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LM25575 Arkusz danych(PDF) 1 Page - Texas Instruments

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Numer części LM25575
Szczegółowy opis  SIMPLE SWITCHER짰 42V, 1.5A Step-Down Switching Regulator
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI1 - Texas Instruments

LM25575 Arkusz danych(HTML) 1 Page - Texas Instruments

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BST
SW
COMP
FB
SS
RAMP
RT
VCC
VIN
OUT
IS
GND
LM25575
VIN
VOUT
SYNC
SD
LM25575, LM25575Q
www.ti.com
SNVS479F – JANUARY 2007 – REVISED FEBRUARY 2009
LM25575/LM25575Q SIMPLE SWITCHER® 42V, 1.5A Step-Down Switching Regulator
Check for Samples: LM25575, LM25575Q
1
FEATURES
PACKAGE
23
LM25575Q is an Automotive Grade Product
HTSSOP-16EP (Exposed Pad)
that is AEC-Q100 Grade 1 Qualified (
−40°C to +
125°C Operating Junction Temperature)
DESCRIPTION
The
LM25575
is
an
easy
to
use
SIMPLE
Integrated 42V, 330m
Ω N-channel MOSFET
SWITCHER® buck regulator which allows design
Ultra-Wide Input Voltage Range from 6V to 42V
engineers to design and optimize a robust power
Adjustable Output Voltage as Low as 1.225V
supply
using
a
minimum
set
of
components.
Operating with an input voltage range of 6 - 42V, the
1.5% Feedback Reference Accuracy
LM25575 delivers 1.5A of continuous output current
Operating Frequency Adjustable Between
with an integrated 330m
Ω N-Channel MOSFET. The
50kHz and 1MHz with Single Resistor
regulator
utilizes
an
Emulated
Current
Mode
Master or Slave Frequency Synchronization
architecture which provides inherent line regulation,
tight load transient response, and ease of loop
Adjustable Soft-Start
compensation without the usual limitation of low-duty
Emulated Current Mode Control Architecture
cycles associated with current mode regulators. The
Wide Bandwidth Error Amplifier
operating frequency is adjustable from 50kHz to
Built-in Protection
1MHz to allow optimization of size and efficiency. To
reduce EMI, a frequency synchronization pin allows
Automotive Grade Product Datasheet that is
multiple IC’s from the LM(2)557x family to self-
AEC-Q100 Grade 0 Qualified is Available Upon
synchronize or to synchronize to an external clock.
Request
The LM25575 guarantees robustness with cycle-by-
(
−40°C to + 150°C Operating Junction
cycle current limit, short-circuit protection, thermal
Temperature)
shut-down, and remote shut-down. The device is
available in a power enhanced HTSSOP-16 package
featuring an exposed die attach pad for thermal
APPLICATIONS
dissipation. The LM25575 is supported by the full
Automotive
suite of WEBENCH® On-Line design tools.
Industrial
Simplified Application Schematic
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
WEBENCH is a registered trademark of Texas Instruments.
3
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2007–2009, 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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