홈 전원 관리 AC/DC & DC/DC converters (integrated FET)
홈
전원 관리
AC/DC & DC/DC converters (integrated FET)

LM25574

활성

42V, 0.5A 스텝다운 스위칭 레귤레이터

지금 주문
데이터시트

LM25574

활성
데이터시트 지금 주문

제품 상세 정보

Iout (max) (A) 0.5 Vin (min) (V) 6 Vin (max) (V) 42 Topology Buck Type Converter Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1000 Features Frequency synchronization, Over Current Protection Control mode current mode Vout (min) (V) 1.23 Vout (max) (V) 40 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.001
Iout (max) (A) 0.5 Vin (min) (V) 6 Vin (max) (V) 42 Topology Buck Type Converter Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1000 Features Frequency synchronization, Over Current Protection Control mode current mode Vout (min) (V) 1.23 Vout (max) (V) 40 Rating Catalog Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.001
TSSOP (PW) 16 32 mm² 5 x 6.4
  • Integrated 42-V, 750-mΩ N-Channel MOSFET
  • Ultra-Wide Input Voltage From 6 V to 42 V
  • Adjustable Output Voltage as Low as 1.225 V
  • 1.5% Feedback Reference Accuracy
  • Operating Frequency Adjustable Between 50 kHz and 1 MHz With Single Resistor
  • Master or Slave Frequency Synchronization
  • Adjustable Soft-Start
  • Emulated Current Mode Control Architecture
  • Wide Bandwidth Error Amplifier
  • Built-In Protection
  • TSSOP-16 Package
  • Create a Custom Design Using the LM25574 With the WEBENCH® Power Designer
  • Integrated 42-V, 750-mΩ N-Channel MOSFET
  • Ultra-Wide Input Voltage From 6 V to 42 V
  • Adjustable Output Voltage as Low as 1.225 V
  • 1.5% Feedback Reference Accuracy
  • Operating Frequency Adjustable Between 50 kHz and 1 MHz With Single Resistor
  • Master or Slave Frequency Synchronization
  • Adjustable Soft-Start
  • Emulated Current Mode Control Architecture
  • Wide Bandwidth Error Amplifier
  • Built-In Protection
  • TSSOP-16 Package
  • Create a Custom Design Using the LM25574 With the WEBENCH® Power Designer

The LM25574 is an easy to use buck regulator which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6 V to 42 V, the LM25574 delivers 0.5-A of continuous output current with an integrated 750-mΩ N-Channel MOSFET. The regulator utilizes 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 50 kHz to 1-MHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM25574 guarantees robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a TSSOP-16 package. The LM25574 is supported by the full suite of WEBENCH® On-Line design tools.

The LM25574 is an easy to use buck regulator which allows design engineers to design and optimize a robust power supply using a minimum set of components. Operating with an input voltage range of 6 V to 42 V, the LM25574 delivers 0.5-A of continuous output current with an integrated 750-mΩ N-Channel MOSFET. The regulator utilizes 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 50 kHz to 1-MHz to allow optimization of size and efficiency. To reduce EMI, a frequency synchronization pin allows multiple IC’s from the LM(2)557x family to self-synchronize or to synchronize to an external clock. The LM25574 guarantees robustness with cycle-by-cycle current limit, short-circuit protection, thermal shut-down, and remote shut-down. The device is available in a TSSOP-16 package. The LM25574 is supported by the full suite of WEBENCH® On-Line design tools.
open-in-new 기타 AC/DC & DC/DC converters (integrated 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
TPS560430 활성 고효율 절전 모드를 갖춘 SIMPLE SWITCHER® 36V, 600mA 벅 레귤레이터 Next-generation 36-V, 600-mA buck regulator with high-efficiency sleep mode.

기술 문서

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
모두 보기20
유형 직함 날짜
* Data sheet LM25574 42-V, 0.5-A Step-Down Switching Regulator datasheet (Rev. H) PDF | HTML 2017/08/23
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
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
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-1577 LM25574 Evaluation Board (Rev. B) 2013/04/24
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.

시뮬레이션 모델

LM25574 Non-Inverting and Inverting PSpice Transient Model (Rev. A)

SNVM293A.ZIP (120 KB) - PSpice Model
다운로드
시뮬레이션 모델

LM25574 Non-Inverting and Inverting Unencrypted PSpice Transient Model

SNVMBA3.ZIP (4 KB) - PSpice Model
다운로드
시뮬레이션 모델

LM25574 PSpice Average Model

SNVM294.ZIP (56 KB) - PSpice Model
다운로드
시뮬레이션 모델

LM25574 Unencrypted PSpice Average Model

SNVM868.ZIP (2 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 다운로드
TSSOP (PW) 16 옵션 보기
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

TI 엔지니어의 기술 지원을 받을 수 있는 TI E2E™ 포럼

포럼 주제 모두 보기(영문)

콘텐츠는 TI 및 커뮤니티 기고자에 의해 "있는 그대로" 제공되며 TI의 사양으로 간주되지 않습니다. 사용 약관을 참조하십시오.

품질, 패키징, TI에서 주문하는 데 대한 질문이 있다면 TI 지원을 방문하세요. ​​​​​​​​​​​​​​

동영상