Datasheet Texas Instruments LM5574

ManufacturerTexas Instruments
SeriesLM5574
Datasheet Texas Instruments LM5574

SIMPLE SWITCHERВ® 75V, 0.5A Step-Down Switching Regulator

Datasheets

LM5574/LM5574Q SIMPLE SWITCHER® 75V, 0.5A Step-Down Switching Regulator datasheet
PDF, 957 Kb, Revision: F, File published: Apr 4, 2013
Extract from the document

Prices

Status

LM5574MTLM5574MT/NOPBLM5574MTX/NOPB
Lifecycle StatusNRND (Not recommended for new designs)Active (Recommended for new designs)Active (Recommended for new designs)
Manufacture's Sample AvailabilityYesNoYes

Packaging

LM5574MTLM5574MT/NOPBLM5574MTX/NOPB
N123
Pin161616
Package TypePWPWPW
Industry STD TermTSSOPTSSOPTSSOP
JEDEC CodeR-PDSO-GR-PDSO-GR-PDSO-G
Package QTY92922500
CarrierTUBETUBELARGE T&R
Device MarkingMTLM5574LM5574
Width (mm)4.44.44.4
Length (mm)555
Thickness (mm)111
Pitch (mm).65.65.65
Max Height (mm)1.21.21.2
Mechanical DataDownloadDownloadDownload

Parametrics

Parameters / ModelsLM5574MT
LM5574MT
LM5574MT/NOPB
LM5574MT/NOPB
LM5574MTX/NOPB
LM5574MTX/NOPB
Control ModeCurrent ModeCurrent ModeCurrent Mode
Duty Cycle(Max), %959595
Iout(Max), A0.50.50.5
Iq(Typ), mA111
Operating Temperature Range, C-40 to 125-40 to 125-40 to 125
Package GroupTSSOPTSSOPTSSOP
RatingCatalogCatalogCatalog
Regulated Outputs111
Special FeaturesEnable,TrackingEnable,TrackingEnable,Tracking
Switching Frequency(Max), kHz500500500
Switching Frequency(Min), kHz505050
TypeConverterConverterConverter
Vin(Max), V757575
Vin(Min), V666
Vout(Max), V707070
Vout(Min), V1.231.231.23

Eco Plan

LM5574MTLM5574MT/NOPBLM5574MTX/NOPB
RoHSSee ti.comCompliantCompliant

Application Notes

  • Understanding and Applying Current-Mode Control Theory
    PDF, 409 Kb, File published: Aug 19, 2007
  • 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
  • Cost-Effective Transformerless Offline Supply for Light Load Applications (Rev. A)
    PDF, 295 Kb, Revision: A, File published: Jun 16, 2015
    This design idea provides a simple non-isolated AC/DC power supply for low power applications. Thedesign uses a "capacitive-dropper" front-end combined with a LM46000 SIMPLE SWITCHERВ® buckregulator from Texas Instruments. The circuit provides 3.3 V at a minimum of 100 mA from a line supply of90 VAC to 265 VAC. Theory of operation as well as design equations and performance results are given.
  • Input and Output Capacitor Selection
    PDF, 219 Kb, File published: Sep 19, 2005
  • 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.
  • 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.
  • 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.
  • 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.
  • Semiconductor and IC Package Thermal Metrics (Rev. C)
    PDF, 201 Kb, Revision: C, File published: Apr 19, 2016
  • Cap Drop Offline Supply for E-Meters
    PDF, 291 Kb, File published: Jun 16, 2015
    This design idea provides a simple non-isolated AC/DC power supply for low power applications such assmart grid E-meter applications. The design uses a "capacitive-dropper" front-end combined with aLM46000 SIMPLE SWITCHERВ® buck regulator from Texas Instruments. The circuit provides 3.3 V at aminimum of 50 mA from a line supply of 90 VAC to 265 VAC. Theory of operation as well as designequa
  • 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.
  • 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
  • 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
  • Quick Start Guide for a 0.5 Amp Buck Regulator Using The LM5574 and LM25574 (Rev. B)
    PDF, 61 Kb, Revision: B, File published: Apr 23, 2013
    The LM5574 and LM25574 switching regulators feature all of the functions necessary to implement anefficient high voltage buck regulator using a minimum of external components. These easy to useregulators include either a 42V (LM25574) or a 75V (LM5574) N-Channel buck switch with an outputcurrent capability of 0.5 Amps. The operating frequency is programmable from 50kHz up to 1MHz.Protectio
  • 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.
  • 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
  • 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.
  • 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)
EMS supplier