Integrated Circuits (ICs)

LM22672QMR-ADJ/NOPB

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1A SIMPLE SWITCHER®, STEP-DOWN VOLTAGE REGULATOR WITH ADJUSTABLE FREQUENCY

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Search across all available documentation for this part.

DocumentsAN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)+18

Integrated Circuits (ICs)

LM22672QMR-ADJ/NOPB

Active

Texas Instruments

1A SIMPLE SWITCHER®, STEP-DOWN VOLTAGE REGULATOR WITH ADJUSTABLE FREQUENCY

Deep-Dive with AI

DocumentsAN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)+18

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM22672QMR-ADJ/NOPB

Current - Output	1 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	Adjustable
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 (Max)	37 V
Voltage - Output (Min/Fixed)	1.285 V

LM22672-Q1 Series

1A SIMPLE SWITCHER®, Step-Down Voltage Regulator with Adjustable Frequency

Part	Topology	Function	Number of Outputs	Voltage - Output (Min/Fixed)	Current - Output	Output Type	Operating Temperature [Min]	Operating Temperature [Max]	Qualification	Voltage - Input (Max) [Max]	Grade	Voltage - Input (Min) [Min]	Voltage - Output (Max)	Frequency - Switching	Mounting Type	Output Configuration	Package / Case [y]	Package / Case [x]	Package / Case	Supplier Device Package	Output Type	Voltage - Input [Max]	Voltage - Input [Min]	Board Type	Outputs and Type	Outputs and Type	Main Purpose	Voltage - Output	Supplied Contents	Regulator Topology	Utilized IC / Part
Texas Instruments LM22672QMRE-ADJ/NOPB	Buck	Step-Down	1	1.285 V	1 A	Adjustable	-40 °C	125 ¯C	AEC-Q100	42 V	Automotive	4.5 V	37 V	500 kHz	Surface Mount	Positive	3.9 mm	0.154 in	8-PowerSOIC	8-SO PowerPad
Texas Instruments LM22672MR-5.0/NOPB	Buck	Step-Down	1	5 V	1 A		-40 °C	125 ¯C		42 V		4.5 V		500 kHz	Surface Mount	Positive	3.9 mm	0.154 in	8-PowerSOIC	8-SO PowerPad	1.81 mOhm
Texas Instruments LM22672QMRX-ADJ/NOPB	Buck	Step-Down	1	1.285 V	1 A	Adjustable	-40 °C	125 ¯C	AEC-Q100	42 V	Automotive	4.5 V	37 V	500 kHz	Surface Mount	Positive	3.9 mm	0.154 in	8-PowerSOIC	8-SO PowerPad
Texas Instruments LM22672MRX-ADJ/NOPB	Buck	Step-Down	1	1.285 V	1 A	Adjustable	-40 °C	125 ¯C		42 V		4.5 V	37 V	500 kHz	Surface Mount	Positive	3.9 mm	0.154 in	8-PowerSOIC	8-SO PowerPad
Texas Instruments LM22672QMRE-5.0/NOPB	Buck	Step-Down	1	5 V	1 A		-40 °C	125 ¯C	AEC-Q100	42 V	Automotive	4.5 V		500 kHz	Surface Mount	Positive	3.9 mm	0.154 in	8-PowerSOIC	8-SO PowerPad	1.81 mOhm
Texas Instruments LM22672QMR-ADJ/NOPB	Buck	Step-Down	1	1.285 V	1 A	Adjustable	-40 °C	125 ¯C	AEC-Q100	42 V	Automotive	4.5 V	37 V	500 kHz	Surface Mount	Positive	3.9 mm	0.154 in	8-PowerSOIC	8-SO PowerPad
Texas Instruments LM22672MR-ADJ/NOPB	Buck	Step-Down	1	1.285 V	1 A	Adjustable	-40 °C	125 ¯C		42 V		4.5 V	37 V	500 kHz	Surface Mount	Positive	3.9 mm	0.154 in	8-PowerSOIC	8-SO PowerPad
Texas Instruments LM22672QMRX-5.0/NOPB	Buck	Step-Down	1	5 V	1 A		-40 °C	125 ¯C	AEC-Q100	42 V	Automotive	4.5 V		500 kHz	Surface Mount	Positive	3.9 mm	0.154 in	8-PowerSOIC	8-SO PowerPad	1.81 mOhm
Texas Instruments LM22672EVAL/NOPB					1 A									500 kHz								42 V	4.5 V	Fully Populated	Non-Isolated	1	DC/DC Step Down	3.3 V	Board(s)	Buck	LM22672
Texas Instruments LM22672MRE-ADJ/NOPB	Buck	Step-Down	1	1.285 V	1 A	Adjustable	-40 °C	125 ¯C		42 V		4.5 V	37 V	500 kHz	Surface Mount	Positive	3.9 mm	0.154 in	8-PowerSOIC	8-SO PowerPad

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 6.96
		10	$ 4.73
		25	$ 4.15
		100	$ 3.51
		250	$ 3.19
		500	$ 3.00
Texas Instruments	TUBE	1	$ 3.93
		100	$ 3.21
		250	$ 2.52
		1000	$ 2.14

Description

General part information

LM22672-Q1 Series

The LM22672 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 1 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 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 LM22672 also has built in thermal shutdown, and current limiting to protect against accidental overloads.

The LM22672 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

LM22672QMR-ADJ/NOPB

Deep-Dive with AI

LM22672QMR-ADJ/NOPB

Deep-Dive with AI

Technical Specifications

LM22672-Q1 Series

Pricing

Description

LM22672-Q1 Series

Documents

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

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

SIMPLE SWITCHER® Design Guide

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

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

Semiconductor and IC Package Thermal Metrics (Rev. D)

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

LM22672/-Q1 42-V, 1-A SIMPLE SWITCHER® Step-Down Voltage Regulator with Features datasheet (Rev. M)

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

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

AN-1896 LM22672 Evaluation Board (Rev. D)

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

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

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

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

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

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

Input and Output Capacitor Selection

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

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

LM22672-Q1 Series