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

LM61440-Q1

활성

오토모티브 3V~36V, 4A 저잡음 동기 스텝다운 컨버터

지금 주문
데이터시트

LM61440-Q1

활성
데이터시트 지금 주문

제품 상세 정보

Iout (max) (A) 4 Vin (min) (V) 3 Vin (max) (V) 36 Topology Buck Type Converter Switching frequency (min) (kHz) 200 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 Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Rating Automotive Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000008
Iout (max) (A) 4 Vin (min) (V) 3 Vin (max) (V) 36 Topology Buck Type Converter Switching frequency (min) (kHz) 200 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 Control mode current mode Vout (min) (V) 1 Vout (max) (V) 34 Rating Automotive Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000008
VQFN-HR (RJR) 14 14 mm² 4 x 3.5
  • AEC-Q100 qualified with the following results:
    • Temperature grade 1: –40°C to 150°C, TJ
  • Functional Safety-Capable
  • Optimized for ultra-low EMI requirements
    • HotRod package minimizes switch node ringing
    • Parallel input path minimizes parasitic inductance
    • Spread spectrum reduces peak emissions
    • Adjustable SW node rise time
  • Designed for automotive applications
    • Supports 42-V automotive load dump
    • ±1% total output regulation accuracy
    • VOUT adjustable from 1 V to 95% of VIN
    • 0.3-V dropout with 3-A load (typical)
  • 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
    • Pin compatible with:
  • AEC-Q100 qualified with the following results:
    • Temperature grade 1: –40°C to 150°C, TJ
  • Functional Safety-Capable
  • Optimized for ultra-low EMI requirements
    • HotRod package minimizes switch node ringing
    • Parallel input path minimizes parasitic inductance
    • Spread spectrum reduces peak emissions
    • Adjustable SW node rise time
  • Designed for automotive applications
    • Supports 42-V automotive load dump
    • ±1% total output regulation accuracy
    • VOUT adjustable from 1 V to 95% of VIN
    • 0.3-V dropout with 3-A load (typical)
  • 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
    • Pin compatible with:

The LM61440-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; tolerant of 42 V, easing input surge protection design. The LM61440-Q1 implements soft recovery from dropout eliminating overshoot on the output.

The LM61440-Q1 is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be set or synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency 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, ensures exceptional efficiency across the entire load range.

The LM61440-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; tolerant of 42 V, easing input surge protection design. The LM61440-Q1 implements soft recovery from dropout eliminating overshoot on the output.

The LM61440-Q1 is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be set or synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency 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, ensures exceptional efficiency across the entire load range.
open-in-new 기타 AC/DC & DC/DC converters (integrated FET) 찾기
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관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치보다 업그레이드된 기능을 지원하는 즉각적 대체품
LM61435-Q1 활성 오토모티브 3V~36V, 3.5A 동기 스텝다운 컨버터 Automotive version with 3.5-A rating
비교 대상 장치와 동일한 기능을 지원하는 핀 대 핀
LM61430-Q1 활성 오토모티브 3V~36V, 3A 저잡음 동기 스텝다운 컨버터 Lower load current, but pin-to-pin

기술 문서

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모두 보기7
유형 직함 날짜
* Data sheet LM61440-Q1Automotive 3-V to 36-V, 4-A, Low EMI Synchronous Step-Down Converter datasheet (Rev. C) PDF | HTML 2021/06/22
Application note How to Migrate Between LM614xx and LM624xx Product Families PDF | HTML 2021/11/01
Functional safety information LM614xx-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. B) PDF | HTML 2021/09/15
EVM User's guide LM61460-Q1 EVM User's Guide (Rev. D) PDF | HTML 2021/07/30
Technical article Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev 2020/11/18
Functional safety information FIT Rate, Failure Mode Distribution LM61440 Q1 2020/03/31
Technical article Optimizing flip-chip IC thermal performance in automotive designs PDF | HTML 2019/12/11

설계 및 개발

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

평가 보드

LM61460EVM — 36V, 저 EMI 6A, 5V 동기, 400kHz, 스텝다운 컨버터 평가 모듈

The LM61460 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM61460 synchronous step-down converter.  The LM61460 provides exceptional efficiency, low IQ, and low EMI in small solution size.
사용 설명서: PDF | HTML
옵션 보기
시뮬레이션 모델

LM61440AAN-Q1 PSpice Transient Model

SNVMBZ0.ZIP (142 KB) - PSpice Model
다운로드
시뮬레이션 모델

LM61440AAS-Q1 PSpice Transient Model

SNVMBZ1.ZIP (143 KB) - PSpice Model
다운로드
시뮬레이션 모델

LM61440AFS-Q1 PSpice Transient Model

SNVMBY9.ZIP (147 KB) - PSpice Model
다운로드
PCB 레이아웃

LM61460 EVM Design Files

SNVR478.ZIP (5000 KB)
다운로드
패키지 핀 다운로드
VQFN-HR (RJR) 14 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)

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