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LM5010A-Q1

更新时间： 2024-09-29 02:58:19
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德州仪器 - TI /
页数 文件大小 规格书
25页 1017K
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High-Voltage 1-A Step-Down Switching Regulator

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LM5010A-Q1 数据手册

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LM5010A  
LM5010A-Q1  
www.ti.com  
SNVS376E –OCTOBER 2005–REVISED FEBRUARY 2013  
High-Voltage 1-A Step-Down Switching Regulator  
Check for Samples: LM5010A, LM5010A-Q1  
1
FEATURES  
APPLICATIONS  
2
•
•
•
Wide 6V to 75V Input Voltage Range  
•
•
•
Non-Isolated Telecommunications Regulator  
Valley Current Limiting At 1.25A  
Secondary Side Post Regulator  
Automotive Electronics  
Programmable Switching Frequency Up To 1  
MHz  
DESCRIPTION  
•
•
•
•
•
Integrated 80V N-Channel Buck Switch  
Integrated High Voltage Bias Regulator  
No Loop Compensation Required  
Ultra-Fast Transient Response  
The LM5010A Step-Down Switching Regulator is an  
enhanced version of the LM5010 with the input  
operating range extended to 6V minimum. The  
LM5010A features all the functions needed to  
implement  
a low cost, efficient, buck regulator  
Nearly Constant Operating Frequency With  
Line and Load Variations  
capable of supplying in excess of 1A load current.  
This high voltage regulator integrates an N-Channel  
Buck Switch, and is available in thermally enhanced  
WSON-10 and HTSSOP-14 packages. The constant  
on-time regulation scheme requires no loop  
compensation resulting in fast load transient  
response and simplified circuit implementation. The  
operating frequency remains constant with line and  
load variations due to the inverse relationship  
between the input voltage and the on-time. The valley  
current limit detection is set at 1.25A. Additional  
features include: VCC under-voltage lock-out, thermal  
shutdown, gate drive under-voltage lock-out, and  
maximum duty cycle limiter.  
•
•
•
•
•
Adjustable Output Voltage  
2.5V, ±2% Feedback Reference  
Programmable Soft-Start  
Thermal Shutdown  
LM5010AQ is AEC-Q100 Grade 1 and 0  
qualified  
•
Packages  
–
–
–
WSON-10 (4 mm x 4 mm)  
HTSSOP-14  
Both Packages Have Exposed Thermal Pad  
For Improved Heat Dissipation  
Basic Step-Down Regulator  
6V - 75V  
Input  
VCC  
VIN  
C3  
C1  
R
ON  
LM5010A  
BST  
SW  
C4  
L1  
RON/SD  
V
OUT  
SHUTDOWN  
D1  
R1  
R2  
R3  
SS  
ISEN  
FB  
C2  
C6  
RTN  
SGND  
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 © 2005–2013, Texas Instruments Incorporated  
1234567...25

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LM5010A-Q1 替代型号

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