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LM2575TV

更新时间： 2024-11-15 11:34:07
品牌 Logo 应用领域
韩国泰进 - HTC 稳压器开关
页数 文件大小 规格书
13页 627K
描述
1A, 52kHz, Step-Down Switching Regulator

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中文翻译

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LM2575TV 数据手册

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1A, 52kHz, Step-Down Switching Regulator  
LM2575  
FEATURES  
3.3V, 5.0V, 12V, 15V, and Adjustable Output Versions  
Adjustable Version Output Voltage Range, 1.23 to 37V  
+/- 4% AG10 Maximum Over Line and Load Conditions  
Guaranteed 1A Output Current  
TO-220 PKG  
Wide Input Voltage Range  
Requires Only 4 External Components  
52kHz Fixed Frequency Internal Oscillator  
TTL Shutdown Capability, Low Power Standby Mode  
High Efficiency  
1
5
TO-220V PKG  
Uses Readily Available Standard Inductors  
Thermal Shutdown and Current Limit Protection  
Moisture Sensitivity Level 3  
1
5
Applications  
Simple High-Efficiency Step-Down(Buck) Regulator  
Efficient Pre-Regulator for Linear Regulators  
On-Card Switching Regulators  
TO-263 PKG  
Positive to Negative Converter(Buck-Boost)  
Negative Step-Up Converters  
1
5
Power Supply for Battery Chargers  
1. Vin 2. Output 3. Ground  
4. Feedback 5. On/Off  
DESCRIPTION  
The LM2575 series of regulators are monolithic integrated  
ORDERING INFORMATION  
Device  
LM2575T-X.X  
Marking  
Package  
TO-220  
TO-220V  
TO-263  
circuits ideally suited for easy and convenient design of a  
step-down switching regualtor(buck converter).  
All circuits of this series are capable of driving a 1A load  
with excellent line and load regulation. These devices are  
available in fixed output voltages of 3.3V, 5.0V,12V, 15V,  
and an adjustable output version.  
LM2575T-X.X  
LM2575TV-X.X LM2575T-X.X  
LM2575R LM2575R-X.X  
These regulatiors were designed to minimize the number of externalcomponents to simplify the  
power supply design. Standard series of inductors optimized for use with the LM2575 are offered  
by several different inductor manufacturers.  
Since the LM2575 converter is a switch-mode power supply, its efficiency is significantly higher in  
comparison with popular three-terminal limear reguators, especially with higher input voltages.  
In many cases, the power dissipated is so low that no heatsink is required or its size could  
be reduced dramatically. A standard series of inductors optimized for use with the LM2575 are  
available from several different manufacturers. This feature greatly simplifies the design of  
switch-mode power supplies. The LM2575 features include a guaranteed +/- 4% tolerance  
on output voltage within specified input voltages and output load conditions, and +/-10% on the  
oscillator frequency (+/- 2% over 0℃ to 125 ℃).  
External shutdown is included, featuring 80 ㎂(typical) standby current. The output switch includes  
cycle-bycycle current limiting, as well as thermal shutdown for full protection under fault conditions.  
2008 - Ver. 1.0  
HTC  
− 1 −  
1234567...13

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