LM2575HV

AKTIV

SIMPLE SWITCHER 1-A-Abwärts-Spannungsregler

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Datenblatt

document-pdfAcrobat LM1575/LM2575/LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator datasheet (Rev. E) (Englisch)

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LM2575HV

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

Topology

Buck

Iout (max) (A)

1

Vin (max) (V)

60

Vin (min) (V)

4

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)

0.01

Duty cycle (max) (%)

98

Rating

Catalog

Topology

Buck

Iout (max) (A)

1

Vin (max) (V)

60

Vin (min) (V)

4

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)

0.01

Duty cycle (max) (%)

98

TO-220 (NDH)

5

86.0552 mm² (10.16 mm × 8.47 mm)

TO-220 (KC)

5

45.212 mm² (10.16 mm × 4.45 mm)

TO-263 (KTT)

5

154.8384 mm² (10.16 mm × 15.24 mm)

SOIC (DW)

24

159.65 mm² (15.5 mm × 10.3 mm)

PDIP (NBG)

16

189.051819 mm² (21.7551 mm × 8.69 mm)

3.3V, 5V, 12V, 15V, and Adjustable Output Versions
Adjustable Version Output Voltage Range,
- 1.23V to 37V (57V for HV Version) ±4% Max Over
- Line and Load Conditions
Specified 1A Output Current
Wide Input Voltage Range, 40V up to 60V for HV Version
Requires Only 4 External Components
52 kHz Fixed Frequency Internal Oscillator
TTL Shutdown Capability, Low Power Standby Mode
High Efficiency
Uses Readily Available Standard Inductors
Thermal Shutdown and Current Limit Protection
P⁺ Product Enhancement Tested

All trademarks are the property of their respective owners.

3.3V, 5V, 12V, 15V, and Adjustable Output Versions
Adjustable Version Output Voltage Range,
- 1.23V to 37V (57V for HV Version) ±4% Max Over
- Line and Load Conditions
Specified 1A Output Current
Wide Input Voltage Range, 40V up to 60V for HV Version
Requires Only 4 External Components
52 kHz Fixed Frequency Internal Oscillator
TTL Shutdown Capability, Low Power Standby Mode
High Efficiency
Uses Readily Available Standard Inductors
Thermal Shutdown and Current Limit Protection
P⁺ Product Enhancement Tested

All trademarks are the property of their respective owners.

The LM2575 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version.

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

The LM2575 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required.

A standard series of inductors optimized for use with the LM2575 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a specified ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

The LM2575 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version.

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

The LM2575 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required.

A standard series of inductors optimized for use with the LM2575 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a specified ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

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Technische Dokumentation

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Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Datenblatt	LM1575/LM2575/LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator datasheet (Rev. E)		03.04.2013
	Anwendungshinweis	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	25.03.2024
	Anwendungshinweis	Switching regulator fundamentals (Rev. C)	PDF \| HTML	05.02.2019
	Anwendungshinweis	Cost-Effective Transformerless Offline Supply for Light Load Applications (Rev. A)		16.06.2015
	Anwendungshinweis	Cap Drop Offline Supply for E-Meters		16.06.2015
	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-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	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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