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LM5576

更新时间： 2024-12-01 12:28:19
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
30页 1076K
描述
Ultra-Wide Input Voltage Range from 6V to 75V, Adjustable Output Voltage as Low as 1.225V

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LM5576 数据手册

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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  
1
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.  
23  
•
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  
SW  
VIN  
VOUT  
SYNC  
LM5576  
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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LM5576 替代型号

型号 品牌 替代类型 描述 数据表
LM46002 TI

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