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LM22673QMR-ADJ/NOPB

更新时间： 2024-09-17 00:44:11
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29页 1535K
描述
LM22673/-Q1 42 V, 3 A SIMPLE SWITCHER®, Step-Down Voltage Regulator with Features

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LM22673QMR-ADJ/NOPB 数据手册

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LM22673, LM22673-Q1  
SNVS586O –SEPTEMBER 2008–REVISED NOVEMBER 2014  
®
LM22673/-Q1 42 V, 3 A SIMPLE SWITCHER , Step-Down Voltage Regulator  
with Features  
1 Features  
3 Description  
The LM22673 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 3 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. A switching frequency  
of 500 kHz allows for small external components and  
good transient response. An adjustable soft-start  
feature is provided through the selection of a single  
external capacitor. In addition, the switch current limit  
can be programmed with a single external resistor,  
allowing solution optimization. The LM22673 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  
120 mΩ N-Channel MOSFET PFM Package  
•
•
•
•
100 mΩ N-Channel MOSFET SO PowerPAD  
Package  
•
Output Voltage Options:  
-ADJ (Outputs as Low as 1.285 V)  
-5.0 (Output Fixed to 5 V)  
•
•
•
±1.5% Feedback Reference Accuracy  
Switching Frequency of 500 kHz  
–40°C to 125°C Operating Junction  
Temperature Range  
•
•
•
•
•
Adjustable Soft-Start  
Adjustable Current Limit  
Integrated Boot-Strap Diode  
Fully Webench® Enabled  
LM22673-Q1 is an Automotive Grade Product  
that is AEC-Q100 Grade 1 Qualified (–40°C to  
+125°C Junction Temperature)  
The LM22673 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.  
•
•
SO PowerPAD (Exposed Pad)  
PFM (Exposed Pad)  
2 Applications  
•
•
•
•
Industrial Control  
Telecom and Datacom Systems  
Embedded Systems  
Device Information(1)  
Conversions from Standard 24 V, 12 V and 5 V  
Input Rails  
PART NUMBER  
PACKAGE  
HSOP (8)  
TO-263  
BODY SIZE (NOM)  
4.89 mm x 3.90 mm  
10.16 mm x 9.85 mm  
LM22673,  
LM22673-Q1  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
Simplified Application Schematic  
VIN  
VIN  
FB  
BOOT  
SW  
LM22673-ADJ  
VOUT  
IADJ  
SS 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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LM22673QMR-ADJ/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM22673QTJE-ADJ/NOPB TI

完全替代

 LM22673/-Q1 42 V, 3 A SIMPLE SWITCHER®, Step
LM22673QTJ-ADJ/NOPB TI

完全替代

 LM22673/-Q1 42 V, 3 A SIMPLE SWITCHER®, Step
LM22673QMRX-ADJ/NOPB TI

完全替代

 LM22673/-Q1 42 V, 3 A SIMPLE SWITCHER®, Step

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