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LM5017MRX_NOPB PDF预览

LM5017MRX_NOPB

更新时间: 2024-11-16 12:09:47
品牌 Logo 应用领域
德州仪器 - TI 稳压器
页数 文件大小 规格书
19页 1024K
描述
600mA Constant On-Time Synchronous Buck Regulator

LM5017MRX_NOPB 数据手册

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LM5017  
www.ti.com  
SNVS783D JANUARY 2012REVISED MAY 2013  
LM5017 100V, 600mA Constant On-Time Synchronous Buck Regulator  
Check for Samples: LM5017  
1
FEATURES  
PACKAGES  
2
Wide 9V to 100V Input Range  
Integrated 100V, High and Low Side Switches  
No Schottky Required  
WSON-8  
SO PowerPAD-8  
DESCRIPTION  
Constant On-time Control  
The LM5017 is a 100V, 600mA synchronous step-  
down regulator with integrated high side and low side  
MOSFETs. The constant-on-time (COT) control  
scheme employed in the LM5017 requires no loop  
compensation, provides excellent transient response,  
and enables very low step-down ratios. The on-time  
varies inversely with the input voltage resulting in  
nearly constant frequency over the input voltage  
range. A high voltage startup regulator provides bias  
power for internal operation of the IC and for  
integrated gate drivers.  
No Loop Compensation Required  
Ultra-Fast Transient Response  
Nearly Constant Operating Frequency  
Intelligent Peak Current Limit  
Adjustable Output Voltage from 1.225V  
Precision 2% Feedback Reference  
Frequency Adjustable to 1MHz  
Adjustable Undervoltage Lockout (UVLO)  
Remote Shutdown  
A peak current limit circuit protects against overload  
conditions. The undervoltage lockout (UVLO) circuit  
allows the input undervoltage threshold and  
hysteresis to be independently programmed. Other  
protection features include thermal shutdown and  
bias supply undervoltage lockout (VCC UVLO).  
Thermal Shutdown  
APPLICATIONS  
Smart Power Meters  
Telecommunication Systems  
Automotive Electronics  
Isolated Bias Supply  
The LM5017 is available in WSON-8 and SO  
PowerPAD-8 plastic packages.  
Typical Application  
LM5017  
9V-100V  
VIN  
7
BST  
2
4
+
V
IN  
L1  
VOUT  
C
BST  
8
+
SW  
C
IN  
RON  
R
UV2  
C
VCC  
R
ON  
R
FB2  
VCC  
FB  
3
R
C
6
5
UVLO  
SD  
+
R
UV1  
RTN  
C
OU  
T
R
FB1  
1
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.  
All trademarks are the property of their respective owners.  
2
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 © 2012–2013, Texas Instruments Incorporated  

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