Datasheet Texas Instruments LM22670

Manufacturer	Texas Instruments
Series	LM22670

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Parametrics

Parameters / Models	LM22670MR-5.0/NOPB	LM22670MR-ADJ/NOPB	LM22670MRE-5.0/NOPB	LM22670MRE-ADJ/NOPB	LM22670MRX-5.0/NOPB	LM22670MRX-ADJ/NOPB	LM22670TJ-5.0/NOPB	LM22670TJ-ADJ/NOPB	LM22670TJE-5.0/NOPB	LM22670TJE-ADJ/NOPB
Control Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode
Duty Cycle(Max), %	90	90	90	90	90	90	90	90	90	90
Iout(Max), A	3	3	3	3	3	3	3	3	3	3
Iq(Typ), mA	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4
Operating Temperature Range, C	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125
Package Group	SO PowerPAD	SO PowerPAD	SO PowerPAD	SO PowerPAD	SO PowerPAD	SO PowerPAD	TO-263	TO-263	TO-263	TO-263
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Regulated Outputs	1	1	1	1	1	1	1	1	1	1
Special Features	Enable	Enable	Enable	Enable	Enable	Enable	Enable	Enable	Enable	Enable
Switching Frequency(Max), kHz	1000	1000	1000	1000	1000	1000	1000	1000	1000	1000
Switching Frequency(Min), kHz	200	200	200	200	200	200	200	200	200	200
Type	Converter	Converter	Converter	Converter	Converter	Converter	Converter	Converter	Converter	Converter
Vin(Max), V	42	42	42	42	42	42	42	42	42	42
Vin(Min), V	4.5	4.5	4.5	4.5	4.5	4.5	4.5	4.5	4.5	4.5
Vout(Max), V	37	37	37	37	37	37	37	37	37	37
Vout(Min), V	1.285	1.285	1.285	1.285	1.285	1.285	1.285	1.285	1.285	1.285

Eco Plan

Application Notes

• Download
  AN-643 EMI/RFI Board Design (Rev. B)
  PDF, 742 Kb, Revision: B, File published: May 3, 2004
  Application Note 643 EMI/RFI Board Design
• Download
  AN-1533 Overvoltage Protection Circuit for Automotive Load Dump (Rev. B)
  PDF, 83 Kb, Revision: B, File published: May 6, 2013
  This application report discusses an over voltage protection circuit for automotive load dump.
• Download
  Input and Output Capacitor Selection
  PDF, 219 Kb, File published: Sep 19, 2005
• Download
  AN-1197 Selecting Inductors for Buck Converters (Rev. B)
  PDF, 558 Kb, Revision: B, File published: Apr 23, 2013
  This application report provides design information to help select an off-the-shelf inductor for anycontinuous-mode buck converter application.
• Download
  AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)
  PDF, 3.6 Mb, Revision: A, File published: Apr 23, 2013
  This application note will explore how the layout of your DC/DC power supply can significantly affect theamount of EMI that it produces. It will discuss several variations of a layout analyze the results andprovide answers to some common EMI questions such whether or not to use a shielded inductor.
• Download
  AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)
  PDF, 1.4 Mb, Revision: A, File published: Apr 23, 2013
  This application note provides thermal power analysis techniques for analyzing the power IC.
• Download
  AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)
  PDF, 2.7 Mb, Revision: A, File published: Apr 23, 2013
  This application report shows how to measure the critical points of a bode plot with only an audiogenerator (or simple signal generator) and an oscilloscope. The method is explained in an easy to followstep-by-step manner so that a power supply designer can start performing these measurements in a shortamount of time.
• Download
  Semiconductor and IC Package Thermal Metrics (Rev. C)
  PDF, 201 Kb, Revision: C, File published: Apr 19, 2016
• Download
  AN-1797 TO-263 THIN Package (Rev. A)
  PDF, 2.3 Mb, Revision: A, File published: Apr 24, 2013
  This application note describes the TO–263 THIN Package.
• Download
  AN-2020 Thermal Design By Insight, Not Hindsight (Rev. C)
  PDF, 568 Kb, Revision: C, File published: Apr 23, 2013
  This application report provides an in-depth discussion of thermal design.
• Download
  AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A)
  PDF, 153 Kb, Revision: A, File published: May 6, 2013
  The development of realistic predictions to assist the power supply engineer during the control loop design process is facilitated in this application report by appropriate small-signal and bode plot analysis, the validity of which is verified through simulation results.
• Download
  SIMPLE SWITCHER Regulators Take Over Automotive Applications (Rev. A)
  PDF, 72 Kb, Revision: A, File published: Apr 23, 2013
  Power management applications, typically located on the front line of the automotive electronics system,can be subject to wide input operating voltage extremes resulting from load-dump and cold-crankingconditions. Careful selection of the power management electronics can provide added margin andprotection to the automotive electronics system. The simplest design is provided by a power manage
• Download
  Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)
  PDF, 512 Kb, Revision: A, File published: Sep 12, 2014
  Printed Circuit Board (PCB) layout for Switched Mode Power Supplies (SMPS) is critical to achieve proper converter operation good thermal performance and excellent radiated EMI performance. Optimized board layout for low radiated EMI is made very simple by the package and pin arrangement of the SIMPLE SWITCHER Synchronous Buck Converter family LM4360x and LM4600x
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  AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)
  PDF, 82 Kb, Revision: C, File published: Apr 23, 2013
  When designing a high frequency switching regulated power supply layout is very important. Using agood layout can solve many problems associated with these types of supplies. The problems due to a badlayout are often seen at high current levels and are usually more obvious at large input to output voltagedifferentials. Some of the main problems are loss of regulation at high output current
• Download
  Know Your Limits
  PDF, 227 Kb, File published: Jun 2, 2015
  This paper describes some of the more important features of current limit operation and how it effects theuser application. The need for both overload and short circuit protection is highlighted along with some ofthe typical methods for providing this protection in DC/DC converters.
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  AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)
  PDF, 374 Kb, Revision: C, File published: Apr 23, 2013
  This application report provides SIMPLE SWITCHER™ PCB layout guidelines.
• Download
  AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)
  PDF, 2.5 Mb, Revision: C, File published: Apr 24, 2013
  Electromagnetic Interference (EMI) is an unwanted effect between two electrical systems as a result ofeither electromagnetic radiation or electromagnetic conduction. EMI is the major adverse effect caused bythe application of switch-mode power supplies (SMPS). In switching power supplies EMI noise isunavoidable due to the switching actions of the semiconductor devices and resulting disconti
• Download
  AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)
  PDF, 427 Kb, Revision: C, File published: Apr 23, 2013
  This application note discusses stresses in wide input DC-DC converters.
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  AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)
  PDF, 9.2 Mb, Revision: B, File published: Apr 23, 2013
  This thermal application report provides guidelines for the optimal board layout to achieve the best thermalresistance for exposed packages. The thermal resistance between junction-to-ambient (ОёJA) is highlydependent on the PCB (Printed Circuit Board) design factors. This becomes more critical for packageshaving very low thermal resistance between junction-to-case such as exposed pad TSSOP

Model Line

Manufacturer's Classification

• Semiconductors> Power Management> Non-isolated DC/DC Switching Regulator> Step-Down (Buck)> Buck Converter (Integrated Switch)