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LM2576T-12FLOWLB03 PDF预览

LM2576T-12FLOWLB03

更新时间： 2024-01-20 21:06:41
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22页 618K
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LM2576T-12FLOWLB03 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：TO-220, ZIP5,.15,.2,67TBReach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.56模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：40 V最小输入电压：15 V
JESD-30 代码：R-PSFM-T5JESD-609代码：e0
功能数量：1端子数量：5
最大输出电流：3.5 A标称输出电压：12 V
封装主体材料：PLASTIC/EPOXY封装代码：TO-220
封装等效代码：ZIP5,.15,.2,67TB封装形状：RECTANGULAR
封装形式：FLANGE MOUNT峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified子类别：Switching Regulator or Controllers
最大供电电流 (Isup)：10 mA表面贴装：NO
切换器配置：BUCK最大切换频率：52 kHz
技术：BIPOLAR端子面层：Tin/Lead (Sn/Pb)
端子形式：THROUGH-HOLE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：NOT SPECIFIED
Base Number Matches：1

LM2576T-12FLOWLB03 数据手册

 浏览型号LM2576T-12FLOWLB03的Datasheet PDF文件第2页浏览型号LM2576T-12FLOWLB03的Datasheet PDF文件第3页浏览型号LM2576T-12FLOWLB03的Datasheet PDF文件第4页浏览型号LM2576T-12FLOWLB03的Datasheet PDF文件第5页浏览型号LM2576T-12FLOWLB03的Datasheet PDF文件第6页浏览型号LM2576T-12FLOWLB03的Datasheet PDF文件第7页 
June 1999  
LM2576/LM2576HV Series  
SIMPLE SWITCHER® 3A Step-Down Voltage Regulator  
General Description  
Features  
n 3.3V, 5V, 12V, 15V, and adjustable output versions  
The LM2576 series of regulators are monolithic integrated  
circuits that provide all the active functions for a step-down  
(buck) switching regulator, capable of driving 3A load with  
excellent line and load regulation. These devices are avail-  
able in fixed output voltages of 3.3V, 5V, 12V, 15V, and an  
adjustable output version.  
n Adjustable version output voltage range,  
1.23V to 37V (57V for HV version) 4% max over  
line and load conditions  
n Guaranteed 3A output current  
n Wide input voltage range, 40V up to 60V for  
HV version  
n Requires only 4 external components  
n 52 kHz fixed frequency internal oscillator  
n TTL shutdown capability, low power standby mode  
n High efficiency  
n Uses readily available standard inductors  
n Thermal shutdown and current limit protection  
n P+ Product Enhancement tested  
±
Requiring a minimum number of external components, these  
regulators are simple to use and include internal frequency  
compensation and a fixed-frequency oscillator.  
The LM2576 series offers a high-efficiency replacement for  
popular three-terminal linear regulators. It substantially re-  
duces the size of the heat sink, and in some cases no heat  
sink is required.  
A standard series of inductors optimized for use with the  
LM2576 are available from several different manufacturers.  
This feature greatly simplifies the design of switch-mode  
power supplies.  
Applications  
n Simple high-efficiency step-down (buck) regulator  
n Efficient pre-regulator for linear regulators  
n On-card switching regulators  
±
Other features include a guaranteed 4% tolerance on out-  
put voltage within specified input voltages and output load  
±
conditions, and 10% on the oscillator frequency. External  
shutdown is included, featuring 50 µA (typical) standby cur-  
rent. The output switch includes cycle-by-cycle current limit-  
ing, as well as thermal shutdown for full protection under  
fault conditions.  
n Positive to negative converter (Buck-Boost)  
Typical Application (Fixed Output Voltage Versions)  
DS011476-1  
FIGURE 1.  
SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation.  
© 1999 National Semiconductor Corporation  
DS011476  
www.national.com  
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