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LM22671QMRX-ADJ/NOPB PDF预览

LM22671QMRX-ADJ/NOPB

更新时间: 2024-11-07 00:54:23
品牌 Logo 应用领域
德州仪器 - TI 开关光电二极管
页数 文件大小 规格书
29页 1303K
描述
LM22671/-Q1 42 V, 500 mA SIMPLE SWITCHER® Step-Down Voltage Regulator with Features

LM22671QMRX-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:HLSOP,
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:6 weeks
风险等级:1.65其他特性:ALSO OPERATES IN ADJUSTABLE MODE 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-PDSO-G8JESD-609代码:e3
长度:4.9 mm湿度敏感等级:3
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:0.5 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:HLSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE峰值回流温度(摄氏度):260
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: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:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:3.9 mm

LM22671QMRX-ADJ/NOPB 数据手册

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LM22671, LM22671-Q1  
SNVS589N SEPTEMBER 2008REVISED NOVEMBER 2014  
®
LM22671/-Q1 42 V, 500 mA SIMPLE SWITCHER Step-Down Voltage Regulator  
with Features  
1 Features  
3 Description  
The LM22671 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  
capable of providing up to 500 mA 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 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 (typ).  
An adjustable soft-start feature is provided through  
the selection of a single external capacitor. The  
LM22671 device 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  
200 mN-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 Pin  
Integrated Boot-Strap Diode  
Adjustable Soft-Start  
Fully WEBENCH® Enabled  
LM22671-Q1 is an Automotive Grade Product  
that is AEC-Q100 Grade 1 Qualified (–40°C to  
+125°C Operating Junction Temperature)  
SO PowerPAD™ (Exposed Pad)  
2 Applications  
Industrial Control  
The LM22671 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.  
Telecom and Datacom Systems  
Embedded Systems  
Conversions from Standard 24 V, 12 V and 5 V  
Input Rails  
Simplified Application Schematic  
VIN  
FB  
BOOT  
SW  
VIN  
Device Information(1)  
LM22671-ADJ  
PART NUMBER  
LM22671  
PACKAGE  
BODY SIZE (NOM)  
VOUT  
RT/SYNC SS EN GND  
HSOP (8)  
4.89 mm x 3.90 mm  
LM22671-Q1  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
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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