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

LMQ66420

활성

1.5µA IQ를 지원하는 36V, 2A 저 EMI 동기 스텝다운 컨버터

지금 주문
데이터 시트

LMQ66420

활성
데이터 시트 지금 주문

제품 상세 정보

Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Fixed Output, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification Control mode current mode Vout (min) (V) 1 Vout (max) (V) 35 Iq (typ) (µA) 1.5 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 36 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Fixed Output, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Spread Spectrum, Synchronous Rectification Control mode current mode Vout (min) (V) 1 Vout (max) (V) 35 Iq (typ) (µA) 1.5 Duty cycle (max) (%) 98
VQFN-FCRLF (RXB) 14 6.76 mm² 2.6 x 2.6
  • Functional Safety-Capable
  • Designed for industrial applications:
    • Junction temperature range –40°C to +150°C
    • NC pin between critical pins for better reliability
    • Best in-class pin FMEA
    • Input transient protection up to 42 V
    • Wide input voltage range after start-up: 2.7 V (falling threshold) to 36 V
    • Adjustable output up to 95% of V IN, 3.3-V, and 5-V fixed V OUT options available
  • Optimized for low EMI requirements:
    • Integrated bypass and boot capacitors reduce EMI
    • Dual Random Spread Spectrum reduces peak emissions
    • Enhanced HotRod™ QFN package minimizes switch node ringing
    • Adjustable F SW: 200 kHz – 2.2 MHz with RT pin
  • Greater than 85% efficiency at 1 mA
  • Miniature solution size and low component cost:
    • Integrated input bypass capacitors and bootstrap capacitor reducing EMI
    • 2.6-mm × 2.6-mm enhanced HotRod™ QFN package with wettable flanks
    • Internal control loop compensation
  • Functional Safety-Capable
  • Designed for industrial applications:
    • Junction temperature range –40°C to +150°C
    • NC pin between critical pins for better reliability
    • Best in-class pin FMEA
    • Input transient protection up to 42 V
    • Wide input voltage range after start-up: 2.7 V (falling threshold) to 36 V
    • Adjustable output up to 95% of V IN, 3.3-V, and 5-V fixed V OUT options available
  • Optimized for low EMI requirements:
    • Integrated bypass and boot capacitors reduce EMI
    • Dual Random Spread Spectrum reduces peak emissions
    • Enhanced HotRod™ QFN package minimizes switch node ringing
    • Adjustable F SW: 200 kHz – 2.2 MHz with RT pin
  • Greater than 85% efficiency at 1 mA
  • Miniature solution size and low component cost:
    • Integrated input bypass capacitors and bootstrap capacitor reducing EMI
    • 2.6-mm × 2.6-mm enhanced HotRod™ QFN package with wettable flanks
    • Internal control loop compensation

The LMQ664x0 is the industry smallest 36-V, 3-A (available in 2-A and 1-A variants) synchronous step-down DC/DC converter with an integrated bypass and bootstrap capacitor in an enhanced HotRod™ QFN package. This easy-to-use converter supports a wide input voltage range of 2.7 V to 36 V (after start-up or after operating) with transients up to 42 V.

The LMQ664x0 is specifically designed to meet low standby power requirements for always-on, industrial applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded typical current consumption of 1.5 µA at 13.5 V IN and high light load efficiency. A seamless transition between PWM and PFM modes along with very low MOSFET ON resistances makes sure there is exceptional efficiency across the entire load range. The control architecture (peak current mode) and feature set are optimized for an ultra-small solution size with minimal output capacitance. The device minimizes input filter size by using dual-random spread spectrum (DRSS), a low-EMI enhanced HotRod™ QFN package, and an optimized pin-out. The RT pin can be used to set the frequency to avoid noise sensitive frequency bands. There are NC pins between critical high voltage pins, reducing potential failures (optimal pin FMEA). The rich feature set of the LMQ664x0 is designed to simplify implementation for a wide range of industrial end equipment.

The LMQ664x0 is the industry smallest 36-V, 3-A (available in 2-A and 1-A variants) synchronous step-down DC/DC converter with an integrated bypass and bootstrap capacitor in an enhanced HotRod™ QFN package. This easy-to-use converter supports a wide input voltage range of 2.7 V to 36 V (after start-up or after operating) with transients up to 42 V.

The LMQ664x0 is specifically designed to meet low standby power requirements for always-on, industrial applications. Auto mode enables frequency foldback when operating at light loads, allowing an unloaded typical current consumption of 1.5 µA at 13.5 V IN and high light load efficiency. A seamless transition between PWM and PFM modes along with very low MOSFET ON resistances makes sure there is exceptional efficiency across the entire load range. The control architecture (peak current mode) and feature set are optimized for an ultra-small solution size with minimal output capacitance. The device minimizes input filter size by using dual-random spread spectrum (DRSS), a low-EMI enhanced HotRod™ QFN package, and an optimized pin-out. The RT pin can be used to set the frequency to avoid noise sensitive frequency bands. There are NC pins between critical high voltage pins, reducing potential failures (optimal pin FMEA). The rich feature set of the LMQ664x0 is designed to simplify implementation for a wide range of industrial end equipment.
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기술 자료

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1개 모두 보기
유형 직함 날짜
* Data sheet LMQ664x0, 36-V, 1-A, 2-A, and 3-A, Ultra-Small, Synchronous Step-Down Converter with Integrated VIN Bypass and CBOOT Capacitors datasheet (Rev. B) PDF | HTML 2023/05/08

설계 및 개발

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

평가 보드

LMQ66430-2EVM — 향상된 HotRod ™ QFN을 지원하는 36V 3A 동기 스텝다운 컨버터용 LMQ66430 평가 모듈

LMQ66430-2EVM 평가 모듈(EVM)은 설계자가 최대 36V의 입력 전압에서 최대 3A의 부하 전류까지 구동할 수 있는 동기 스텝다운 DC/DC 컨버터인 LMQ66430-Q1 디바이스의 작동 및 성능을 평가하도록 지원합니다. LMQ66430-Q1은 낮은 부하에서 초저 작동 정동작 전류를 갖고 있으며, 낮은 EMI 솔루션 크기를 제공하는 작은 2.6mm × 2.6mm 향상된 HotRod™ QFN 패키지로 제공됩니다.

사용 설명서: PDF | HTML
TI.com에서 구매 불가
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VQFN-FCRLF (RXB) 14 Ultra Librarian
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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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