홈 전원 관리 AC/DC 및 DC/DC 컨버터(통합 FET)
홈
전원 관리
AC/DC 및 DC/DC 컨버터(통합 FET)

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 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 500 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 1000 Duty cycle (max) (%) 95 Type Converter
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 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 500 Operating temperature range (°C) -40 to 125 Iq (typ) (µA) 1000 Duty cycle (max) (%) 95 Type Converter
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.
filter 기타 AC/DC 및 DC/DC 컨버터(통합 FET) 찾기
다운로드 스크립트와 함께 비디오 보기 동영상

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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21개 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
EVM User's guide AN-1568 LM5574 Evaluation Board (Rev. C) 2013/04/26
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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