LM2574HV

활성

SIMPLE SWITCHER 0.5A 스텝다운 전압 레귤레이터

지금 주문하기

데이터 시트

document-pdfAcrobat LM2574/LM2574HV SIMPLE SWITCHER® 0.5-A Step-Down Voltage Regulator datasheet (Rev. F) (영어)

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대안 비교

다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능.

LMR36506

활성

4μA IQ의 3V~65V, 0.6A 초소형 동기 벅 컨버터 Higher Fsw, better efficiency, lower EMI and lower IQ.

TPSM5601R5H

활성

60V 입력, 1V~16V 출력, 1.5A 전원 모듈 - 향상된 HotRod™ QFN 패키지 Save board space, simplify design and speed time to market with an integrated-inductor power module.

LM2574HV

활성

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제품 상세 정보

Rating

Catalog

Topology

Buck

Iout (max) (A)

0.5

Vin (max) (V)

60

Vin (min) (V)

4

Vout (max) (V)

37

Vout (min) (V)

3.3

Features

Enable, Over Current Protection

Control mode

Voltage mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.005

Duty cycle (max) (%)

98

Rating

Catalog

Topology

Buck

Iout (max) (A)

0.5

Vin (max) (V)

60

Vin (min) (V)

4

Vout (max) (V)

37

Vout (min) (V)

3.3

Features

Enable, Over Current Protection

Control mode

Voltage mode

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.005

Duty cycle (max) (%)

98

SOIC (NPA)

14

92.8372375 mm² (8.9915 mm × 10.325 mm)

PDIP (P)

8

92.5083 mm² (9.81 mm × 9.43 mm)

New product available: TPS560430, 36-V, 600-mA synchronous step-down converter
3.3-V, 5-V, 12-V, 15-V, and adjustable output versions
Adjustable version output voltage range: 1.23 V to 37 V (57 V for HV version) ±4% maximum over line and load conditions
Specified 0.5-A output current
Wide input voltage range: 40 V, up to 60 V for HV Version
Requires only four 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
Create a custom design using the LM2574 with the WEBENCH^® Power Designer

New product available: TPS560430, 36-V, 600-mA synchronous step-down converter
3.3-V, 5-V, 12-V, 15-V, and adjustable output versions
Adjustable version output voltage range: 1.23 V to 37 V (57 V for HV version) ±4% maximum over line and load conditions
Specified 0.5-A output current
Wide input voltage range: 40 V, up to 60 V for HV Version
Requires only four 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
Create a custom design using the LM2574 with the WEBENCH^® Power Designer

The LM2574xx series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, 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 LM2574xx series offers a high-efficiency replacement for popular three-terminal linear regulators. Because of its high efficiency, the copper traces on the printed-circuit board (PCB) are normally the only heat sinking needed.

A standard series of inductors optimized for use with the LM2574 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 TPS560430 is a newer generation buck converter, being functionally equivalent to LM2574. It offers reduced BOM cost, increased efficiency, and reduced solution size. See the Device Comparison Table to compare specifications. Start WEBENCH Design with TPS560430.

The LM2574xx series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, 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 LM2574xx series offers a high-efficiency replacement for popular three-terminal linear regulators. Because of its high efficiency, the copper traces on the printed-circuit board (PCB) are normally the only heat sinking needed.

A standard series of inductors optimized for use with the LM2574 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 TPS560430 is a newer generation buck converter, being functionally equivalent to LM2574. It offers reduced BOM cost, increased efficiency, and reduced solution size. See the Device Comparison Table to compare specifications. Start WEBENCH Design with TPS560430.

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20개 모두 보기

상위 문서	유형	직함	형식 옵션	날짜
*	데이터 시트	LM2574/LM2574HV SIMPLE SWITCHER® 0.5-A Step-Down Voltage Regulator datasheet (Rev. F)		2020. 4. 17
	애플리케이션 노트	Semiconductor and IC Package Thermal Metrics (Rev. D)	PDF \| HTML	2024. 3. 25
	기술 문서	How to increase system reliability and simplify design using DC/DC converters	PDF \| HTML	2016. 6. 13
	기술 문서	The importance of accurate switching frequency and current limit when selecting bu	PDF \| HTML	2016. 4. 19
	기술 문서	Advantages of leaded packages in robust industrial designs	PDF \| HTML	2016. 3. 8
	애플리케이션 노트	Cost-Effective Transformerless Offline Supply for Light Load Applications (Rev. A)		2015. 6. 16
	애플리케이션 노트	Cap Drop Offline Supply for E-Meters		2015. 6. 16
	애플리케이션 노트	Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A)		2014. 9. 12
	애플리케이션 노트	AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C)		2013. 4. 24
	애플리케이션 노트	AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A)		2013. 4. 23
	애플리케이션 노트	AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A)		2013. 4. 23
	애플리케이션 노트	AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C)		2013. 4. 23
	애플리케이션 노트	AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C)		2013. 4. 23
	애플리케이션 노트	AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A)		2013. 4. 23
	애플리케이션 노트	AN-1197 Selecting Inductors for Buck Converters (Rev. B)		2013. 4. 23
	애플리케이션 노트	AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C)		2013. 4. 23
	애플리케이션 노트	AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B)		2013. 4. 23
	애플리케이션 노트	Input and Output Capacitor Selection		2005. 9. 19
	추가 자료	SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations		2005. 7. 12
	애플리케이션 노트	AN-643 EMI/RFI Board Design (Rev. B)		2004. 5. 3