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LM25576 Arkusz danych(PDF) 1 Page - Texas Instruments

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Numer części LM25576
Szczegółowy opis  SIMPLE SWITCHER 42V, 3A Step-Down Switching Regulator
Download  29 Pages
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI1 - Texas Instruments

LM25576 Arkusz danych(HTML) 1 Page - Texas Instruments

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BST
SW
COMP
FB
SS
RAMP
RT
VCC
VIN
OUT
IS
GND
LM25576
VIN
VOUT
SYNC
SD
LM25576, LM25576-Q1
www.ti.com
SNVS470G – JANUARY 2007 – REVISED APRIL 2013
LM25576/LM25576-Q1 SIMPLE SWITCHER® 42V, 3A Step-Down Switching Regulator
Check for Samples: LM25576, LM25576-Q1
1
FEATURES
DESCRIPTION
The
LM25576
is
an
easy
to
use
SIMPLE
23
LM25576-Q1 is an Automotive Grade Product
SWITCHER® buck regulator which allows design
that is AEC-Q100 Grade 1 Qualified (
−40°C to +
engineers to design and optimize a robust power
125°C Operating Junction Temperature)
supply
using
a
minimum
set
of
components.
Integrated 42V, 170m
Ω N-channel MOSFET
Operating with an input voltage range of 6 - 42V, the
LM25576 delivers 3A of continuous output current
Ultra-Wide Input Voltage Range from 6V to 42V
with an integrated 170m
Ω N-Channel MOSFET. The
Adjustable Output Voltage as Low as 1.225V
regulator
utilizes
an
Emulated
Current
Mode
1.5% Feedback Reference Accuracy
architecture which provides inherent line regulation,
Operating Frequency Adjustable Between
tight load transient response, and ease of loop
compensation without the usual limitation of low-duty
50kHz and 1MHz with Single Resistor
cycles associated with current mode regulators. The
Master or Slave Frequency Synchronization
operating frequency is adjustable from 50kHz to
Adjustable Soft-Start
1MHz to allow optimization of size and efficiency. To
Emulated Current Mode Control Architecture
reduce EMI, a frequency synchronization pin allows
multiple IC’s from the LM(2)557x family to self-
Wide Bandwidth Error Amplifier
synchronize or to synchronize to an external clock.
Built-in Protection
The LM25576 ensures robustness with cycle-by-cycle
Automotive Grade Product Datasheet that is
current limit, short-circuit protection, thermal shut-
down, and remote shut-down. The device is available
AEC-Q100 Grade 0 Qualified is Available Upon
in a power enhanced HTSSOP-20 package featuring
Request.
an exposed die attach pad for thermal dissipation.
(
−40°C to + 150°C Operating Junction
The LM25576 is supported by the full suite of
Temperature)
WEBENCH® On-Line design tools.
APPLICATIONS
PACKAGE
Automotive
HTSSOP-20EP (Exposed Pad)
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 © 2007–2013, 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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