홈 전원 관리 AC/DC 및 DC/DC 컨트롤러(외장 FET)
홈
전원 관리
AC/DC 및 DC/DC 컨트롤러(외장 FET)

LM25085

활성

4.5~42V 넓은 입력 전압 범위, COT(Constant-On-Time) 비동기형 PFET 벅 컨트롤러

지금 주문
데이터 시트

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
LM25148 활성 초저 IQ를 지원하는 42V 동기식 벅 DC/DC 컨트롤러 Improved EMI performance with QFN package and dual random spread spectrum.

LM25085

활성
데이터 시트 지금 주문

제품 상세 정보

Vin (min) (V) 4.5 Vin (max) (V) 42 Iout (max) (A) 10 Operating temperature range (°C) -40 to 125 Control mode Constant on-time (COT) Topology Buck Controller Rating Catalog Vout (min) (V) 1.25 Vout (max) (V) 42 Features Adjustable current limit, Enable, Frequency synchronization Iq (typ) (µA) 1250 Duty cycle (max) (%) 100 Number of phases 1
Vin (min) (V) 4.5 Vin (max) (V) 42 Iout (max) (A) 10 Operating temperature range (°C) -40 to 125 Control mode Constant on-time (COT) Topology Buck Controller Rating Catalog Vout (min) (V) 1.25 Vout (max) (V) 42 Features Adjustable current limit, Enable, Frequency synchronization Iq (typ) (µA) 1250 Duty cycle (max) (%) 100 Number of phases 1
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9 VSSOP (DGK) 8 14.7 mm² 3 x 4.9 WSON (NGQ) 8 9 mm² 3 x 3
  • LM25085-Q1 is an Automotive Grade product that is
    AEC-Q100 Grade 1 Qualified (–40°C to 125°C
    Operating Junction Temperature)
  • Wide 4.5V to 42V Input Voltage Range
  • Adjustable Current Limit Using RDS(ON) or a
    Current Sense Resistor
  • Programmable Switching Frequency to 1MHz
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Nearly Constant Operating Frequency with Line and
    Load Variations
  • Adjustable Output Voltage from 1.25V
  • Precision ±2% Feedback Reference
  • Capable of 100% Duty Cycle Operation
  • Internal Soft-Start Timer
  • Integrated High Voltage Bias Regulator
  • Thermal Shutdown
  • LM25085-Q1 is an Automotive Grade product that is
    AEC-Q100 Grade 1 Qualified (–40°C to 125°C
    Operating Junction Temperature)
  • Wide 4.5V to 42V Input Voltage Range
  • Adjustable Current Limit Using RDS(ON) or a
    Current Sense Resistor
  • Programmable Switching Frequency to 1MHz
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Nearly Constant Operating Frequency with Line and
    Load Variations
  • Adjustable Output Voltage from 1.25V
  • Precision ±2% Feedback Reference
  • Capable of 100% Duty Cycle Operation
  • Internal Soft-Start Timer
  • Integrated High Voltage Bias Regulator
  • Thermal Shutdown

The LM25085 is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, efficient buck regulator for a wide range of applications. This high voltage controller contains a PFET gate driver and a high voltage bias regulator which operates over a wide 4.5V to 42V input range. The constant on-time regulation principle requires no loop compensation, simplifies circuit implementation, and results in ultra-fast load transient response. The operating frequency remains nearly constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The PFET architecture allows 100% duty cycle operation for a low dropout voltage. Either the RDS(ON) of the PFET or an external sense resistor can be used to sense current for over-current detection.

The LM25085 is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, efficient buck regulator for a wide range of applications. This high voltage controller contains a PFET gate driver and a high voltage bias regulator which operates over a wide 4.5V to 42V input range. The constant on-time regulation principle requires no loop compensation, simplifies circuit implementation, and results in ultra-fast load transient response. The operating frequency remains nearly constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The PFET architecture allows 100% duty cycle operation for a low dropout voltage. Either the RDS(ON) of the PFET or an external sense resistor can be used to sense current for over-current detection.
filter 기타 AC/DC 및 DC/DC 컨트롤러(외장 FET) 찾기
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기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
6개 모두 보기
유형 직함 날짜
* Data sheet LM25085 / -Q1 42V Constant On-Time PFET Buck Switching Controller datasheet (Rev. J) PDF | HTML 2014/11/03
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
Application note Transient Response versus Ripple – An Analysis of Ripple Injection Techniques 2014/04/28
Application note Automated Frequency Response Analyzer 2013/10/09
EVM User's guide AN-1905 LM25085 Evaluation Board (Rev. B) 2013/04/26
Application note Constant Current Constant Voltage Buck Converter w/LM25085 (Rev. A) 2013/04/23

설계 및 개발

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

평가 보드

LM25085MYEVAL — LM25085 - 42V 넓은 Vin COT(Constant-On-Time) PFET 벅 스위칭 컨트롤러용 평가 보드

The LM25085 evaluation board provides the design engineer with a fully functional buck regulator, employing the LM25085 PFET switching controller which uses the constant on-time (COT) operating principle. The evaluation board provides a 5V output over an input range of 5.5V to 42V. The circuit (...)

사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

LM25085 PSpice Transient Model

SNVM302.ZIP (99 KB) - PSpice Model
다운로드
시뮬레이션 모델

LM25085 Unencrypted PSpice Transient Model

SNVMAF8.ZIP (3 KB) - PSpice Model
다운로드
계산 툴

LM25085-5085QUICK-CALC — LM(2)5085 빠른 시작 계산기

다운로드
패키지 핀 CAD 기호, 풋프린트 및 3D 모델
HVSSOP (DGN) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
WSON (NGQ) 8 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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