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LM2594M-ADJ PDF预览

LM2594M-ADJ

更新时间： 2024-09-15 22:55:43
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光电二极管PC
页数 文件大小 规格书
28页 742K
描述
SIMPLE SWITCHER Power Converter 150 kHz 0.5A Step-Down Voltage Regulator

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中文翻译

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LM2594M-ADJ 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：0.150 INCH, PLASTIC, SO-8Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.07Is Samacsys：N
其他特性：ALSO OPERATES IN ADJUSTABLE MODE FROM 1.2V TO 37V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：4.5 V
标称输入电压：12 VJESD-30 代码：R-PDSO-G8
JESD-609代码：e0长度：4.9 mm
湿度敏感等级：1功能数量：1
端子数量：8最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：1.4 A
标称输出电压：1.23 V封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP8,.25
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：1.75 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：173 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：30宽度：3.9 mm
Base Number Matches：1

LM2594M-ADJ 数据手册

 浏览型号LM2594M-ADJ的Datasheet PDF文件第2页浏览型号LM2594M-ADJ的Datasheet PDF文件第3页浏览型号LM2594M-ADJ的Datasheet PDF文件第4页浏览型号LM2594M-ADJ的Datasheet PDF文件第5页浏览型号LM2594M-ADJ的Datasheet PDF文件第6页浏览型号LM2594M-ADJ的Datasheet PDF文件第7页 
December 1999  
LM2594/LM2594HV  
SIMPLE SWITCHER® Power Converter 150 kHz 0.5A  
Step-Down Voltage Regulator  
The LM2594HV is for applications requiring an input voltage  
up to 60V.  
General Description  
The LM2594/LM2594HV series of regulators are monolithic  
integrated circuits that provide all the active functions for a  
step-down (buck) switching regulator, capable of driving a  
0.5A load with excellent line and load regulation. These de-  
vices are available in fixed output voltages of 3.3V, 5V, 12V,  
and an adjustable output version, and are packaged in a  
8-lead DIP and a 8-lead surface mount package.  
Features  
n 3.3V, 5V, 12V, and adjustable output versions  
n Adjustable version output voltage range, 1.2V to 37V  
(57V for the HV version) 4% max over line and load  
conditions  
±
n Available in 8-pin surface mount and DIP-8 package  
n Guaranteed 0.5A output current  
n Input voltage range up to 60V  
Requiring a minimum number of external components, these  
regulators are simple to use and feature internal frequency  
†
compensation , a fixed-frequency oscillator, and improved  
line and load regulation specifications.  
n Requires only 4 external components  
n 150 kHz fixed frequency internal oscillator  
n TTL Shutdown capability  
n Low power standby mode, IQ typically 85 µA  
n High Efficiency  
The LM2594/LM2594HV series operates at a switching fre-  
quency of 150 kHz thus allowing smaller sized filter compo-  
nents than what would be needed with lower frequency  
switching regulators. Because of its high efficiency, the cop-  
per traces on the printed circuit board are normally the only  
heat sinking needed.  
n Uses readily available standard inductors  
n Thermal shutdown and current limit protection  
A standard series of inductors (both through hole and sur-  
face mount types) are available from several different manu-  
facturers optimized for use with the LM2594/LM2594HV se-  
ries. 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 under all conditions of input voltage and output  
n Positive to Negative convertor  
±
load conditions, and 15% on the oscillator frequency. Ex-  
ternal shutdown is included, featuring typically 85 µA  
standby current. 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)  
DS012439-1  
™
SIMPLE SWITCHER and Switchers Made Simple are registered trademarks of National Semiconductor Corporation.  
© 1999 National Semiconductor Corporation  
DS012439  
www.national.com  
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