number of external
Wide Input Voltage Range: 8V to 40V
components.
A
high
fixed
frequency
oscillator
(260KHz) allows the use of physically smaller sized
260 KHz Fixed Frequency Internal Oscillator
components. A family of standard inductors for use
−40 to +125°C Operating Junction Temperature
with
the
LM2676
are
available
from
several
Range
manufacturers to greatly simplify the design process.
The
LM2676
series
also
has
built
in
thermal
APPLICATIONS
shutdown, current limiting and an ON/OFF control
Simple to Design, High Efficiency (>90%) Step-
input that can power down the regulator to a low
Down Switching Regulators
50
μA quiescent current standby condition. The output
voltage is ensured to a ±2% tolerance. The clock
Efficient System Pre-Regulator for Linear
frequency is controlled to within a ±11% tolerance.
Voltage Regulators
Battery Chargers
Typical Application
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
SIMPLE SWITCHER, Switchers Made Simple are registered trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2000–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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