Datasheet Texas Instruments LM5574 — Ficha de datos

Fabricante	Texas Instruments
Serie	LM5574

Hojas de datos

Precios

Estado

Embalaje

Paramétricos

Parameters / Models	LM5574MT	LM5574MT/NOPB	LM5574MTX/NOPB
Control Mode	Current Mode	Current Mode	Current Mode
Duty Cycle(Max), %	95	95	95
Iout(Max), A	0.5	0.5	0.5
Iq(Typ), mA	1	1	1
Operating Temperature Range, C	-40 to 125	-40 to 125	-40 to 125
Package Group	TSSOP	TSSOP	TSSOP
Rating	Catalog	Catalog	Catalog
Regulated Outputs	1	1	1
Special Features	Enable,Tracking	Enable,Tracking	Enable,Tracking
Switching Frequency(Max), kHz	500	500	500
Switching Frequency(Min), kHz	50	50	50
Type	Converter	Converter	Converter
Vin(Max), V	75	75	75
Vin(Min), V	6	6	6
Vout(Max), V	70	70	70
Vout(Min), V	1.23	1.23	1.23

Plan ecológico

Notas de aplicación

• Descargar
  Understanding and Applying Current-Mode Control Theory
  PDF, 409 Kb, Archivo publicado: agosto 19, 2007
• Descargar
  AN-643 EMI/RFI Board Design (Rev. B)
  PDF, 742 Kb, Revisión: B, Archivo publicado: mayo 3, 2004
  Application Note 643 EMI/RFI Board Design
• Descargar
  Cost-Effective Transformerless Offline Supply for Light Load Applications (Rev. A)
  PDF, 295 Kb, Revisión: A, Archivo publicado: 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.
• Descargar
  Input and Output Capacitor Selection
  PDF, 219 Kb, Archivo publicado: sept 19, 2005
• Descargar
  AN-1197 Selecting Inductors for Buck Converters (Rev. B)
  PDF, 558 Kb, Revisión: B, Archivo publicado: abr 23, 2013
  This application report provides design information to help select an off-the-shelf inductor for anycontinuous-mode buck converter application.
• Descargar
  AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)
  PDF, 3.6 Mb, Revisión: A, Archivo publicado: abr 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.
• Descargar
  AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)
  PDF, 1.4 Mb, Revisión: A, Archivo publicado: abr 23, 2013
  This application note provides thermal power analysis techniques for analyzing the power IC.
• Descargar
  AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)
  PDF, 2.7 Mb, Revisión: A, Archivo publicado: abr 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.
• Descargar
  Semiconductor and IC Package Thermal Metrics (Rev. C)
  PDF, 201 Kb, Revisión: C, Archivo publicado: abr 19, 2016
• Descargar
  Cap Drop Offline Supply for E-Meters
  PDF, 291 Kb, Archivo publicado: 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
• Descargar
  AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A)
  PDF, 153 Kb, Revisión: A, Archivo publicado: mayo 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.
• Descargar
  Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)
  PDF, 512 Kb, Revisión: A, Archivo publicado: sept 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
• Descargar
  AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)
  PDF, 82 Kb, Revisión: C, Archivo publicado: abr 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
• Descargar
  Quick Start Guide for a 0.5 Amp Buck Regulator Using The LM5574 and LM25574 (Rev. B)
  PDF, 61 Kb, Revisión: B, Archivo publicado: abr 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
• Descargar
  AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)
  PDF, 374 Kb, Revisión: C, Archivo publicado: abr 23, 2013
  This application report provides SIMPLE SWITCHER™ PCB layout guidelines.
• Descargar
  AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)
  PDF, 2.5 Mb, Revisión: C, Archivo publicado: abr 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
• Descargar
  AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)
  PDF, 427 Kb, Revisión: C, Archivo publicado: abr 23, 2013
  This application note discusses stresses in wide input DC-DC converters.
• Descargar
  AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)
  PDF, 9.2 Mb, Revisión: B, Archivo publicado: abr 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

Linea modelo

Clasificación del fabricante

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