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LM22670QMRE-ADJ

更新时间： 2024-11-11 12:09:39
品牌 Logo 应用领域
德州仪器 - TI 稳压器
页数 文件大小 规格书
29页 1512K
描述
LM22670/LM22670Q 42V, 3A SIMPLE SWITCHER, Step-Down Voltage Regulator with

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LM22670QMRE-ADJ 技术参数

生命周期：Obsolete零件包装代码：SOIC
包装说明：HLSOP,针数：8
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.64
其他特性：ALSO HAS ADJUSTABLE OUTPUTS AS LOW AS 1.285V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：42 V最小输入电压：4.5 V
标称输入电压：12 VJESD-30 代码：R-PDSO-G8
长度：4.9 mm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：5.5 A
封装主体材料：PLASTIC/EPOXY封装代码：HLSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE
认证状态：Not Qualified座面最大高度：1.68 mm
表面贴装：YES切换器配置：BUCK
最大切换频率：600 kHz温度等级：AUTOMOTIVE
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL宽度：3.9 mm
Base Number Matches：1

LM22670QMRE-ADJ 数据手册

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LM22670  
www.ti.com  
SNVS584O –SEPTEMBER 2008–REVISED MARCH 2013  
®
LM22670/LM22670Q 42V, 3A SIMPLE SWITCHER , Step-Down Voltage Regulator with  
Features  
Check for Samples: LM22670  
1
FEATURES  
DESCRIPTION  
The LM22670 switching regulator provides all of the  
functions necessary to implement an efficient high  
voltage step-down (buck) regulator using a minimum  
of external components. This easy to use regulator  
23  
•
Wide Input Voltage Range: 4.5V to 42V  
Internally Compensated Voltage Mode Control  
Stable with Low ESR Ceramic Capacitors  
120 mΩ N-channel MOSFET PFM Package  
•
•
•
•
incorporates  
a 42V N-channel MOSFET switch  
capable of providing up to 3A of load current.  
Excellent line and load regulation along with high  
efficiency (>90%) are featured. Voltage mode control  
offers short minimum on-time, allowing the widest  
ratio between input and output voltages. Internal loop  
compensation means that the user is free from the  
tedious task of calculating the loop compensation  
components. Fixed 5V output and adjustable output  
voltage options are available. The default switching  
frequency is set at 500 kHz allowing for small  
external components and good transient response. In  
addition, the frequency can be adjusted over a range  
of 200 kHz to 1MHz with a single external resistor.  
The internal oscillator can be synchronized to a  
system clock or to the oscillator of another regulator.  
A precision enable input allows simplification of  
regulator control and system power sequencing. In  
shutdown mode the regulator draws only 25 µA (typ.).  
Built in soft-start (500µs, typ) saves external  
components. The LM22670 also has built in thermal  
shutdown, and current limiting to protect against  
accidental overloads.  
100 mΩ N-channel MOSFET SO PowerPAD-8  
Package  
•
Output Voltage Options:  
–
–
-ADJ (outputs as low as 1.285V)  
-5.0 (output fixed to 5V)  
•
•
•
±1.5% Feedback Reference Accuracy  
500 kHz Default Switching Frequency  
Adjustable Switching Frequency and  
Synchronization  
•
-40°C to 125°C Operating Junction  
Temperature Range  
•
•
•
•
•
Precision Enable Pin  
Integrated Boot-Strap Diode  
Integrated Soft-Start  
Fully WEBENCH® enabled  
LM22670Q is an Automotive Grade Product  
that is AEC-Q100 Grade 1 Qualified (-40°C to  
+125°C Operating Junction Temperature)  
The LM22670 is a member of Texas Instruments'  
•
•
SO PowerPAD-8 (Exposed Pad) Package  
PFM (Exposed Pad) Package  
SIMPLE  
SWITCHER®  
family.  
The  
SIMPLE  
SWITCHER concept provides for an easy to use  
complete design using a minimum number of external  
components and the TI WEBENCH design tool. TI's  
WEBENCH tool includes features such as external  
component calculation, electrical simulation, thermal  
simulation, and Build-It boards for easy design-in.  
APPLICATIONS  
•
•
•
•
Industrial Control  
Telecom and Datacom Systems  
Embedded Systems  
Conversions from Standard 24V, 12V and 5V  
Input Rails  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
3
SIMPLE SWITCHER, WEBENCH are registered trademarks of Texas Instruments Incorporated.  
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2008–2013, Texas Instruments Incorporated  
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