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LM5574Q0MT PDF预览

LM5574Q0MT

更新时间： 2024-09-17 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 SWITCHER® 75V, 0.5A Step-Down Switching Regulator

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LM5574Q0MT 数据手册

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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  
1
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.  
23  
•
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  
SW  
VIN  
VOUT  
LM5574  
SYNC  
SD  
IS  
OUT  
FB  
RT  
VCC  
SS  
COMP  
GND  
RAMP  
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.  
WEBENCH is a registered trademark of Texas Instruments.  
2
3
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.  
Copyright © 2007–2013, Texas Instruments Incorporated  
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 		75V、0.5A 降压开关稳压器 | PW | 16
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LM5574QMT/NOPB TI

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 		75V、0.5A 降压开关稳压器 | PW | 16 | -40 to 125
LM5574QMTX NSC

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 		SIMPLE SWITCHER 75V, 0.5A Step-Down Switching Regulator
LM5574QMTX TI

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 		LM5574/LM5574-Q1 SIMPLE SWITCHER® 75V, 0.5A
LM5574QMTX/NOPB NSC

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 		IC SWITCHING REGULATOR, 545 kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16, Switching Regulator

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