Integrated Circuits (ICs)

LM22673QMR-5.0/NOPB

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3A SIMPLE SWITCHER®, STEP-DOWN VOLTAGE REG. WITH ADJUSTABLE SOFT-START AND CURRENT LIMIT

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Search across all available documentation for this part.

DocumentsLow EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)+17

Integrated Circuits (ICs)

LM22673QMR-5.0/NOPB

Active

Texas Instruments

3A SIMPLE SWITCHER®, STEP-DOWN VOLTAGE REG. WITH ADJUSTABLE SOFT-START AND CURRENT LIMIT

Deep-Dive with AI

DocumentsLow EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)+17

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM22673QMR-5.0/NOPB

Current - Output	3 A
Frequency - Switching	500 kHz
Function	Step-Down
Grade	Automotive
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	1.81 mOhm
Package / Case	8-PowerSOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Qualification	AEC-Q100
Supplier Device Package	8-SO PowerPad
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Max) [Max]	42 V
Voltage - Input (Min) [Min]	4.5 V
Voltage - Output (Min/Fixed)	5 V

LM22673-Q1 Series

3A SIMPLE SWITCHER®, Step-Down Voltage Reg. with Adjustable Soft-Start and Current Limit

Part	Voltage - Input (Max) [Max]	Output Type	Supplier Device Package	Topology	Function	Package / Case [y]	Package / Case [x]	Package / Case	Frequency - Switching	Current - Output	Voltage - Input (Min) [Min]	Output Configuration	Voltage - Output (Max)	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Voltage - Output (Min/Fixed)	Number of Outputs	Grade	Output Type	Qualification
Texas Instruments LM22673MRX-ADJ/NOPB	42 V	Adjustable	8-SO PowerPad	Buck	Step-Down	3.9 mm	0.154 in	8-PowerSOIC	500 kHz	3 A	4.5 V	Positive	37 V	-40 °C	125 ¯C	Surface Mount	1.285 V	1
Texas Instruments LM22673QMRE-5.0/NOPB	42 V		8-SO PowerPad	Buck	Step-Down	3.9 mm	0.154 in	8-PowerSOIC	500 kHz	3 A	4.5 V	Positive		-40 °C	125 ¯C	Surface Mount	5 V	1	Automotive	1.81 mOhm	AEC-Q100
Texas Instruments LM22673MR-ADJ/NOPB	42 V	Adjustable	8-SO PowerPad	Buck	Step-Down	3.9 mm	0.154 in	8-PowerSOIC	500 kHz	3 A	4.5 V	Positive	37 V	-40 °C	125 ¯C	Surface Mount	1.285 V	1
Texas Instruments LM22673QTJ-5.0/NOPB	42 V		TO-263-7 Thin	Buck	Step-Down			TO-263-7 Thin	500 kHz	3 A	4.5 V	Positive		-40 °C	125 ¯C	Surface Mount	5 V	1	Automotive	1.81 mOhm	AEC-Q100
Texas Instruments LM22673QTJ-ADJ/NOPB	42 V	Adjustable	TO-263-7 Thin	Buck	Step-Down			TO-263-7 Thin	500 kHz	3 A	4.5 V	Positive	37 V	-40 °C	125 ¯C	Surface Mount	1.285 V	1	Automotive		AEC-Q100
Texas Instruments LM22673TJE-ADJ/NOPB	42 V	Adjustable	TO-263-7 Thin	Buck	Step-Down			TO-263-7 Thin	500 kHz	3 A	4.5 V	Positive	37 V	-40 °C	125 ¯C	Surface Mount	1.285 V	1
Texas Instruments LM22673QMR-ADJ/NOPB	42 V	Adjustable	8-SO PowerPad	Buck	Step-Down	3.9 mm	0.154 in	8-PowerSOIC	500 kHz	3 A	4.5 V	Positive	37 V	-40 °C	125 ¯C	Surface Mount	1.285 V	1	Automotive		AEC-Q100
Texas Instruments LM22673QMR-5.0/NOPB	42 V		8-SO PowerPad	Buck	Step-Down	3.9 mm	0.154 in	8-PowerSOIC	500 kHz	3 A	4.5 V	Positive		-40 °C	125 ¯C	Surface Mount	5 V	1	Automotive	1.81 mOhm	AEC-Q100
Texas Instruments LM22673QMRX-5.0/NOPB	42 V		8-SO PowerPad	Buck	Step-Down	3.9 mm	0.154 in	8-PowerSOIC	500 kHz	3 A	4.5 V	Positive		-40 °C	125 ¯C	Surface Mount	5 V	1	Automotive	1.81 mOhm	AEC-Q100
Texas Instruments LM22673TJE-5.0/NOPB	42 V		TO-263-7 Thin	Buck	Step-Down			TO-263-7 Thin	500 kHz	3 A	4.5 V	Positive		-40 °C	125 ¯C	Surface Mount	5 V	1		1.81 mOhm

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	285	$ 4.62
Texas Instruments	TUBE	1	$ 4.55
		100	$ 3.71
		250	$ 2.91
		1000	$ 2.47

Description

General part information

LM22673-Q1 Series

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.

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.

Documents

Technical documentation and resources

LM22673QMR-5.0/NOPB

Deep-Dive with AI

LM22673QMR-5.0/NOPB

Deep-Dive with AI

Technical Specifications

LM22673-Q1 Series

Pricing

Description

LM22673-Q1 Series

Documents

Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)

AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)

AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)

Semiconductor and IC Package Thermal Metrics (Rev. D)

AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)

AN-1797 TO-263 THIN Package (Rev. A)

AN-643 EMI/RFI Board Design (Rev. B)

AN-1533 Overvoltage Protection Circuit for Automotive Load Dump (Rev. B)

LM22673/-Q1 42 V, 3 A SIMPLE SWITCHER®, Step-Down Voltage Regulator with Features datasheet (Rev. O)

AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)

AN-1197 Selecting Inductors for Buck Converters (Rev. B)

AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)

Input and Output Capacitor Selection

AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)

SIMPLE SWITCHER Regulators Take Over Automotive Applications (Rev. B)

AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)

AN-2020 Thermal Design By Insight, Not Hindsight (Rev. C)

AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)

AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A)

LM22673-Q1 Series