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LM2596TV-3.3 PDF预览

LM2596TV-3.3

更新时间： 2024-11-15 11:34:11
品牌 Logo 应用领域
其他 - ETC 稳压器开关
页数 文件大小 规格书
11页 693K
描述
3.0A, 150Khz, Step-Down Switching Regulator

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LM2596TV-3.3 数据手册

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LM2596  
3.0A, 150Khz, Step-Down Switching Regulator  
FEATURES  
3.3V, 5.0V, 12V, 15V, and Adjustable Output Versions  
Adjustable Version Output Voltage Range, 1.23 to 37V  
+/- 4%. Maximum Over Line and Load Conditions  
Guaranteed 3.0A Output Current  
TO-220  
Wide Input Voltage Range  
Requires Only 4 External Components  
150Khz Fixed Frequency Internal Oscillator  
TTL Shutdown Capability, Low Power Standby Mode  
High Efficiency  
TO-220V  
Uses Readily Available Standard Inductors  
Thermal Shutdown and Current Limit Protection  
Moisture Sensitivity Level(MSL) Equals1  
TO-263(D2)  
Applications  
Simple High-Efficiency Step-Down(Buck) Regulator  
Efficient Pre-Regulator for Linear Regulators  
On-Card Switching Regulators  
Positive to Negative Converter(Buck-Boost)  
Negative Step-Up Converters  
1. Vin  
2. Output  
3. Ground  
4. Feedback  
5. On/Off  
Power Supply for Battery Chargers  
DESCRIPTION  
ORDERING INFORMATION  
The LM2596 series of regulators are monolithic integrated  
Device  
LM2596T-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 3.0A 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.  
LM2596T-X.X  
LM2596TV-X.X LM2596T-X.X  
LM2596R LM2596R-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 LM2576 are offered  
by several different inductor manufacturers.  
Since the LM2596 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 LM2596 are  
available from several different manufacturers. This feature greatly simplifies the design of  
switch-mode power supplies. The LM2596 features include a guaranteed +/- 4% tolerance  
on output voltage within specified input voltages and output load conditions, and +/-15% on the  
oscillator frequency (+/- 2% over 0oC to 125 oC).  
External shutdown is included, featuring 80 uA(typical) standby current. The output switch includes  
cycle-bycycle current limiting, as well as thermal shutdown for full protection under fault conditions.  
HTC  
1
Oct 2004 - Rev 0  
1234567...11

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