홈 전력 관리 DC/DC switching regulators DC/DC converters
홈
전력 관리
DC/DC switching regulators
DC/DC converters

LM5574-Q1

활성

75V, 0.5A 스텝다운 스위칭 레귤레이터

지금 주문
데이터 시트

LM5574-Q1

활성
데이터 시트 지금 주문

제품 상세 정보

Rating Automotive Topology Buck Iout (max) (A) 0.5 Vin (max) (V) 75 Vin (min) (V) 6 Vout (max) (V) 70 Vout (min) (V) 1.23 Features Enable, Frequency synchronization, Over Current Protection, Soft Start Adjustable, Tracking Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.001 Duty cycle (max) (%) 95
Rating Automotive Topology Buck Iout (max) (A) 0.5 Vin (max) (V) 75 Vin (min) (V) 6 Vout (max) (V) 70 Vout (min) (V) 1.23 Features Enable, Frequency synchronization, Over Current Protection, Soft Start Adjustable, Tracking Control mode current mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.001 Duty cycle (max) (%) 95
TSSOP (PW) 16 32 mm² 5 x 6.4
  • LM5574-Q1 is an automotive grade product that is AEC-Q100 grade qualified
  • –40°C to + 150°C operating junction temperature
  • Integrated 75V, 750mΩ N-Channel MOSFET
  • Ultra-wide input voltage range from 6V to 75V
  • Adjustable output voltage as low as 1.225V
  • 1.5% feedback reference accuracy
  • Operating frequency adjustable between 50kHz and 500kHz with single resistor
  • Controller or peripheral frequency synchronization
  • Adjustable soft start
  • Emulated current mode control architecture
  • Wide bandwidth error amplifier
  • Built-in protection
  • Package:
    • TSSOP-16
  • Create a custom design using the LM5574-Q1 with the WEBENCH Power Designer
  • LM5574-Q1 is an automotive grade product that is AEC-Q100 grade qualified
  • –40°C to + 150°C operating junction temperature
  • Integrated 75V, 750mΩ N-Channel MOSFET
  • Ultra-wide input voltage range from 6V to 75V
  • Adjustable output voltage as low as 1.225V
  • 1.5% feedback reference accuracy
  • Operating frequency adjustable between 50kHz and 500kHz with single resistor
  • Controller or peripheral frequency synchronization
  • Adjustable soft start
  • Emulated current mode control architecture
  • Wide bandwidth error amplifier
  • Built-in protection
  • Package:
    • TSSOP-16
  • Create a custom design using the LM5574-Q1 with the WEBENCH Power Designer

The LM5574-Q1 is an easy-to-use, buck regulator that allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6V to 75V, the LM5574-Q1 delivers 0.5A of continuous output current with an integrated 750mΩ N-Channel MOSFET. The regulator uses an Emulated Current Mode architecture which provides inherent line regulation, tight load transient response, and ease-of-loop compensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50kHz to 500kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple ICs from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5574-Q1 makes sure of robustness with cycle-by-cycle current limit, short-circuit protection, thermal shutdown, and remote shutdown. The device is available in a 16-pin TSSOP package. The LM5574-Q1 is supported by the full suite of WEBENCH online design tools.

The LM5574-Q1 is an easy-to-use, buck regulator that allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6V to 75V, the LM5574-Q1 delivers 0.5A of continuous output current with an integrated 750mΩ N-Channel MOSFET. The regulator uses an Emulated Current Mode architecture which provides inherent line regulation, tight load transient response, and ease-of-loop compensation without the usual limitation of low-duty cycles associated with current mode regulators. The operating frequency is adjustable from 50kHz to 500kHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple ICs from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM5574-Q1 makes sure of robustness with cycle-by-cycle current limit, short-circuit protection, thermal shutdown, and remote shutdown. The device is available in a 16-pin TSSOP package. The LM5574-Q1 is supported by the full suite of WEBENCH online design tools.
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관심 가지실만한 유사 제품

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
LMR38010-Q1 활성 차량용 SIMPLE SWITCHER ® 4.2V~80V, 1A 동기식 벅 컨버터 Smaller footprint, lower EMI, lower IQ, higher efficiency and spread spectrum.

기술 자료

star =TI에서 선정한 이 제품의 인기 문서
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20개 모두 보기
유형 직함 날짜
* Data sheet LM5574-Q1 75V, 0.5A, Automotive, Step-Down Switching Regulator datasheet (Rev. D) PDF | HTML 2025/04/25
Application note Semiconductor and IC Package Thermal Metrics (Rev. D) PDF | HTML 2024/03/25
White paper Overcoming Challenges in Designing Step-Dwn Reg Apps w/40V Input Voltage (Rev. A) 2018/07/03
Application note Cap Drop Offline Supply for E-Meters 2015/06/16
Application note Cost-Effective Transformerless Offline Supply for Light Load Applications (Rev. A) 2015/06/16
Application note Low EMI Layout Made SIMPLE With LM43600/1/2/3 and LM46000/1/2 (Rev. A) 2014/09/12
Application note AN-1997 Error Amplifier Limitations in High-Performance Regulator Applications (Rev. A) 2013/05/06
Application note AN-2162 Simple Success With Conducted EMI From DC-DC Converters (Rev. C) 2013/04/24
Application note AN-1149 Layout Guidelines for Switching Power Supplies (Rev. C) 2013/04/23
Application note AN-1197 Selecting Inductors for Buck Converters (Rev. B) 2013/04/23
Application note AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013/04/23
Application note AN-1246 Stresses in Wide Input DC-DC Converters (Rev. C) 2013/04/23
Application note AN-1520 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (Rev. B) 2013/04/23
Application note AN-1566 Techniques for Thermal Analysis of Switching Power Supply Designs (Rev. A) 2013/04/23
Application note AN-1889 How to Measure the Loop Transfer Function of Power Supplies (Rev. A) 2013/04/23
Application note AN-2155 Layout Tips for EMI Reduction in DC/ DC Converters (Rev. A) 2013/04/23
Application note Understanding and Applying Current-Mode Control Theory 2007/08/19
Application note Input and Output Capacitor Selection 2005/09/19
More literature SEM1600 Topic 4: Constructing Your Power Supply – Layout Considerations 2005/07/12
Application note AN-643 EMI/RFI Board Design (Rev. B) 2004/05/03

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

LM5574EVAL — 75V, 0.5A 스텝다운 스위칭 레귤레이터 평가 모듈

The LM5574 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM5574 regulator IC. The evaluation board provides a 5V output with a 0.5A current capability. The ultra-wide input voltage ranges (...)

사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

LM5574 Non-Inverting and Inverting PSpice Transient Model (Rev. A)

SNVM310A.ZIP (115 KB) - PSpice Model
다운로드
시뮬레이션 모델

LM5574 PSpice Average Model

SNVM311.ZIP (58 KB) - PSpice Model
다운로드
시뮬레이션 모델

LM5574 Unencrypted PSpice Average Model

SNVM933.ZIP (2 KB) - PSpice Model
다운로드
시뮬레이션 모델

LM5574 Unencrypted PSpice Transient Model (Rev. A)

SNVM934A.ZIP (4 KB) - PSpice Model
다운로드
계산 툴

LM2557X-557XQUICK-CALC — LM(2)557x 빠른 시작 SIMPLE SWITCHER 구성 요소 계산기

다운로드
계산 툴

SIMPLESWITCHER-COMPONENT-CALC — 다운로드 가능한 LM(2)557x 빠른 시작 SIMPLE SWITCHER 구성 요소 계산기

다운로드
패키지 핀 CAD 기호, 풋프린트 및 3D 모델
TSSOP (PW) 16 Ultra Librarian
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

지원 및 교육

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포럼 주제 모두 보기(영문)

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