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LM22678QTJ-ADJ

更新时间： 2024-11-21 12:06:07
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关式稳压器或控制器电源电路开关式控制器输出元件
页数 文件大小 规格书
23页 1890K
描述
LM22678/LM22678Q 42V, 5A SIMPLE SWITCHER Step-Down Voltage Regulator with Features

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LM22678QTJ-ADJ 技术参数

生命周期：Obsolete零件包装代码：D2PAK
包装说明：PLASTIC, TO-263, 7 PIN针数：4
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.58
Is Samacsys：N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 V
JESD-30 代码：R-PSSO-G7长度：10.16 mm
功能数量：1端子数量：7
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电流：8.75 A封装主体材料：PLASTIC/EPOXY
封装代码：TO-263封装形状：RECTANGULAR
封装形式：SMALL OUTLINE认证状态：Not Qualified
座面最大高度：2.25 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：SINGLE
宽度：9.85 mmBase Number Matches：1

LM22678QTJ-ADJ 数据手册

 浏览型号LM22678QTJ-ADJ的Datasheet PDF文件第2页浏览型号LM22678QTJ-ADJ的Datasheet PDF文件第3页浏览型号LM22678QTJ-ADJ的Datasheet PDF文件第4页浏览型号LM22678QTJ-ADJ的Datasheet PDF文件第5页浏览型号LM22678QTJ-ADJ的Datasheet PDF文件第6页浏览型号LM22678QTJ-ADJ的Datasheet PDF文件第7页 
LM22678  
www.ti.com  
SNVS585K –SEPTEMBER 2008–REVISED MARCH 2013  
®
LM22678/LM22678Q 42V, 5A SIMPLE SWITCHER Step-Down Voltage Regulator with  
Features  
Check for Samples: LM22678  
1
FEATURES  
DESCRIPTION  
The LM22678 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  
100 mΩ N-Channel MOSFET  
•
•
•
•
incorporates  
a 42V N-channel MOSFET switch  
capable of providing up to 5A 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. A switching frequency  
of 500 kHz allows for small external components and  
good transient response. 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 LM22678 also has  
built in thermal shutdown, and current limiting to  
protect against accidental overloads.  
Output Voltage Options:  
–
–
-ADJ (Outputs as Low as 1.285V)  
-5.0 (Output Fixed to 5V)  
•
•
•
±1.5% Feedback Reference Accuracy  
Switching Frequency of 500 kHz  
-40°C to 125°C Operating Junction  
Temperature Range  
•
•
•
•
•
Precision Enable Pin  
Integrated Boot-Strap Diode  
Integrated Soft-Start  
Fully WEBENCH® enabled  
LM22678Q is an Automotive Grade Product  
that is AEC-Q100 Grade 1 Qualified (-40°C to  
+125°C Operating Junction Temperature)  
The LM22678 is a member of Texas Instruments'  
•
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  
Simplified Application Schematic  
VIN  
VIN  
FB  
BOOT  
SW  
LM22678-ADJ  
VOUT  
EN  
GND  
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.  
SIMPLE SWITCHER, WEBENCH are registered trademarks of Texas Instruments.  
2
3
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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