Datasheet > LM5576QMHX

LM5576QMHX

更新时间： 2024-12-02 02:58:15

品牌	Logo	应用领域
德州仪器 - TI		开关光电二极管输出元件
页数	文件大小	规格书
30页	1022K
描述
LM5576/LM5576-Q1 SIMPLE SWITCHER 75V, 3A Step-Down Switching Regulator

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LM5576QMHX 数据手册

LM5576, LM5576-Q1

www.ti.com

SNVS447I –JANUARY 2007–REVISED APRIL 2013

LM5576/LM5576-Q1 SIMPLE SWITCHER® 75V, 3A Step-Down Switching Regulator

Check for Samples: LM5576, LM5576-Q1

FEATURES

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 - 75V, the LM5576 delivers 3A of

continuous output current with an integrated 170mΩ

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 50kHz to 500kHz to allow

optimization of size and efficiency. To reduce EMI, a

frequency synchronization pin allows multiple IC’s

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.

•

LM5576-Q1 is an Automotive Grade Product

that is AEC-Q100 grade 1 Qualified (−40°C to +

125°C Operating Junction Temperature)

•

Integrated 75V, 170mΩ N-channel MOSFET

Ultra-Wide Input Voltage Range from 6V to 75V

Adjustable Output Voltage as Low as 1.225V

1.5% Feedback Reference Accuracy

Operating Frequency Adjustable Between

50kHz and 500kHz with Single Resistor

•

Master or Slave Frequency Synchronization

Adjustable Soft-Start

Emulated Current Mode Control Architecture

Wide Bandwidth Error Amplifier

Built-in Protection

Automotive Grade Product Datasheet that is

AEC-Q100 Grade 0 Qualified is Available Upon

Request.

–

(−40°C to + 150°C Operating Junction

Temperature)

APPLICATIONS

PACKAGE

•

Automotive

Industrial

•

HTSSOP-20EP (Exposed Pad)

Simplified Application Schematic

VIN

BST

VIN

VOUT

SYNC

LM5576

OUT

VCC

COMP

GND

RAMP

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.

WEBENCH is a registered trademark of Texas Instruments.

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...30

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