LM5574

更新时间： 2024-11-30 12:09:51

品牌	Logo	应用领域
德州仪器 - TI		稳压器开关
页数	文件大小	规格书
28页	881K
描述
LM5574/LM5574-Q1 SIMPLE SWITCHERÂ® 75V, 0.5A Step-Down Switching Regulator

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LM5574 数据手册

LM5574, LM5574-Q1

www.ti.com

SNVS478F –JANUARY 2007–REVISED APRIL 2013

LM5574/LM5574-Q1 SIMPLE SWITCHER® 75V, 0.5A Step-Down Switching Regulator

Check for Samples: LM5574, LM5574-Q1

FEATURES

DESCRIPTION

The LM5574 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 LM5574 delivers 0.5A of

continuous output current with an integrated 750mΩ

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 LM5574

ensures robustness with cycle-by-cycle current limit,

short-circuit protection, thermal shut-down, and

remote shut-down. The device is available in a

TSSOP-16 package. The LM5574 is supported by the

full suite of WEBENCH^®On-Line design tools.

•

LM5574-Q1 is an Automotive Grade Product

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

125°C Operating Junction Temperature)

•

Integrated 75V, 750mΩ 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)

PACKAGE

•

TSSOP-16

APPLICATIONS

•

Automotive

Industrial

Simplified Application Schematic

VIN

BST

VIN

VOUT

LM5574

SYNC

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...28

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与LM5574相关器件

型号	品牌	获取价格	描述	数据表
LM5574_09	NSC	获取价格	SIMPLE SWITCHER 75V, 0.5A Step-Down Switching Regulator
LM5574MT	NSC	获取价格	75V, 0.5A Step-Down Switching Regulator
LM5574MT	TI	获取价格	LM5574/LM5574-Q1 SIMPLE SWITCHERÂ® 75V, 0.5A
LM5574MT/NOPB	TI	获取价格	75V、0.5A 降压开关稳压器 \| PW \| 16 \| -40 to 125
LM5574MTX	TI	获取价格	LM5574/LM5574-Q1 SIMPLE SWITCHERÂ® 75V, 0.5A
LM5574MTX	NSC	获取价格	75V, 0.5A Step-Down Switching Regulator
LM5574MTX/NOPB	TI	获取价格	75V、0.5A 降压开关稳压器 \| PW \| 16 \| -40 to 125
LM5574Q0MT	TI	获取价格	LM5574/LM5574-Q1 SIMPLE SWITCHERÂ® 75V, 0.5A
LM5574Q0MT/NOPB	TI	获取价格	75V、0.5A 降压开关稳压器 \| PW \| 16
LM5574Q0MTX	TI	获取价格	LM5574/LM5574-Q1 SIMPLE SWITCHERÂ® 75V, 0.5A

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