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LM22674QMRE-ADJ/NOPB Scheda tecnica(PDF) 1 Page - Texas Instruments

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Il numero della parte LM22674QMRE-ADJ/NOPB
Spiegazioni elettronici  LM22674/-Q1 42 V, 500 mA SIMPLE SWITCHER짰 Step-Down Voltage Regulator with Features
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
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LM22674QMRE-ADJ/NOPB Scheda tecnica(HTML) 1 Page - Texas Instruments

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LM22674-ADJ
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LM22674, LM22674-Q1
SNVS590M – SEPTEMBER 2008 – REVISED NOVEMBER 2014
LM22674/-Q1 42 V, 500 mA SIMPLE SWITCHER® Step-Down Voltage Regulator
with Features
1 Features
3 Description
The LM22674 switching regulator provides all of the
1
Wide Input Voltage Range: 4.5 V to 42 V
functions necessary to implement an efficient high
Internally Compensated Voltage Mode Control
voltage step-down (buck) regulator using a minimum
Stable with Low ESR Ceramic Capacitors
of external components. This easy to use regulator
incorporates a 42 V N-channel MOSFET switch
200 m
Ω N-Channel MOSFET
capable of providing up to 500 mA of load current.
Output Voltage Options:
Excellent line and load regulation along with high
-ADJ (Outputs as Low as 1.285 V)
efficiency (> 90%) are featured. Voltage mode control
-5.0 (Output Fixed to 5 V)
offers short minimum on-time, allowing the widest
±1.5% Feedback Reference Accuracy
ratio between input and output voltages. Internal loop
compensation means that the user is free from the
Switching Frequency of 500 kHz
tedious task of calculating the loop compensation
–40°C to 125°C Operating Junction Temperature
components. Fixed 5 V output and adjustable output
Range
voltage options are available. A switching frequency
Precision Enable Pin
of 500 kHz allows for small external components and
good transient response. A precision enable input
Integrated Boot-Strap Diode
allows simplification of regulator control and system
Integrated Soft-Start
power sequencing. In shutdown mode the regulator
Fully WEBENCH® Enabled
draws only 25 µA (typ). Built in soft-start (500 µs, typ)
saves external components. The LM22674 also has
LM22674-Q1 is an Automotive Grade Product
built in thermal shutdown, and current limiting to
that is AEC-Q100 Grade 1 Qualified (–40°C to
protect against accidental overloads.
+125°C Operating Junction Temperature)
SO PowerPAD (Exposed Pad)
The
LM22674
device
is
a
member
of
Texas
Instruments'
SIMPLE
SWITCHER®
family.
The
SIMPLE SWITCHER® concept provides for an easy
2 Applications
to use complete design using a minimum number of
Industrial Control
external components and the TI WEBENCH® design
Telecom and Datacom Systems
tool. TI's WEBENCH® tool includes features such as
external component calculation, electrical simulation,
Embedded Systems
thermal simulation, and Build-It boards for easy
Conversions from Standard 24 V, 12 V and 5 V
design-in.
Input Rails
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM22674
HSOP (8)
4.89 mm x 3.90 mm
LM22674-Q1
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Application Schematic
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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