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LM22677QTJE-ADJ/NOPB

更新时间： 2024-11-22 00:54:23
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德州仪器 - TI 开关输出元件
页数 文件大小 规格书
28页 1240K
描述
LM22677/-Q1 42-V, 5-A SIMPLE SWITCHER®, Step-Down Voltage Regulator With Features

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LM22677QTJE-ADJ/NOPB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：TO-263,
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：1.56其他特性：ADJUSTABLE OUTPUT MODE FROM 1.285 TO 5 V
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-G7JESD-609代码：e3
长度：10.16 mm湿度敏感等级：1
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最大输出电压：37 V
最小输出电压：1.285 V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峰值回流温度（摄氏度）：260
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：1000 kHz
温度等级：AUTOMOTIVE端子面层：Matte Tin (Sn)
端子形式：GULL WING端子节距：1.27 mm
端子位置：SINGLE处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：9.85 mmBase Number Matches：1

LM22677QTJE-ADJ/NOPB 数据手册

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Sample &  
Buy  
Support &  
Community  
Reference  
Design  
Product  
Folder  
Tools &  
Software  
Technical  
Documents  
LM22677, LM22677-Q1  
SNVS582O –SEPTEMBER 2008–REVISED AUGUST 2015  
®
LM22677/-Q1 42-V, 5-A SIMPLE SWITCHER , Step-Down Voltage Regulator  
With Features  
1 Features  
3 Description  
The LM22677 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  
incorporates a 42-V N-channel MOSFET switch that  
can provide up to 5 A 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  
5-V output and adjustable output voltage options are  
available. The default switching frequency is set at  
500 kHz, thus allowing for small external components  
and good transient response. In addition, the  
frequency can be adjusted over a range of 200 kHz  
to 1 MHz 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 (typical). The LM22677  
also has built-in thermal shutdown, and current  
limiting to protect against accidental overloads.  
1
•
Wide Input Voltage Range: 4.5 V to 42 V  
Internally Compensated Voltage Mode Control  
Stable With Low ESR Ceramic Capacitors  
100-mΩ N-Channel MOSFET  
•
•
•
•
Output Voltage Options:  
–
–
-ADJ (Outputs as Low as 1.285 V)  
-5.0 (Output Fixed to 5 V)  
•
•
•
±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 Input  
Integrated Boot-Strap Diode  
Integrated Soft-Start  
Fully WEBENCH® Enabled  
LM22677-Q1 is an Automotive-Grade Product  
that is AEC-Q100 Grade 1 Qualified (–40°C to  
+125°C Operating Junction Temperature)  
•
NDR (Exposed Pad)  
The LM22677 device is  
a member of Texas  
Instruments' 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.  
2 Applications  
•
•
•
•
Industrial Control  
Telecom and Datacom Systems  
Embedded Systems  
Conversions from Standard 24-V, 12-V and 5-V  
Input Rails  
Device Information(1)  
Simplified Application Schematic  
PART NUMBER  
LM22677  
PACKAGE  
BODY SIZE (NOM)  
VIN  
VIN  
FB  
LM22677-ADJ BOOT  
SW  
TO-263 (7)  
10.16 mm x 9.85 mm  
LM22677-Q1  
VOUT  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
RT/SYNC EN GND  
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 
 
 
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LM22677QTJE-ADJ/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM22677QTJ-ADJ/NOPB TI

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