Integrated Circuits (ICs)

LM22674MRE-ADJ/NOPB

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4.5V TO 42V, 500MA SIMPLE SWITCHER® BUCK CONVERTER WITH PRECISION ENABLE

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Search across all available documentation for this part.

DocumentsAN-2020 Thermal Design By Insight, Not Hindsight (Rev. C)AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)+21

Integrated Circuits (ICs)

LM22674MRE-ADJ/NOPB

Active

Texas Instruments

4.5V TO 42V, 500MA SIMPLE SWITCHER® BUCK CONVERTER WITH PRECISION ENABLE

Deep-Dive with AI

DocumentsAN-2020 Thermal Design By Insight, Not Hindsight (Rev. C)AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)+21

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LM22674MRE-ADJ/NOPB

Current - Output	500 mA
Frequency - Switching	500 kHz
Function	Step-Down
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
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

LM22674-Q1 Series

500 mA SIMPLE SWITCHER®, Step-Down Voltage Regulator with Precision Enable

Part	Voltage - Input (Min) [Min]	Voltage - Input (Max) [Max]	Frequency - Switching	Topology	Voltage - Output (Min/Fixed)	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Mounting Type	Package / Case [y]	Package / Case [x]	Package / Case	Output Type	Output Configuration	Current - Output	Number of Outputs	Function	Grade	Qualification	Voltage - Output (Max)	Output Type
Texas Instruments LM22674MRE-5.0/NOPB	4.5 V	42 V	500 kHz	Buck	5 V	8-SO PowerPad	-40 °C	125 ¯C	Surface Mount	3.9 mm	0.154 in	8-PowerSOIC	1.81 mOhm	Positive	500 mA	1	Step-Down
Texas Instruments LM22674QMRX-5.0/NOPB	4.5 V	42 V	500 kHz	Buck	5 V	8-SO PowerPad	-40 °C	125 ¯C	Surface Mount	3.9 mm	0.154 in	8-PowerSOIC	1.81 mOhm	Positive	500 mA	1	Step-Down	Automotive	AEC-Q100
Texas Instruments LM22674MRE-ADJ/NOPB	4.5 V	42 V	500 kHz	Buck	1.285 V	8-SO PowerPad	-40 °C	125 ¯C	Surface Mount	3.9 mm	0.154 in	8-PowerSOIC		Positive	500 mA	1	Step-Down			37 V	Adjustable
Texas Instruments LM22674QMR-5.0/NOPB	4.5 V	42 V	500 kHz	Buck	5 V	8-SO PowerPad	-40 °C	125 ¯C	Surface Mount	3.9 mm	0.154 in	8-PowerSOIC	1.81 mOhm	Positive	500 mA	1	Step-Down	Automotive	AEC-Q100
Texas Instruments LM22674MR-5.0/NOPB	4.5 V	42 V	500 kHz	Buck	5 V	8-SO PowerPad	-40 °C	125 ¯C	Surface Mount	3.9 mm	0.154 in	8-PowerSOIC	1.81 mOhm	Positive	500 mA	1	Step-Down
Texas Instruments LM22674MR-ADJ/NOPB	4.5 V	42 V	500 kHz	Buck	1.285 V	8-SO PowerPad	-40 °C	125 ¯C	Surface Mount	3.9 mm	0.154 in	8-PowerSOIC		Positive	500 mA	1	Step-Down			37 V	Adjustable
Texas Instruments LM22674QMRE-5.0/NOPB	4.5 V	42 V	500 kHz	Buck	5 V	8-SO PowerPad	-40 °C	125 ¯C	Surface Mount	3.9 mm	0.154 in	8-PowerSOIC	1.81 mOhm	Positive	500 mA	1	Step-Down	Automotive	AEC-Q100
Texas Instruments LM22674QMRE-ADJ/NOPB	4.5 V	42 V	500 kHz	Buck	1.285 V	8-SO PowerPad	-40 °C	125 ¯C	Surface Mount	3.9 mm	0.154 in	8-PowerSOIC		Positive	500 mA	1	Step-Down	Automotive	AEC-Q100	37 V	Adjustable
Texas Instruments LM22674MRX-ADJ/NOPB	4.5 V	42 V	500 kHz	Buck	1.285 V	8-SO PowerPad	-40 °C	125 ¯C	Surface Mount	3.9 mm	0.154 in	8-PowerSOIC		Positive	500 mA	1	Step-Down			37 V	Adjustable
Texas Instruments LM22674QMR-ADJ/NOPB	4.5 V	42 V	500 kHz	Buck	1.285 V	8-SO PowerPad	-40 °C	125 ¯C	Surface Mount	3.9 mm	0.154 in	8-PowerSOIC		Positive	500 mA	1	Step-Down	Automotive	AEC-Q100	37 V	Adjustable

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 3.89
		10	$ 3.49
		25	$ 3.30
		100	$ 2.86
	Digi-Reel®	1	$ 3.89
		10	$ 3.49
		25	$ 3.30
		100	$ 2.86
	Tape & Reel (TR)	250	$ 2.71
		500	$ 2.43
		1250	$ 2.05
		2500	$ 1.95
Texas Instruments	SMALL T&R	1	$ 2.93
		100	$ 2.57
		250	$ 1.80
		1000	$ 1.45

Description

General part information

LM22674-Q1 Series

The LM22674 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. A switching frequency of 500 kHz allows for small external components and good transient response. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA (typ). Built in soft-start (500 µs, typ) saves external components. The LM22674 also has built in thermal shutdown, and current limiting to protect against accidental overloads.

The LM22674 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

LM22674MRE-ADJ/NOPB

Deep-Dive with AI

LM22674MRE-ADJ/NOPB

Deep-Dive with AI

Technical Specifications

LM22674-Q1 Series

Pricing

Description

LM22674-Q1 Series

Documents

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

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

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

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)

Power Management Guide 2018 (Rev. R)

Semiconductor and IC Package Thermal Metrics (Rev. D)

SIMPLE SWITCHER® Design Guide

Quantifying the value of wide VIN

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

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

Input and Output Capacitor Selection

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

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

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

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

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

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

DC/DC converter datasheets – System losses demystified

LM22674/-Q1 42 V, 500 mA SIMPLE SWITCHER® Step-Down Voltage Regulator with Features datasheet (Rev. M)

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

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

DC/DC converter datasheets – System efficiency demystified

LM22674-Q1 Series