Specification	LM22679TJ-5.0/NOPB

Current - Output	5 A
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	1.81 mOhm
Package / Case	TO-263-7 Thin
Supplier Device Package	TO-263-7 Thin
Synchronous Rectifier	False
Topology	Buck
Voltage - Input (Max) [Max]	42 V
Voltage - Input (Min) [Min]	4.5 V
Voltage - Output (Min/Fixed)	5 V

LM22679-Q1 Series

SIMPLE SWITCHER® 4.5V to 42V, 5A Step-Down Voltage Regulator with Adjustable Soft-Start & Current Li

Part	Grade	Frequency - Switching	Supplier Device Package	Voltage - Input (Max) [Max]	Output Configuration	Mounting Type	Voltage - Output (Min/Fixed)	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case	Current - Output	Voltage - Input (Min) [Min]	Qualification	Topology	Function	Number of Outputs	Output Type	Voltage - Output (Max)	Output Type
Texas Instruments LM22679QTJ-5.0/NOPB	Automotive	500 kHz	TO-263-7 Thin	42 V	Positive	Surface Mount	5 V	-40 °C	125 ¯C	TO-263-7 Thin	5 A	4.5 V	AEC-Q100	Buck	Step-Down	1	1.81 mOhm
Texas Instruments LM22679QTJE-5.0/NOPB	Automotive	500 kHz	TO-263-7 Thin	42 V	Positive	Surface Mount	5 V	-40 °C	125 ¯C	TO-263-7 Thin	5 A	4.5 V	AEC-Q100	Buck	Step-Down	1	1.81 mOhm
Texas Instruments LM22679TJE-ADJ/NOPB		500 kHz	TO-263-7 Thin	42 V	Positive	Surface Mount	1.285 V	-40 °C	125 ¯C	TO-263-7 Thin	5 A	4.5 V		Buck	Step-Down	1		37 V	Adjustable
Texas Instruments LM22679TJE-5.0/NOPB		500 kHz	TO-263-7 Thin	42 V	Positive	Surface Mount	5 V	-40 °C	125 ¯C	TO-263-7 Thin	5 A	4.5 V		Buck	Step-Down	1	1.81 mOhm
Texas Instruments LM22679TJ-5.0/NOPB		500 kHz	TO-263-7 Thin	42 V	Positive	Surface Mount	5 V	-40 °C	125 ¯C	TO-263-7 Thin	5 A	4.5 V		Buck	Step-Down	1	1.81 mOhm
Texas Instruments LM22679QTJE-ADJ/NOPB	Automotive	500 kHz	TO-263-7 Thin	42 V	Positive	Surface Mount	1.285 V	-40 °C	125 ¯C	TO-263-7 Thin	5 A	4.5 V	AEC-Q100	Buck	Step-Down	1		37 V	Adjustable
Texas Instruments LM22679QTJ-ADJ/NOPB	Automotive	500 kHz	TO-263-7 Thin	42 V	Positive	Surface Mount	1.285 V	-40 °C	125 ¯C	TO-263-7 Thin	5 A	4.5 V	AEC-Q100	Buck	Step-Down	1		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	Bulk	90	$ 3.36
	Cut Tape (CT)	1	$ 5.60
		10	$ 4.29
		25	$ 3.96
		100	$ 3.59
		250	$ 3.42
		500	$ 3.32
	Digi-Reel®	1	$ 5.60
		10	$ 4.29
		25	$ 3.96
		100	$ 3.59
		250	$ 3.42
		500	$ 3.32
	Tape & Reel (TR)	1000	$ 3.23
		2000	$ 3.16
		3000	$ 3.13
Texas Instruments	LARGE T&R	1	$ 4.27
		100	$ 3.48
		250	$ 2.74
		1000	$ 2.32

Description

General part information

LM22679-Q1 Series

The LM22679 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 that can provide up to 5 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 LM22679 device also has built-in thermal shutdown and current limiting to protect against accidental overloads.

The new product,LM61460, offers higher efficiency, lower stand-by quiescent current, and improved EMI performance. See thedevice comparison tableto compare.Start WEBENCH design with LM61460

The LM22679 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

LM22679TJ-5.0/NOPB

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LM22679TJ-5.0/NOPB

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Technical Specifications

LM22679-Q1 Series

Pricing

Description

LM22679-Q1 Series

Documents

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

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

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

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

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

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)

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)

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

AN-1891 LM22679 Evaluation Board (Rev. E)

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

Semiconductor and IC Package Thermal Metrics (Rev. D)

Power Management Guide 2018 (Rev. R)

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

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

SIMPLE SWITCHER® Design Guide

Input and Output Capacitor Selection

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

LM22679/-Q1 42-V, 5-A SIMPLE SWITCHER® Step-Down Voltage Regulator With Easy-to-Use Package datasheet (Rev. M)

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

LM22679-Q1 Series