5秒后页面跳转
LM2576WU-TR PDF预览

LM2576WU-TR

更新时间: 2024-01-21 10:17:01
品牌 Logo 应用领域
美国微芯 - MICROCHIP 开关
页数 文件大小 规格书
9页 62K
描述
7.5A SWITCHING REGULATOR, 63kHz SWITCHING FREQ-MAX, PSSO5

LM2576WU-TR 技术参数

是否Rohs认证: 符合生命周期:Active
包装说明:TO-263,Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
Factory Lead Time:7 weeks风险等级:1.58
其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM 1.23V TO 37V模拟集成电路 - 其他类型:SWITCHING REGULATOR
最大输入电压:40 V最小输入电压:4 V
标称输入电压:12 VJESD-30 代码:R-PSSO-G5
JESD-609代码:e3长度:10.287 mm
湿度敏感等级:1功能数量:1
端子数量:5最高工作温度:85 °C
最低工作温度:-40 °C最大输出电流:7.5 A
封装主体材料:PLASTIC/EPOXY封装代码:TO-263
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):245认证状态:Not Qualified
座面最大高度:4.59 mm表面贴装:YES
切换器配置:BUCK最大切换频率:63 kHz
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn) - annealed
端子形式:GULL WING端子节距:1.7 mm
端子位置:SINGLE处于峰值回流温度下的最长时间:40
宽度:9.144 mmBase Number Matches:1

LM2576WU-TR 数据手册

 浏览型号LM2576WU-TR的Datasheet PDF文件第2页浏览型号LM2576WU-TR的Datasheet PDF文件第3页浏览型号LM2576WU-TR的Datasheet PDF文件第4页浏览型号LM2576WU-TR的Datasheet PDF文件第5页浏览型号LM2576WU-TR的Datasheet PDF文件第6页浏览型号LM2576WU-TR的Datasheet PDF文件第7页 
LM2576  
52kHz Simple 3A Buck Regulator  
General Description  
Features  
The LM2576 series of monolithic integrated circuits provide  
all the active functions for a step-down (buck) switching  
regulator.Fixedversionsareavailablewitha3.3V,5V,or12V  
fixed output. Adjustable versions have an output voltage  
rangefrom1.23Vto37V. Bothversionsarecapableofdriving  
a 3A load with excellent line and load regulation.  
• 3.3V, 5V, 12V, and adjustable output versions  
• Voltage over specified line and load conditions:  
Fixed version: ±3% max. output voltage  
Adjustable version: ±2% max. feedback voltage  
• Guaranteed 3A output current  
• Wide input voltage range:  
4V to 40V  
• Wide output voltage range  
1.23V to 37V  
These regulators are simple to use because they require a  
minimumnumberofexternalcomponentsandincludeinternal  
frequency compensation and a fixed-frequency oscillator.  
The LM2576 series offers a high efficiency replacement for  
popular three-terminal adjustable linear regulators. It  
substantially reduces the size of the heat sink, and in many  
cases no heat sink is required.  
• Requires only 4 external components  
• 52kHz fixed frequency internal oscillator  
• Low power standby mode I typically < 200µA  
Q
• 80% efficiency (adjustable version typically > 80%)  
• Uses readily available standard inductors  
• Thermal shutdown and current limit protection  
• 100% electrical thermal limit burn-in  
Astandardseriesofinductorsavailablefromseveraldifferent  
manufacturers are ideal for use with the LM2576 series. This  
feature greatly simplifies the design of switch-mode power  
supplies.  
The feedback voltage is guaranteed to ±2% tolerance for  
adjustable versions, and the output voltage is guaranteed to  
±3% for fixed versions, within specified input voltages and  
outputloadconditions.Theoscillatorfrequencyisguaranteed  
to ±10%. External shutdown is included, featuring less than  
200µA standby current. The output switch includes cycle-by-  
cycle current limiting and thermal shutdown for full protection  
under fault conditions.  
Applications  
• Simple high-efficiency step-down (buck) regulator  
• Efficient pre-regulator for linear regulators  
• On-card switching regulators  
• Positive to negative converter (inverting Buck-Boost)  
• Isolated Flyback Converter using minimum number of  
external components  
• Negative Boost Converter  
Typical Applications  
7V40V  
7V40V  
Unregulated  
DC Input  
Unregulated  
DC Input  
+5V, 1A  
Regulated  
Output  
+5V, 1A  
Regulated  
Output  
4
4
Feedback  
Feedback  
1
1
LM2575-5.0  
LM2575  
5
L1  
330µH  
D1  
L1  
330µH  
D1  
Output  
2
Output  
2
+VIN  
+VIN  
+
+
+
+
R2 3.09k  
R1 1k  
3
5
3
C
C
IN  
IN  
Gnd On/Off  
Gnd On/Off  
COUT  
330µF  
COUT  
330µF  
100µF  
100µF  
1N5822  
1N5822  
Note: Pin numbers are for TO-220 Package  
Note: Pin numbers are for TO-220 Package  
R2  
VOUT = 1.23 1 +  
( )  
R1  
Fixed Regulator in Typical Application  
Adjustable Regulator in Fixed Output Application  
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com  
August 2005  
1
M9999-082605-B  

与LM2576WU-TR相关器件

型号 品牌 获取价格 描述 数据表
LM2577 NSC

获取价格

SIMPLE SWITCHER Step-Up Voltage Regulator
LM2577 TI

获取价格

SIMPLE SWITCHER® Step-Up Voltage Regulator
LM2577-12 NSC

获取价格

SIMPLE SWITCHER Step-Up Voltage Regulator
LM2577-15 NSC

获取价格

SIMPLE SWITCHER Step-Up Voltage Regulator
LM2577-ADJ NSC

获取价格

SIMPLE SWITCHER Step-Up Voltage Regulator
LM2577-ADJMDC NSC

获取价格

暂无描述
LM2577-ADJMWC TI

获取价格

暂无描述
LM2577M-12 NSC

获取价格

SIMPLE SWITCHER Step-Up Voltage Regulator
LM2577M-15 NSC

获取价格

SIMPLE SWITCHER Step-Up Voltage Regulator
LM2577M-15/NOPB TI

获取价格

6A SWITCHING REGULATOR, 62kHz SWITCHING FREQ-MAX, PDSO24, 0.300 INCH, SO-24