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LM5576QMHX/NOPB bảng dữ liệu(PDF) 1 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  SIMPLE SWITCHER 75 V, 3 A Step-Down Switching Regulator
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LM5576QMHX/NOPB bảng dữ liệu(HTML) 1 Page - Texas Instruments

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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.
LM5576, LM5576-Q1
SNVS447J – JANUARY 2007 – REVISED NOVEMBER 2014
LM5576/-Q1 SIMPLE SWITCHER® 75 V, 3 A Step-Down Switching Regulator
1
1 Features
1
LM5576-Q1 is an Automotive Grade Product that
is AEC-Q100 grade 1 Qualified (
−40°C to + 125°C
Operating Junction Temperature) and AEC-Q100
Grade 0 Qualified (
−40°C to + 150°C Operating
Junction Temperature)
Integrated 75 V, 170 m
Ω N-channel MOSFET
Ultra-Wide Input Voltage Range from 6 V to 75 V
Adjustable Output Voltage as Low as 1.225 V
1.5% (Q1) and 1.65% (Q0) Feedback Reference
Accuracy
Operating Frequency Adjustable Between 50 kHz
and 500 kHz with Single Resistor
Master or Slave Frequency Synchronization
Adjustable Soft-Start
Emulated Current Mode Control Architecture
Wide Bandwidth Error Amplifier
Built-in Protection
HTSSOP-20EP (Exposed Pad)
2 Applications
Automotive
Industrial
3 Description
The LM5576 is an easy to use SIMPLE SWITCHER®
buck regulator which allows design engineers to
design and optimize a robust power supply using a
minimum set of components. Operating with an input
voltage range of 6 - 75 V, the LM5576 delivers 3 A of
continuous output current with an integrated 170 m
N-Channel
MOSFET.
The
regulator
utilizes
an
Emulated Current Mode architecture which provides
inherent line regulation, tight load transient response,
and ease of loop compensation without the usual
limitation of low-duty cycles associated with current
mode
regulators.
The
operating
frequency
is
adjustable from 50 kHz to 500 kHz to allow
optimization of size and efficiency. To reduce EMI, a
frequency synchronization pin allows multiple ICs
from the LM(2)557x family to self-synchronize or to
synchronize to an external clock. The LM5576
ensures robustness with cycle-by-cycle current limit,
short-circuit
protection,
thermal
shut-down,
and
remote shut-down. The device is available in a power
enhanced
HTSSOP-20
package
featuring
an
exposed die attach pad for thermal dissipation. The
LM5576 is supported by the full suite of WEBENCH®
On-Line design tools.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM5576
HTSSOP (20)
6.50 mm x 4.40 mm
LM5576-Q1
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Application Schematic


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