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

LMR51403

활성

25µA 정동작 전류를 지원하는 4.5V~42V 0.3A 동기 벅 컨버터

지금 주문
데이터 시트

LMR51403

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 (Integrated Switch) Iout (max) (A) 0.3 Vin (min) (V) 4.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 1100 Features Enable, Forced PWM, Over Current Protection, Pre-Bias Start-Up, Synchronous Rectification Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 28 Iq (typ) (µA) 25
Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter (Integrated Switch) Iout (max) (A) 0.3 Vin (min) (V) 4.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 400 Switching frequency (max) (kHz) 1100 Features Enable, Forced PWM, Over Current Protection, Pre-Bias Start-Up, Synchronous Rectification Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 28 Iq (typ) (µA) 25
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • 4V to 42V input voltage range
    • Input transient protection up to 50V
    • 300mA continuous output current
    • 80ns minimum switching on time
    • Fixed 400kHz and 1.1MHz switching frequency
    • –40°C to 150°C junction temperature range
    • 96% maximum duty cycle
    • Monotonic start-up with prebiased output
    • Short-circuit protection with hiccup mode
    • Precision enable
    • ±1.5% tolerance voltage reference
  • Small design size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • SOT-23 package
  • Various options in pin-to-pin compatible package
    • PFM and forced PWM (FPWM) options
  • Pin-to-pin compatible with the LMR51610, LMR51406, LMR16006, LV2862, LMR50410, TPS560430, and LMR54410
  • Create a custom design using the LMR51403 with the WEBENCH ™ Power Designer
  • Functional Safety-Capable
  • Configured for rugged industrial applications
    • 4V to 42V input voltage range
    • Input transient protection up to 50V
    • 300mA continuous output current
    • 80ns minimum switching on time
    • Fixed 400kHz and 1.1MHz switching frequency
    • –40°C to 150°C junction temperature range
    • 96% maximum duty cycle
    • Monotonic start-up with prebiased output
    • Short-circuit protection with hiccup mode
    • Precision enable
    • ±1.5% tolerance voltage reference
  • Small design size and ease of use
    • Integrated synchronous rectification
    • Internal compensation for ease of use
    • SOT-23 package
  • Various options in pin-to-pin compatible package
    • PFM and forced PWM (FPWM) options
  • Pin-to-pin compatible with the LMR51610, LMR51406, LMR16006, LV2862, LMR50410, TPS560430, and LMR54410
  • Create a custom design using the LMR51403 with the WEBENCH ™ Power Designer

The LMR51403 is a wide-VIN, easy-to-use synchronous buck converter capable of driving up to 300mA load current. With a wide input range of 4V to 42V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR51403 operates at 400kHz and 1.1MHz switching frequency to support use of relatively small inductors for an optimized design size. The LMR51403 has a pulse frequency modulation (PFM version) to realize high efficiency at light load and forced pulse width modulation (FPWM version) to achieve constant frequency and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allow the device to be used with minimal external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation.

The LMR51403 is a wide-VIN, easy-to-use synchronous buck converter capable of driving up to 300mA load current. With a wide input range of 4V to 42V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source.

The LMR51403 operates at 400kHz and 1.1MHz switching frequency to support use of relatively small inductors for an optimized design size. The LMR51403 has a pulse frequency modulation (PFM version) to realize high efficiency at light load and forced pulse width modulation (FPWM version) to achieve constant frequency and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allow the device to be used with minimal external components.

The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation.
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기술 자료

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2개 모두 보기
유형 직함 날짜
* Data sheet LMR51403 4V to 42V, 300mA, Synchronous Buck Converter in a SOT-23 Package datasheet PDF | HTML 2024/11/19
Functional safety information LMR51403 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 2024/10/09

설계 및 개발

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

평가 보드

LMR51603EVM — LMR51603 평가 모듈

LMR51603EVM은 사용자가 LMR51603 컨버터의 작동과 기능을 쉽게 평가하고 테스트할 수 있도록 설계된 완전 조립되고 테스트된 회로입니다. 이 평가 모듈은 일반적인 12V 입력을 작동하며 300mA에서 5V 출력을 제공합니다. 통합된 낮은 RDS(ON) 전원 MOSFET은 공간이 제약된 전원 시스템을 위한 최소한의 외부 구성 요소 수로 높은 효율성을 가능하게 하며 사용 편의성을 제공합니다.
사용 설명서: PDF | HTML
TI.com에서 구매 불가
패키지 핀 CAD 기호, 풋프린트 및 3D 모델
SOT-23 (DBV) 6 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

TI 엔지니어의 기술 지원을 받을 수 있는 TI E2E™ 포럼

포럼 주제 모두 보기(영문)

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