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LM2575S-15EP PDF预览

LM2575S-15EP

更新时间： 2024-09-16 13:09:19
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
IC 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5, TO-220, 5 PIN, Switching Regulator or Controller

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LM2575S-15EP 技术参数

生命周期：Transferred包装说明：,
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.54
Is Samacsys：N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：60 V最小输入电压：8 V
标称输入电压：12 VJESD-30 代码：R-PSSO-G5
长度：10.16 mm功能数量：1
端子数量：5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
封装主体材料：PLASTIC/EPOXY封装形状：RECTANGULAR
封装形式：SMALL OUTLINE认证状态：Not Qualified
座面最大高度：4.65 mm表面贴装：YES
切换器配置：BUCK最大切换频率：63 kHz
温度等级：AUTOMOTIVE端子形式：GULL WING
端子节距：1.7 mm端子位置：SINGLE
宽度：8.635 mmBase Number Matches：1

LM2575S-15EP 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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