홈 전력 관리 AC/DC 및 DC/DC 컨버터(통합 FET)
홈
전력 관리
AC/DC 및 DC/DC 컨버터(통합 FET)
신규

LMR71915

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120V, 1.5A COT(Constant-On-Time) 벅 컨버터

지금 주문
데이터 시트

LMR71915

미리 보기
데이터 시트 지금 주문

제품 상세 정보

Rating Catalog Topology Buck Switch current limit (typ) (A) 0.5 Iout (max) (A) 0.5 Vin (max) (V) 120 Vin (min) (V) 6 Vout (max) (V) 90 Vout (min) (V) 1.2 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Synchronous Rectification Control mode Constant on-time (COT) Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 1000 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 5 Duty cycle (max) (%) 99 Type Converter
Rating Catalog Topology Buck Switch current limit (typ) (A) 0.5 Iout (max) (A) 0.5 Vin (max) (V) 120 Vin (min) (V) 6 Vout (max) (V) 90 Vout (min) (V) 1.2 Features Enable, Light Load Efficiency, Over Current Protection, Power good, Soft Start Fixed, Synchronous Rectification Control mode Constant on-time (COT) Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 1000 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 150 Iq (typ) (µA) 5 Duty cycle (max) (%) 99 Type Converter
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • Designed for reliability in rugged applications
    • Wide input voltage range of 6V to 115V
    • Junction temperature range: –40°C to +150°C
    • Fixed 3ms internal soft-start timer
    • Peak and valley current-limit protection
    • Input UVLO and thermal shutdown protection
  • Designed for scalable industrial power supplies and battery packs
    • Low minimum on time of 30ns and minimum off time of 50ns
    • Adjustable switching frequency up to 1MHz
    • Diode emulation for high light-load efficiency
    • Auto mode with low quiescent current (5µA typical)
    • FPWM for Fly-Buck converter capability
    • 1µA shutdown quiescent current
    • Pin-to-pin compatible with LM5169, LM5168, LM5164, LM5163, and LM5013
    • Similar pinout and functionality to LM5017 and LM34927
  • Integration reduces design size and cost
    • COT mode control architecture
    • Integrated 0.7Ω NFET buck switch
    • Integrated 0.35Ω NFET synchronous rectifier
    • 1V internal voltage reference
    • No loop compensation components
    • Internal VCC bias regulator and boot diode
    • Open-drain power-good indicator
    • SOIC PowerPAD™-8 integrated circuit package
  • Designed for reliability in rugged applications
    • Wide input voltage range of 6V to 115V
    • Junction temperature range: –40°C to +150°C
    • Fixed 3ms internal soft-start timer
    • Peak and valley current-limit protection
    • Input UVLO and thermal shutdown protection
  • Designed for scalable industrial power supplies and battery packs
    • Low minimum on time of 30ns and minimum off time of 50ns
    • Adjustable switching frequency up to 1MHz
    • Diode emulation for high light-load efficiency
    • Auto mode with low quiescent current (5µA typical)
    • FPWM for Fly-Buck converter capability
    • 1µA shutdown quiescent current
    • Pin-to-pin compatible with LM5169, LM5168, LM5164, LM5163, and LM5013
    • Similar pinout and functionality to LM5017 and LM34927
  • Integration reduces design size and cost
    • COT mode control architecture
    • Integrated 0.7Ω NFET buck switch
    • Integrated 0.35Ω NFET synchronous rectifier
    • 1V internal voltage reference
    • No loop compensation components
    • Internal VCC bias regulator and boot diode
    • Open-drain power-good indicator
    • SOIC PowerPAD™-8 integrated circuit package

The LMR71915 and LMR71907 synchronous buck converters are designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on time of 30ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48V nominal input to low-voltage rails for reduced system complexity and design cost. The LMR719xx operates during input voltage dips as low as 6V, at nearly 100% duty cycle if needed, making the device an excellent choice for wide input supply range industrial and high cell count battery pack applications.

With integrated high-side and low-side power MOSFETs, the LMR71915 delivers up to 1.5A of output current and the LMR71907 delivers up to 0.75A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. The LMR719xx is available in FPWM or auto mode versions. FPWM mode provides forced CCM operation across the entire load range supporting isolated Fly-Buck converter applications. Auto mode enables ultra-low IQ and diode emulation mode operation for high light-load efficiency.

The LMR71915 and LMR71907 synchronous buck converters are designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on time of 30ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48V nominal input to low-voltage rails for reduced system complexity and design cost. The LMR719xx operates during input voltage dips as low as 6V, at nearly 100% duty cycle if needed, making the device an excellent choice for wide input supply range industrial and high cell count battery pack applications.

With integrated high-side and low-side power MOSFETs, the LMR71915 delivers up to 1.5A of output current and the LMR71907 delivers up to 0.75A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. The LMR719xx is available in FPWM or auto mode versions. FPWM mode provides forced CCM operation across the entire load range supporting isolated Fly-Buck converter applications. Auto mode enables ultra-low IQ and diode emulation mode operation for high light-load efficiency.
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기술 자료

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2개 모두 보기
유형 직함 날짜
* Data sheet LMR719xx 1.5A, 0.75A, 115V, Step-Down Converter With Fly-Buck Converter Capability datasheet PDF | HTML 2025/07/16
Certificate LMR71915EVM-FLBK EU Declaration of Conformity (DoC) 2025/06/23

설계 및 개발

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

평가 보드

LMR71915EVM-FLBK — LMR71915EVM-FLBK Fly-Buck™ 컨버터 평가 모듈

LMR71915EVM-FLBK는 LMR71915FDDAR을 사용하여 500kHz 스위칭 주파수로 변압기의 1차측에 625mA 부하를 공급할 수 있는 조정 12V 출력을 생성하는 Fly-Buck™ 컨버터입니다. 변압기의 2차측에서 최대 625mA를 제공하는 12V의 반사 출력을 사용할 수 있습니다. LMR71915FDDAR은 넓은 입력 전압 범위, 통합 전력 MOSFET, 과전류 보호 및 정밀 활성화를 지원하는 동기 벅 컨버터입니다. 이 장치는 접합부 온도 범위 –40°C~+150°C에서 작동하도록 설계되었습니다.

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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

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