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DC/DC switching regulators
DC/DC converters

LM2586

ACTIVO

Regulador de retorno con entrada de tensión amplia elevador de 4 V a 40 V y 3 A con sincronización d

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Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
LM5158 ACTIVO Convertidor elevador, de retorno y SEPIC con VIN amplia de 3 A, 85 V y 2.2 MHz y amplio espectro ale Newer device with higher Vout capability and higher switch current

LM2586

ACTIVO
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Detalles del producto

Rating Catalog Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 60 Vout (min) (V) 1.23 Switch current limit (typ) (A) 4 Features Enable, Frequency synchronization, Nonsynchronous rectification Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.011 Duty cycle (max) (%) 98
Rating Catalog Topology Boost, Flyback, Forward, SEPIC Vin (max) (V) 40 Vin (min) (V) 4 Vout (max) (V) 60 Vout (min) (V) 1.23 Switch current limit (typ) (A) 4 Features Enable, Frequency synchronization, Nonsynchronous rectification Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.011 Duty cycle (max) (%) 98
TO-220 (NDZ) 7 82.6008 mm² 10.16 x 8.13 TO-263 (KTW) 7 153.924 mm² 10.1 x 15.24
  • Requires Few External Components
  • Family of Standard Inductors and Transformers
  • NPN Output Switches 3 A, Can Stand Off 65 V
  • Wide Input Voltage Range: 4 V to 40 V
  • Adjustable Switching Frequency: 100 kHz to 200 kHz
  • External Shutdown Capability
  • Draws Less Than 60 µA When Shut Down
  • Frequency Synchronization
  • Current-mode Operation for Improved Transient Response, Line Regulation, and Current Limit
  • Internal Soft-start Function Reduces In-rush Current During Start-up
  • Output Transistor Protected by Current Limit, Undervoltage Lockout, and Thermal Shutdown
  • System Output Voltage Tolerance of ±4% Maximum Over Line and Load Conditions
  • Create a Custom Design Using the LM2586 With the WEBENCH® Power Designer
  • Requires Few External Components
  • Family of Standard Inductors and Transformers
  • NPN Output Switches 3 A, Can Stand Off 65 V
  • Wide Input Voltage Range: 4 V to 40 V
  • Adjustable Switching Frequency: 100 kHz to 200 kHz
  • External Shutdown Capability
  • Draws Less Than 60 µA When Shut Down
  • Frequency Synchronization
  • Current-mode Operation for Improved Transient Response, Line Regulation, and Current Limit
  • Internal Soft-start Function Reduces In-rush Current During Start-up
  • Output Transistor Protected by Current Limit, Undervoltage Lockout, and Thermal Shutdown
  • System Output Voltage Tolerance of ±4% Maximum Over Line and Load Conditions
  • Create a Custom Design Using the LM2586 With the WEBENCH® Power Designer

The LM2586 series of regulators are monolithic integrated circuits specifically designed for flyback, step-up (boost), and forward converter applications. The device is available in 4 different output voltage versions: 3.3 V, 5 V, 12 V, and adjustable.

Requiring a minimum number of external components, these regulators are cost effective, and simple to use. Included in the datasheet are typical circuits of boost and flyback regulators. Also listed are selector guides for diodes and capacitors and a family of standard inductors and flyback transformers designed to work with these switching regulators.

The power switch is a 3-A NPN device that can stand-off 65 V. Protecting the power switch are current and thermal limiting circuits, and an undervoltage lockout circuit. This IC contains an adjustable frequency oscillator that can be programmed up to 200 kHz. The oscillator can also be synchronized with other devices, so that multiple devices can operate at the same switching frequency.

Other features include soft start mode to reduce in-rush current during start up, and current mode control for improved rejection of input voltage and output load transients and cycle-by-cycle current limiting. The device also has a shutdown pin, so that it can be turned off externally. An output voltage tolerance of ±4%, within specified input voltages and output load conditions, is ensured for the power supply system.

The LM2586 series of regulators are monolithic integrated circuits specifically designed for flyback, step-up (boost), and forward converter applications. The device is available in 4 different output voltage versions: 3.3 V, 5 V, 12 V, and adjustable.

Requiring a minimum number of external components, these regulators are cost effective, and simple to use. Included in the datasheet are typical circuits of boost and flyback regulators. Also listed are selector guides for diodes and capacitors and a family of standard inductors and flyback transformers designed to work with these switching regulators.

The power switch is a 3-A NPN device that can stand-off 65 V. Protecting the power switch are current and thermal limiting circuits, and an undervoltage lockout circuit. This IC contains an adjustable frequency oscillator that can be programmed up to 200 kHz. The oscillator can also be synchronized with other devices, so that multiple devices can operate at the same switching frequency.

Other features include soft start mode to reduce in-rush current during start up, and current mode control for improved rejection of input voltage and output load transients and cycle-by-cycle current limiting. The device also has a shutdown pin, so that it can be turned off externally. An output voltage tolerance of ±4%, within specified input voltages and output load conditions, is ensured for the power supply system.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Fecha
* Data sheet LM2586 4-V to 40-V, 3-A Step-Up Wide VIN Flyback Regulator datasheet (Rev. E) PDF | HTML 04 jun 2019
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 25 mar 2024
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML 28 oct 2022
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Technical article Quantifying the value of wide VIN PDF | HTML 15 jun 2016
Technical article DC/DC converter datasheets – System losses demystified PDF | HTML 25 abr 2016
Technical article DC/DC converter datasheets – System efficiency demystified PDF | HTML 18 abr 2016
Application note Inverted SEPIC Made SIMPLE 31 jul 2015
Application note Softstart Using Constant Current Constant Voltage Approach 24 jul 2015
Application note Working With Boost Converters 15 jun 2015
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 24 abr 2013
Application note AN-1082 Adjust or Synchronize LM2586/88 Switching Frequency (Rev. B) 23 abr 2013
Application note AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 23 abr 2013
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 23 abr 2013
Application note AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 23 abr 2013
Application note AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 23 abr 2013
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 23 abr 2013
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 23 abr 2013
Application note Simple Techniques Minimize Cross-Coupling in Distributed Power Systems 21 mar 2007
Application note Input and Output Capacitor Selection 19 sep 2005
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 12 jul 2005
Application note AN-643 EMI/RFI Board Design (Rev. B) 03 may 2004
Application note Understanding Boost Power Stages In Switchmode Power Supplies 04 mar 1999

Diseño y desarrollo

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Herramienta de cálculo

FLYBUCK-FLYBACK-DESIGN-CALC — Flybuck / Flyback Calculator

This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.

Productos y hardware compatibles

Productos y hardware compatibles
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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
TO-220 (NDZ) 7 Ultra Librarian
TO-263 (KTW) 7 Ultra Librarian
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Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL)/reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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