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LM20133MHE PDF预览

LM20133MHE

更新时间： 2024-11-09 04:20:15
品牌 Logo 应用领域
美国国家半导体 - NSC 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
页数 文件大小 规格书
22页 708K
描述
3A, PowerWise㈢ Synchronous Buck Regulator with Input Synchronization

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LM20133MHE 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：HSSOP, TSSOP16,.25Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.17模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：5.5 V最小输入电压：2.95 V
标称输入电压：5 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e0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：5.7 A
封装主体材料：PLASTIC/EPOXY封装代码：HSSOP
封装等效代码：TSSOP16,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, 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：460 kHz温度等级：AUTOMOTIVE
端子面层：Tin/Lead (Sn85Pb15)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

LM20133MHE 数据手册

 浏览型号LM20133MHE的Datasheet PDF文件第2页浏览型号LM20133MHE的Datasheet PDF文件第3页浏览型号LM20133MHE的Datasheet PDF文件第4页浏览型号LM20133MHE的Datasheet PDF文件第5页浏览型号LM20133MHE的Datasheet PDF文件第6页浏览型号LM20133MHE的Datasheet PDF文件第7页 
November 13, 2007  
LM20133  
3A, PowerWise® Synchronous Buck Regulator with Input  
Synchronization  
General Description  
Features  
The LM20133 is a full featured synchronous buck regulator  
capable of delivering up to 3A of continuous output current.  
The current mode control loop can be compensated to be  
stable with virtually any type of output capacitor. For most  
cases, compensating the device only requires two external  
components, providing maximum flexibility and ease of use.  
The device is optimized to work over the input voltage range  
of 2.95V to 5.5V making it suited for a wide variety of low volt-  
age systems.  
Input voltage range 2.95V to 5.5V  
■
■
■
■
Accurate current limit minimizes inductor size  
97% peak efficiency  
Frequency synchronization pin  
32 mΩ integrated FET switches  
Starts up into pre-biased loads  
Output voltage tracking  
■
■
■
■
■
■
■
Peak current mode control  
The device features internal over voltage protection (OVP)  
and over current protection (OCP) circuits for increased sys-  
tem reliability. A precision enable pin and integrated UVLO  
allows the turn on of the device to be tightly controlled and  
sequenced. Start-up inrush currents are limited by both an  
internally fixed and externally adjustable Soft-Start circuit.  
Fault detection and supply sequencing is possible with the  
integrated power good circuit.  
Adjustable Soft-Start with external capacitor  
Precision enable pin with hysteresis  
Integrated OVP, UVLO, power good and thermal  
shutdown  
eTSSOP-16 exposed pad package  
■
Applications  
The switching frequency of the LM20133 can be synchro-  
nized to an external clock by use of the SYNC pin. The SYNC  
pin is capable of synchronizing to input signals ranging from  
500 kHz to 1.5 MHz.  
Simple to design, high efficiency point of load regulation  
from a 5V or 3.3V bus  
■
High Performance DSPs, FPGAs, ASICs and  
microprocessors  
■
The LM20133 is designed to work well in multi-rail power  
supply architectures. The output voltage of the device can be  
configured to track a higher voltage rail using the SS/TRK pin.  
If the output of the LM20133 is pre-biased at startup it will not  
sink current to pull the output low until the internal soft-start  
ramp exceeds the voltage at the feedback pin.  
Broadband, Networking and Optical Communications  
Infrastructure  
■
The LM20133 is offered in a 16-pin eTSSOP package with an  
exposed pad that can be soldered to the PCB, eliminating the  
need for bulky heatsinks.  
Typical Application Circuit  
30030301  
®
PowerWise is a registered trademark of National Semiconductor Corporation.  
© 2007 National Semiconductor Corporation  
300303  
www.national.com  
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