LM2591HV

AKTIV

SIMPLE SWITCHER-Abwärts-Schaltspannungsregler, 150 kHz, 1 A

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Datenblatt

document-pdfAcrobat LM2591HV SIMPLE SWITCHER Power Converter 150-kHz, 1-A Step-Down Voltage Regulator datasheet (Rev. E) (Englisch) PDF | HTML

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LM2591HV

AKTIV

Jetzt bestellen

Produktdetails

Rating

Catalog

Topology

Buck

Iout (max) (A)

1

Vin (max) (V)

60

Vin (min) (V)

4.5

Vout (max) (V)

57

Vout (min) (V)

3.3

Features

Enable, Over Current Protection

Control mode

Voltage mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.001

Duty cycle (max) (%)

100

Rating

Catalog

Topology

Buck

Iout (max) (A)

1

Vin (max) (V)

60

Vin (min) (V)

4.5

Vout (max) (V)

57

Vout (min) (V)

3.3

Features

Enable, Over Current Protection

Control mode

Voltage mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.001

Duty cycle (max) (%)

100

TO-263 (KTT)

5

154.8384 mm² (10.16 mm × 15.24 mm)

TO-220 (NDH)

5

86.0552 mm² (10.16 mm × 8.47 mm)

3.3-V, 5-V, and Adjustable Output Versions
Adjustable Version Output Voltage Range: 1.2 V
to 57 V ±4% Maximum Over Line and Load
Conditions
Specified 1-A Output Load Current
Available in 5-Pin Package
Input Voltage Range Up to 60 V
150-kHz Fixed Frequency Internal Oscillator
ON and OFF Control
Low Power Standby Mode, I_Q Typically 90 µA
High Efficiency
Thermal Shutdown and Current-Limit Protection

3.3-V, 5-V, and Adjustable Output Versions
Adjustable Version Output Voltage Range: 1.2 V
to 57 V ±4% Maximum Over Line and Load
Conditions
Specified 1-A Output Load Current
Available in 5-Pin Package
Input Voltage Range Up to 60 V
150-kHz Fixed Frequency Internal Oscillator
ON and OFF Control
Low Power Standby Mode, I_Q Typically 90 µA
High Efficiency
Thermal Shutdown and Current-Limit Protection

The LM2591HV series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, and an adjustable output version.

This series of switching regulators is similar to the LM2590HV, but without some of the supervisory and control features of the latter.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, improved line and load specifications, and a fixed-frequency oscillator.

The LM2591HV operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-pin package with several different lead bend options, and a 5-pin surface mount package.

Other features include a specified ±4% tolerance on output voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 90-µA standby current. Self-protection features include a two stage current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.

The LM2591HV series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, and an adjustable output version.

This series of switching regulators is similar to the LM2590HV, but without some of the supervisory and control features of the latter.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, improved line and load specifications, and a fixed-frequency oscillator.

The LM2591HV operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-pin package with several different lead bend options, and a 5-pin surface mount package.

Other features include a specified ±4% tolerance on output voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 90-µA standby current. Self-protection features include a two stage current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.

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Technische Dokumentation

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Top-Dokumentation	Typ	Titel	Format-Optionen
*	Datenblatt	LM2591HV SIMPLE SWITCHER Power Converter 150-kHz, 1-A Step-Down Voltage Regulator datasheet (Rev. E)	PDF \| HTML	27.05.2016
	Anwendungshinweis	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	25.03.2024
	Technischer Artikel	How to increase system reliability and simplify design using DC/DC converters	PDF \| HTML	13.06.2016
	Technischer Artikel	The importance of accurate switching frequency and current limit when selecting bu	PDF \| HTML	19.04.2016
	Technischer Artikel	Advantages of leaded packages in robust industrial designs	PDF \| HTML	08.03.2016
	Anwendungshinweis	Cost-Effective Transformerless Offline Supply for Light Load Applications (Rev. A)		16.06.2015
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	Anwendungshinweis	Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)		12.09.2014
	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-1081 Low-Cost Low-Parts-Count DC/DC Converter With Multiple Outputs (Rev. B)		23.04.2013
	Anwendungshinweis	AN-1197 Selecting Inductors for Buck Converters (Rev. B)		23.04.2013
	Anwendungshinweis	AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)		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

Design und Entwicklung

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