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LM2596T-3.3 PDF预览

LM2596T-3.3

更新时间： 2024-11-17 22:25:31
品牌 Logo 应用领域
美国国家半导体 - NSC 转换器稳压器开关式稳压器或控制器电源电路开关式控制器局域网
页数 文件大小 规格书
31页 736K
描述
SIMPLE SWITCHER Power Converter 150 kHz 3A Step-Down Voltage Regulator

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中文翻译

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LM2596T-3.3 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：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.11Is Samacsys：N
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：VOLTAGE-MODE
最大输入电压：40 V最小输入电压：4.5 V
标称输入电压：12 VJESD-30 代码：R-PZFM-T5
JESD-609代码：e0湿度敏感等级：1
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-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）：260
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：173 kHz
技术：BIPOLAR温度等级：AUTOMOTIVE
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：ZIG-ZAG
处于峰值回流温度下的最长时间：40Base Number Matches：1

LM2596T-3.3 数据手册

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May 2002  
LM2596  
SIMPLE SWITCHER® Power Converter 150 kHz  
3A Step-Down Voltage Regulator  
General Description  
Features  
n 3.3V, 5V, 12V, and adjustable output versions  
The LM2596 series of regulators are monolithic integrated  
circuits that provide all the active functions for a step-down  
(buck) switching regulator, capable of driving a 3A load with  
excellent line and load regulation. These devices are avail-  
able in fixed output voltages of 3.3V, 5V, 12V, and an adjust-  
able output version.  
n Adjustable version output voltage range, 1.2V to 37V  
±
4% max over line and load conditions  
n Available in TO-220 and TO-263 packages  
n Guaranteed 3A output load current  
n Input voltage range up to 40V  
Requiring a minimum number of external components, these  
regulators are simple to use and include internal frequency  
n Requires only 4 external components  
n Excellent line and load regulation specifications  
n 150 kHz fixed frequency internal oscillator  
n TTL shutdown capability  
n Low power standby mode, IQ typically 80 µA  
n High efficiency  
†
compensation , and a fixed-frequency oscillator.  
The LM2596 series operates at a switching frequency of  
150 kHz thus allowing smaller sized filter components than  
what would be needed with lower frequency switching regu-  
lators. Available in a standard 5-lead TO-220 package with  
several different lead bend options, and a 5-lead TO-263  
surface mount package.  
n Uses readily available standard inductors  
n Thermal shutdown and current limit protection  
A standard series of inductors are available from several  
different manufacturers optimized for use with the LM2596  
series. This feature greatly simplifies the design of  
switch-mode power supplies.  
Applications  
n Simple high-efficiency step-down (buck) regulator  
n On-card switching regulators  
n Positive to negative converter  
±
Other features include a guaranteed 4% tolerance on out-  
put voltage under specified input voltage and output load  
†
Note: Patent Number 5,382,918.  
±
conditions, and 15% on the oscillator frequency. External  
shutdown is included, featuring typically 80 µA standby cur-  
rent. Self protection features include a two stage frequency  
reducing current limit for the output switch and an over  
temperature shutdown for complete protection under fault  
conditions.  
Typical Application (Fixed Output Voltage  
Versions)  
01258301  
SIMPLE SWITCHER® and Switchers Made Simple® are registered trademarks of National Semiconductor Corporation.  
© 2002 National Semiconductor Corporation  
DS012583  
www.national.com  
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