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LM2586

AKTIV

4-V bis 40-V, 3-A-Flyback-VIN-Aufwärtsregler mit breitem Eingangsspannungsbereich und Frequenzsynchr

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Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung.
LM5158 AKTIV Aufwärts-, Flyback- & SEPIC-Wandler, 3 A, 85 V, 2,2 MHz, großer VIN-Bereich, mit Dual-Random-Spread- Newer device with higher Vout capability and higher switch current

LM2586

AKTIV
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Produktdetails

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-263 (KTW) 7 153.924 mm² (10.1 mm × 15.24 mm) TO-220 (NDZ) 7 82.6008 mm² (10.16 mm × 8.13 mm)
  • 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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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt LM2586 4-V to 40-V, 3-A Step-Up Wide VIN Flyback Regulator datasheet (Rev. E) PDF | HTML 04.06.2019
Anwendungshinweis Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 25.03.2024
Anwendungshinweis Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML 28.10.2022
Auswahlhilfe Power Management Guide 2018 (Rev. R) 25.06.2018
Technischer Artikel Quantifying the value of wide VIN PDF | HTML 15.06.2016
Technischer Artikel DC/DC converter datasheets – System losses demystified PDF | HTML 25.04.2016
Technischer Artikel DC/DC converter datasheets – System efficiency demystified PDF | HTML 18.04.2016
Anwendungshinweis Inverted SEPIC Made SIMPLE 31.07.2015
Anwendungshinweis Softstart Using Constant Current Constant Voltage Approach 24.07.2015
Anwendungshinweis Working With Boost Converters 15.06.2015
Anwendungshinweis AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 24.04.2013
Anwendungshinweis AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 23.04.2013
Anwendungshinweis AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 23.04.2013
Anwendungshinweis AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 23.04.2013
Anwendungshinweis AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 23.04.2013
Anwendungshinweis AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 23.04.2013
Anwendungshinweis AN-1082 Adjust or Synchronize LM2586/88 Switching Frequency (Rev. B) 23.04.2013
Anwendungshinweis AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 23.04.2013
Anwendungshinweis Simple Techniques Minimize Cross-Coupling in Distributed Power Systems 21.03.2007
Anwendungshinweis Input and Output Capacitor Selection 19.09.2005
Weitere Dokumente SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 12.07.2005
Anwendungshinweis AN-643 EMI/RFI Board Design (Rev. B) 03.05.2004
Anwendungshinweis Understanding Boost Power Stages In Switchmode Power Supplies 04.03.1999

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Berechnungstool

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

Dieses Tool unterstützt Stromversorgungstechniker bei der Auswahl der richtigen isolierten DC-DC-Topologie anhand der Spezifikationen. Je nach gewählter Topologie empfiehlt der Rechner auch den richtigen IC für das Design.

Unterstützte Produkte und Hardware
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
TO-263 (KTW) 7 Ultra Librarian
TO-220 (NDZ) 7 Ultra Librarian
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