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LM2574DW-ADJR2

更新时间： 2024-10-27 03:01:31
品牌 Logo 应用领域
安森美 - ONSEMI 稳压器开关光电二极管
页数 文件大小 规格书
28页 268K
描述
0.5 A, Adjustable Output Voltage, Step-Down Switching Regulator

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中文翻译

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LM2574DW-ADJR2 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：SOIC包装说明：SOP, SOP16,.4
针数：16Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.08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：7 V
标称输入电压：12 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e0长度：10.3 mm
湿度敏感等级：1功能数量：1
端子数量：16最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：1.8 A
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP16,.4封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：240
认证状态：Not Qualified座面最大高度：2.65 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：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：7.5 mm
Base Number Matches：1

LM2574DW-ADJR2 数据手册

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LM2574  
0.5 A, Adjustable Output  
Voltage, Step-Down  
Switching Regulator  
The LM2574 series of regulators are monolithic integrated circuits  
ideally suited for easy and convenient design of a step–down  
switching regulator (buck converter). All circuits of this series are  
capable of driving a 0.5 A load with excellent line and load regulation.  
These devices are available in fixed output voltages of 3.3 V, 5.0 V,  
12 V, 15 V, and an adjustable output version.  
These regulators were designed to minimize the number of external  
components to simplify the power supply design. Standard series of  
inductors optimized for use with the LM2574 are offered by several  
different inductor manufacturers.  
http://onsemi.com  
SO–16W  
DW SUFFIX  
CASE 751G  
16  
1
Since the LM2574 converter is a switch–mode power supply, its  
efficiency is significantly higher in comparison with popular  
three–terminal linear regulators, especially with higher input voltages.  
In most cases, the power dissipated by the LM2574 regulator is so low,  
that the copper traces on the printed circuit board are normally the only  
heatsink needed and no additional heatsinking is required.  
PDIP–8  
N SUFFIX  
CASE 626  
8
1
The LM2574 features include a guaranteed ±4% tolerance on output  
voltage within specified input voltages and output load conditions, and  
±10% on the oscillator frequency (±2% over 0°C to +125°C). External  
shutdown is included, featuring 60 µA (typical) standby current. The  
output switch includes cycle–by–cycle current limiting, as well as  
thermal shutdown for full protection under fault conditions.  
PIN CONNECTIONS  
*
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
*
*
*
FB  
Output  
*
Sig Gnd  
Features  
V
ON/OFF  
in  
Pwr Gnd  
*
*
*
• 3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions  
• Adjustable Version Output Voltage Range, 1.23 to 37 V ±4% max  
over Line and Load Conditions  
*
*
(Top View)  
• Guaranteed 0.5 A Output Current  
• Wide Input Voltage Range: 4.75 to 40 V  
• Requires Only 4 External Components  
• 52 kHz Fixed Frequency Internal Oscillator  
• TTL Shutdown Capability, Low Power Standby Mode  
• High Efficiency  
1
2
3
4
8
7
6
5
*
FB  
Sig Gnd  
ON/OFF  
Output  
*
V
Pwr Gnd  
in  
(Top View)  
• Uses Readily Available Standard Inductors  
• Thermal Shutdown and Current Limit Protection  
* No internal connection, but should be soldered to  
* PC board for best heat transfer.  
Applications  
• Simple and High–Efficiency Step–Down (Buck) Regulators  
• Efficient Pre–regulator for Linear Regulators  
• On–Card Switching Regulators  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 24 of this data sheet.  
• Positive to Negative Converters (Buck–Boost)  
• Negative Step–Up Converters  
• Power Supply for Battery Chargers  
DEVICE MARKING INFORMATION  
See general marking information in the device marking  
section on page 24 of this data sheet.  
Semiconductor Components Industries, LLC, 2002  
1
Publication Order Number:  
February, 2002 – Rev. 5  
LM2574/D  
1234567...28

中文翻译

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LM2574DW-ADJR2 替代型号

型号 品牌 替代类型 描述 数据表
LM2574DW-ADJR2G ONSEMI

完全替代

 0.5 A, Adjustable Output Voltage, Step−Down Switching Regulator
LM2574DW-ADJ ONSEMI

完全替代

 EASY SWITCHER 0.5 A STEP-DOWN VOLTAGE REGULATOR

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