Datasheet Texas Instruments LM2574 — Даташит

Производитель	Texas Instruments
Серия	LM2574

Datasheets

Цены

Купить LM2574 на РадиоЛоцман.Цены — от 9.84 до 295 ₽ 74 предложений от 35 поставщиков Импульсный понижающий DC-DC стабилизатор, регулируемый, 4.75В-40В (Vin), 1.23В-37В, 500мА, DIP-8
ЗУМ-СМД Россия	LM2574MX-12 Texas Instruments	9.84 ₽	Купить
Стандарт СИЗ Россия	LM2574N-ADJG ON Semiconductor	38 ₽	Купить
ЭлектроПласт- Екатеринбург Россия	LM2574HVM50	по запросу	Купить
Acme Chip Весь мир	LM2574MX-ADJ/NOPB Texas Instruments	по запросу	Купить

Статус

Корпус / Упаковка / Маркировка

Параметры

Parameters / Models	LM2574M-12	LM2574M-12/NOPB	LM2574M-3.3/NOPB	LM2574M-5.0	LM2574M-5.0/NOPB	LM2574M-ADJ	LM2574M-ADJ/NOPB	LM2574MX-12/NOPB	LM2574MX-3.3/NOPB	LM2574MX-5.0	LM2574MX-5.0/NOPB	LM2574MX-ADJ	LM2574MX-ADJ/NOPB	LM2574N-12/NOPB	LM2574N-3.3/NOPB	LM2574N-5.0/NOPB	LM2574N-ADJ/NOPB
Approx. Price (US$)	1.04 | 1ku											1.04 | 1ku
Control Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode	Voltage Mode
Duty Cycle(Max), %		98	98	98	98	98	98	98	98	98	98		98	98	98	98	98
Duty Cycle(Max)(%)	98											98
Iout(Max), A		0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5		0.5	0.5	0.5	0.5	0.5
Iout(Max)(A)	0.5											0.5
Iq(Typ), мА		5	5	5	5	5	5	5	5	5	5		5	5	5	5	5
Iq(Typ)(mA)	5											5
Рабочий диапазон температур, C		от -40 до 125	от -40 до 125	от -40 до 125	от -40 до 125	от -40 до 125	от -40 до 125	от -40 до 125	от -40 до 125	от -40 до 125	от -40 до 125		от -40 до 125	от -40 до 125	от -40 до 125	от -40 до 125	от -40 до 125
Operating Temperature Range(C)	-40 to 125											-40 to 125
Package Group	SOIC	SOIC	SOIC	SOIC	SOIC	SOIC	SOIC	SOIC	SOIC	SOIC	SOIC	SOIC	SOIC	PDIP	PDIP	PDIP	PDIP
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Regulated Outputs		1	1	1	1	1	1	1	1	1	1		1	1	1	1	1
Regulated Outputs(#)	1											1
Special Features	Enable	Enable	Enable	Enable	Enable	Enable	Enable	Enable	Enable	Enable	Enable	Enable	Enable	Enable	Enable	Enable	Enable
Switching Frequency(Max), kHz		52	52	52	52	52	52	52	52	52	52		52	52	52	52	52
Switching Frequency(Max)(kHz)	52											52
Switching Frequency(Min), kHz		52	52	52	52	52	52	52	52	52	52		52	52	52	52	52
Switching Frequency(Min)(kHz)	52											52
Тип	Converter	Converter	Converter	Converter	Converter	Converter	Converter	Converter	Converter	Converter	Converter	Converter	Converter	Converter	Converter	Converter	Converter
Vin(Max), В		40	40	40	40	40	40	40	40	40	40		40	40	40	40	40
Vin(Max)(V)	40											40
Vin(Min), В		4	4	4	4	4	4	4	4	4	4		4	4	4	4	4
Vin(Min)(V)	4											4
Vout(Max), В		37	37	37	37	37	37	37	37	37	37		37	37	37	37	37
Vout(Max)(V)	37											37
Vout(Min), В		3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3		3.3	3.3	3.3	3.3	3.3
Vout(Min)(V)	3.3											3.3

Экологический статус

Application Notes

• Скачать
  AN-643 EMI/RFI Board Design (Rev. B)
  PDF, 742 Кб, Версия: B, Файл опубликован: 3 май 2004
  Application Note 643 EMI/RFI Board Design
• Скачать
  Input and Output Capacitor Selection
  PDF, 219 Кб, Файл опубликован: 19 сен 2005
• Скачать
  AN-1197 Selecting Inductors for Buck Converters (Rev. B)
  PDF, 558 Кб, Версия: B, Файл опубликован: 23 апр 2013
  This application report provides design information to help select an off-the-shelf inductor for anycontinuous-mode buck converter application.
• Скачать
  AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)
  PDF, 3.6 Мб, Версия: A, Файл опубликован: 23 апр 2013
  This application note will explore how the layout of your DC/DC power supply can significantly affect theamount of EMI that it produces. It will discuss several variations of a layout analyze the results andprovide answers to some common EMI questions such whether or not to use a shielded inductor.
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  AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)
  PDF, 1.4 Мб, Версия: A, Файл опубликован: 23 апр 2013
  This application note provides thermal power analysis techniques for analyzing the power IC.
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  AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)
  PDF, 2.7 Мб, Версия: A, Файл опубликован: 23 апр 2013
  This application report shows how to measure the critical points of a bode plot with only an audiogenerator (or simple signal generator) and an oscilloscope. The method is explained in an easy to followstep-by-step manner so that a power supply designer can start performing these measurements in a shortamount of time.
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  Semiconductor and IC Package Thermal Metrics (Rev. C)
  PDF, 201 Кб, Версия: C, Файл опубликован: 19 апр 2016
• Скачать
  Buck Converters Provide a Battery Charger and System Power
  PDF, 61 Кб, Файл опубликован: 21 мар 2007
• Скачать
  Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)
  PDF, 512 Кб, Версия: A, Файл опубликован: 12 сен 2014
  Printed Circuit Board (PCB) layout for Switched Mode Power Supplies (SMPS) is critical to achieve proper converter operation good thermal performance and excellent radiated EMI performance. Optimized board layout for low radiated EMI is made very simple by the package and pin arrangement of the SIMPLE SWITCHER Synchronous Buck Converter family LM4360x and LM4600x
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  AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)
  PDF, 82 Кб, Версия: C, Файл опубликован: 23 апр 2013
  When designing a high frequency switching regulated power supply layout is very important. Using agood layout can solve many problems associated with these types of supplies. The problems due to a badlayout are often seen at high current levels and are usually more obvious at large input to output voltagedifferentials. Some of the main problems are loss of regulation at high output current
• Скачать
  AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)
  PDF, 374 Кб, Версия: C, Файл опубликован: 23 апр 2013
  This application report provides SIMPLE SWITCHER™ PCB layout guidelines.
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  AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)
  PDF, 2.5 Мб, Версия: C, Файл опубликован: 24 апр 2013
  Electromagnetic Interference (EMI) is an unwanted effect between two electrical systems as a result ofeither electromagnetic radiation or electromagnetic conduction. EMI is the major adverse effect caused bythe application of switch-mode power supplies (SMPS). In switching power supplies EMI noise isunavoidable due to the switching actions of the semiconductor devices and resulting disconti
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  AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)
  PDF, 427 Кб, Версия: C, Файл опубликован: 23 апр 2013
  This application note discusses stresses in wide input DC-DC converters.
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  AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)
  PDF, 9.2 Мб, Версия: B, Файл опубликован: 23 апр 2013
  This thermal application report provides guidelines for the optimal board layout to achieve the best thermalresistance for exposed packages. The thermal resistance between junction-to-ambient (ОёJA) is highlydependent on the PCB (Printed Circuit Board) design factors. This becomes more critical for packageshaving very low thermal resistance between junction-to-case such as exposed pad TSSOP
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  Switching Regulator Fundamentals (Rev. A)
  PDF, 324 Кб, Версия: A, Файл опубликован: 23 сен 2016
  Theswitchingregulatoris increasingin popularitybecauseit offersthe advantagesof higherpowerconversionefficiencyand increaseddesignflexibility(multipleoutputvoltagesof differentpolaritiescan begeneratedfroma singleinputvoltage).

Модельный ряд

Классификация производителя

• Semiconductors> Power Management> Non-isolated DC/DC Switching Regulator> Step-Down (Buck)> Buck Converter (Integrated Switch)