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SM72485SD/NOPB

更新时间： 2024-02-16 07:36:09
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德州仪器 - TI /
页数 文件大小 规格书
23页 1034K
描述
100V, 150 mA Constant On-Time Buck Switching Regulator

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SM72485SD/NOPB 数据手册

 浏览型号SM72485SD/NOPB的Datasheet PDF文件第2页浏览型号SM72485SD/NOPB的Datasheet PDF文件第3页浏览型号SM72485SD/NOPB的Datasheet PDF文件第4页浏览型号SM72485SD/NOPB的Datasheet PDF文件第5页浏览型号SM72485SD/NOPB的Datasheet PDF文件第6页浏览型号SM72485SD/NOPB的Datasheet PDF文件第7页 
SM72485  
www.ti.com  
SNVS697D –JANUARY 2011–REVISED APRIL 2013  
100V, 150 mA Constant On-Time Buck Switching Regulator  
Check for Samples: SM72485  
1
FEATURES  
APPLICATIONS  
2
•
•
•
•
•
•
•
•
Renewable Energy Grade  
•
•
PV Panel Smart Junction Boxes  
Operating Input Voltage Range: 6V to 95V  
Integrated 100V, N-Channel Buck Switch  
Internal Start-Up Regulator  
Non-Isolated Telecommunication Buck  
Regulator  
•
•
Secondary High Voltage Post Regulator  
+42V Automotive Systems  
No Loop Compensation Required  
Ultra-Fast Transient Response  
DESCRIPTION  
On Time Varies Inversely With Input Voltage  
The SM72485 Step Down Switching Regulator  
features all of the functions needed to implement a  
low cost, efficient, Buck bias regulator. This high  
voltage regulator contains an 100 V N-Channel Buck  
Switch. The device is easy to implement and is  
provided in the VSSOP and the thermally enhanced  
WSON package. The regulator is based on a control  
scheme using an ON time inversely proportional to  
VIN. This feature allows the operating frequency to  
remain relatively constant. The control scheme  
requires no loop compensation. An intelligent current  
limit is implemented with forced OFF time, which is  
inversely proportional to Vout. This scheme ensures  
short circuit control while providing minimum  
foldback. Other features include: Thermal Shutdown,  
VCC under-voltage lockout, Gate drive under-voltage  
lockout, Max Duty Cycle limiter, and a pre-charge  
switch.  
Operating Frequency Remains Constant With  
Varying Line Voltage and Load Current  
•
•
•
•
•
•
•
Adjustable Output Voltage From 2.5V  
Highly Efficient Operation  
Precision Internal Reference  
Low Bias Current  
Intelligent Current Limit  
Thermal Shutdown  
Package  
–
–
VSSOP  
WSON (4mm x 4mm)  
Typical Application, Basic Step-Down Regulator  
6V - 95V  
Input  
V
VCC  
C3  
VIN  
IN  
SM72485  
C1  
R
T
BST  
GND  
C4  
L1  
RT/SD  
RCL  
V
OUT  
SW  
FB  
D1  
SHUTDOWN  
R3  
R
R
FB2  
R
CL  
C2  
RTN  
GND  
FB1  
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 © 2011–2013, Texas Instruments Incorporated  
1234567...23

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SM72485SD/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
SM72485SDE/NOPB TI

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