LM2575HV

Name: LM2575HV
Brand: TI
SKU: LM2575HV
Price: 1.928 USD

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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

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Datenblatt

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Produktdetails

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Buck

Type

Converter

Iout (max) (A)

1

Vin (min) (V)

4

Vin (max) (V)

60

Switching frequency (min) (kHz)

42

Switching frequency (max) (kHz)

63

Features

Enable, Over Current Protection

Control mode

Voltage mode

Vout (min) (V)

3.3

Vout (max) (V)

57

Iq (typ) (µA)

10000

Duty cycle (max) (%)

98

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Buck

Type

Converter

Iout (max) (A)

1

Vin (min) (V)

4

Vin (max) (V)

60

Switching frequency (min) (kHz)

42

Switching frequency (max) (kHz)

63

Features

Enable, Over Current Protection

Control mode

Voltage mode

Vout (min) (V)

3.3

Vout (max) (V)

57

Iq (typ) (µA)

10000

Duty cycle (max) (%)

98

PDIP (NBG)

16

189.051819 mm² 21.7551 x 8.69

SOIC (DW)

24

159.65 mm² 15.5 x 10.3

TO-220 (KC)

5

45.212 mm² 10.16 x 4.45

TO-220 (NDH)

5

86.0552 mm² 10.16 x 8.47

TO-263 (KTT)

5

154.8384 mm² 10.16 x 15.24

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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Alle anzeigen 18

	Typ	Titel		Datum
*	Data sheet	LM1575/LM2575/LM2575HV SIMPLE SWITCHER 1A Step-Down Voltage Regulator datasheet (Rev. E)		03 Apr 2013
	Application note	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	25 Mär 2024
	Application note	Switching regulator fundamentals (Rev. C)	PDF \| HTML	05 Feb 2019
	Application note	Cap Drop Offline Supply for E-Meters		16 Jun 2015
	Application note	Cost-Effective Transformerless Offline Supply for Light Load Applications (Rev. A)		16 Jun 2015
	Application note	Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)		12 Sep 2014
	Application note	AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)		24 Apr 2013
	Application note	AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)		23 Apr 2013
	Application note	AN-1197 Selecting Inductors for Buck Converters (Rev. B)		23 Apr 2013
	Application note	AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)		23 Apr 2013
	Application note	AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)		23 Apr 2013
	Application note	AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)		23 Apr 2013
	Application note	AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)		23 Apr 2013
	Application note	AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)		23 Apr 2013
	Application note	AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)		23 Apr 2013
	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 Mai 2004

Design und Entwicklung

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