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Datasheet > 电源电路 > 开关式稳压器或控制器> LM2575HVS-ADJEP/NOPB
LM2575HVS-ADJEP/NOPB PDF预览

LM2575HVS-ADJEP/NOPB

更新时间： 2024-09-16 12:58:27
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
28页 846K
描述
IC,SMPS CONTROLLER,VOLTAGE-MODE,BIPOLAR,SIP,5PIN,PLASTIC

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中文翻译

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LM2575HVS-ADJEP/NOPB 技术参数

是否Rohs认证：符合生命周期：Obsolete
Reach Compliance Code：not_compliant风险等级：5.84
Is Samacsys：N控制模式：VOLTAGE-MODE
JESD-609代码：e3湿度敏感等级：3
端子数量：5最大输出电流：1 A
封装主体材料：PLASTIC/EPOXY封装等效代码：SMSIP5H,.6,67TB
子类别：Switching Regulator or Controllers表面贴装：YES
最大切换频率：63 kHz技术：BIPOLAR
端子面层：Matte Tin (Sn)端子节距：1.7 mm
端子位置：SINGLEBase Number Matches：1

LM2575HVS-ADJEP/NOPB 数据手册

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April 2007  
LM1575/LM2575/LM2575HV  
SIMPLE SWITCHER® 1A Step-Down Voltage Regulator  
General Description  
Features  
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.  
3.3V, 5V, 12V, 15V, and adjustable output versions  
■
■
Adjustable version output voltage range,  
1.23V to 37V (57V for HV version) ±4% max over  
line and load conditions  
Guaranteed 1A output current  
■
■
■
■
■
■
■
■
Wide input voltage range, 40V up to 60V for HV version  
Requiring a minimum number of external components, these  
regulators are simple to use and include internal frequency  
compensation and a fixed-frequency oscillator.  
Requires only 4 external components  
52 kHz fixed frequency internal oscillator  
TTL shutdown capability, low power standby mode  
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.  
High efficiency  
Uses readily available standard inductors  
Thermal shutdown and current limit protection  
P+ Product Enhancement tested  
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 pow-  
er supplies.  
■
Applications  
Other features include a guaranteed ±4% tolerance on output  
voltage within specified input voltages and output load con-  
ditions, and ±10% on the oscillator frequency. External shut-  
down is included, featuring 50 μA (typical) standby current.  
The output switch includes cycle-by-cycle current limiting, as  
well as thermal shutdown for full protection under fault con-  
ditions.  
Simple high-efficiency step-down (buck) regulator  
■
■
■
■
Efficient pre-regulator for linear regulators  
On-card switching regulators  
Positive to negative converter (Buck-Boost)  
Typical Application  
(Fixed Output Voltage Versions)  
1147501  
Note: Pin numbers are for the TO-220 package.  
SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation  
© 2007 National Semiconductor Corporation  
11475  
www.national.com  
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