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LM3103MHX

更新时间： 2024-01-14 17:40:05
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
16页 350K
描述
SIMPLE SWITCHER㈢ Synchronous 1MHz 0.75A Step-Down Voltage Regulator

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LM3103MHX 技术参数

是否Rohs认证： 符合生命周期：Transferred
包装说明：SSOP, TSSOP16,.25Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：6.98模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：VOLTAGE-MODE最大输入电压：42 V
最小输入电压：4.5 V标称输入电压：18 V
JESD-30 代码：R-PDSO-G16JESD-609代码：e3
长度：5 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：0.75 A封装主体材料：PLASTIC/EPOXY
封装代码：SSOP封装等效代码：TSSOP16,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BUCK最大切换频率：1000 kHz
技术：MOS温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：40宽度：4.4 mm
Base Number Matches：1

LM3103MHX 数据手册

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October 2007  
LM3103  
SIMPLE SWITCHER® Synchronous 1MHz 0.75A  
Step-Down Voltage Regulator  
General Description  
Features  
The LM3103 Synchronously Rectified Buck Converter fea-  
tures all required functions to implement a highly efficient and  
cost effective buck regulator. It is capable of supplying 0.75A  
to loads with an output voltage as low as 0.6V. Dual N-Chan-  
nel synchronous MOSFET switches allow a low component  
count, thus reducing complexity and minimizing board size.  
Low component count and small solution size  
Stable with ceramic and other low ESR capacitors  
No loop compensation required  
High efficiency at a light load by DCM operation  
Pre-bias startup  
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Ultra-fast transient response  
Different from most other COT regulators, the LM3103 does  
not rely on output capacitor ESR for stability, and is designed  
to work exceptionally well with ceramic and other very low  
ESR output capacitors. It requires no loop compensation, re-  
sults in a fast load transient response and simple circuit  
implementation. The operating frequency remains nearly con-  
stant with line variations due to the inverse relationship be-  
tween the input voltage and the on-time. The operating  
frequency can be externally programmed up to 1 MHz. Pro-  
tection features include VCC under-voltage lock-out, output  
over-voltage protection, thermal shutdown, and gate drive  
under-voltage lock-out. The LM3103 is available in the ther-  
mally enhanced eTSSOP-16 package.  
Programmable soft-start  
Programmable switching frequency up to 1 MHz  
Valley current limit  
Thermal shutdown  
Output over-voltage protection  
Precision internal reference for an adjustable output  
voltage down to 0.6V  
Typical Applications  
5VDC, 12VDC, 24VDC, 12VAC, and 24VAC systems  
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Embedded Systems  
Key Specifications  
Industrial Control  
Automotive Telematics and Body Electronics  
Input voltage range 4.5V-42V  
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Point of Load Regulators  
0.75A output current  
Storage Systems  
0.6V, ±2% reference  
Broadband Infrastructure  
Integrated dual N-Channel main and synchronous  
MOSFETs  
Direct Conversion from 2/3/4 Cell Lithium Batteries  
Systems  
Thermally enhanced eTSSOP-16 package  
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Typical Application  
30029701  
SIMPLE SWITCHER® is a registered trademark of National Semiconductor Corporation  
© 2007 National Semiconductor Corporation  
300297  
www.national.com  
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