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LM5010SD/NOPB

更新时间： 2024-11-17 02:58:19
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High-Voltage 1-A Step-Down Switching Regulator

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LM5010SD/NOPB 数据手册

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LM5010  
www.ti.com  
SNVS307F –SEPTEMBER 2004–REVISED FEBRUARY 2013  
High-Voltage 1-A Step-Down Switching Regulator  
Check for Samples: LM5010  
1
FEATURES  
APPLICATIONS  
2
•
•
•
•
•
•
•
•
Input Voltage Range: 8V to 75V  
Valley Current Limit At 1.25A  
•
•
High Efficiency Point-Of-Load (POL) Regulator  
Non-Isolated Telecommunications Buck  
Regulator  
Switching Frequency Can Exceed 1 MHz  
Integrated N-Channel Buck Switch  
Integrated Startup Regulator  
•
•
Secondary High Voltage Post Regulator  
Automotive Systems  
No Loop Compensation Required  
Ultra-Fast Transient Response  
DESCRIPTION  
The LM5010 Step Down Switching Regulator features  
all the functions needed to implement a low cost,  
efficient, buck bias regulator capable of supplying in  
excess of 1A load current. This high voltage regulator  
contains an N-Channel Buck Switch, and is available  
in thermally enhanced 10-pin WSON and 14-pin  
HTSSOP packages. The hysteretic regulation  
scheme requires no loop compensation, results in  
fast load transient response, and simplifies 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  
lockout, thermal shutdown, gate drive under-voltage  
lockout, and maximum duty cycle limiter.  
Operating Frequency Remains Constant With  
Load and Line Variations  
•
•
•
•
•
Maximum Duty Cycle Limited During Startup  
Adjustable Output Voltage  
Precision 2.5V Feedback Reference  
Thermal shutdown  
Packages  
–
–
–
10-Pin WSON (4 mm x 4 mm)  
14-Pin HTSSOP  
Both Packages Have Exposed Thermal Pad  
For Improved Heat Dissipation  
DEVICE INFORMATION  
8V - 75V  
Input  
V
CC  
V
IN  
C3  
C1  
R
ON  
LM5010  
BST  
C4  
L1  
R
ON  
/ SD  
V
OUT  
SHUTDOWN  
SW  
D1  
R1  
R2  
C2  
SS  
I
SEN  
C6  
FB  
RTN  
S
GND  
Figure 1. Basic Step-Down Regulator  
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.  
2
All 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 © 2004–2013, Texas Instruments Incorporated  
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LM5010SD/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM5010SDX/NOPB TI

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