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LM2576SX-3.3 PDF预览

LM2576SX-3.3

更新时间： 2024-11-01 12:02:07
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德州仪器 - TI 稳压器
页数 文件大小 规格书
37页 3998K
描述
SIMPLE SWITCHER® 3A Step-Down Voltage Regulator

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LM2576SX-3.3 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：D2PAK
包装说明：TO-263, SMSIP5H,.6,67TB针数：4
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.09
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：6 V标称输入电压：12 V
JESD-30 代码：R-PSSO-G5JESD-609代码：e0
长度：10.16 mm湿度敏感等级：3
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：7.5 A标称输出电压：3.3 V
封装主体材料：PLASTIC/EPOXY封装代码：TO-263
封装等效代码：SMSIP5H,.6,67TB封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：235
认证状态：Not Qualified座面最大高度：4.8 mm
子类别：Switching Regulator or Controllers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：1.7 mm端子位置：SINGLE
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：8.635 mm
Base Number Matches：1

LM2576SX-3.3 数据手册

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LM2576, LM2576HV  
www.ti.com  
SNVS107C –JUNE 1999–REVISED APRIL 2013  
®
LM2576/LM2576HV Series SIMPLE SWITCHER 3A Step-Down Voltage Regulator  
Check for Samples: LM2576, LM2576HV  
1
FEATURES  
DESCRIPTION  
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 available in fixed output voltages  
of 3.3V, 5V, 12V, 15V, and an adjustable output  
version.  
23  
•
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  
•
•
Specified 3A 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  
The LM2576 series offers  
a
high-efficiency  
TTL Shutdown Capability, Low Power Standby  
Mode  
replacement for popular three-terminal linear  
regulators. It substantially reduces the size of the  
heat sink, and in some cases no heat sink is  
required.  
•
•
•
High Efficiency  
Uses Readily Available Standard Inductors  
Thermal Shutdown and Current Limit  
Protection  
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.  
•
P+ Product Enhancement Tested  
APPLICATIONS  
Other features include a specified ±4% tolerance on  
output voltage within specified input voltages and  
output load conditions, and ±10% on the oscillator  
frequency. External shutdown 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  
conditions.  
•
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)  
Figure 1.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
SIMPLE SWITCHER is a registered trademark of Texas Instruments.  
2
3
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 1999–2013, Texas Instruments Incorporated  
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LM2576SX-3.3 替代型号

型号 品牌 替代类型 描述 数据表
LM2576SX-3.3/NOPB TI

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