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LM2575M-5.0

更新时间： 2024-11-20 22:22:11
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器
页数 文件大小 规格书
27页 718K
描述
SIMPLE SWITCHER 1A Step-Down Voltage Regulator

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中文翻译

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LM2575M-5.0 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：SOIC-24Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.61其他特性：CAN ALSO CONFIGURED AS BUCK BOOST REGULATOR
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：8 V标称输入电压：12 V
JESD-30 代码：R-PDSO-G24JESD-609代码：e0
长度：15.4 mm湿度敏感等级：3
功能数量：1端子数量：24
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：3.2 A标称输出电压：5 V
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP24,.4封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：2.65 mm
子类别：Switching Regulator or Controllers最大供电电流 (Isup)：10 mA
表面贴装：YES切换器配置：BUCK
最大切换频率：63 kHz技术：BIPOLAR
温度等级：AUTOMOTIVE端子面层：Tin/Lead (Sn/Pb)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
宽度：7.5 mmBase Number Matches：1

LM2575M-5.0 数据手册

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August 2004  
LM1575/LM2575/LM2575HV  
SIMPLE SWITCHER® 1A Step-Down Voltage Regulator  
General Description  
Features  
n 3.3V, 5V, 12V, 15V, and adjustable output versions  
n Adjustable version output voltage range,  
1.23V to 37V (57V for HV version) 4% max over  
line and load conditions  
The LM2575 series of regulators are monolithic integrated  
circuits that provide all the active functions for a step-down  
(buck) switching regulator, capable of driving a 1A 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 Guaranteed 1A 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 LM2575 series offers a high-efficiency replacement for  
popular three-terminal linear regulators. It substantially re-  
duces the size of the heat sink, and in many cases no heat  
sink is required.  
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.  
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)  
01147501  
Note: Pin numbers are for the TO-220 package.  
SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation.  
© 2004 National Semiconductor Corporation  
DS011475  
www.national.com  
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