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

LM62440-Q1

활성

오토모티브 3V~36V, 4A 저잡음 동기 스텝다운 컨버터

지금 주문
데이터 시트

LM62440-Q1

활성
데이터 시트 지금 주문

제품 상세 정보

Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 2200 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Iq (typ) (µA) 7 Duty cycle (max) (%) 98
Rating Automotive Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 4 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 2200 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Wettable flanks package EMI features Low parasitic Hotrod packaging, Spread Spectrum Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Iq (typ) (µA) 7 Duty cycle (max) (%) 98
VQFN-HR (RJR) 14 14 mm² 4 x 3.5
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +150°C, TJ
  • Functional Safety-Capable
  • Optimized for ultra low EMI requirements
    • HotRod™ package and parallel input path minimize switch node ringing
    • Spread spectrum reduces peak emissions
    • 2.1-MHz and 400-kHz factory options
    • Adjustable SW node rise time
    • Pin selectable FPWM mode for constant frequency at light loads
  • Designed for automotive applications
    • Supports 42-V automotive load dump
    • ±1% total output regulation accuracy
    • VOUT adjustable from 1 V to 95% of VIN, with factory options for 5-V and 3.3-V fixed output voltages
  • High efficiency power conversion at all loads
    • 7-µA no load current at 13.5 VIN, 3.3 VOUT
    • 83% PFM efficiency at 1 mA, 13.5 VIN, 5 VOUT
    • External bias option for improved efficiency
  • Suitable for scalable power supplies
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +150°C, TJ
  • Functional Safety-Capable
  • Optimized for ultra low EMI requirements
    • HotRod™ package and parallel input path minimize switch node ringing
    • Spread spectrum reduces peak emissions
    • 2.1-MHz and 400-kHz factory options
    • Adjustable SW node rise time
    • Pin selectable FPWM mode for constant frequency at light loads
  • Designed for automotive applications
    • Supports 42-V automotive load dump
    • ±1% total output regulation accuracy
    • VOUT adjustable from 1 V to 95% of VIN, with factory options for 5-V and 3.3-V fixed output voltages
  • High efficiency power conversion at all loads
    • 7-µA no load current at 13.5 VIN, 3.3 VOUT
    • 83% PFM efficiency at 1 mA, 13.5 VIN, 5 VOUT
    • External bias option for improved efficiency
  • Suitable for scalable power supplies

The LM62440-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; 42-V tolerance supports load dump for durations of 400 ms. The LM62440-Q1 implements soft recovery from dropout, eliminating overshoot on the output.

The LM62440-Q1 is specifically designed for minimal EMI. The device incorporates pseudorandom spread spectrum, adjustable SW node rise time, a low-EMI VQFN-HR package featuring low switch node ringing, and an optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, either 2.1-MHz or 400-kHz frequency factory options can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, provides exceptional efficiency across the entire load range.

The LM62440-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; 42-V tolerance supports load dump for durations of 400 ms. The LM62440-Q1 implements soft recovery from dropout, eliminating overshoot on the output.

The LM62440-Q1 is specifically designed for minimal EMI. The device incorporates pseudorandom spread spectrum, adjustable SW node rise time, a low-EMI VQFN-HR package featuring low switch node ringing, and an optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, either 2.1-MHz or 400-kHz frequency factory options can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, provides exceptional efficiency across the entire load range.
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
비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀
LM62435-Q1 활성 오토모티브 3V~36V, 3.5A 저 EMI 동기 스텝다운 컨버터 3.5-A current limit

기술 자료

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8개 모두 보기
유형 직함 날짜
* Data sheet LM62440-Q1 Automotive 3-V to 36-V, 4-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. E) PDF | HTML 2022/04/18
Functional safety information LM62440-Q1 Functional Safety, FIT Rate, Failure Mode Distribution, and Pin FMA (Rev. A) PDF | HTML 2022/05/17
Application note How to Migrate Between LM614xx and LM624xx Product Families PDF | HTML 2021/11/01
Technical article Introduction to EMI: Standards, causes and mitigation techniques PDF | HTML 2021/04/21
Selection guide Buck Converter Quick Reference Guide (Rev. B) 2021/04/08
Technical article Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev 2020/11/18
Technical article Optimizing flip-chip IC thermal performance in automotive designs PDF | HTML 2019/12/11
EVM User's guide LM62440-Q1 EVM User's Guide 2018/06/22

설계 및 개발

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

평가 보드

LM62440EVM — 36V, 저 EMI 4A, 5V 동기, 2MHz, 스텝다운 컨버터 평가 모듈

The LM62440 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM62440 synchronous step-down converter.  The LM62440 provides exceptional efficiency, low Iq, and low EMI in small solution size.
사용 설명서: PDF
TI.com에서 구매 불가
평가 보드

LP877451Q1EVM — LP8774x-Q1 ADAS PMIC 저잡음 구성 3-벅 및 5V 부스트 평가 모듈

LP8774x-Q1 디바이스는 다양한 차량용 및 산업용 레이더 애플리케이션에서 AWR 및 IWR MMIC의 전원 관리 요구 사항을 충족하도록 설계되었습니다. 이 디바이스에는 세 개의 스텝다운 DC/DC 컨버터와 5V 부스트 컨버터 및 1.8V/3.3V LDO가 있습니다. LDO는 부스트에서 전원을 공급하며 xWR 및 주변 기기 IO 공급을 위해 설계되었습니다. 이 디바이스는 SPI 직렬 인터페이스에 의해 제어되고 활성화 신호로 제어됩니다.

스텝다운 DC/DC 컨버터는 17.6MHz, 8.8MHz 또는 4.4MHz의 프로그래밍 가능한 (...)

사용 설명서: PDF | HTML
View Options
시뮬레이션 모델

LM62440APP-Q1 PSpice Transient Model

SNVMC36.ZIP (142 KB) - PSpice Model
다운로드
시뮬레이션 모델

LM62440BPP-Q1 PSpice Transient Model

SNVMC37.ZIP (280 KB) - PSpice Model
다운로드
시뮬레이션 모델

LM62440CPP-Q1 PSpice Transient Model

SNVMC38.ZIP (280 KB) - PSpice Model
다운로드
PCB 레이아웃

LM62440 EVM Design files Upload

SNVR477.ZIP (3141 KB)
다운로드
패키지 핀 CAD 기호, 풋프린트 및 3D 모델
VQFN-HR (RJR) 14 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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