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

LM34919C-Q1

활성

오토모티브 4.5~50V 광범위 Vin 600mA 2.6MHz 초소형 COT(Constant On-Time) 비동기 벅 레귤레이터

지금 주문
데이터 시트

이 제품의 최신 버전이 있습니다

open-in-new 대안 비교
다른 핀 출력을 지원하지만 비교 대상 장치와 동일한 기능
TPS560430-Q1 활성 차량용 공인 SIMPLE SWITCHER® 4V~36V, 600mA 동기식 스텝다운 컨버터 PFM and PWM selectable options in an SOT-23 package.

LM34919C-Q1

활성
데이터 시트 지금 주문

제품 상세 정보

Rating Automotive Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.6 Vin (min) (V) 4.5 Vin (max) (V) 50 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 2600 Features Enable, Power good, Soft Start Adjustable Control mode Constant on-time (COT) Vout (min) (V) 2.5 Vout (max) (V) 45 Iq (typ) (µA) 2200 Duty cycle (max) (%) 99
Rating Automotive Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.6 Vin (min) (V) 4.5 Vin (max) (V) 50 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 2600 Features Enable, Power good, Soft Start Adjustable Control mode Constant on-time (COT) Vout (min) (V) 2.5 Vout (max) (V) 45 Iq (typ) (µA) 2200 Duty cycle (max) (%) 99
DSBGA (YZR) 12 3.9375 mm² 2.25 x 1.75 WSON (DNT) 12 16 mm² 4 x 4
  • AEC-Q100 qualified (Tj = –40°C to 125°C)
  • Maximum Switching Frequency: 2.6 MHz
  • Input Voltage Range: 4.5 V to 50 V
  • Integrated N-Channel buck switch
  • Integrated Start-Up Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Operating Frequency Remains Constant with
    Load Current and Input Voltage
  • Adjustable Output Voltage
  • Power Good Output
  • Enable Input
  • Valley Current Limit at 0.64 A Typical
  • Precision Internal Voltage Reference
  • Low IQ Shutdown (<10 µA)
  • Highly Efficient Operation
  • Thermal Shutdown
  • 12-Bump 2 mm × 2 mm DSBGA and 12-pin 4
    mm × 4 mm WSON Packages
  • AEC-Q100 qualified (Tj = –40°C to 125°C)
  • Maximum Switching Frequency: 2.6 MHz
  • Input Voltage Range: 4.5 V to 50 V
  • Integrated N-Channel buck switch
  • Integrated Start-Up Regulator
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Operating Frequency Remains Constant with
    Load Current and Input Voltage
  • Adjustable Output Voltage
  • Power Good Output
  • Enable Input
  • Valley Current Limit at 0.64 A Typical
  • Precision Internal Voltage Reference
  • Low IQ Shutdown (<10 µA)
  • Highly Efficient Operation
  • Thermal Shutdown
  • 12-Bump 2 mm × 2 mm DSBGA and 12-pin 4
    mm × 4 mm WSON Packages

The LM34919C Step Down Switching Regulator features all of the functions needed to implement a low-cost, efficient, buck bias regulator capable of supplying 0.6 A to the load. This buck regulator contains an N-Channel Buck Switch and is available in DSBGA and WSON packages. The constant on-time feedback regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The valley current limit results in a smooth transition from constant voltage to constant current mode when current limit is detected, reducing the frequency and output voltage, without the use of foldback. Additional features include: Power Good, enable, VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout, and maximum duty cycle limiter.

The LM34919C Step Down Switching Regulator features all of the functions needed to implement a low-cost, efficient, buck bias regulator capable of supplying 0.6 A to the load. This buck regulator contains an N-Channel Buck Switch and is available in DSBGA and WSON packages. The constant on-time feedback regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The valley current limit results in a smooth transition from constant voltage to constant current mode when current limit is detected, reducing the frequency and output voltage, without the use of foldback. Additional features include: Power Good, enable, VCC undervoltage lockout, thermal shutdown, gate drive undervoltage lockout, and maximum duty cycle limiter.
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기술 자료

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2개 모두 보기
유형 직함 날짜
* Data sheet LM34919C-Q1 Ultra Small 50V, 600mA Const On-Time Buck Switchg Reg datasheet (Rev. A) 2013/12/12
User guide LM34919C Evaluation Board User's Guide 2013/09/03

설계 및 개발

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

평가 보드

LM34919CQSDEVM — LM34919C-Q1 50V, 600mA 넓은 Vin COT(Constant-On-Time) 벅 스위칭 레귤레이터 평가 모듈

The LM34919CQSDEVM evaluation board provides the design engineer with a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 3.3V output over an input range of 4.5V to 50V. The circuit delivers load currents to 600 mA, with (...)

사용 설명서: PDF
TI.com에서 구매 불가
평가 보드

LM34919CQTLEVM — LM34919C-Q1 50V, 600mA 넓은 Vin COT(Constant-On-Time) 벅 스위칭 레귤레이터 평가 모듈

The LM34919CQTLEVM evaluation board provides the design engineer with a fully functional buck regulator, employing the constant on-time (COT) operating principle. This evaluation board provides a 3.3V output over an input range of 4.5V to 50V. The circuit delivers load currents to 600 mA, with (...)

사용 설명서: PDF
TI.com에서 구매 불가
시뮬레이션 모델

LM34919C-Q1 PSpice Transient Model (Rev. A)

SNVM638A.ZIP (63 KB) - PSpice Model
다운로드
시뮬레이션 모델

LM34919C-Q1 Unencrypted PSpice Transient Model (Rev. A)

SNVM979A.ZIP (3 KB) - PSpice Model
다운로드
레퍼런스 디자인

TIDA-00223 — 동축 클래스 D 증폭기를 통한 오토모티브 오디오 I2S 레퍼런스 디자인

This reference design is an I²S/TDM-based, low-cost, easy-to-use alternative to fiber optics/analog copper wire for connecting an automotive (sound) control panel to an output stage/power amplifier. Supporting I²S as well as TDM, it is capable of transmitting digital audio signal to 16 (...)
Design guide: PDF
회로도: PDF
레퍼런스 디자인

TIDA-00098 — Aptina™ 오토모티브 카메라 모듈 레퍼런스 디자인

The reference design is an automotive camera module solution with Aptina image sensor and processor, and TI FPD-Link III serializer. The module features the AR0132AT 1.2Mp image sensor, the AP0101AT image signal processor (ISP) from Aptina, and the LM34919C, TPS62231 buck regulator and (...)
Test report: PDF
회로도: PDF
패키지 핀 CAD 기호, 풋프린트 및 3D 모델
DSBGA (YZR) 12 Ultra Librarian
WSON (DNT) 12 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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